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SERVICE MANUAL
32″ COLOR LCD TELEVISION
LT5-M32BB
32″ COLOR LCD TELEVISION
LT5-M32BB
TABLE OF CONTENTSSpecifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Important Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Cabinet Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1How to Initialize the LCD Television. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Electrical Adjustment Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1Schematic Diagrams / CBA’s and Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1Electrical Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1
The LCD panel is manufactured to provide many years of useful life.Occasionally a few non active pixels may appear as a tiny spec of color.This is not to be considered a defect in the LCD screen.
1-1 A73F2SP
SPECIFICATIONS
< TUNER >VHS/UHF Input ----------- 75Ω Unbal., IEC ConnectorIntermediate Freq. ------- Digital 36.167MHz, SECAM-L 38.9MHz, SECAM-L’ 33.9MHz, PAL BG/DK 38.9MHz
< LCD PANEL >
*1: modulation parameters = [8k 64QAM CR=2/3 GI=1/32]*2: modulation parameters = [2k 64QAM CR=2/3 GI=1/32]*3: modulation parameters = [2k 16QAM CR=3/4 GI=1/32]
< VIDEO >
Description Condition Unit Nominal Limit
1. Video S/N 80 dB --- 40
2. Audio S/N --- dB --- 40/40
Description Condition Unit Nominal Limit
1. Number of Pixels HorizontalVerticalpixelspixels
1366× 3768
------
2. Viewing Angle HorizontalVertical°°
-85 to 85-85 to 85
------
Description Condition Unit Nominal Limit
1. RECEIVED FREQ.RANGE (-60dBm, 45ch.) *1
+-
kHzkHz
1000900
500167
2. INPUT DYNAMIC RANGE (mix./max) *1
VHF HIGH 7ch.UHF 45ch.
dBmdBm
-82.5/2-81.1/2
-79.9/-10-79.3/-10
3. C/N PERFORMANCE *1
VHF HIGH 7ch.UHF 45ch.
dBdB
1515
17.917.9
4. MULTIPATH a. Performance with
short delay echoes b. Performance with
long delay echoes c. C/N Performance on
0dB echo channel (14µs)
UHF 45ch.:*2:*3:*2:*3:*1
dBdBdBdBdB
18.714.019.113.020.7
≦22.2≦19.5≦22.2≦18.0≦24.0
5. Audio S/N (0dBfs) LchRchdBdB
------
4040
6. Audio DIST. (0dBfs) LchRch%%
------
1010
Description Condition Unit Nominal Limit
1. Over Scan HorizontalVertical%%
55
------
2. Color TemperatureAT 70% WHITE FIELD
xy
°K 120000.2720.278
---±0.03±0.03
3. Resolution HorizontalVerticallineline
400350
------
4. Brightness AT 100% WHITE FIELD BRT/CNT MAX cd/m2 450 ---
1-2 A73F2SP
< AUDIO >All items are measured across 8 Ω load 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 absolute worst condition that still might be considered acceptable. In no case should a unit fail to meet limit specifications.
Description Condition Unit Nominal Limit
1. Audio Output Power 10% THD: Lch/Rch W 5.0/5.0 4.5/4.5
2. Audio Distortion 500mW: Lch/Rch % 1.0/1.0 4.0/4.0
3. Audio Freq. Response -6dB: Lch-6dB: RchHzHz
100 to 12 k100 to 12 k
------
4. Audio S/N VIDEO 1 dB --- >45/45
2-1 LTVP_ISP
IMPORTANT SAFETY PRECAUTIONSPrior to shipment from the factory, our products are strictly inspected for recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.
Safety Precautions for LCD TV Circuit1. Before returning an instrument to the
customer, always make a safety check of the entire instrument, including, but not limited to, the following items:
a. Be sure that no built-in protective devices are defective and have been defeated during servicing. (1) Protective shields are provided on this chassis to protect both the technician and the customer. Correctly replace all missing protective shields, including any removed for servicing convenience. (2) When reinstalling the chassis and/or other assembly in the cabinet, be sure to put back in place all protective devices, including but not limited to, nonmetallic control knobs, insulating fishpapers, adjustment and compartment covers/shields, and isolation resistor/capacitor networks. Do not operate this instrument or permit it to be operated without all protective devices correctly installed and functioning. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damage.
b. Be sure that there are no cabinet openings through which an adult or child might be able to insert their fingers and contact a hazardous voltage. Such openings include, but are not limited to, (1) spacing between the LCD module and the cabinet mask, (2) excessively wide cabinet ventilation slots, and (3) an improperly fitted and/or incorrectly secured cabinet back cover.
c. Antenna Cold Check - With the instrument AC plug removed from any AC source, connect an electrical 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 plug prongs tied together and touch the other ohmmeter lead in turn to each tuner antenna input exposed terminal screw and, if applicable, to the coaxial connector. If the measured resistance is less than 1.0 megohm or greater than 5.2 megohm, an abnormality exists that must be corrected before the instrument is returned to the customer. Repeat this test with the instrument AC switch in the off position.
d. Leakage Current Hot Check - With the instrument completely reassembled, plug the AC line cord directly into a 230 V AC outlet. (Do not use an isolation transformer during this test.) Use a leakage current tester or a metering system that complies with American
National Standards Institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laboratories (UL) 1410, (50.7). With the instrument AC switch first in the on position and then in the off position, measure from a known earth ground (metal water pipe, conduit, etc.) to all exposed metal parts of the instrument (antennas, handle brackets, metal cabinet, screw heads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5 milli-ampere. Reverse the instrument power cord plug in the outlet and repeat the test.
ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER OR BEFORE CONNECTING THE ANTENNA OR ACCESSORIES.
2. Read and comply with all caution and safety-related notes on or inside the receiver cabinet, on the receiver chassis, or on the LCD module.
3. Design Alteration Warning - Do not alter or add to the mechanical or electrical design of this LCD TV receiver. Design alterations and additions, including, but not limited to circuit modifications and the addition of items such as auxiliary audio and/or video output connections, might alter the safety characteristics of this receiver and create a hazard to the user. Any design alterations or additions will void the manufacturer's warranty and may make you, the servicer, responsible for personal injury or property damage resulting therefrom.
ALSO TEST WITHPLUG REVERSEDUSING ACADAPTER PLUGAS REQUIRED
TEST ALL EXPOSEDMETAL SURFACES
READING SHOULD NOT BE ABOVE 0.5 mA
EARTHGROUND
_
DEVICELEAKAGECURRENT
TESTER
+BEINGTESTED
2-2 LTVP_ISP
4. Hot Chassis Warning -
a. Some TV receiver chassis are electrically connected directly to one conductor of the AC power cord and maybe safety-serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power source. To confirm that the AC power plug is inserted correctly, with an AC voltmeter, measure between the chassis and a known earth ground. If a voltage reading in excess of 1.0 V is obtained, remove and reinsert the AC power plug in the opposite polarity and again measure the voltage potential between the chassis and a known earth ground.
b. Some TV receiver chassis normally have 85V AC(RMS) between chassis and earth ground regardless of the AC plug polarity. This chassis can be safety-serviced only with an isolation transformer inserted in the power line between the receiver and the AC power source, for both personnel and test equipment protection.
c. Some TV receiver chassis have a secondary ground system in addition to the main chassis ground. This secondary ground system is not isolated from the AC power line. The two ground systems are electrically separated by insulation material that must not be defeated or altered.
5. Observe original lead dress. Take extra care to assure correct lead dress in the following areas: a. near sharp edges, b. near thermally hot parts-be sure that leads and components do not touch thermally hot parts, c. the AC supply, d. high voltage, and, e. antenna wiring. Always inspect in all areas for pinched, out of place, or frayed wiring. Check AC power cord for damage.
6. Components, parts, and/or wiring that appear to have overheated or are otherwise damaged should be replaced with components, parts, or wiring that meet original specifications. Additionally, determine the cause of overheating and/or damage and, if necessary, take corrective action to remove any potential safety hazard.
