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SERVICE MANUALSec. 1: Main SectionI SpecificationsI Preparation for ServicingI Adjustment ProceduresI Schematic DiagramsI CBAsI Exploded viewsI Parts List
Sec. 2: Deck Mechanism SectionI Standard MaintenanceI Alignment for MechanismI Disassembly/Assembly of MechanismI Alignment Procedures of MechanismI Deck Exploded ViewsI Deck Parts List
14" COLOR TV/VCR COMBINATION
T6605VF
21" COLOR TV/VCR COMBINATION
T6705VF
PAL
MAIN SECTION
14"/21" COLOR TV/VCR COMBINATION
T6605VF/T6705VF
TABLE OF CONTENTSSpecifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-1Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2-1Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1Preparation for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4-1Cabinet Disassembly Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5-1Electrical Adjustment Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6-1 Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-1Mechanical Trouble Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-7Schematic Diagrams / CBAs and Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8-1Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9-1Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10-1System Control Timing Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-1IC Pin Function Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-1Lead Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13-1Cabinet Exploded Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14-1Packing Exploded Views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14-5Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15-1Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16-1
Sec. 1: Main SectionI SpecificationsI Preparation for ServicingI Adjustment ProceduresI Schematic DiagramsI CBAsI Exploded ViewsI Parts List
1-1-1 T6605SP
SPECIFICATIONS*Mode---------SP mode unless otherwise specified*Test input terminal -------------Video input (1Vp-p) Audio input (-10dB) -----------------------Ant. input (80dBV) Video: 87.5% mod.(BG/DK), 80.0% mod.(I) Audio: 30kHz div (1kHz Sin)
[ T6605VF ]
[ T6705VF ]
[ T6605VF ]
[ T6705VF ]
Description Condition Unit Nominal Limit
1. Over Scan % 90 85/95
2. Linearity Horizontal % 15
Vertical % 10
3. High Voltage kV 22
Description Condition Unit Nominal Limit
1. Over Scan % 90 85/95
2. Linearity Horizontal % 15
Vertical % 10
3. High Voltage kV 25
Description Condition Unit Nominal Limit
1. Misconvergence Center m/m 0.6
Corner m/m 2.0
Side m/m 1.5
2. Contrast Control Range dB 6
3. Brightness APL 100% ft-L 55 40
4. Color Temperature K 8500
Description Condition Unit Nominal Limit
1. Misconvergence Center m/m 0.6
Corner m/m 2.5
Side m/m 1.8
2. Contrast Control Range dB 6
3. Brightness APL 100% ft-L 35 24
4. Color Temperature K 8500
1-1-2 T6605SP
All items are measured across 8 resistor at speaker output terminal.
Note: Nominal specifications represent the design specifications. All units should be able to approximate these.Some will exceed and some may drop slightly below these specifications. Limit specifications represent the abso-lute worst condition that still might be considered acceptable. In no case should a unit fail to meet limit specifica-tions.
Description Condition Unit Nominal Limit
1. Horizontal Resolution (R/P) Line 230 2002. Jitter (Low) (R/P) S 0.05 0.23. S/N Chroma AM(SP) (R/P) dB 38 33 PM(SP) (R/P) dB 36 334. Wow & Flutter (RMS) (R/P) % 0.25 0.5
Description Condition Unit Nominal Limit
1. Video S/N dB 45 40
2. Audio S/N (W/LPF) dB 43 40
Description Condition Unit Nominal Limit
1. Audio Output Power (Max.) (R/P) W 1.0 0.82. Audio S/N (W/LPF) (R/P) dB 40 363. Audio Distortion (W/LPF) (R/P) % 3.0 5.04. Audio Freq. Response (-20dB Ref. 1kHz)
200Hz (R/P)6kHz (R/P)
dBdB
5.0/-105.0/-10
TV Norm Tuner Sensivity Receptive TV Channels
PAL-B/G NOM: VHF 46dBV / UHF 47dBVMAX: VHF 53dBV / UHF 56dBVE2 - E12, IA - IH, E21 - E69, S01 - S03, Z+1, Z+2, S1 - S41, gap2
1-2-1 T6600SFTY
IMPORTANT SAFETY PRECAUTIONSPrior to shipment from the factory, our products are strictly inspected for recognized product safety and electricalcodes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equallyimportant to implement the following precautions when a set is being serviced.
Safety Precautions for TV Circuit 1. Before returning an instrument to the custom-
er, always make a safety check of the entire instru-ment, including, but not limited to, the followingitems:
a. Be sure that no built-in protective devices are de-fective and have been defeated during servicing.(1) Protective shields are provided on this chassisto protect both the technician and the customer.Correctly replace all missing protective shields, in-cluding any removed for servicing convenience.(2) When reinstalling the chassis and/or other as-sembly in the cabinet, be sure to put back in placeall protective devices, including but not limited to,nonmetallic control knobs, insulating fishpapers,adjustment and compartment covers/shields, andisolation resistor/capacitor networks. Do not oper-ate this instrument or permit it to be operatedwithout all protective devices correctly in-stalled and functioning. Servicers who defeatsafety features or fail to perform safety checksmay be liable for any resulting damage.
b. Be sure that there are no cabinet openings throughwhich an adult or child might be able to insert theirfingers and contact a hazardous voltage. Suchopenings include, but are not limited to, (1) spac-ing between the picture tube and the cabinetmask, (2) excessively wide cabinet ventilationslots, and (3) an improperly fitted and/or incorrectlysecured cabinet back cover.
c. Antenna Cold Check - With the instrument ACplug removed from any AC source, connect anelectrical jumper across the two AC plug prongs.Place the instrument AC switch in the on position.Connect one lead of an ohmmeter to the AC plugprongs tied together and touch the other ohmme-ter lead in turn to each tuner antenna input ex-posed terminal screw and, if applicable, to thecoaxial connector. If the measured resistance isless than 1.0 megohm or greater than 5.2 mego-hm, an abnormality exists that must be correctedbefore the instrument is returned to the customer.Repeat this test with the instrument AC switch inthe off position.
d. Leakage Current Hot Check - With the instru-ment completely reassembled, plug the AC linecord directly into a 120V AC outlet. (Do not use anisolation transformer during this test.) Use a leak-
age current tester or a metering system that com-plies with American National Standards Institute(ANSI) C101.1 Leakage Current for Appliancesand Underwriters Laboratories (UL) 1410, (50.7).With the instrument AC switch first in the on posi-tion and then in the off position, measure from aknown earth ground (metal water pipe, conduit,etc.) to all exposed metal parts of the instrument(antennas, handle brackets, metal cabinet, screwheads, metallic overlays, control shafts, etc.), es-pecially any exposed metal parts that offer an elec-trical return path to the chassis. Any currentmeasured must not exceed 0.5 milli-ampere. Re-verse the instrument power cord plug in the outletand repeat the test.
ANY MEASUREMENTS NOT WITHIN THE LIMITSSPECIFIED HEREIN INDICATE A POTENTIALSHOCK HAZARD THAT MUST BE ELIMINATEDBEFORE RETURNING THE INSTRUMENT TOTHE CUSTOMER OR BEFORE CONNECTINGTHE ANTENNA OR ACCESSORIES.
e. X-Radiation and High Voltage Limits - Becausethe picture tube is the primary potential source ofX-radiation in solid-state TV receivers, it is special-ly constructed to prohibit X-radiation emissions.For continued X-radiation protection, the replace-ment picture tube must be the same type as theoriginal. Also, because the picture tube shieldsand mounting hardware perform an X-radiationprotection function, they must be correctly in place.High voltage must be measured each time servic-
DEVICELEAKAGECURRENT
TESTER
ALSO TEST WITHPLUG REVERSEDUSING ACADAPTER PLUGAS REQUIRED
TEST ALL EXPOSEDMETAL SURFACES
READING SHOULDNOT BE ABOVE 0.5 mA
EARTHGROUND
BEINGTESTED
1-2-2 T6600SFTY
ing is performed that involves B+, horizontal de-flection or high voltage. Correct operation of theX-radiation protection circuits also must be recon-firmed each time they are serviced. (X-radiationprotection circuits also may be called "horizontaldisable" or "hold down.") Read and apply the highvoltage limits and, if the chassis is so equipped,the X-radiation protection circuit specifications giv-en on instrument labels and in the Product Safety& X-Radiation Warning note on the service datachassis schematic. High voltage is maintainedwithin specified limits by close tolerance safety-re-lated components/adjustments in the high-voltagecircuit. If high voltage exceeds specified limits,check each component specified on the chassisschematic and take corrective action.
2. Read and comply with all caution and safety-relat-ed notes on or inside the receiver cabinet, on thereceiver chassis, or on the picture tube.
3. Design Alteration Warning - Do not alter or addto the mechanical or electrical design of this TV re-ceiver. Design alterations and additions, including,but not limited to circuit modifications and the ad-dition of items such as auxiliary audio and/or videooutput connections, might alter the safety charac-teristics of this receiver and create a hazard to theuser. Any design alterations or additions will voidthe manufacturer's warranty and may make you,the servicer, responsible for personal injury orproperty damage resulting therefrom.
4. Picture Tube Implosion Protection Warning -The picture tube in this receiver employs integralimplosion protection. For continued implosion pro-tection, replace the picture tube only with one ofthe same type number. Do not remove, install, orotherwise handle the picture tube in any mannerwithout first putting on shatterproof gogglesequipped with side shields. People not soequipped must be kept safely away while picturetubes are handled. Keep the picture tube awayfrom your body. Do not handle the picture tube byits neck. Some "in-line" picture tubes are equippedwith a permanently attached deflection yoke; be-cause of potential hazard, do not try to removesuch "permanently attached" yokes from the pic-ture tube.
5. Hot Chassis Warning - a. Some TV receiver chassis are electrically connect-
ed directly to one conductor of the AC power cordand maybe safety-serviced without an isolationtransformer only if the AC power plug is insertedso that the chassis is connected to the ground sideof the AC power source. To confirm that the ACpower plug is inserted correctly, with an AC volt-meter, measure between the chassis and a known
earth ground. If a voltage reading in excess of 1.0Vis obtained, remove and reinsert the AC powerplug in the opposite polarity and again measurethe voltage potential between the chassis and aknown earth ground.
b. Some TV receiver chassis normally have 85VAC(RMS) between chassis and earth ground re-gardless of the AC plug polarity. This chassis canbe safety-serviced only with an isolation transform-er inserted in the power line between the receiverand the AC power source, for both personnel andtest equipment protection.
c. Some TV receiver chassis have a secondaryground system in addition to the main chassisground. This secondary ground system is not iso-lated from the AC power line. The two ground sys-tems are electrically separated by insulationmaterial that must not be defeated or altered.