7. Product Safety Notice - Some electrical and mechanical parts have special safety-related characteristics which are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage, wattage, etc.. Parts that have special safety characteristics are identified by a ! on schematics and in parts lists. Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire, and/or other hazards. The product's safety is under review continuously and new instructions are issued whenever appropriate. Prior to shipment from the factory, our products are strictly inspected to confirm they comply with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.
2-3 LTVP_ISP
Precautions during ServicingA. Parts identified by the ! symbol are critical for
safety.Replace only with part number specified.
B. In addition to safety, other parts and assemblies are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements.Examples: RF converters, RF cables, noise blocking 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 of wires securely about the terminals before soldering.
F. Observe that the wires do not contact heat producing parts (heat sinks, oxide metal film resistors, fusible resistors, etc.)
G. Check that replaced wires do not contact sharp edged or pointed parts.
H. When a power cord has been replaced, check that 5~6 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 droplets, etc.) do not remain inside the set.
K. When connecting or disconnecting the internal connectors, first, disconnect the AC plug from the AC supply outlet.
L. When installing parts or assembling the cabinet parts, be sure to use the proper screws and tighten certainly.
2-4 LTVP_ISP
Safety Check after ServicingExamine the area surrounding the repaired locationfor damage or deterioration. Observe that screws,parts and wires have been returned to original posi-tions. Afterwards, perform the following tests and con-firm the specified values in order to verify compliancewith safety 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’)
Fig. 1
Chassis or Secondary Conductor
Primary Circuit
d' d
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
2kΩ RES. Connected in
parallel
i≤0.7mA AC Peaki≤2mA DC
RF orAntenna terminals
50kΩ RES. Connected in
parallel
i≤0.7mA AC Peaki≤2mA DC A/V Input, Output
3-1 TVP_SN
STANDARD NOTES FOR SERVICING
Circuit Board Indications1. The output pin of the 3 pin Regulator ICs is
indicated as shown.
2. For other ICs, pin 1 and every fifth pin are indicated as shown.
3. The 1st pin of every male connector is indicated as shown.
Pb (Lead) Free SolderPb free mark will be found on PCBs which use Pb free solder. (Refer to figure.) For PCBs with Pb free mark, be sure to use Pb free solder. For PCBs without Pb free mark, use standard solder.
How to Remove / Install Flat Pack-IC
1. RemovalWith Hot-Air Flat Pack-IC Desoldering Machine:
1. Prepare the hot-air flat pack-IC desoldering machine, then apply hot air to the Flat Pack-IC (about 5 to 6 seconds). (Fig. S-1-1)
2. Remove the flat pack-IC with tweezers while applying the hot air.
3. Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)
4. Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6)
CAUTION:1. The Flat Pack-IC shape may differ by models. Use
an appropriate hot-air flat pack-IC desoldering machine, whose shape matches that of the Flat Pack-IC.
2. Do not supply hot air to the chip parts around the flat pack-IC for over 6 seconds because damage to the chip parts may occur. Put masking tape around the flat pack-IC to protect other parts from damage. (Fig. S-1-2)
3. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or the solder lands under the IC when removing it.
Top View
Out In
Bottom ViewInput
5
10
Pin 1
Pin 1
Pb free mark
Fig. S-1-1
Hot-airFlat Pack-ICDesolderingMachine
CBA
Flat Pack-IC
Tweezers
Masking Tape
Fig. S-1-2
3-2 TVP_SN
With Soldering Iron:
1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3)
2. Lift each lead of the flat pack-IC upward one by one, using a sharp pin or wire to which solder will not adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air desoldering machine. (Fig. S-1-4)
3. Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)
4. Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6)
With Iron Wire:
1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3)
2. Affix the wire to a workbench or solid mounting point, as shown in Fig. S-1-5.
3. While heating the pins using a fine tip soldering iron or hot air blower, pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pads as shown in Fig. S-1-5.
4. Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)
5. Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6)
Note: When using a soldering iron, care must be taken to ensure that the flat pack-IC is not being held by glue. When the flat pack-IC is removed from the CBA, handle it gently because it may be damaged if force is applied.
Flat Pack-IC Desoldering Braid
Soldering Iron
Fig. S-1-3
Fine TipSoldering Iron
SharpPin
Fig. S-1-4
To Solid Mounting Point
Soldering Iron
Iron Wire
or
Hot Air Blower
Fig. S-1-5
Fine TipSoldering IronCBA
Flat Pack-ICTweezers
Fig. S-1-6
3-3 TVP_SN
2. Installation1. 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-IC more easily.
2. The “●” mark on the flat pack-IC indicates pin 1. (See Fig. S-1-7.) Be sure this mark matches the 1 on the PCB when positioning for installation. Then presolder the four corners of the flat pack-IC. (See Fig. S-1-8.)
3. Solder all pins of the flat pack-IC. Be sure that none of the pins have solder bridges.
Instructions for Handling Semi-conductorsElectrostatic breakdown of the semi-conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work.
1. Ground for Human Body
Be sure to wear a grounding band (1 MΩ) that is properly grounded to remove any static electricity that may be charged on the body.
2. Ground for Workbench
Be sure to place a conductive sheet or copper plate with proper grounding (1 MΩ) on the workbench or other surface, where the semi-conductors are to be placed. Because the static electricity charge on clothing will not escape through the body grounding band, be careful to avoid contacting semi-conductors with your clothing.
Example :
Pin 1 of the Flat Pack-ICis indicated by a " " mark. Fig. S-1-7
Presolder
CBA
Flat Pack-IC
Fig. S-1-8
CBA
Grounding Band
Conductive Sheet orCopper Plate
1MΩ
1MΩ
CBA
4-1 A73F2DC
CABINET DISASSEMBLY INSTRUCTIONS
1. Disassembly FlowchartThis flowchart indicates the disassembly steps for the cabinet parts, and the CBA in order to gain access to item(s) to be serviced. When reassembling, follow the steps in reverse order. Bend, route and dress the cables as they were.
2. Disassembly Method
Note:
(1) Order of steps in procedure. When reassembling, follow the steps in reverse order. These numbers are also used as the Identification (location) No. of parts in figures.
(2) Parts to be removed or installed.
(3) Fig. No. showing procedure of part location
(4) Identification of parts to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered. N = Nut, L = Locking Tab, S = Screw, CN = Connector* = Unhook, Unlock, Release, Unplug, or Desoldere.g. 2(S-2) = two Screws (S-2), 2(L-2) = two Locking Tabs (L-2)
(5) Refer to the following "Reference Notes in the Table."
Step/Loc. No.
Part
Removal
Fig. No.
Remove/*Unhook/Unlock/Release/Unplug/Unclamp/
Desolder
Note
[1] Stand Base Plate D1 4(S-1), 4(S-2), 5(S-3) ---
[2] Stand Hinge D1 --------------- ---
[3] Stand Cover D1 --------------- ---
[4] Rear Cabinet D1 10(S-4), 4(S-5) ---
[5] Function CBAD1D5 3(S-6), *CN3501 ---
[6] Chassis Bracket D2 8(S-7) ---
[7]Power Supply CBA
D2D5
4(S-8), *CN501, *CN701, *CN702, *CN4501, *CN4502, *CN4503, *CN4504, *CLN51B
---
[8] Jack Holder(D) D2(S-9), (S-10), 2(S-11), 2(S-12) ---
[9] Shield Plate D2 2(S-13) ---
[2] Stand Hinge[13] Jack Holder(A)
[20] IR SensorCBA
[5] Function CBA
[3] Stand Cover[14] Jack CBA
[7] Power Supply CBA
[18] T-CON CBA
[1] Stand Base Plate
[4] Rear Cabinet
[6] Chassis Bracket
[15] Inverter CBA
[16] Junction CBA
[10] Shield Box Top
[9] Shield Plate
[17] Panel Holder
[22] Front Cabinet
[12] DVB-T Module CBA Unit
[11] Digital Main CBA Unit
[19] LCD Module Assembly
[8] Jack Holder(D)
[21] Speaker(s)
[10] Shield Box Top D24(S-14), *CN3302, *CN3802 ---
[11] Digital Main CBA UnitD2D5 *CN4104, *CN4105 ---
[12]DVB-T Module CBA Unit
D2D5
2(S-15), 4(S-16), Shield Box Bottom ---
[13] Jack Holder(A) D3 (S-17) ---
[14] Jack CBA D3D5 7(S-18) ---
[15] Inverter CBAD3D5
7(S-19), *CN1050, *CN1100, *CN1150, *CN1200, *CN1250, *CN1300
---
[16] Junction CBAD3D5 Desolder ---
[17] Panel Holder D3 8(S-20), 2(S-21) ---
[18] T-CON CBAD4D5
6(S-22), Shield Plate, *CN9001, *CN9002, *CN9005
---
[19]LCD Module Assembly
D4 6(S-23) ---
[20] IR Sensor CBAD4D5
2(S-24) *CN801, *CN802 ---
[21] Speaker(s) D4 8(S-25) ---
[22] Front Cabinet D4 --------------- ---
↓(1)
↓(2)
↓(3)
↓(4)
↓(5)
Step/Loc. No.