6. Observe original lead dress. Take extra care to as-sure correct lead dress in the following areas: a.near sharp edges, b. near thermally hot parts-besure that leads and components do not touch ther-mally hot parts, c. the AC supply, d. high voltage,and e. antenna wiring. Always inspect in all areasfor pinched, out of place, or frayed wiring. CheckAC power cord for damage.
7. Components, parts, and/or wiring that appear tohave overheated or are otherwise damagedshould be replaced with components, parts, or wir-ing that meet original specifications. Additionally,determine the cause of overheating and/or dam-age and, if necessary, take corrective action to re-move any potential safety hazard.
8. Product Safety Notice - Some electrical and me-chanical parts have special safety-related charac-teristics which are often not evident from visualinspection, nor can the protection they give neces-sarily be obtained by replacing them with compo-nents rated for higher voltage, wattage, etc.. Partsthat have special safety characteristics are identi-fied by a ( ! ) on schematics and in parts lists. Useof a substitute replacement that does not have thesame safety characteristics as the recommendedreplacement part might create shock, fire, and/orother hazards. The Product's Safety is under re-view continuously and new instructions are issuedwhenever appropriate. Prior to shipment from thefactory, our products are strictly inspected to con-firm with the recognized product safety and electri-cal codes of the countries in which they are to besold. However, in order to maintain such compli-ance, it is equally important to implement the fol-lowing precautions when a set is being serviced.
1-2-3 T6600SFTY
Precautions during Servicing A. Parts identified by the ( ! ) symbol are critical for
safety.Replace only with part number specified.
B. In addition to safety, other parts and assembliesare specified for conformance with regulations ap-plying to spurious radiation. These must also be re-placed only with specified replacements.Examples: RF converters, RF cables, noise block-ing capacitors, and noise blocking filters, etc.
C. Use specified internal wiring. Note especially: 1) Wires covered with PVC tubing 2) Double insulated wires 3) High voltage leads D. Use specified insulating materials for hazardous
live parts. Note especially: 1) Insulation Tape 2) PVC tubing 3) Spacers 4) Insulators for transistors. E. When replacing AC primary side components
(transformers, power cord, etc.), wrap ends ofwires securely about the terminals before solder-ing.
F. Observe that the wires do not contact heat produc-ing parts (heatsinks, oxide metal film resistors, fus-ible resistors, etc.)
G. Check that replaced wires do not contact sharpedged or pointed parts.
H. When a power cord has been replaced, check that5~6 kg of force in any direction will not loosen it.
I. Also check areas surrounding repaired locations. J. Use care that foreign objects (screws, solder drop-
lets, etc.) do not remain inside the set. K. Crimp type wire connector
When replacing the power transformer in setswhere the connections between the power cordand power transformer primary lead wires are per-formed using crimp type connectors, in order toprevent shock hazards, perform carefully and pre-cisely the following steps.Replacement procedure
1) Remove the old connector by cutting the wires at apoint close to the connector. Important: Do not re-use a connector (discard it).
2) Strip about 15 mm of the insulation from the endsof the wires. If the wires are stranded, twist thestrands to avoid frayed conductors.
3) Align the lengths of the wires to be connected. In-sert the wires fully into the connector.
4) Use the crimping tool to crimp the metal sleeve atthe center position. Be sure to crimp fully to thecomplete closure of the tool.
L. When connecting or disconnecting the VCR con-nectors, first, disconnect the AC plug from AC sup-ply socket.
1-2-4 T6600SFTY
Safety Check after ServicingExamine the area surrounding the repaired location fordamage or deterioration. Observe that screws, partsand wires have been returned to original positions.Afterwards, perform the following tests and confirm thespecified values in order to verify compliance withsafety standards.
1. Clearance DistanceWhen replacing primary circuit components, confirmspecified clearance distance (d) and (d') between sol-dered terminals, and between terminals and surround-ing metallic parts. (See Fig. 1)
Table 1 : Ratings for selected area
Note: This table is unofficial and for reference only.Be sure to confirm the precise values.
2. Leakage Current TestConfirm the specified (or lower) leakage current be-tween B (earth ground, power cord plug prongs) andexternally exposed accessible parts (RF terminals, an-tenna terminals, video and audio input and output ter-minals, microphone jacks, earphone jacks, etc.).Measuring Method : (Power ON)Insert load Z between B (earth ground, power cordplug prongs) and exposed accessible parts. Use anAC voltmeter to measure across both terminals of loadZ. See Fig. 2 and following table.
Table 2: Leakage current ratings for selected areas
Note: This table is unofficial and for reference only. Be sure to confirm the precise values.
AC Line Voltage Clearance Distance (d), (d)
220 to 240 V 3mm(d) 6 mm(d)
Chassis or Secondary Conductor
dd
Primary Circuit Terminals
Fig. 1
Fig. 2
AC Voltmeter(High Impedance)
Exposed Accessible Part
B One side of Power Cord Plug Prongs
Z
AC Line Voltage Load Z Leakage Current (i) One side of power cord plug prongs (B) to:
220 to 240 V
2k RES. Connected in
paralleli0.7mA AC Peak
i2mA DCRF or
Antenna terminals
50k RES. Connected in
paralleli0.7mA AC Peak
i2mA DC A/V Input, Output
1-3-1 T6600STA
STANDARD NOTES FOR SERVICINGCircuit Board Indications1. The output pin of the 3 pin Regulator ICs is indi-
cated as shown:
2. For other ICs, pin 1 and every 5th pin is indicatedas shown:
3. The 1st pin of every pin connector are indicated asshown:
Instructions for Connectors1. When you connect or disconnect FFC cable (con-
nector), be sure to disconnect the AC cord.2. FFC cable (connector) should be inserted parallel
into the connector, not at an angle.
[ CBA= Circuit Board Assembly ]
How to Read the Values of the Rect-angular Type Chip ComponentsExample:(a) Resistor
(b) Capacitor
Caution:Once chip parts (Resistors, Capacitors, Transistors,etc.) are removed, they must not be reused. Alwaysuse a new part.
Pb (Lead) Free SolderPb free mark will be found on PCBs used Pb freesolder. (Refer to figure.) For PCBs with Pb freemark, be sure to use Pb free solder. For PCBswithout Pb free mark, use standard solder.
Replacement Procedures for Leadless (Chip) ComponentsThe Following Procedures are Recom-mended for the Replacement of the Lead-less Components Used in this Unit.1. Preparation for replacement1.1. Pb free soldera. Soldering Iron
Use a soldering iron for Pb free solder.b. Solder
Be sure to use Pb free solder.c. Soldering time
Do not apply heat for more than 4 seconds.d. Preheating
Leadless capacitor must be preheated beforeinstallation. (130C~150C, for about two minutes.)
Top View
Out In
Bottom ViewInput
5
10
Pin 1
Pin 1
FFC Cable
Connector
CBA
* Be careful to avoid a short circuit.
(Top View)
473= 473 = 47 [k]
(Top View)= Not Shown
Pb free mark
1-3-2 T6600STA
1.2. Standard soldere. Soldering Iron
Use a pencil-type soldering iron (less than 30watts).
f. SolderEutectic solder (Tin 63%, Lead 37%) is recom-mended.
g. Soldering timeDo not apply heat for more than 4 seconds.
h. PreheatingLeadless capacitor must be preheated beforeinstallation. (130C~150C, for about two minutes.)
Notes:a. Leadless components must not be reused after
removal.b. Excessive mechanical stress and rubbing for the
component electrode must be avoided.2. Removing the leadless componentGrasp the leadless component body with tweezersand alternately apply heat to both electrodes. Whenthe solder on both electrodes has melted, removeleadless component with a twisting motion.Notes:a. Do not attempt to lift the component off the board
until the component is completely disconnectedfrom the board by the twisting action.
b. Take care not to break the copper foil on the printedboard
3. Installing the leadless componenta. Presolder the contact points of the circuit board.b. Press the part downward with tweezers and solder
both electrodes as shown below.
Note:Do not glue the replacement leadless component tothe circuit board.
How to Remove / Install Flat Pack ICCaution:1. The Flat Pack-IC shape may differ by models. Use
an appropriate hot-air flat pack-IC desoldering ma-chine, whose shape matches that of the Flat Pack-IC.
2. Do not apply the hot air to the chip parts around theFlat Pack-IC for over 6 seconds as damage mayoccur to the chip parts. Put Masking Tape aroundthe Flat Pack-IC to protect other parts from dam-age. (Fig. S-1-2)
3. The Flat Pack-IC on the CBA is affixed with glue, sobe careful not to break or damage the foil of eachpin or solder lands under the IC when removing it.
1. RemovalWith Hot - Air Flat Pack - IC Desoldering Machine:a. Prepare the Hot - Air Flat Pack - IC Desoldering
Machine, then apply hot air to Flat Pack - IC (about5~6 seconds). (Fig. S-1-1)
b. Remove the Flat Pack- IC with tweezers whileapplying the hot air.
With Soldering Iron:a. Using desoldering braid, remove the solder from all
pins of the Flat Pack - IC. When you use solder fluxwhich is applied to all pins of the Flat Pack - IC, youcan remove it easily. (Fig. S-1-3)
b. Lift each lead of the Flat Pack - IC upward one byone, using a sharp pin or wire to which solder willnot adhere (iron wire). When heating the pins, usea fine tip soldering iron or a hot air DesolderingMachine. (Fig. S-1-4)
With Iron Wire:a. Using desoldering braid, remove the solder from all
pins of the Flat Pack - IC. When you use solder fluxwhich is applied to all pins of the Flat Pack - IC, youcan remove it easily. (Fig. S-1-3)
Chip
Tweezers
Soldering Iron
Soldering IronTweezers
Solder
Soldering Iron
Presolder
1-3-3 T6600STA
b. Affix the wire to a workbench or solid mountingpoint, as shown in Fig. S-1-5.
c. Pull up on the wire as the solder melts so as to liftthe IC leads from the CBA contact pads, whileheating the pins using a fine tip soldering iron orhot air blower.
Note:When using a soldering iron, care must be takento ensure that the Flat Pack - IC is not being heldby glue, or when it is removed from the CBA, itmay be damaged if force is used.
2. Installationa. Using desoldering braid, remove the solder from
the foil of each pin of the Flat Pack - IC on the CBA,so you can install a replacement Flat Pack - ICmore easily.
b. The "I" mark on the Flat Pack - IC indicates pin 1(See Fig. S-1-6). Make sure this mark matches the1 on the CBA when positioning for installation.Then pre - solder the four corners of the Flat Pack-IC (See Fig. S-1-7).
c. Solder all pins of the Flat Pack - IC. Make sure thatnone of the pins have solder bridges.