Part
Removal
Fig. No.
Remove/*Unhook/Unlock/Release/Unplug/Unclamp/
Desolder
Note
4-2 A73F2DC
[4] Rear Cabinet
[3] Stand Cover
[2] Stand Hinge
[1] Stand Base Plate
(S-2) (S-3) (S-2)
(S-3)
[5] Function CBA
(S-1)
(S-4)
(S-4)
(S-4)
(S-5)
(S-4)
(S-6)
(S-5)
Fig. D1
4-3 A73F2DC
[8] Jack Holder(D)
[10] Shield Box Top
[11] Digital MainCBA Unit
[6] Chassis Bracket
(S-8)
(S-15) (S-13)
(S-14)
(S-7)
(S-7)
(S-7)
[7] Power Supply CBA
(S-8)
(S-9)(S-10)
(S-11)(S-12)
(S-8)
[12] DVB-T Module CBA UnitShield BoxBottom
(S-16)
[9] Shield Plate
(S-7)
Fig. D2
4-4 A73F2DC
[15] Inverter CBA
[13] Jack Holder (A)
(S-17)
(S-19)
(S-19)
(S-18)
[14] Jack CBA
[17] Panel Holder
(S-20)
(S-20)
(S-21)
(S-20)
(S-21)
(S-20)
[16] Junction CBA
Desolder
(S-19)
(S-19)
(S-19)
(S-18)
Fig. D3
4-5 A73F2DC
[19] LCD Module Assembly[21] Speaker
[22] Front Cabinet
(S-23)
(S-22)
(S-22)
(S-22)
(S-23)
(S-25)
(S-25)
[21] Speaker
[20] IR SensorCBA
(S-25)
(S-25)
(S-24)
[18] T-CON CBA
Shield Plate
Fig. D4
4-6 A73F2DC
TV Cable Wiring Diagram
CN4501 CN4502 CN4503CN4504
Function CBA
Power SupplyCBA
Digital MainCBA Unit
Fig. D5
CN3802
Inverter CBA
To LCD ModuleAssembly
Jack CBA
IR Sensor CBA
CN3501
CN3302
CL552B
CN552
JunctionCBA
T-CON CBA
CN9002 CN9001
CN9003
To LCD ModuleAssembly
CN9005
To Speaker
CN701
CN702
CLN51A
CN601
CN301 CN302 CN303 CN304
CL552A
CN501
CN102
CLN51BCN801
CN802
CN7001
CN7003
CN1050
CN1100
CN1150
CN1200
CN1250
CN1300
J2
J1 J5
DVB-T Module CBA Unit
CN4105CN4104
5-1 A73F2INT
HOW TO INITIALIZE THE LCD TELEVISION
How to initialize the LCD television:1. Turn the power off.
2. To enter the service mode, while pressing [MENU] button, press [STANDBY-ON] button on the TV unit.
- To cancel the service mode, press [STANDBY-ON] button on the remote control.
3. Press [ ] button on the remote control unit to initialize the LCD television.
4. Confirm "FF" indication on the upper left of the screen.
6-1 A73F2EA
ELECTRICAL ADJUSTMENT INSTRUCTIONSGeneral Note: “CBA” is abbreviation for “Circuit Board Assem-bly.”NOTE:
Electrical adjustments are required after replacing circuit components and certain mechanical parts. It is important to perform these adjustments only after all repairs and replacements have been completed. Also, do not attempt these adjustments unless the proper equipment is available.
Test Equipment Required1. DC Voltmeter
2. Pattern Generator
3. Color Analyzer
How to Set up the Service mode:1. Turn the power off.
2. While pressing [MENU] button, press [STANDBY-ON] button on the TV unit
- To cancel the service mode, press [STANDBY-ON] button on the TV unit.
1. Initial SettingGeneralEnter the Service mode.
Set the each initial data as shown on table 1 below.
Table 1: Initial Data
ITEMBUTTON
(on the remote control)
DATA VALUE
PAL SECAM RF
BRT
[MENU(PAL SECAM NTSC)] → [1]
124CNT 175CLR-R 140CLR-B 140SHR 112
PAL SECAM NTSC CVBS
BRT
[MENU(PAL SECAM NTSC)] → [2]
125CNT 180CLR-R 125CLR-B 125TNT 128SHR 143
PAL SECAM NTSC YC
BRT
[MENU(PAL SECAM NTSC)] → [3]
123CNT 200CLR-R 115CLR-B 115TNT 128SHR 125
PAL SECAM NTSC RGB
BRT
[MENU(PAL SECAM NTSC)] → [4]
132CNT 150CLR-R 200CLR-B 200TNT 128SHR 125
YUV D1
BRT
[MENU(YUV)] → [1]
125CNT 120CLR-R 130CLR-B 130TNT 128SHR 112
YUV D2
BRT
[MENU(YUV)] → [2]
125CNT 120CLR-R 150CLR-B 150TNT 128SHR 125
YUV D3
BRT
[MENU(YUV)] → [3]
122CNT 125CLR-R 155CLR-B 155TNT 128SHR 112
6-2 A73F2EA
YUV D4
BRT
[MENU(YUV)] → [4]
123CNT 125CLR-R 150CLR-B 150TNT 128SHR 130
HDMI D1
BRT
[MENU(HDMI)] → [1]
125CNT 130CLR-R 145CLR-B 145TNT 128SHR 125
HDMI D2
BRT
[MENU(HDMI)] → [2]
126CNT 130CLR-R 160CLR-B 160TNT 128SHR 128
HDMI D3
BRT
[MENU(HDMI)] → [3]
121CNT 130CLR-R 155CLR-B 155TNT 120SHR 128
HDMI D4
BRT
[MENU(HDMI)] → [4]
121CNT 130CLR-R 145CLR-B 145TNT 128SHR 128
HDMI VGA
BRT
[MENU(HDMI)] → [5]
128CNT 128CLR-R 138CLR-B 138TNT 128SHR 112
PCBRT [MENU(PC DVB-T)]
→ [1]122
CNT 128
DVB-T
BRT
[MENU(PC DVB-T)] → [2]
142CNT 130CLR-R 160CLR-B 160SHR 112
BRIGHT [0] 255NORMAL [0] 176DARK [0] 112LAST POWER [ -] ONCOR(C/D/S 1) [ -] → [1] 128COG(C/D/S 1) [ -] → [2] 128COB(C/D/S 1) [ -] → [3] 128DR(C/D/S 1) [ -] → [4] 128
ITEMBUTTON
(on the remote control)
DATA VALUE
DG(C/D/S 1) [ -] → [5] 128DB(C/D/S 1) [ -] → [6] 128SBR(C/D/S 1) [ -] → [7] 63SBB(C/D/S 1) [ -] → [9] 63COR(C/D/S 2) [ -] → [1] 128COG(C/D/S 2) [ -] → [2] 128COB(C/D/S 2) [ -] → [3] 128DR(C/D/S 2) [ -] → [4] 128DG(C/D/S 2) [ -] → [5] 128DB(C/D/S 2) [ -] → [6] 128SBR(C/D/S 2) [ -] → [7] 63SBB(C/D/S 2) [ -] → [9] 63COR(C/D/S 3) [ -] → [1] 128COG(C/D/S 3) [ -] → [2] 128COB(C/D/S 3) [ -] → [3] 128DR(C/D/S 3) [ -] → [4] 128DG(C/D/S 3) [ -] → [5] 128DB(C/D/S 3) [ -] → [6] 128SBR(C/D/S 3) [ -] → [7] 63SBB(C/D/S 3) [ -] → [9] 63COR(C/D/S 4) [ -] → [1] 121COG(C/D/S 4) [ -] → [2] 128COB(C/D/S 4) [ -] → [3] 130DR(C/D/S 4) [ -] → [4] 134DG(C/D/S 4) [ -] → [5] 128DB(C/D/S 4) [ -] → [6] 112
ITEMBUTTON
(on the remote control)
DATA VALUE
6-3 A73F2EA
2. Purity Check ModeThis mode cycles through full-screen displays of red, green, blue, and white to check for non-active pixels.