Fig. S-1-1
Fig. S-1-2
Hot-airFlat Pack-ICDesolderingMachineCBA
Flat Pack-IC
Tweezers
Masking Tape
Fig. S-1-3
Flat Pack-IC Desoldering Braid
Soldering Iron
Fig. S-1-4
Fine TipSoldering Iron
SharpPin
Fig. S-1-5
To Solid Mounting Point
Soldering Iron
Iron Wire
or
Hot Air Blower
Fig. S-1-6
Example :
Pin 1 of the Flat Pack-ICis indicated by a " " mark.
1-3-4 T6600STA
Instructions for Handling SemiconductorsElectrostatic breakdown of the semiconductors mayoccur due to a potential difference caused by electro-static charge during unpacking or repair work.
Ground for Human BodyBe sure to wear a grounding band (1M) that is prop-erly grounded to remove any static electricity that maybe charged on the body.
Ground for Work BenchBe sure to place a conductive sheet or copper platewith proper grounding (1M) on the work bench orother surface, where the semiconductors are to beplaced. Because the static electricity charge on theclothing will not escape through the body groundingband, be careful to avoid contacting semiconductors toclothing.
Fig. S-1-7
Presolder
CBA
Flat Pack-IC
CBA
Grounding Band
Conductive Sheet orCopper Plate
1M
1M
CBA
1-4-1 T6600PFS
PREPARATION FOR SERVICINGHow to Enter the Service ModeCaution: 11. Optical sensors system are used for Tape Start and
End Sensor on this equipment. Read this pagecarefully and prepare as described on this pagebefore starting to service; otherwise, the unit mayoperate unexpectedly.
Preparing: 11. Cover Q202 (START SENSOR) and Q201 (END
SENSOR) with Insulation Tape or enter the servicemode to activate Sensor Inhibition automatically.
Note: Avoid playing, rewinding or fast forwarding thetape to its beginning or end, because both Tape EndSensors are not active. How to Enter the Service Mode1. Turn the power on. (Use main power on the TV
unit.)2. Press [STANDBY/ON], [2], [7], [1], and [MUTE] but-
tons on the remote control unit in that order within 5seconds. When entering the service mode, 4 willdisplay at corners of the screen.
3. During the service mode, electrical adjustmentmode can be selected by remote control key. Details are as follows.
Caution: 21. The deck mechanism assembly is mounted on the
Main CBA directly, and SW211 (REC-SAFETYSW) is mounted on the Main CBA. When deckmechanism assembly is removed from the MainCBA due to servicing, this switch can not be oper-ated automatically.
Preparing: 21. To eject the tape, press the STOP/EJECT button
on the unit (or Remote Control).2. When you want to record during the Service mode,
press the Rec button while depressing SW211(REC-SAFETY SW) on the Main CBA.
Key Adjustment Mode
MENU
Picture adjustment mode: Press the MENU button to change from BRT (Bright), *CNT (Contrast), *COL (Color), *TNT(Tint) and SHP(SHARP). Press PROG+/PROG- key to adjust Initial Value. *Marked items are not necessary to adjust normally.
VOL-
SECAM Black Level adjustment mode: See adjustment instructions page 1-6-3.Cut-Off adjustment mode: See adjust-ment instructions page 1-6-4.White Balance adjustment mode: See adjustment instructions page 1-6-5.
0 C-Trap adjustment mode: See adjust-ment instructions page 1-6-3.
1 No need to use.
2 H adjustment mode: See adjustment instructions page 1-6-2.
3Head switching point adjustment mode (Auto adjustment): See adjustment instructions page 1-6-7.
4Auto record mode: Perform recording (15 Sec.)-->Stop-->Rewind (Zero return) automatically.
5Head switching point adjustment mode (Manual adjustment): See adjustment instructions page 1-6-7.
6 No need to use.7 No need to use.
8 H. Shift adjustment mode: See adjust-ment instructions page 1-6-4.
9 V.size/V. shift adjustment: See adjust-ment instructions page 1-6-4.
Key Adjustment Mode
(START SENSOR)(END SENSOR)
(REC-SAFETY SW) MAIN CBA
Q201
SW211
Q202
1-5-1 T6605DC
CABINET DISASSEMBLY INSTRUCTIONS[ T6605VF ]1. Disassembly FlowchartThis flowchart indicates the disassembly steps for thecabinet parts, and the CBA in order to gain access toitem(s) to be serviced. When reassembling, follow thesteps in reverse order. Bend, route and dress thecables as they were.Caution !!When removing the CRT, be sure to discharge theAnode Lead of the CRT with the CRT Ground Wirebefore removing the Anode Cap.
2. Disassembly Method
(1): Order of steps in Procedure. When reassembling,follow the steps in reverse order.These numbersare also used as the identification (location) No. ofparts in Figures.
(2): Parts to be removed or installed.(3): Fig. No. showing Procedure of Part Location.(4): Identification of part to be removed, unhooked,
unlocked, released, unplugged, unclamped, ordesoldered.S=Screw, P=Spring, L=Locking Tab, CN=Connec-tor, *=Unhook, Unlock, Release, Unplug, or Desol-der2(S-2) = two Screw (S-2)
(5): Refer to the following "Reference Notes in theTable."
Reference Notes in the Table1. Removal of the Rear Cabinet.
Remove four screws (S-1) and two screws (S-2).Disconnect connector CN151 and remove the RearCabinet.
Caution !!Discharge the Anode Lead of the CRT with the CRTGround Wire before removing the Anode Cap.2. Removal of the Power Unit and Tray Chassis Unit.
Discharge the Anode Lead of the CRT with theCRT Ground before removing the Anode Cap.Disconnect the following: Anode Cap, CN501,CN551, CN601, CRT CBA, and Power Button.Then pull the Power Unit and Tray Chassis Unit outbackward.
3. Removal of the Power Unit. Disconnect connectors CN502, CN552, andCN602. Then slide the Power Unit out.
4. Removal of the H.V./Power Supply CBA. Remove six screws (S-3) and pull up the H.V./Power Supply CBA.
5. Removal of the Top Cover.Remove five screws (S-4) and CL604, and removethe Top Cover.
ID/LOC.No.
PART
REMOVAL
Fig. No.
REMOVE/*UNHOOK/UNLOCK/RELEASE/UNPLUG/DESOLDER
Note
[1] Rear Cabinet 1,2,54(S-1), 2(S-2), *CN151 1
[2]Power Unit and Tray Chassis Unit
3,4,5
Anode Cap, *CN501, *CN551, *CN601, CRT CBA, Power Knob
2
[3] Power Unit 3,5 *CN502, *CN552, *CN602 3
[4]Tray Chassis Unit
3 ---------- -
[5]H.V./Power Supply CBA
3 6(S-3) 4
[6] Top Cover 3 5(S-4), CL604 5[7] Bottom Plate 3 (S-5) 6
[1] Rear Cabinet
[2] Power Unit and Tray Chassis Unit
[3] Power Unit[5] H.V./PowerSupply CBA
[4] Tray Chassis Unit
[6] Top Cover
[7] Bottom Plate
[8] Deck Unit
[9] Main CBA
[10] CRT
[8] Deck Unit 3, 57(S-6), (S-7), (S-8), Desolder *(CN201, CL401, CL402, CL403)
7
[9] Main CBA 3 4(S-9) 8[10] CRT 4 4(S-10) 9(1)
(2)
(3)
(4)
(5)
ID/LOC.No.
PART
REMOVAL
Fig. No.
REMOVE/*UNHOOK/UNLOCK/RELEASE/UNPLUG/DESOLDER
Note
1-5-2 T6605DC
6. Removal of the Bottom Plate.Remove a screw (S-5). Then slide the Bottom Plateout front.
7. Removal of the Deck Unit.Remove seven screws (S-6), screw (S-7) andscrew (S-8). Then, desolder connectors (CN201,CL401, CL402, CL403) and lift up the Deck Unit.
8. Removal of the Main CBA. Remove four screws (S-9) and pull up the MainCBA.
9. Removal of the CRT. Remove four screws (S-10) and pull the CRT back-ward.
(S-1)
(S-2)(S-2)
[1] REAR CABINET
(S-1) Fig. 1
(S-1) (S-1)
(S-1)(S-2)
(S-1)
(S-2)
[1] REAR CABINET Fig. 2
1-5-3 T6605DC
A
A
(S-7) (S-8)
Fig. 3
[2] Power Unit and Tray Chassis Unit
[5] H.V./Power Supply CBA
(S-3)(S-3)
[3] Power Unit
Power Button
(S-3)
(S-4)
(S-4)
(S-4)
(S-5)
[7] Bottom Plate
CL604(S-4)(S-6)
(S-9)(S-9)
(S-9)
(S-9)
(S-6)
(S-6)
(S-6)
[8] Deck Unit
[6] Top Cover
[9] Main CBA
[4] Tray Chassis Unit
1-5-4 T6605DC
Fig. 4
(S-10)
(S-10)
(S-10)
(S-10)Anode Cap
[10] CRT
CRT CBA
1-5-5 T6605DC
CN151
TO SPEAKER
FE HEAD
CYLINDER ASSEMBLY
ACE HEADASSEMBLY
CAPSTANMOTOR
DECK UNIT
CN201
CL402
CL401
CL403
CL302A
CL603A
CL301A
MAIN CBA
CN501SCREEN FOCUS
CN502
CN501B
CL501A
CN601
CN552
CN551
CN602
CRT
ANODE
GND
H.V./POWER SUPPLY CBA
TO DEGAUSS COIL
CRT CBA
Fig. 5
CL604TO TOP COVER
1-5-6 T6705DC
[ T6607VF ]1. Disassembly FlowchartThis flowchart indicates the disassembly steps for thecabinet parts, and the CBA in order to gain access toitem(s) to be serviced. When reassembling, follow thesteps in reverse order. Bend, route and dress thecables as they were.Caution !!When removing the CRT, be sure to discharge theAnode Lead of the CRT with the CRT Ground Wirebefore removing the Anode Cap.
2. Disassembly Method
(1): Order of steps in Procedure. When reassembling,follow the steps in reverse order.These numbersare also used as the identification (location) No. ofparts in Figures.
(2): Parts to be removed or installed.(3): Fig. No. showing Procedure of Part Location.(4): Identification of part to be removed, unhooked,
unlocked, released, unplugged, unclamped, ordesoldered.S=Screw, P=Spring, L=Locking Tab, CN=Connec-tor, *=Unhook, Unlock, Release, Unplug, or Desol-der2(S-2) = two Screw (S-2)
(5): Refer to the following "Reference Notes in theTable."
Reference Notes in the Table1. Removal of the Rear Cabinet.
Remove six screws (S-1) and two screws (S-2).Disconnect connector CN151 and remove the RearCabinet.
Caution !!Discharge the Anode Lead of the CRT with the CRTGround Wire before removing the Anode Cap.2. Removal of the Power Unit and Tray Chassis Unit.
Discharge the Anode Lead of the CRT with theCRT Ground before removing the Anode Cap.Disconnect the following: Anode Cap, CN501,CN551, CN601, CRT CBA, and Power Button.Then pull the Power Unit and Tray Chassis Unit outbackward.
3. Removal of the Power Unit. Disconnect connectors CN502, CN552, andCN602. Then slide the Power Unit out.
4. Removal of the H.V./Power Supply CBA. Remove six screws (S-3) and pull up the H.V./Power Supply CBA.
5. Removal of the Top Cover.Remove five screws (S-4) and CL604, and removethe Top Cover.
ID/LOC.No.
PART
REMOVAL
Fig. No.
REMOVE/*UNHOOK/UNLOCK/RELEASE/UNPLUG/DESOLDER
Note
[1] Rear Cabinet 1,2,56(S-1), 2(S-2), *CN151 1
[2]Power Unit and Tray Chassis Unit
3,4,5
Anode Cap, *CN501, *CN551, *CN601, CRT CBA, Power Knob
2
[3] Power Unit 3,5 *CN502, *CN552, *CN602 3
[4]Tray Chassis Unit
3 ---------- -
[5]H.V./Power Supply CBA
3 6(S-3) 4
[6] Top Cover 3 5(S-4), CL604 5[7] Bottom Plate 3 (S-5) 6
[1] Rear Cabinet
[2] Power Unit and Tray Chassis Unit
[3] Power Unit[5] H.V./PowerSupply CBA
[4] Tray Chassis Unit
[6] Top Cover
[7] Bottom Plate
[8] Deck Unit
[9] Main CBA
[10] CRT
[8] Deck Unit 3, 57(S-6), (S-7), (S-8), Desolder *(CN201, CL401, CL402, CL403)
7
[9] Main CBA 3 4(S-9) 8[10] CRT 4 4(S-10) 9(1)
(2)
(3)
(4)
(5)
ID/LOC.No.
PART
REMOVAL
Fig. No.
REMOVE/*UNHOOK/UNLOCK/RELEASE/UNPLUG/DESOLDER
Note
1-5-7 T6705DC
6. Removal of the Bottom Plate.Remove a screw (S-5). Then slide the Bottom Plateout front.
7. Removal of the Deck Unit.Remove seven screws (S-6), screw (S-7) andscrew (S-8). Then, desolder connectors (CN201,CL401, CL402, CL403) and lift up the Deck Unit.
8. Removal of the Main CBA. Remove four screws (S-9) and pull up the MainCBA.
9. Removal of the CRT. Remove four screws (S-10) and pull the CRT back-ward.
(S-2)
(S-1)
(S-1)
(S-1)
(S-1) (S-1)
(S-1)
(S-2)
[1] REAR CABINET
Fig. 1
(S-1)(S-1)
(S-1)
(S-1)(S-1)(S-1)
(S-2)
[1] REAR CABINET Fig. 2
1-5-8 T6705DC
(S-7) (S-8)
A
A
Fig. 3
[2] Power Unit and Tray Chassis Unit
[5] H.V./Power Supply CBA
(S-3)
(S-3)
(S-3)
[3] Power Unit
Power Button
(S-3)
(S-4)(S-4)
(S-5)
[7] Bottom Plate
(S-4)
CL604
(S-4)
(S-4)(S-6)
(S-9)(S-9)
(S-9)
(S-9)
(S-6)
(S-6)
(S-6)
[8] Deck Unit
[6] Top Cover
[9] Main CBA
[4] Tray Chassis Unit
1-5-9 T6705DC
Fig. 4
(S-10)
(S-10)
(S-10)
(S-10) Anode Cap
[10] CRT
CRT CBA
1-5-10 T6705DC
CN151
TO SPEAKER
FE HEAD
CYLINDER ASSEMBLY
ACE HEADASSEMBLY
CAPSTANMOTOR
DECK UNIT
CN201
CL402
CL401
CL403
CL302A
CL603A
CL301A
MAIN CBA
CN501SCREEN FOCUS
CN502
CN501B
CL501A
CN601
CN552
CN551
CN602
CRT
ANODE
GND
H.V./POWER SUPPLY CBA
TO DEGAUSS COIL
CRT CBA
Fig. 5
CL604TO TOP COVER
1-6-1 T6605EA
ELECTRICAL ADJUSTMENT INSTRUCTIONSGeneral Note:
"CBA" is abbreviation for "Circuit Board Assembly."
NOTE: Electrical adjustments are required after replacingcircuit components and certain mechanical parts.It is important to perform these adjustments onlyafter all repairs and replacements have been com-pleted.Also, do not attempt these adjustments unless theproper equipment is available.
Test Equipment Required1. PAL Pattern Generator (Color Bar, Monoscope,
Black Raster, White Raster, Sympte)2. SECAM Pattern Generator (Gray Scale)3. AC Milli Voltmeter (RMS)4. Alignment Tape (FL6A), Blank Tape (E180)5. DC Voltmeter6. Oscilloscope: Dual-trace with 10:1 probe,
V-Range: 0.001~50V/Div,F-Range: DC~AC-60MHz
7. Frequency Counter8. Plastic Tip Driver9. RF input (at each broadcasting system)
Receiving Channel : VHF LowInput level : 80dBV
10.Ext.inputFRONT VIDEO-IN JACK or REAR SCART JACK
How to Set up the Service mode:NOTE:
After replacing the IC202 (Memory) or Main CBA,the set value in IC202 (Memory) will be lost. So itis necessary to set up or adjust in the Servicemode after its replacement.
Service Mode:1. Turn the power on. (Use main power on the TV
unit.)2. Press [STANDBY/ON], [2], [7], [1], and [MUTE] but-
tons on the remote control unit in that order within 5seconds.
- To cancel the service mode, press [STANDBY/ON]button on the remote control.
How to set up the option code1. Enter the Service mode.2. Press the [STATUS] button on the remote control
unit. The option code appears on the display.3. If needed, input the option code (0130) using num-
ber buttons on the remote control unit.
4. To reset the software, press [PAUSE] and [5] but-tons on the remote control unit.The option code is changed.
1-6-2 T6605EA
[ T6605VF ]1. DC 105V (+B) AdjustmentPurpose: To obtain correct operation.Symptom of Misadjustment: The picture is dark andunit does not operate correctly.
Note: TP503(+B), TP504(GND), VR601 --- H.V./PowerSupply CBA1. Connect the unit to AC Power Outlet. (exact
AC230V)2. Input a color bar signal from RF (or Ext.) input and
leave it for at least 20 minutes. 3. Connect DC Volt Meter to TP503(+B) and
TP504(GND).4. Adjust VR601 so that the voltage of TP503(+B)
becomes +1050.5V DC.
[ T6705VF ]1. DC 114V (+B) AdjustmentPurpose: To obtain correct operation.Symptom of Misadjustment: The picture is dark andunit does not operate correctly.
Note: TP503(+B), TP504(GND), VR601 --- H.V./PowerSupply CBA1. Connect the unit to AC Power Outlet. (exact
AC230V)2. Input a color bar signal from RF (or Ext.) input and
leave it for at least 20 minutes. 3. Connect DC Volt Meter to TP503(+B) and
TP504(GND).4. Adjust VR601 so that the voltage of TP503(+B)
becomes +1140.5V DC.
2. H AdjustmentPurpose: To get correct horizontal position and size ofscreen image.Symptom of Misadjustment: Horizontal position andsize of screen image may not be properly displayed.
Note: R590 --- H.V./Power Supply CBA1. Connect Frequency Counter to R590.2. Set the unit to the Ext. mode and no input is neces-
sary. Enter the Service mode. (See page 1-6-1.)
3. Operate the unit for at least 20 minutes.4. Press [2] button on the remote control unit and
select H-Adj mode. 5. Press [PROG+/PROG-] buttons on the remote con-
trol unit so that the display will change [0] to [7.] At this moment, choose display [0] to [7] when theFrequency counter display is closest to15.625kHz250Hz.
6. Turn the power off and on again.
Test point Adj. Point Mode InputTP503(+B),
TP504(GND)
VR601 RF(or Ext.)Color Bar
Tape M. EQ. Spec.
---
DC Voltmeter,Plastic Tip Driver +1050.5V DC
Test point Adj. Point Mode InputTP503(+B),
TP504(GND)
VR601 RF(or Ext.)Color Bar
Tape M. EQ. Spec.
---
DC Voltmeter,Plastic Tip Driver +1140.5V DC
Test point Adj. Point Mode Input
R590 PROG+/PROG- buttons Ext. ---
Tape M. EQ. Spec.
--- Frequency Counter 15.625kHz250Hz
1-6-3 T6605EA
3. C-Trap AdjustmentPurpose: To get minimum leakage of the color signalcarrier.Symptom of Misadjustment: If C-Trap Adjustment isincorrect, stripes will appear on the screen.
Note: J349F3 (B-Out)--- Main CBA1. Connect Oscilloscope to J349F3.2. Input a color bar signal from RF (or Ext.) input.
Enter the Service mode. (See page 1-6-1.) 3. Press [0] button on the remote control unit and
select C-TRAP mode. 4. Press [PROG+/PROG-] buttons on the remote con-
trol unit so that the carrier leakage B-Out(4.43MHz) value becomes minimum on the oscillo-scope.
5. Turn the power off and on again.
4. SECAM Black Level AdjustmentPurpose: To set Black Level of the SECAM signal R-Y/B-Y to Ref. level.Symptom of Misadjustment: If Black Level of theSECAM signal R-Y/B-Y is incorrect, the picture is blu-ish or reddish in grayscale compared with PAL signal.
1. Degauss the CRT and allow CRT to operate for 20minutes before starting the alignment.
2. Input the SECAM Gray Scale signal from Ext.input.
3. Enter the service mode. (See page 1-6-1.) 4. To enter the C/D/S mode, press [VOL-] on the
remote control unit.5. To select SBR (SECAM Black Level R-Y), press [6]
button on the remote control unit.6. Press [PROG+/PROG-] buttons to adjust Y signal
to the black ref. level.7. To select SBB (SECAM Black Level B-Y), press [7]
button on the remote control unit.8. Press [PROG+/PROG-] buttons to adjust Y signal
to the black ref. level.