1. Enter the Service mode.
2. Each time pressing [7] button on the remote control unit, the display changes as follows.
3. Flicker Adjustment*This adjustment is required when reparing T-CON CBA.
1. Operate the unit for more than 20 minutes.
2. Set the color analyzer and bring the optical receptor to the center on the LCD-Panel surface after zero point calibration as shown above.Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
3. Enter the Service mode.
4. Press [2] button on the remote control unit.
5. Press [P / ] buttons on the remote control unit so that the color analyzer value becomes minimum.
4. Auto Calibration [Component]Purpose: To bring the color adjustment of each component into standard alignment.
Symptom of Misadjustment: If this adjustment is incorrect, component signals do not reproduce the corresponding color.
1. Input the 100% White Purity (1080i /59.94 (30sF)).
2. Enter the service mode.
3. To enter the Auto Calibration adjustment mode, press [6] button on the remote control unit.
4. To start auto adjustment, press [ +] button on the remote control unit.
[7] button
Note:When entering this mode, the default setting is White mode.
Purity Check Mode
[7] button
Red mode
Green mode
Blue mode
Black mode
[7] button
White mode
[7] button
[7] button
Test Point Adj. Point
Screen [P / ] buttons
M. EQ. Spec.
Color analyzer See below
Figure
Color Analyzer
It carries out in a darkroom.
L = 3 cm
Perpendicularity
6-4 A73F2EA
he following adjustment normally are not attempted in the field. Only when replacing the LCD Panel then adjust as a preparation.
5. White Balance Adjustment*This adjustment is needed when reparing T-CON CBA.
Purpose: To mix red, green and blue beams correctly for pure white.
Symptom of Misadjustment: White becomes bluish or reddish.
1. Operate the unit for more than 20 minutes.
2. Input the White Purity.
3. Set the color analyzer to the CHROMA mode and bring the optical receptor to the center on the LCD-Panel surface after zero point calibration as shown above.Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
4. [CVBS]Enter the Service mode. Press [ -] button on the remote control unit and select “C/D/S 1” mode.
[YUV]Enter the Service mode. Press [ -] button on the remote control unit and select “C/D/S 2” mode. [RGB]Enter the Service mode. Press [ -] button on the remote control unit and select “C/D/S 3” mode.
5. [CVBS]----(APL 70%)Press [6] button to select “DB 1(C/D/S 1)” for Blue adjustment. Press [4] button to select “DR 1(C/D/S 1)” for Red adjustment. When “x” value and “y” value are not within specification, adjust “DB 1(C/D/S 1)” or “DR 1(C/D/S 1)”. Refer to “1. Initial Setting.”[CVBS]----(APL 30%)Press [3] button to select “COB 1(C/D/S 1)” for Blue adjustment. Press [1] button to select “COR 1(C/D/S 1)” for Red adjustment. When “x” value and “y” value are not within specification, adjust “COB 1(C/D/S 1)” or “COR 1(C/D/S 1)”. Refer to “1. Initial Setting.”After adjusting (APL 30%), verify (APL 70%) again and adjust repeatedly until both values are within specification.
6. [YUV]----(APL 70%)Press [6] button to select “DB 2(C/D/S 2)” for Blue adjustment. Press [4] button to select “DR 2(C/D/S 2)” for Red adjustment. When “x” value and “y” value are not within specification, adjust “DB 2(C/D/S 2)” or “DR 2(C/D/S 2)”. Refer to “1. Initial Setting.”[YUV]----(APL 30%)Press [3] button to select “COB 2(C/D/S 2)” for Blue adjustment. Press [1] button to select “COR 2(C/D/S 2)” for Red adjustment. When “x” value and “y” value are not within specification, adjust “COB 2(C/D/S 2)” or “COR 2(C/D/S 2)”. Refer to “1. Initial Setting.”After adjusting (APL 30%), verify (APL 70%) again and adjust repeatedly until both values are within specification.
7. [RGB]----(APL 70%)Press [6] button to select “DB 3(C/D/S 3)” for Blue adjustment. Press [4] button to select “DR 3(C/D/S 3)” for Red adjustment.When “x” value and “y” value are not within specification, adjust “DB 3(C/D/S 3)” or “DR 3(C/D/S 3)”. Refer to “1. Initial Setting.”[RGB]----(APL 30%)Press [3] button to select “COB 3(C/D/S 3)” for Blue adjustment. Press [1] button to select “COR 3(C/D/S 3)” for Red adjustment. When “x” value and “y” value are not within specification, adjust “COB 3(C/D/S 3)” or “COR 3(C/D/S 3)”. Refer to “1. Initial Setting.”After adjusting (APL 30%), verify (APL 70%) again and adjust repeatedly until both values are within specification.
8. Turn the power off and on again.
Test Point Adj. Point Mode Input
Screen[ -] button
[CVBS] C/D/S 1[YUV] C/D/S 2[RGB] C/D/S 3
White Purity (APL 70%)
or(APL 30%)
M. EQ. Spec.
Pattern Generator, Color analyzer
(APL 70%)x= 0.272 ± 0.03,y= 0.278 ± 0.03
(APL 30%)x= 0.272 ± 0.01,y= 0.278 ± 0.01
Figure
Color Analyzer
It carries out in a darkroom.