Test point Adj. Point Mode InputJ349F3(B-OUT)
PROG+/PROG- buttons
RF(or Ext.) Color Bar
Tape M. EQ. Spec.
---
Oscilloscope,Pattern Generator 200mVp-p Max.
Figure
minimum
Fig. 1
Test point Adj. Point Mode Input
J361G4 PROG+/PROG- buttons Ext.SECAM
Gray Scale
Tape M. EQ. Spec.
---
Pattern Generator, Analog Oscilloscope (unus-able Digital Oscilloscope)
---
5mV/Div (10:1 Prove)
Y Signal
1H
1H
1HBlack REF. Level
Fig. 4
1-6-4 T6605EA
5. V. Size AdjustmentPurpose: To obtain correct vertical height of screenimage.Symptom of Misadjustment: If V. Size is incorrect,vertical height of image on the screen may not beproperly displayed.
1. Enter the Service mode. (See page 1-6-1.) Press [9] button on the remote control unit andselect V-S mode. (Press [9] button then display willchange to V-P and V-S).
2. Input monoscope pattern and leave it for at least 20minutes.
3. Press [PROG+/PROG-] buttons on the remote con-trol unit so that the monoscope pattern is 905% ofdisplay size and the circle is round.
6. V. Shift AdjustmentPurpose: To obtain correct vertical position of screenimage.Symptom of Misadjustment: If V. position is incor-rect, vertical position of image on the screen may notbe properly displayed.
1. Enter the Service mode. (See page 1-6-1.) Press [9] button on the remote control unit andselect V-P mode. (Press [9] button then display willchange to V-P and V-S).
2. Input monoscope pattern and leave it for at least 20minutes.
3. Press [PROG+/PROG-] buttons on the remote con-trol unit so that the top and bottom of the mono-scope pattern are equal to each other.
7. H. Shift AdjustmentPurpose: To obtain correct horizontal position andsize of screen image.Symptom of Misadjustment: Horizontal position andsize of screen image may not be properly displayed.
1. Enter the Service mode. (See page 1-6-1.) Press [8] button on the remote control unit andselect H-P mode.
2. Input monoscope pattern and leave it for at least 20minutes.
3. Press [PROG+/PROG-] buttons on the remote con-trol unit so that the left and right side of the mono-scope pattern are equal to each other.
4. Turn the power off and on again.
8. Cut-off AdjustmentPurpose: To adjust the beam current of R, G, B, andscreen voltage.Symptom of Misadjustment: White color may bereddish, greenish or bluish.
Notes: Screen Control (FBT) --- H.V./Power Supply CBAFBT= Fly Back TransformerUse the Remote Control Unit
1. Degauss the CRT and allow CRT to operate for 20minutes before starting the alignment.
2. Set the screen control to minimum position. Inputthe Black raster signal from RF (or Ext.) input.
3. Enter the service mode. (See page 1-6-1.)Dimmed horizontal line appears on the CRT.
4. To enter the C/D/S mode, press the [VOL-] buttonon the remote control unit.
5. To enter the CUT OFF (R) mode, press [1] buttonon the remote control unit.
6. Turn the screen control up until dimmed horizontalline appears.
Test point Adj. Point Mode Input
Screen PROG+/PROG- buttonsRF
(or Ext.) Monoscope
Tape M. EQ. Spec.
--- Pattern Generator 905%
Test point Adj. Point Mode Input
Screen PROG+/PROG- buttonsRF
(or Ext.) Monoscope
Tape M. EQ. Spec.
--- Pattern Generator 905%
Test point Adj. Point Mode Input
Screen PROG+/PROG- buttonsRF
(or Ext.) Monoscope
Tape M. EQ. Spec.
--- Pattern Generator 905%
Test point Adj. Point Mode Input
ScreenScreen-Control, PROG+/PROG-
buttonsRF
(or Ext.)Black Ras-
ter
Tape M. EQ. Spec.
--- Pattern Generator See Reference Notes below
1-6-5 T6605EA
7. Press the [PROG+/PROG-] buttons until the hori-zontal line becomes white.
8. To enter the CUT OFF (G) mode, press [2] buttonon the remote control unit.
9. Press the [PROG+/PROG-] buttons until the hori-zontal line becomes white.
10.To enter the CUT OFF (B) mode, press [3] buttonon the remote control unit.
11.Press the [PROG+/PROG-] buttons until the hori-zontal line becomes white.
12.Turn the screen control so that the horizontal lineadjusted white looks lightly.
13.Turn the power off and on again.
9. White Balance AdjustmentPurpose: To mix red, green and blue beams correctlyfor pure white. Symptom of Misadjustment: White becomes bluishor reddish.
Note: Use remote control unit 1. Operate the unit more than 20 minutes. 2. Face the unit to east. Degauss the CRT using De-
gaussing Coil. 3. Input the White Raster (APL 100%). 4. Set the color analyzer to the CHROMA mode and
after zero point calibration, bring the optical recep-tor to the center on the tube surface (CRT).
5. Enter the Service mode. Press [VOL-] button onthe remote control.
6. Press [4] button on the remote control unit for Redadjustment. Press [5] button on the remote controlunit for Blue adjustment.
7. In each color mode, Press [PROG+/PROG-] but-tons to adjust the values of color.
8. Adjusting Red and Blue color so that the tempera-ture becomes 8500K (x : 290 / y : 300) 3%.
9. At this time, Re-check that Horizontal line is white.If not, Re-adjust Cut-off Adjustment until the Hori-zontal Line becomes pure white.
10. Turn off and on again to return to normal mode. Re-ceive APL 100% white signal and Check Chromatemperatures become 8500K (x : 290 / y : 300) 3%.
Note: Confirm that Cut Off Adj. is correct after thisadjustment, and attempt Cut Off Adj. if needed.
Test point Adj. Point Mode Input
ScreenScreen-Control,PROG+/PROG-
buttonsRF
(or Ext.)White Raster
(APL 100%)Tape M. EQ. Spec.
---
Pattern Generator,Color analyzer See below
Figure
Color Ajalyzer Fig. 5
1-6-6 T6605EA
10. Sub-Brightness AdjustmentPurpose: To get proper brightness.Symptom of Misadjustment: If Sub-Brightness isincorrect, proper brightness cannot be obtained byadjusting the Brightness Control.
Note: Bar (A) in Fig. 7 --- 0 IRE1. Enter the service mode. (See page 1-6-1.)
Then input SYMPTE signal from RF (or Ext.) inputand leave it for at least 20 minutes.
2. Press [MENU] button. (Each time [MENU] button ispressed, display will change BRT, CNT, COL, TNT,and SHP in that order.) Select BRT and press[PROG+/PROG-] buttons so that the bar (A) in Fig.6 is just visible.
3. Turn the power off and on again.
11. Setting for CONTRAST, COLOR, TINT and SHARP Data ValuesGeneral 1. Enter the Service mode. (See page 1-6-1) 2. Press [MENU] button. (Each time [MENU] button is
pressed, display will change BRT, CNT, COL, TNT,and SHP in that order.)
CONTRAST (CNT) 1. Press [MENU] button on the remote control unit.
Then select CNT display. 2. Press [PROG+/PROG-] buttons on the remote
control unit so that the value of "CONTRAST"(CNT) becomes 83.
COLOR (COL) 1. Press [MENU] button on the remote control unit.
Then select "COLOR" (COL) display. 2. Press [PROG+/PROG-] buttons on the remote
control unit so that the value of "COLOR" (COL)becomes 65.
TINT (TNT) 1. Press [MENU] button on the remote control unit.
Then select "TINT" (TNT) display. 2. Press [PROG+/PROG-] buttons on the remote
control unit so that the value of "TINT" (TNT) be-comes 68.
SHARP (SHP)[ T6605VF ] 1. Press [MENU] button on the remote control unit.
Then select "SHARP" (SHP) display. 2. Press [PROG+/PROG-] buttons on the remote
control unit and select "1."
[ T6705VF ] 1. Press [MENU] button on the remote control unit.
Then select "SHARP" (SHP) display. 2. Press [PROG+/PROG-] buttons on the remote
control unit and select "0."
Test point Adj. Point Mode Input
Screen PROG+/PROG- buttonsRF
(or Ext.) SYMPTE
Tape M. EQ. Spec.
---
PatternGenerator See below
Figure
BlackWhite
This bar(A) justvisibleA B C
Fig. 6
1-6-7 T6605EA
12. Focus AdjustmentPurpose: Set the optimum Focus.Symptom of Misadjustment: If Focus Adjustment isincorrect, blurred images are shown on the display.
Note: Focus VR (FBT) --- H.V./Power Supply CBA FBT= Fly Back Transformer1. Operate the unit more than 30 minutes.2. Face the unit to the East and degauss the CRT
using a Degaussing Coil.3. Input the monoscope pattern.4. Adjust the Focus Control on the FBT to obtain clear
picture.
13. Head Switching Position AdjustmentPurpose: Determine the Head Switching Position dur-ing Playback.Symptom of Misadjustment: May cause HeadSwitching Noise or Vertical Jitter in the picture.Note: Unit reads Head Switching Position automati-cally and displays it on the screen (Upper Left Corner).Manual Adjustment1. Enter the service mode. (See page 1-6-1.) 2. Playback the test tape (FL6A).3. Press the number [5] button on the remote control
unit.4. The Head Switching position will display on the
screen; if adjustment is necessary follow step 4.7.0H (448s) is preferable.
5. Press [PROG+/PROG-] buttons on the remote con-trol unit if necessary. The value will be changed in0.5H steps up or down. Adjustable range is up to9.5H. If the value is beyond adjustable range, thedisplay will change as:
Lower out of range: 0.0HUpper out of range: -.-H
6. Turn the power off and on again.
Auto Adjustment1. Load the test tape (FL6A) that have been recorded
the Head Switching Position Value. 2. Enter the service mode.3. Press [3] button on the remote control unit in the
tape stop mode. The unit playback and adjust theHead Switching Position automatically.
4. The adjusting report appears on upper left cornerof the screen with blueback. In case of adjusting correctly: the Head SwitchingPosition Value recorded in the test tape (FL6A) isindicated with green. In case of adjusting incorrectly: "NG" (red) is indi-cated with ejecting tape.
l
Test point Adj. Point Mode Input
Screen Focus Control RF(or Ext.) Monoscope
Tape M. EQ. Spec.
--- Pattern Generator See below.
NG
Incorrect
7.0H
Correct
TVCR TVCR
Fig. 7
1-7-1
BLOCK DIAGRAMSServo/System Control Block Diagram
T6605BLS
CONT
ROL
HEA
D
CL40
2 A
C HE
AD A
SSEM
BLY
MA
IN C
BA
KEY-
2
RF-
SW
ST-S
ENS.
T-R
EEL
KEY-
1
DV-
SYNC
C-SY
NCC-
SYNC
V-EN
V
REM
OTE
CTL(+
)
RES
ET
C-RO
TA
REC
-SAF
ETY
A-M
UTE-
H
SCL
SDA
A-M
UTE-
H
CTL(-
)
RF-
SW
DV-
SYNC
V-EN
VC-
ROTA
END
-SEN
S.
IC20
1(S
ERVO
/SYS
TEM
CONT
ROL)
14 9495 10 4 80 34
18156137431207287R
S201
REM
OTE
SENS
OR
CTL
AMP-
OUT
97
AL+5
V
D20
1S-
LED
CTL
TP00
1
(DEC
K A
SSEM
BLY)
END
-SEN
S.T-
REE
LST
-SEN
S.Q2
02Q2
05Q2
01
Q204
RES
ETTI
MER
+5V
47
EXT-
L
SP-M
UTE
SP-M
UTE
44
SW21
1R
EC SAFE
TY
TO
VID
EO B
LOCK
TO
AUDI
O B
LOCK
KEY
SWIT
CH
KEY
SWIT
CHSW
201
SW
205
SCL
(MEM
ORY)
SDA
6 5
REC
-LED
24R
EC-L
ED23
P-D
OW
N-L
85P-
ON-
HP-
DO
WN-
LP-
ON-
H67
D20
2R
ECAL
+5V
LD-S
W9
I2 C-O
PEN
4571
AL+5
VSW
212
LD-S
W
CS7
TO P
OW
ER
SUPP
LY B
LOCK
SW20
6
SW21
0
SDA
SCL
TO
TV B
LOCK
SDA
SCL
IC20
2
WF3
I2 C-O
PEN
M
M
LOAD
ING
MO
TOR
CYLI
NDER
ASS
EMBL
YCA
PSTA
N M
OTO
R
SENS
OR
CBA
(ST-
SENS
OR)
SENS
OR
CBA
(END
-SEN
SOR)
DR
UMM
OTO
R
PG SENS
OR
4C-
F/R
1CM
+12V
11AL
+12V
(1)
2P-
ON+
5V(3)
6FG
-GND
3C-
FG
5C-
CONT
10M
-GND
7LD
-CO
NT8
D-C
ONT
9D
-PFG
12VG
CN20
1
C-FG
C-CO
NT
D-P
FG
C-F/
R
907687 78
LD-C
ONT
81D
-CO
NT77
CM+1
2V
AL+1
2V(1)
P-O
N+5V
(3)
MCA
PSTA
NM
OTO
R
D-R
EC-H
D-R
EC-H
SDA
SCL
42 48 29
EXT-
LSC
ART-
HSC
ART-
MUT
E
SCAR
T-H
SCAR
T-M
UTE
D20
4ST
AND
BY
2CT
L(+)
1CT
L(-)
+33
V
1-7-2 T6605BLV
Video Block Diagram
CYLI
NDER
ASS
EMBL
Y
V(R)
V-CO
MV(
L)
CL40
11 2 3
(D
ECK
ASSE
MBLY
)
VID
EO (R
) H
EAD
SP HEAD
AMP
REC
FM
AGC
TO S
ERVO
/SYS
TEM
CONT
ROL
BLO
CK
TO
SERV
O/S
YSTE
MCO
NTRO
L BL
OCK
C-SY
NC
RF-
SWD
-REC
-H
C-RO
TAD
V-SY
NC
V-EN
V
LUM
INAN
CESI
GNA
L PR
OCE
SS
CHRO
MIN
ANCE
SIG
NAL
PRO
CESS
C-SY
NCV-
ENV
DV-
SYNC
RF-
SW/C
-RO
TA
VID
EO (L
) H
EAD
IC40
1(V
IDEO
/AUD
IO S
IGNA
L PRO
CESS
)
REC
-VID
EO S
IGNA
L
PB
-VID
EO S
IGNA
L
MO
DE: S
P/RE
C
SERI
ALD
ECO
RDER
48 52 54 56 61 63
96 95 93 94
CHAR
A.IN
S.CC
D 1H
DEL
AY
BYPA
SS
MUT
E
PB/E
ETU
NER
TUNE
R
MUT
E
PB/E
ELI
NE
SCAR
T
LIN
ESC
ART
AGC
PR
R Y C
P
RP
RP
Y. D
ELAY
Y/C
MIX
+ 2179
78
AGC
VXO
FBC
1/2
585965
2928
SDA
SCL
6968
4643
67846270
D-R
EC-H
80
TP00
3V-
OUT
WF5
TP00
8C-
PBW
F6
MA
IN C
BA
TP00
2R
F-SW
WF1
X401
4.43
MH
z
17
Q703
JK70
1 V-
INVID
EO O
UT
TU00
1 20
BUFF
ER
BUFF
ERQ4
01
TP01
0G
ND
TO
TV B
LOCK
VID
EO
TU-V
IDEO
TO
TV B
LOCK
C-VI
DEO
JK70
3V-
INV-
OUT
19
WF4
WF2
1-7-3 T6605BLA
Audio Block Diagram
REC
AMP
100
3AU
TOBI
AS21
+5V
+5V
Q854
Q856
BIAS
OSC
Q855
Q853
(PB=
ON)
Q852
(PB=
ON)
Q851
SWIT
CHIN
GD
-REC
-OFF5
EQ AMP
98
7
LIN
EAM
P
REC
-ON
TP00
7
AUD
IO H
D-SW
CONT
ROL
MUT
E11
6
PB-O
N
SW C
TL
SP/L
P-O
N
PR
ALC
DET ALC
IC40
1(A
UDIO
SIG
NAL
PRO
CESS
)
IC70
1(S
W)
13 17
3A-
PB/R
ECCL
402
4A-
COM
6AE
-H5
AE-H
/FE-
H
AUD
IOH
EAD
AUD
IOER
ASE
HEA
D ACE
HEAD
ASS
EMBL
Y
FE H
EAD
1FE
-H2
FE-H
-GND
CL40
3
MA
IN C
BA
PB-A
UDIO
SIG
NAL
REC
-AUD
IO S
IGNA
LM
ode
: SP/
REC
71
A-M
UTE-
H
SCL
SDA
TO SERV
O/S
YSTE
M
CONT
ROL
BLO
CK
TO SE
RVO
/SYS
TEM
CO
NTRO
L BL
OCK
FULL
ERAS
EH
EAD
6869
SERI
ALD
ECO
DER
(D
ECK
ASSE
MBLY
)
12
16
INV
ATT
IC30
1
71
IC15
1 (A
MP)
(VID
EO/AU
DIO
/CHR
OM
A/DE
FLEC
TIO
N/IF
)
SP1
SP-G
ND2
JK15
1H
EAD
PHO
NE J
ACK S
P151
SPEA
KER
CN80
4CL
801
SP2
SP-G
ND1
CN15
1
SP-M
UTE
OUT
PUT
AMP
5052 53 54
MUT
E5
1 215
5 34
1214
6
2 1
AUD
IO O
UT
TU00
1
JK70
2 A-
IN
JK70
3
SCAR
TLI
NE
SCAR
TLI
NE
A-IN
A-O
UT
Q701
1011
9
SCAR
T-H
EXT-
LSC
ART-
MUT
E
TUNE
R
TUNE
R
LIN
E
LIN
E
N-A
-PB
ATT
AUD
IOM
UTE
WF7
WF9
WF8
TO SERV
O/S
YSTE
M
CONT
ROL
BLO
CK
A B
Com
paris
on C
hart
of
Mod
els
& M
arks
Mod
elM
ark
T660
5VF
T670
5VF
A B
1-7-4 T6605BLT
TV Block Diagram
X301
4.43
MHz
CL30
1A
CL30
2A
IC30
1(VI
DEO/
AUDI
O/C
HRO
MA/
DEFL
ECTI
ON/
IF)
IC20
1(S
YSTE
M CO
NTRO
L/O
SD)
V-SY
NC
TEXT
-L
OSD
-RO
SD-G
OSD
-BO
SD-B
LK
H-S
YNC
SLOW
-SW C
-VID
EOC-
VIDE
O
RAP
ID-S
W
OSD
-G
OSD
-R
OSD
-B
59 586062636482
TU-V
IDEO
TO VID
EO B
LOCK
TO CRT/
H.V.
BL
OCK
CL30
1B
TO CRT/
H.V.
BL
OCK
CL
302B
BLUE
2G
REEN
1R
ED
SDA
SCL
TO
SERV
O/S
YSTE
MCO
NTRO
L BL
OCK
TO VID
EO
BLO
CK
REC
VID
EO S
IGNA
LPB
VID
EO S
IGNA
LM
ode
: SP/
REC
WF1
8W
F17
WF1
0
WF1
1
CN30
3(N
O CO
NNEC
TION)
CN30
3 is
used
for
adju
stmen
t at fa
ctor
y
I2 C-O
PEN
3
FBP
2H
-DR
IVE
1AC
L5
V-R
AMP-
FB4
V-D
RIV
E3
MA
IN C
BA
32
2117 1213302820271110
14 311516 6 7
43
36VI
DEO
34
CHRO
MA
TRAP
SERI
ALI/F IN
TELL
IGEN
TM
ONI
TORI
NG
CHRO
MA
BPF
PAL
DEC
ODE
RSE
CAM
DEC
ODE
R
BASE
BAN
D1H
DEL
AY L
INE
SYNC
SEPA
RAT
ION
LUM
ASI
GNA
LPR
OCE
SSCI
RCUI
T
H-S
YNC
PRO
CESS
CIRC
UIT
V-SY
NCPR
OCE
SSCI
RCUI
T
OSD
MIX
/RBG
MAT
RIX
/BL
ANKI
NG
TUNE
R
LIN
E/PB
TUNE
R
LIN
E/PB
CLO
CKCO
NTRO
LCI
RCUI
T
SW C
TL
IC70
3(S
W)
5 34
2 115
12 1314
7168 11 15
56
61 6568
JK70
3
109
11Q7
10
Q702
Q706
Q704
+5V
+5V
Q711
SLOW
-SW
-IN
RG
B-CO
NTR
APID
-SW
-IN
INV
INT.M
ONIT
OR1
I2 C-O
PEN
2SD
A4
SCL
5
1-7-5
CRT/H.V. Block Diagram
T6605BLCRT
PUM
P UP
AMP
THER
MAL
PROT
ECTI
ON
36
7 15
8 10 7 9 6
GRE
EN A
MP
BLUE
AM
P
Q501
Q502
Q503
H.D
RIV
EQ5
33
Q551
T552
V- DR
IVE
H-
DR
IVE
DEF
LECT
ION-
YOKE
BA
IC55
1 (V-
DEF
LECT
ION
CONT
ROL)
T551
F.B.