L = 3 cm
Perpendicularity
INPUT: WHITE 70%, 30%
30%=30IRE70%=70IRE
INPUT SIGNAL
7-1
System Control Block Diagram
A73F2BLS
BLOCK DIAGRAMS
CN
102
KE
Y-IN
1
KE
Y-IN
1
34
KE
Y S
WIT
CH
KE
Y S
WIT
CH
IC38
03(S
UB
MIC
RO
CO
NT
RO
LLE
R)
IC35
01(M
AIN
MIC
RO
CO
NT
RO
LLE
R)
TU
4102
(TU
NE
R U
NIT
)
CN
3501
3R
ES
ET
XO
UT
XIN
RE
SE
T
IC38
02A
L+
3.3V
X38
01
Q10
3Q
104
4MH
zO
SC
DIG
ITA
L M
AIN
CB
A U
NIT
PO
WE
R S
UP
PLY
CB
A
JAC
K C
BA
IR S
EN
SO
R C
BA
FU
NC
TIO
N C
BA
PO
WE
R S
UP
PLY
CB
A
CLN
51BRE
MO
TE
SE
NS
OR
RC
V89
1
AL+
3.3V
D10
2P
OW
ER
STA
ND
BY
D10
1
LED
-G8
8
CLN
51A
RE
MO
TE
55
LED
-R9
9
CN
302
CN
4502
RE
MO
TE
213
CN
4503
SD
A7
17
CN
303
SC
L8
16
CN
701
CN
4105
Q38
02
SD
A22
18
CN
7001
SC
L23
17
LED
1
RE
MO
TE
LED
113
11
54C
N55
2C
L552
B
72
27
36
PR
OT
EC
T1
4P
RO
TE
CT
32
BAC
KLIG
HT-
PWM
7BA
CKL
IGH
T-O
NP
RO
TE
CT
1P
RO
TE
CT
3
BAC
KLIG
HT-
PWM
BAC
KLIG
HT-
ON
6
CN
3802
KE
Y-IN
24
3
JUN
CT
ION
CB
A
RE
MO
TE
9 17
LAS
T-O
UT
16
4 6
910
A6
B6
SC
L
SD
A
G20
DT
V-O
N-H
H23
DT
V-R
ES
ET
H22
DT
V-B
US
-CO
NT
H21
DT
V-T
XD
H20
DT
V-R
XD
J23
DT
V-W
AK
EU
P
SC
LS
DA
L22
BU
S-O
PE
N
XO
UT
XIN
X35
02
27M
Hz
OS
CAC
10AB
10
IC80
2(T
ON
E C
ON
TR
OL) S
CL
SD
A14 13
IC77
01(V
IDE
O/A
UD
IO S
ELE
CTO
R)
SC
LS
DA
45 44
IC38
01(M
EM
OR
Y)
SC
LS
DA
6 5W
P7
IC31
03(H
DM
I IN
TE
RFA
CE
) SC
LS
DA
28 27R
ES
ET
102
BU
FF
ER
AM
P-M
UT
EA
MP
-ST
BY
V-C
OM
P-O
N-H
TO A
UD
IO-2
BLO
CK
D
IAG
RA
M
TO
INV
ER
TE
RB
LOC
K
DIA
GR
AM
(CL5
52A
)
AM
P-M
UT
EA
16
K23
BA
CK
LIG
HT-
PW
M
AM
P-S
TB
Y
J20
A11
BA
CK
LIG
HT-
ON
J21
E3
D1
PR
OT
EC
T3
LAS
T-O
UT
KE
Y-IN
1
KE
Y-IN
2
F3
A12
L23
B16
TO D
IGIT
AL
SIG
NA
L P
RO
CE
SS
BLO
CK
DIA
GR
AM
TO P
OW
ER
SU
PP
LYB
LOC
K D
IAG
RA
M
PR
OT
EC
T1
18
P-O
N-H
10
V-C
OM
P-O
N-H
222
Q38
01B
UF
FE
R
Q38
04B
UF
FE
R
STA
TU
S-O
UT
19S
TAT
US
-OU
TC
11
PO
FF
-OU
T20
RE
SE
T1
PO
FF
-OU
TD
11
RE
SE
TD
20
Q38
03B
UF
FE
R
Q38
07B
UF
FE
R
DT
V-W
AK
EU
P24
DT
V-R
ES
ET
23
DT
V-R
XD
28D
TV
-TX
D27
TU
-SC
L37
TU
-SD
A36
SW
ITC
HIN
GQ
4184
SW
ITC
HIN
GQ
4183
DT
V-O
N-H
TO P
OW
ER
SU
PP
LYB
LOC
K D
IAG
RA
MTO
DV
B-T
MO
DU
LEC
BA
UN
IT
7-2
Video Block Diagram
A73F2BLV
JAC
K C
BA
DIG
ITA
L M
AIN
CB
A U
NIT T
O D
IGIT
AL
SIG
NA
L P
RO
CE
SS
BLO
CK
DIA
GR
AM
S-V
IDE
O-I
N
34
21
YC
JK72
03
VID
EO
-IN
1 JK
7303
CO
MP
ON
EN
T-Y
-IN
1
CO
MP
ON
EN
T-P
b-IN
1
CO
MP
ON
EN
T-P
r-IN
1
JK71
01
CN
7001
CN
701
TU
-VID
EO
32R
18G
14B
16C
VB
S/Y
10P
b20
8
CN
7003
CN
702
DT
V-C
VB
S4
2C
N30
4C
N45
04D
TV
-CV
BS
46
22 26 24 30 20
CN
303
CN
4503
TU
-VID
EO
TU
-VID
EO
20R
3P
b5
4 21 19B
123
CN
302
CN
4502
G22
CV
BS
/Y18
Pr/
C20
2 6 4
Pr/
C12
28
IC77
01
(VID
EO
SE
LEC
TOR
)
1016 14 12 55 53 51 69 73 7124 26 63 67 65 22
VID
EO
SE
LEC
TOR
JK70
01
15 11 7V
IDE
O-B
1
VID
EO
-G1
VID
EO
-R1
1920B
GB
-V
IDE
O-I
N1
VID
EO
-OU
T1
JK70
02
15 11 7V
IDE
O-B
2
VID
EO
-G2
VID
EO
-R2
1920B
GB
-V
IDE
O-I
N2
VID
EO
-OU
T2
40 3834 32 33 28 29 30
17
R G B
CV
BS
/Y Pb
Pr/
C
T41
02(T
UN
ER
UN
IT)
VID
EO
-OU
TB
UF
FE
RQ
4101
VID
EO
SIG
NA
L
PO
WE
R S
UP
PLY
CB
A
WF
2
WF
1 WF
3
WF
4 WF
5 WF
6
CN
4105
DT
V-C
VB
S1
TO D
VB
-T M
OD
ULE
CB
A U
NIT
7-3
Audio-1 Block Diagram
A73F2BLA1
JAC
K C
BA
DIG
ITA
L M
AIN
CB
A U
NIT
PO
WE
R S
UP
PLY
CB
A
AU
DIO
SIG
NA
L
CN
701
CN
7001
AU
DIO
(L)
832
AU
DIO
(R)
733 C
N70
1C
N70
01T
U-A
UD
IO(L
)37
3T
U-A
UD
IO(R
)38
2H
DM
I-AU
DIO
(L)
346
HD
MI-A
UD
IO(R
)35
5H
DM
I-AU
DIO
(L)
2911
HD
MI-A
UD
IO(R
)30
10
CN
4503
CN
303
TU
-AU
DIO
(L)
159
TU
-AU
DIO
(R)
1410
HD
MI-A
UD
IO(L
)18
6H
DM
I-AU
DIO
(R)
177
HD
MI-A
UD
IO(L
)22
2H
DM
I-AU
DIO
(R)
231
SIF
TU
4102
(TU
NE
R U
NIT
)
TO D
IGIT
AL
SIG
NA
L P
RO
CE
SS
BLO
CK
D
IAG
RA
M
TO A
UD
IO-2
BLO
CK
DIA
GR
AM
AU
DIO
(L)
AU
DIO
(R)
MT
S/S
AP
AU
DIO
SIG
NA
LP
RO
CE
SS
6
PC
-AU
DIO
-IN
JK74
02
HD
MI-
AU
DIO
(L)-
IN
HD
MI-
AU
DIO
(R)-
IN
JK41
01
CO
MP
ON
EN
TA
UD
IO(L
)-I
N1
CO
MP
ON
EN
TA
UD
IO(R
)-I
N1
JK71
02
IC77
01(A
UD
IO S
ELE
CTO
R)
IC35
01(D
IGIT
AL
SIG
NA
L P
RO
CE
SS
)
IC31
04(A
UD
IO D
/A C
ON
VE
RT
ER
)
D/A
CO
NV
ER
TE
R
HD
MI-
SC
LK
HD
MI-
SD
ATA
HD
MI-
MC
LK
(L-C
H)
(R-C
H)
(L-C
H)
(R-C
H)
AU
DIO
(L)
-IN
1
AU
DIO
(R)
-IN
1
JK72
0393 91
99 98
85 87 94 92 86 88
AU
DIO
SE
LEC
TOR
(L-C
H)
AU
DIO
SE
LEC
TOR
(R-C
H)
AM
P-C
TR
L
89 9079 81 80 8277 78 83 84
97 961 100
JK70
01
13R
GB
-AU
DIO
(L)
-OU
T1
RG
B-A
UD
IO(R
)-O
UT
1
6R
GB
-AU
DIO
(L)
-IN
1