T.
ANO
DE
FOCU
SSC
REEN
CRT
CBA
R G B HEAT
ER
ANO
DE
GND
V501
CRT
GND
FOCU
SSC
REEN
JK50
1
HEA
TER
11
CN50
1
CL50
1BCL
501A
REC
VID
EO S
IGNA
LPB
VID
EO S
IGNA
L
CN55
1
P-O
N+16
0V3
3
TO TV
BLO
CK
CL30
2A
11SFHV
FOCU
S VR
SCRE
EN V
R
+B
TO
POW
ER S
UPPL
Y BL
OCK
D
EF+B
H.O
UTPU
T
1 5 3 4
5 4 3 1W
F12
WF1
5W
F14
WF1
6
WF1
3
RED
AM
P
Mod
e : S
P/RE
C
CN50
2
2VC
C
3 21
CN30
1CL
301B
TO TV
BLO
CKCL
301A
JUNC
TIO
N-C
CBA
JUNC
TIO
N-B
CBA
CN55
2CN
302
CL30
2B
H.V
./P
OWER
SUP
PLY
CBA
32
RED
14
GRE
EN2
3BL
UE
33
V-D
RIV
E
11
H-D
RIV
E2
2FB
P
55
ACL
44
V-R
AMP-
FB312 5 4
Com
paris
on C
hart
of
Mod
els
& M
arks
Mod
elM
ark
T660
5VF
T670
5VF
A B
1-7-6
Power Supply Block Diagram
T6605BLP
6 4 2 1
14 13 11 10 9 8
LIN
EFI
LTER
BRID
GE
REC
TIFI
ER
T601
IC60
1ER
ROR
VOLT
AGE
DET
W60
1
F601
T4A/
250V
L601
D60
1 - D
604
SWIT
CHIN
G
Q604
VR60
1
DEG
AUSS
ING
COIL
CN60
1
J603
A2J6
04A2
Q602
+B
ADJ.
FEED
BACK
LIM
ITER
Q603
PS60
2
A B
41
32
HOT
COLD
Q608
DG
601
MA
IN C
BA
NOT
E :
The
volta
ge fo
r pa
rts in
hot
circ
uit i
s m
easu
red
usin
gho
t GND
as
a co
mm
on te
rmin
al.
CAUT
ION
!Fi
xed
volta
ge p
owe
r su
pply
circu
it is
used
in th
is un
it.If
Mai
n Fu
se (F
601)
is blo
wn
, ch
eck
to s
ee th
at a
ll co
mpo
nent
s in
the
pow
er
supp
lyci
rcui
t are
not
def
ect
ive b
efo
re y
ou
co
nn
ect
the
AC pl
ug to
the
AC po
we
r su
pply.
Oth
erwi
se it
may
cau
se s
ome
com
pone
nts
in th
e po
we
r su
pply
circu
it to
fail.
TIM
ER+5
V
P-D
OWN
-L(TO
PIN
85 O
F IC
201)
P-O
N-O
NAL+
9V
P-O
N+8V
AL+1
2V(2)
AL+1
2V(1)
AL+5
V
+5.
7VR
EG.
IC30
1
3955
+B DEF
+B
POW
ER
SW60
1SW
602
+5V
REG
.Q6
06Q6
05
+8V
REG
.Q6
07
AL+5
VP-
ON+
8VP-
ON-
LP-
DOW
N-L
125 46
AL+1
2V(1)
3AL
+12V
(2)7
AL+9
V8
AL+3
3V11
125 4637811
TO
CRT/
H.V.
BLO
CK
TP50
3+
B TP
504
GND
CN60
2
12
JUNC
TIO
N-A
CBA
H.V
./P
OWER
SUP
PLY
CBA
CL60
3BCN
603
P-O
N-H
(TO P
IN67
OF
IC20
1)
+5V REG
.
+5V REG
.
+5V REG
.
IC68
1
Q684 Q
686
P-O
N+5V
(1)
P-O
N+5V
(3)
P-O
N+5V
(2)
AL+3
3V
CM+1
2V
CL60
3A
125 4637811
125 4637811
CAUT
ION
FOR
CONT
INUE
D PR
OTE
CTIO
N AG
AINS
T FI
RE H
AZAR
D,R
EPLA
CE O
NLY
WIT
H TH
E SA
ME
TYPE
T4A
/250
V FU
SE.
Q682
Q206
LIN
EFI
LTER
L602
CL60
4TO
PCO
VER
Com
paris
on C
hart
of
Mod
els
& M
arks
Mod
elM
ark
T660
5VF
T670
5VF
A B
B A
1-7-7 T6550MTI
MECHANICAL TROUBLE INDICATOR1, Each Malfunction IndicationIf the MONITOR is turned ON right after the Mechani-cal Malfunction occurs or POWER SAFETY/X-RAY isturned ON, display the following character to showMalfunction after the EJECT display.
Example: If REEL Malfunction
2, Each Malfunction evaluationmethodX-RAY protectIf X-RAY port becomes continuously 2.5V or more for120 msec. (4 times 40 msec. interval), the unit shallimmediately turn OFF the POWER/MONITOR andswitch over to the Mechanical Malfunction mode withPOWER OFF.(To return from this mode shall become possible onlyby POWER Key as in the case of the Mechanical Mal-function).
POWER SAFETY1) POWER SAFETY 1
If P-SAFETY 1 port becomes continuously 2.5V orless for 120 msec. (4 times 40 msec. interval) whenMONITOR is ON, the unit shall be assumed to bethe Power Malfunction 1 and immediately turn OFFthe POWER/MONITOR and switch over theMechanical Malfunction mode with POWER OFF.(To return from this mode shall become possibleonly by POWER Key as in the case of the Mechan-ical Malfunction).* However the POWER SAFETY 1 function shall bedisabled during 500 msec. right after the MONI-TOR turns ON.
2) POWER SAFETY 2If P-SAFETY 2 port becomes continuously 2.5V orless for 120 msec. (4 times 40 msec. interval) whenP-ON-H port is ON, the unit shall be assumed to bethe Power Malfunction 2 and immediately turn OFFthe POWER/MONITOR and switch over theMechanical Malfunction mode with POWER OFF.(To return from this mode shall become possibleonly by POWER Key as in the case of the Mechan-ical Malfunction).* However the POWER SAFETY 2 function shall bedisabled during 500 msec. right after the P-ON-Hport turns ON.
Immediately preceding Malfunction Display character
REEL Malfunction RDRUM Malfunction DCASSETTE LOADING Mal-function C
TAPE LOADING Malfunction TP-SAFETY 1 1P-SAFETY 2 2X-RAY X
EJECT R
1-7-8 T6550MTI
Mechanical Malfunction determination1) REEL Malfunction detection
Countermeasure for REEL and CAPSTAN motorrotation malfunction (Except CASSETTE LOAD-ING function)After the Malfunction detection with REEL/CAP-STAN sensor, the unit shall switch over to STOP(B) and be REEL Mechanical Malfunction.
a) If the T-REEL pulse is not impressed after a lapseof 7 sec. at SP, 14 sec. at LP, or more in the REELRotation Mode like PLAY/REC, FS/RS Mode, andthe T-REEL or S-REEL pulse is not impress after alapse of 4 sec. or more in REEL Rotation Mode ofFF/REW, it shall be assumed to stop the rotationand switch over to STOP (B) position, thenPOWER be turned OFF and the unit be REELMechanical Malfunction. (T-REEL and S-REEL forthe models on S-REEL and only T-REEL for othermodels)
b) If the C-FG pulse is not impressed for a lapse of 1sec. or more during the CAPSTAN MOTOR rota-tion, it shall be MOTOR Rotation Malfunction(REEL Malfunction).
2) DRUM Malfunction detectionDetect the DRUM rotation at the D-FG input termi-nal. If the variation of D-FG input level is not detectedfor a lapse of 1 sec. or more when D-CONT is "H",it shall be assumed to be Rotation Malfunction andbe DRUM Malfunction. When detect Drum Malfunction, POWER shall beturned OFF after the unit switches over to STOP(B) Mode.
3) Countermeasure for TAPE LOADING MalfunctionDetect the Malfunction with the LOADING Switch.
a) TAPE LOADING MalfunctionIf LD-SW does not go to the established positionafter a lapse of 7 sec. or more from TAPE LOAD-ING or TAPE UNLOADING start, the LOADINGfunction shall immediately be stopped and POWERbe turned OFF, and inform the Timer about theLOADING Mechanical Malfunction.
b) LD-SW Position Malfunction at each modeWhen the unit operates at each mode, even if theLD-SW position changes from the established onein its mode, it keeps the function according to itsmode.
4) Countermeasure for CASSETTE LOADING Mal-function
a) CASSETTE IN operating MalfunctionIf LD-SW does not go to SB position after a lapseof 5 sec. or more from the CASSETTE insertionstart, the unit starts the CASSETTE OUT opera-tion. After switch over to CASSETTE OUT operation andthen a laps of 5 sec. or more from the CASSETTEOUT operation start, if LD-SW does not go to theEJ position or if START Sensor and END Sensordoes not turn "ON" at the EJ position, the unitstarts again to insert CASSETTE.(However in S-INH state, the START/END Sensorshall be disabled).
b) CASSETTE OUT operating MalfunctionAfter a lapse of 5 sec. or more from CASSETTEOUT operation start, if LD-SW does not go to theEJ position or if START Sensor and END Sensordoes not turn "ON" at the EJ position, the unitstarts to insert CASSETTE.(However in S-INH state, the START/END Sensorshall be disabled).
When the unit switches over to CASSETTE inser-tion at CASSETTE IN or CASSETTE OUT Mal-function, if LD-SW does not go to the SB positionafter a lapse of 5 sec. or more from CASSETTEinsertion start, the function shall immediately bestopped and POWER be turned OFF, and the unitbe CASSETTE LOADING Malfunction.
c) When POWER is turned ON, if the CL position orGC position cannot be detected after 5 sec. LD-REV operation and 5 sec. LD-FWD operation, thefunction shall immediately be stopped and POWERbe turned OFF, and the unit be CASSETTE LOAD-ING Malfunction.
d) When POWER is turned ON without CASSETTE(EJ position) and LD-SW is monitored all the time,if the CL or GC position is detected continuously for1 sec. or more, the POWER shall be turned OFFand the unit be CASSETTE LOADING Malfunction.