2R
GB
-AU
DIO
(R)
-IN
1
JK70
02
13R
GB
-AU
DIO
(L)
-OU
T2
RG
B-A
UD
IO(R
) -
OU
T2
6R
GB
-AU
DIO
(L)
-IN
2
2R
GB
-AU
DIO
(R)
-IN
2
A21
B23
D23
15 145687
62
TO A
UD
IO-2
BLO
CK
DIA
GR
AM
CN
702
CN
7003
DT
V-A
UD
IO(L
)1
5C
N45
04C
N30
4D
TV
-AU
DIO
(L)
82
DT
V-A
UD
IO(R
)2
4D
TV
-AU
DIO
(R)
64
HD
MI-
LRC
LK
WF
7
CN
4105
DT
V-A
UD
IO(L
)9
TO D
VB
-T M
OD
ULE
CB
A U
NIT
DT
V-A
UD
IO(R
)10
AM
P-C
TR
L
7-4
Audio-2 Block Diagram
A73F2BLA2
DIG
ITA
L M
AIN
CB
A U
NIT
PO
WE
R S
UP
PLY
CB
A
IR S
EN
SO
R C
BA
JAC
K C
BA
AU
DIO
SIG
NA
L
SP
802
SP
EA
KE
RL-
CH
TO A
UD
IO-1
BLO
CK
D
IAG
RA
M
TO A
UD
IO-1
BLO
CK
DIA
GR
AM
JK75
01H
EA
DP
HO
NE
JAC
K
AM
P-C
TR
L
CN
802
DR
IVE
CLN
802
SP
(L)+
2S
P(L
)-1
SP
801
SP
EA
KE
RR
-CH
CN
801
CLN
801
SP
(R)+
2S
P(R
)-1
Q80
2
AU
DIO
(L)
717
AU
DIO
(R)
816
AM
P-S
TB
Y4
20A
MP
-MU
TE
519
CLN
51B
CLN
51A
CN
4502
CN
302
SP
(L)+
1111
SP
(L)-
1212C
N70
01C
N70
1A
UD
IO(L
)-O
UT
382
AU
DIO
(R)-
OU
T39
1
SP
(R)+
11
SP
(R)-
22
IC80
2(T
ON
E C
ON
TR
OL)
AU
DIO
(L)
-OU
T
AU
DIO
(R)
-OU
T
JK41
01Q
4016
BU
FF
ER
Q40
17B
UF
FE
R
23 2
15 10
IC80
1(A
UD
IO P
OW
ER
AM
P)
44 1
3536 32 10 1431 139
CO
NT
RO
LLP
FTO
NE
C
ON
TR
OL
TON
E
CO
NT
RO
LC
ON
TR
OL
SH
UT
DO
WN
MU
TE
CO
NT
RO
L
LPF
DR
IVE
2122
IC75
01(A
MP
) MU
TE
5 3
7 1 2
Q85
3B
UF
FE
R
Q85
2B
UF
FE
R
AM
P-M
UT
EA
MP
-ST
BY
AU
DIO
(L)
AU
DIO
(R)
TO S
YS
TE
M C
ON
TR
OL
BLO
CK
DIA
GR
AM
7-5 A73F2BLD
Digital Signal Process Block DiagramL
CD
MO
DU
LE
AS
SE
MB
LY
CN
3302
RX
O0(
+)
10R
XO
0(-)
9R
XO
1(+
)13
RX
O1(
-)12
RX
O2(
+)
16R
XO
2(-)
15R
XO
3(+
)22
RX
O3(
-)21
RX
OC
(+)
19R
XO
C(-
)18
VC
OM
5
Y2,Y
6,Y8
,AA2
,AA3
,AA
5,AA
6,AA
8,AA
9,AB
1-AB
3,AB
5-AB
9,AC
2-AC
8
IC31
03 (
HD
MI I
NT
ER
FAC
E)
IC43
01 (
ME
MO
RY
)
7 9 4 6 1 3 10 1216 1544 43 48 47 52 51 40 39
86 85 84 88
31 32B
UF
FE
RQ
3104
JK31
01
JK31
02
BU
FF
ER
Q31
03
5 6
HD
MI-
DAT
AH
DM
I-C
LOC
KD
ATA
0(+
)D
ATA
0(-)
DAT
A1(
+)
DAT
A1(
-)D
ATA
2(+
)D
ATA
2(-)
CLO
CK
(+)
CLO
CK
(-)
96 97
63 62 67 66 71 70 59 58
HD
MI
CO
RE
0
HD
MI
CO
RE
1
MU
XX
OR
MA
SK
MAT
RIX
HD
MI-
SC
LK
28.3
22M
Hz
OS
C
X31
01
XTA
L-IN
XTA
L-O
UT
HD
MI-
LRC
LKH
DM
I-S
DAT
AH
DM
I-M
CLK
HD
MI-
SC
LKH
DM
I-LR
CLK
HD
MI-
SD
ATA
HD
MI-
MC
LK
110
144
AU
DIO
CO
DE
C
IIC I/F
SD
AS
CL
IC31
01 (
HD
MI M
EM
OR
Y)
5 6S
DA
SC
L
IC31
02 (
HD
MI M
EM
OR
Y)
IC35
01 (
DIG
ITA
L S
IGN
AL
PR
OC
ES
S)
5 6S
DA
SC
L
3029
BU
FF
ER
Q31
06
BU
FF
ER
Q31
05IIC I/F
7 9 4 6 1 3 10 1216 15H
DM
I-D
ATA
D-S
UB
HD
MI-
CLO
CK
DAT
A0(
+)
DAT
A0(
-)D
ATA
1(+
)
3 12 151 2R
ED
TU
-VID
EO
CV
BS
-YP
bP
r/C
R G B
GR
EE
NB
LUE
DAT
AC
LOC
K
DAT
A1(
-)D
ATA
2(+
)D
ATA
2(-)
CLO
CK
(+)
CLO
CK
(-)
JK43
01
D21
E22
E20
E21
VID
EO
SIG
NA
LA
UD
IO S
IGN
AL
TO V
IDE
OB
LOC
K D
IAG
RA
M
BU
FF
ER
Q43
03
BU
FF
ER
Q43
02
BU
FF
ER
Q43
01
BU
FF
ER
Q36
00
SW
LVD
ST
RA
NS
MIT
TE
R
TO S
YS
TE
M C
ON
TR
OL
BLO
CK
DIA
GR
AM
VC
OM
MU
X
W1
P1 K1U2 K2 J1 N1H1 T1 V1 M1
A/D
CO
NV
ER
TER
A/D
CO
NV
ER
TER
DIG
ITA
LS
IGN
AL
PR
OC
ES
S
P22
P23
R22
R23
T22
T23
V22
V23
U22
U23 D
RIV
EQ
3301
DIG
ITA
L M
AIN
CB
A U
NIT
TO A
UD
IO-1
BLO
CK
DIA
GR
AM
18D
IF-O
UT
119
DIF
-OU
T2
20IF
-AG
C
DIF
-OU
T2
30
IF-A
GC
34D
IF-O
UT
132
TU
4102
(TU
NE
R U
NIT
)
TO D
VB
-T M
OD
ULE
CB
A U
NIT
7-6 A73F2BLINV
Inverter Block Diagram
BA
CK
LIG
HT
1 2 1 2 1 2 1 2 1 2 1 2
INV
ER
TE
R C
BA
LC
D M
OD
UL
EA
SS
EM
BLY
CN
1050
CN
1100
CN
1150
CN
1200
CN
1250
CN
1300
IS VS
OV
P
CL5
52A
P
RO
TE
CT
32
BAC
KLI
GH
T-P
WM
7B
ACK
LIG
HT-
ON
6P
RO
TE
CT
14
IC15
00 (
CO
MP
AR
AT
OR
)
IC15
50 (
CO
MP
AR
AT
OR
)
V-R
EF
Q10
20
DR
IVE
21
3 13 126 5
147
IC10
01
(IN
VE
RT
ER
CO
NT
RO
L)
IC50
1 P
OW
ER
CO
NT
RO
L
21
3 13 12 9 10 6 5
14 8 7
9 108
V-R
EF
TO
SY
ST
EM
CO
NT
RO
LB
LOC
K
DIA
GR
AM
(CL5
52B
)
VC
C
VC
C
4 4Q
1002
Q10
03
Q10
01
T10
50Q
1100
,Q
1101
Q11
02,
Q11
03
Q12
50,
Q12
51
Q12
52,
Q12
53
3 1 4
78 6 5
2 T11
00
3 1 4
78 6 5
2 T11
50
3 1 4
78 6 5
2 T12
00
T50
1TO
P
OW
ER
SU
PP
LYB
LOC
K
DIA
GR
AM
AC
LH
OT-
GN
D
3 1 4
78 6 5
2 T12
50
3 1 4
78 6 5
2 T13
00
3 1 4
78 6 5
2
DR
IVE
DR
IVE
DR
IVE
DR
IVE
INV
ER
TE
RC
ON
TR
OL
10 11 14 15
2 3 4 5 7 84 5 23 2
14 3
2
D55
7
Q55
1
Q55
2
IC50
9
14 3
2
IC51
0
Q50
1
Q50
2
SH
UN
TR
EG
SW
25 3
7 1
POW
ERCO
NTRO
L
13
1119
DR
IVE
LOG
ICLO
GIC
DR
IVE
DR
IVE
BA
CK
LIG
HT
BA
CK
LIG
HT
BA
CK
LIG
HT
BA
CK
LIG
HT
BA
CK
LIG
HT
Q17
01
HO
T
HO
T C
IRC
UIT
. BE
CA
RE
FU
L.