Countermeasure for MechanicalMalfunctionIf the unit detects Mechanical Malfunction, turn thePOWER OFF. If the unit is Mechanical Malfunction,Key input except POWER key shall be disabled andCASSETTE insertion disabled. When POWER Key isentered, the POWER is turned ON and the unitswitches over the EJECT Mode. (Return with POWERON)
1-8-1 SC_1
(Top View) (Bottom View)
(Bottom View)
Electrolytic Capacitor+
Transistor or Digital Transistor
NPN Transistor PNP Transistor
NPN Digital Transistor PNP DigitalTransistor
(Top View)
(Top View)E C B
E C B
Digital Transistor
CBA Symbols
Schematic Diagram Symbols
E C B
(Top View)
(Top View)E C B
E C B
SCHEMATIC DIAGRAMS / CBAS AND TEST POINTSStandard NotesWarningMany electrical and mechanical parts in this chassishave special characteristics. These characteristicsoften pass unnoticed and the protection afforded bythem cannot necessarily be obtained by using replace-ment components rated for higher voltage, wattage,etc. Replacement parts that have these special safetycharacteristics are identified in this manual and itssupplements; electrical components having such fea-tures are identified by the mark " ! " in the schematicdiagram and the parts list. Before replacing any ofthese components, read the parts list in this manualcarefully. The use of substitute replacement parts thatdo not have the same safety characteristics as speci-fied in the parts list may create shock, fire, or otherhazards.
Capacitor Temperature Markings
Capacitors and transistors are represented by the fol-lowing symbols.
Note:1. Do not use the part number shown on these draw-
ings for ordering. The correct part number is shownin the parts list, and may be slightly different oramended since these drawings were prepared.
2. All resistance values are indicated in ohms (K=103,M=106).
3. Resistor wattages are 1/4W or 1/6W unless other-wise specified.
4. All capacitance values are indicated in F (P=10-6F).
5. All voltages are DC voltages unless otherwisespecified.
Mark Capacity change rateStandard
temperatureTemperature
range(B) 10% 20C -25~+85C(F) +30 -80% 20C -25~+85C
(SR) 15% 20C -25~+85C(Z) +30 -80% 20C -10~+70C
1-8-2 SC_2
LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ONTHE FOLLOWING PAGES:
1. CAUTION:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE.
2. CAUTION: Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit.If Main Fuse (F601) is blown, first check to see that all components in the power supply circuit are not defectivebefore you connect the AC plug to the AC power supply. Otherwise it may cause some components in thepower supply circuit to fail.
3. Note:(1) Do not use the part number shown on the drawings for ordering. The correct part number is shown in the parts
list, and may be slightly different or amended since the drawings were prepared.(2) To maintain original function and reliability of repaired units, use only original replacement parts which are listed
with their part numbers in the parts list section of the service manual.
4. Wire Connectors(1) Prefix symbol "CN" means "connector" (can disconnect and reconnect).(2) Prefix symbol "CL" means "wire-solder holes of the PCB" (wire is soldered directly).
5. Mode: SP/REC
6. Voltage indications for PLAY and REC modes on the schematics are as shown below:
7. How to read converged lines
8. Test Point Information
2 31 5.0(2.5)
PLAY mode REC mode5.0
The same voltage forboth PLAY & REC modes Indicates that the voltageis not consistent here.
Unit: Volts
3
2
1
A B C D
1-B1
1-D3
AREA D3AREA B1
1-D3Distinction AreaLine Number(1 to 3 digits)Examples:
1. "1-D3" means that line number "1" goes to area "D3".2. "1-B1" means that line number "1" goes to area "B1".
: Indicates a test point with a jumper wire across a hole in the PCB.: Used to indicate a test point with a component lead on foil side.: Used to indicate a test point with no test pin.: Used to indicate a test point with a test pin.
Main 1/5 Schematic Diagram
1-8-3 1-8-4 T6605SCM1
Main 2/5 Schematic Diagram
1-8-5 1-8-6 T6605SCM2
Main 3/5 Schematic Diagram
1-8-7 1-8-8 T6605SCM3
Comparison Chart of Models and Marks
MODEL MARKT6605VF AT6705VF B
Main 4/5 Schematic Diagram
1-8-9 1-8-10 T6605SCM4
Comparison Chart of Models and Marks
MODEL MARKT6605VF AT6705VF B
1-8-11 1-8-12 T6605SCM5
Main 5/5 Schematic DiagramComparison Chart of Models and Marks
MODEL MARKT6605VF AT6705VF B
1-8-13 1-8-14 T6605SCP1
H.V./Power Supply 1/2 Schematic Diagram
NOTE :The voltage for parts in hot circuit is measuredusing hot GND as a common terminal.
CAUTION !Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.If Main Fuse (F601) is blown, check to see that all components in the power supplycircuit are not defective before you connect the AC plug to the AC power supply.Otherwise it may cause some components in the power supply circuit to fail.
CAUTIONFOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE ONLY WITH THE SAME TYPE FUSE.
VOLTAGE CHART (Power off mode)Ref. No.IC601
Ref. No.Q602
Ref. No.Q603Q604Q605Q606Q607Q608
13.1 12.1 0.2 1.61 2 3 4
1.20
5.50.1 0.7
12.010.39.7
9.66.5
7.36.710.35.91.2
E C B0 0.21.8
S D G1.80 304.0
Comparison Chart of Models and Marks
MODEL MARKT6605VF AT6705VF B
1-8-15 1-8-16
H.V./Power Supply 2/2 Schematic Diagram
T6605SCP2
Comparison Chart of Models and Marks
MODEL MARKT6605VF AT6705VF B
1-8-17 1-8-18 T6605SCCRT
CRT Schematic DiagramComparison Chart of Models and Marks
MODEL MARKT6605VF AT6705VF B
TO SENSOR CBA(END-SENSOR)
TO SENSOR CBA(START-SENSOR)
CTLTP001
RF-SWTP002
WF3
WF1
N-A-PBTP007WF8
J361G4(SECAM Black LevelAdjustment)
C-PBTP008WF6
V-OUTTP003WF5
J349F3(C-Trap Adjustment)
1-8-19 1-8-20 BT6600F01012
Main CBA Top View
BHF300F01011-A
BHF300F01011-B
Sensor CBA Top View
PIN 52OF IC301
WF7
PIN 13OF IC301
WF10
PIN 8OF IC401
WF9
PIN 58OF IC201
WF17
PIN 29OF IC401
PIN 59OF IC201
WF18
PIN 7OF IC301
WF11
WF2PIN 48OF IC401
WF4
Main CBA Bottom View
1-8-21 1-8-22 BT6600F01012
(H Adjustment)R590
+BTP503
GNDTP504
+B ADJVR601
H.V./Power Supply CBA Top ViewBECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWERSUPPLY CIRCUIT, AN ISOLATION TRANSFORMER MUST BE USED.ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUTSLOWLY, WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLYCIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
NOTE :The voltage for parts in hot circuit is measuredusing hot GND as a common terminal.
CAUTION !Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.If Main Fuse (F601) is blown, check to see that all components in the power supplycircuit are not defective before you connect the AC plug to the AC power supply.Otherwise it may cause some components in the power supply circuit to fail.
CAUTIONFOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE ONLY WITH THE SAME TYPE FUSE.
1-8-23 1-8-24 BT6600F01022-A
WF13PIN 5OF CN551
WF12Q551Collector
H.V./Power Supply CBA Bottom ViewBECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWERSUPPLY CIRCUIT, AN ISOLATION TRANSFORMER MUST BE USED.ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUTSLOWLY, WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLYCIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
NOTE :The voltage for parts in hot circuit is measuredusing hot GND as a common terminal.
CAUTION !Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.If Main Fuse (F601) is blown, check to see that all components in the power supplycircuit are not defective before you connect the AC plug to the AC power supply.Otherwise it may cause some components in the power supply circuit to fail.
CAUTIONFOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE ONLY WITH THE SAME TYPE FUSE.
1-8-25 1-8-26 BT6600F01022-A
WF14Q501Collector
WF15Q502Collector
WF16Q503Collector
BT6600F01022-B
CRT CBA Top View CRT CBA Bottom View
1-8-27 1-8-28
Junction-A CBA Top View
BT6600F01012
Junction-A CBA Bottom View
Junction-B CBA Top View Junction-B CBA Bottom View
Junction-C CBA Top View Junction-C CBA Bottom View
1-8-29 1-8-30
1-9-1
WAVEFORMS
Z13PWF
WA
VEFO
RM N
OTE
SIN
PUT:
CO
LOR
BAR
SIG
NAL
OTH
ER C
ONT
ROLS
: CEN
TER
POSI
TIO
NVO
LTAG
ES S
HOW
N AR
E RA
NGE
OF
OSC
ILLO
SCO
PE S
ETTI
NG
WF1
1DIV
: 2V
5
ms
TP00
2 RF
-SW
WF2
1DIV
: 0.2
V 0
.1s
IC40
1 PI
N 29
WF3
1DIV
: 1V
1
0ms
TP00
1 C
TL
WF4
1DIV
: 0.2
5V
20s
IC40
1 PI
N 48
WF5
1DIV
: 0.5
V
20s
TP00
3 V
-OUT
Uppe
r: W
F6 L
ower
: WF1
1DIV
: 0.2
V 2
DIV:
5V
5m
sTP
008
C-P
B
WF7
1DIV
: 0.2
V 0
.5m
sIC
301
PIN
52
WF8
1DIV
: 0.5
V 0
.5m
sTP
007
N-A-
PB
WF9
1DIV
: 0.5
V 0
.5m
sIC
401
PIN
8
WF1
01D
IV: 2
V
5m
sIC
301
PIN
13
WF1
11D
IV: 1
V
20
sIC
301
PIN7
WF1
21D
IV: 2
00V
20
sQ5
51 C
OLLE
CTOR
WF1
31D
IV: 1
0V
5m
sCN
551
PIN
5
WF1
41D
IV: 2
0V
20
sQ5
01 C
OLLE
CTOR
WF1
51D
IV: 2
0V
20
sQ5
02 C
OLLE
CTOR
WF1
61D
IV: 2
0V
20
sQ5
03 C
OLLE
CTOR
WF1
71D
IV: 1
V
20
sIC
201
PIN
58
WF1
81D
IV: 1
V
5m
sIC
201
PIN
59
T6605WI1-10-1
WIRING DIAGRAM
FULL
ERA
SE H
EAD
WIR
ING
DIA
GR
AM
FO
R SE
CTIO
N 2
(DEC
K ME
CHAN
ISM)
CRT
CBA
BT6
600F
0102
2-B
FOCU
SSC
REEN
GND
D.