12 16
NO
TE
:T
he v
olta
ge fo
r pa
rts
in h
ot c
ircui
t is
mea
sure
d us
ing
hot G
ND
as
a co
mm
on te
rmin
al.
7-7 A73F2BLP
Power Supply Block Diagram
HO
T
HO
T
CO
LD
PO
WE
R S
UP
PLY
CB
A
INV
ER
TE
R C
BA
HO
T C
IRC
UIT
. BE
CA
RE
FU
L.
Q60
2S
WIT
CH
ING
CO
NT
RO
L
14 3
2
IC60
3
IC63
7
T60
1C
N60
1
TO IN
VE
RT
ER
BLO
CK
DIA
GR
AM
CN
501
4
+3.
3VR
EG
.
HO
T-G
ND
2A
CL
121
P-O
N+
5V17
,18
+2.
5V10
+4V
12-1
4
+15
V6
+2.
5V8
AL+
3.3V
20+
5V/+
12V
-LC
D21
,22
+32
V4
F50
1T
4A H
250
VLI
NE
FIL
TE
R
L503
AC
501
AC
CO
RD
LIN
EF
ILT
ER
L502
BR
IDG
ER
EC
TIF
IER
AC
LH
OT-
GN
D
D50
2 -
D50
5
2
16 15 10 14 9 13 12 1176
SH
UN
TR
EG
.
Q60
1S
WIT
CH
ING
Q80
1
AM
P+
13V
P-O
N+
9V
P-O
N+
5V
P-O
N-H
TO
SY
ST
EM
CO
NT
RO
LB
LOC
K
DIA
GR
AM
AL+
3.3V
CN
301
CN
4501
+9V
RE
G.
Q63
9,Q
640
Q64
1
Q63
8
Q63
7
Q64
4
JS63
2
Q63
5
Q63
3
Q63
6
SW
+13
V
Q63
2
Q63
1
Q64
3
23
JS61
2
Q65
0,Q
651
Q65
2
SW
+5V
Q63
06,
7
1410-1
2
181642,3
20+
32V
+15
VP
-ON
+1.
5VIC
4505
+1.
5V R
EG
.
P-O
N+
1.8V
IC45
06+
1.8V
RE
G.
P-O
N+
3.3V
DT
V-O
N-H
AL3
.3V
+5V
/+12
V-L
CD
IC45
04+
3.3V
RE
G.
IC45
08+
3.3V
RE
G.
CN
4104
DT
V+
3.3V
6,7
TU
+5V
3,4
TO D
VB
-T M
OD
ULE
CB
A U
NIT
Q45
01S
W +
5V
Q45
02
TO
SY
ST
EM
CO
NT
RO
LB
LOC
K
DIA
GR
AM
DIG
ITA
L M
AIN
CB
A U
NIT
NO
TE
:T
he v
olta
ge fo
r pa
rts
in h
ot c
ircui
t is
mea
sure
d us
ing
hot G
ND
as
a co
mm
on te
rmin
al.
CA
UT
ION
!F
or c
ontin
ued
prot
ectio
n ag
ains
t fire
haz
ard,
repl
ace
only
with
the
sam
e ty
pe fu
se.
CA
UT
ION
!F
ixed
vol
tage
(or
Aut
o vo
ltage
sel
ecta
ble)
pow
er s
uppl
y ci
rcui
t is
used
in th
is u
nit.
If M
ain
Fus
e (F
501)
is b
low
n , c
heck
to s
ee th
at a
ll co
mpo
nent
s in
the
pow
er s
uppl
yci
rcui
t are
not
def
ectiv
e be
fore
you
con
nect
the
AC
plu
g to
the
AC
pow
er s
uppl
y.O
ther
wis
e it
may
cau
se s
ome
com
pone
nts
in th
e po
wer
sup
ply
circ
uit t
o fa
il.
8-1 A73F0_SC
SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTS
Standard Notes
WARNING
Many electrical and mechanical parts in this chassis have special characteristics. These characteristics often pass unnoticed and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts that have these special safety characteristics are identified in this manual and its supplements; electrical components having such features are identified by the mark “!” in the schematic diagram and the parts list. Before replacing any of these components, read the parts list in this manual carefully. The use of substitute replacement parts that do not have the same safety characteristics as specified in the parts list may create shock, fire, or other hazards.
Notes:1. Do not use the part number shown on these
drawings for ordering. The correct part number is shown in the parts list, and may be slightly different or amended 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 otherwise specified.
4. All capacitance values are indicated in µF (P = 10-6 µF).
5. All voltages are DC voltages unless otherwise specified.
8-2 A73F0_SC
LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE 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 (F501) is blown, first check to see that all components in the power supply circuit 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.
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. Voltage indications on the schematics are as shown below: Plug the TV power cord into a standard AC outlet.:
5. How to read converged lines
6. Test Point Information
2 315.0 5.0
Voltage Indicates that the voltage is not consistent here.
Power on mode(Unit: Volt)
3
2
1
A B C D
1-B1
1-D3
AREA D3
AREA B1
1-D3
Distinction AreaLine Number (1 to 3 digits)
Examples:1. "1-D3" means that line number "1" goes to the line number "1" of the area "D3". 2. "1-B1" means that line number "1" goes to the line number "1" of the 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.
8-3 A73F2SCP1
Power Supply 1/3 Schematic DiagramNOTE:The voltage for parts in hot circuit is measured usinghot GND as a common terminal.
CN301
1 02 12.13 12.14 3.45 06 5.27 5.28 ---9 010 5.311 5.312 5.313 014 3.415 016 2.917 018 15.919 020 32.1
21 0
22 3.3
23 0
VOLTAGE CHART
Pin No. Voltage
8-4 A73F2SCP2
Power Supply 2/3 Schematic Diagram
CN302
1 02 2.43 3.44 05 3.36 07 4.58 4.59 010 3.311 012 ---13 ---14 ---15 016 ---17 018 2.419 020 2.4
21 0
22 2.4
23 0
VOLTAGE CHART
Pin No. Voltage
8-5 A73F2SCP3
Power Supply 3/3 Schematic Diagram
CN303
1 2.42 03 2.44 05 2.56 07 58 59 010 011 5.212 5.213 014 3.315 3.216 017 2.618 2.619 020 2.321 022 0.623 0.6
CN304
1 02 03 04 0.65 06 2.47 08 2.39 0
VOLTAGE CHART
Pin No. Voltage
Pin No. Voltage
8-6 A73F2SCINV
Inverter & Junction Schematic Diagram
CAUTION !For continued protection against fire hazard,replace only with the same type fuse.
NOTE:The voltage for parts in hot circuit is measured usinghot GND as a common terminal.
CAUTION !Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.If Main Fuse (F501) 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.
CN552
1 02 3.13 ---4 3.15 ---6 3.27 3.48 0
VOLTAGE CHART
Pin No. Voltage
8-7
Jack 1/2 Schematic Diagram
A73F2SCJ1
8-8 A73F2SCJ2
Jack 2/2 Schematic Diagram
8-9 A73F2SCF
Function Schematic Diagram
CN102
1 ---2 ---3 3.44 3.45 3.46 0
VOLTAGE CHART
Pin No. Voltage
8-10
IR Sensor Schematic Diagram
A73F2SCIR
8-11
Digital Main 1/6 Schematic Diagram
A73F2SCD1
8-12
Digital Main 2/6 Schematic Diagram
A73F2SCD2
1 NOTE:The order of pins shown in this diagram is different from that of actual IC3501.IC3501 is divided into four and shown as IC3501 (1/4) ~ IC3501 (4/4) in this Digital Main Schematic Diagram Section.
8-13
Digital Main 3/6 Schematic Diagram
A73F2SCD3
1 NOTE:The order of pins shown in this diagram is different from that of actual IC3501.IC3501 is divided into four and shown as IC3501 (1/4) ~ IC3501 (4/4) in this Digital Main Schematic Diagram Section.
8-14
Digital Main 4/6 Schematic Diagram
A73F2SCD4
8-15
Digital Main 5/6 Schematic Diagram
A73F2SCD5
1 NOTE:The order of pins shown in this diagram is different from that of actual IC3501.IC3501 is divided into four and shown as IC3501 (1/4) ~ IC3501 (4/4) in this Digital Main Schematic Diagram Section.
8-16
Digital Main 6/6 Schematic Diagram
A73F2SCD6
1 NOTE:The order of pins shown in this diagram is different from that of actual IC3501.IC3501 is divided into four and shown as IC3501 (1/4) ~ IC3501 (4/4) in this Digital Main Schematic Diagram Section.
8-17
NOTE:The voltage for parts in hot circuit is measured usinghot GND as a common terminal.
Because 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.
BA73F0F01022-1
Power Supply CBA Top View
8-18
Power Supply CBA Bottom View
BA73F0F01022-1
NOTE:The voltage for parts in hot circuit is measured usinghot GND as a common terminal.
Because 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.
8-19 BA73F0F01032
Jack CBA Top View
8-20
WF1PIN 10 OFCN7001
WF2PIN 12 OFCN7001
WF5PIN 14 OFCN7001
WF4PIN 16 OFCN7001
WF6PIN 18 OFCN7001
WF3PIN 20 OFCN7001
WF7PIN 8 OFCN7001
Jack CBA Bottom View
BA73F0F01032
8-21 BA73F0F01042
Inverter CBA Top View
NOTE:The voltage for parts in hot circuit is measured usinghot GND as a common terminal.
CAUTION !Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.If Main Fuse (F501) 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.
Because 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.
CAUTION !For continued protection against fire hazard,replace only with the same type fuse.
8-22 BA73F0F01042
Inverter CBA Bottom View
NOTE:The voltage for parts in hot circuit is measured usinghot GND as a common terminal.
CAUTION !Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.If Main Fuse (F501) 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.
Because 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.
CAUTION !For continued protection against fire hazard,replace only with the same type fuse.
8-23
Function CBA Top View
Function CBA Bottom View
BA73F0F01022-2
8-24
BA73F0F01042
Junction CBA Top & Bottom View
BA73F0F01022-3
IR Sensor CBA Top View
IR Sensor CBA Bottom View
9-1 A73F0WF
WAVEFORMS
Input: PAL Color Bar Signal (with 1kHz Audio Signal)
WF1 ~ WF3 = Waveforms to be observed atWaveform check points.(Shown in Schematic Diagram.)
S-VIDEO-Y 0.2V 20µs
S-VIDEO-C 0.2V 20µs
COMPONENT-Y 0.2V 20µs20µs
COMPONENT-Pr 0.2V 20µs
COMPONENT-Pb 0.2V 20µs
Pin 20 of CN7001WF3
CVBS 0.2V 20µs
(VIDEO IN)
(S-VIDEO IN)
(COMPONENT IN)
WF1 Pin 10 of CN7001 WF2 Pin 12 of CN7001
(S-VIDEO IN)
(COMPONENT IN)
9-2 A73F0WF
B 0.5V
WF4 Pin 16 of CN7001
WF5 Pin 14 of CN7001
WF6 Pin 18 of CN7001
AUDIO 0.5V 0.5ms
WF7 Pin 8 of CN7001
20µs
G 0.5V 20µs
R 0.5V 20µs
Input: PAL Color Bar Signal (with 1kHz Audio Signal)
WF4 ~ WF7 = Waveforms to be observed atWaveform check points.(Shown in Schematic Diagram.)
10-1 A73F2WI
WIRING DIAGRAMS
INV
ER
TE
R
CB
A
FU
NC
TIO
NC
BA
TU
4102
TU
NE
R U
NIT
HD
MI-
AU
DIO
(L)-
INH
DM
I-A
UD
IO(R
)-IN
AU
DIO
(L)
-OU
TA
UD
IO(R
)-O
UT
AC
501
AC
CO
RD
PO
WE
R S
UP
PLY
CB
A
DIG
ITA
L M
AIN
CB
A U
NIT
D-S
UB
CO
NN
EC
TO
RH
DM
I-C
ON
NE
CT
OR
-1H
DM
I-C
ON
NE
CT
OR
-2
IR S
EN
SO
R
CB
A
JUN
CT
ION
CB
A
1 32 54 76 8 9 10 131211 14 15 1716 1918 2120 22 23
GN
D
GN
DH
DM
I-A
UD
IO(R
)H
DM
I-A
UD
IO(L
)G
ND
TU
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EO
HD
MI-
AU
DIO
(L)
GN
DH
DM
I-A
UD
IO(R
)
GN
D
FB
IN
RG
B-C
ON
T1
RG
B-C
ON
T2
GN
D
GN
D
SC
LS
DA
Pb
GN
D
GN
D24
BR
CN
701
TU
-AU
DIO
(R)
TU
-AU
DIO
(L)
CN
7001 1
620 1824 22 171921232529 2733 31 262830323438 36 353739
25 2726 2928 3130 32 33 34 373635 38 39
GN
D
Pr/
CG
ND
CV
BS
/YG
ND
AU
DIO
(L)
P-O
N+
5V
AU
DIO
(R)
P-O
N+
5V
P-O
N+
9V
AU
DIO
(R)-
OU
T
P-O
N+
9VA
UD
IO(L
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UT
G GN
D
15 39 7 24681014 12 111315
CN
552
CN
3802
81
GN
D
63
PR
OTE
CT2
(NU
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2P
RO
TEC
T3
54
PR
OT
EC
T1
45
P-O
N-H
(NU
)
27
BACK
LIG
HT-P
WM
36
BAC
KLI
GH
T-O
N
18
GN
D
CN
3302
30+
5V/+
12V
-LC
D+
5V/+
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12V
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5V/+
12V
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D+
5V/+
12V
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D
29 28 27 26 25G
ND
GN
DG
ND
24 23 22R
XO
3(+
)21
RX
O3(
-)20
GN
D19
RX
OC
(+)
18R
XO
C(-
)17
GN
D16
RX
O2(
+)
15R
XO
2(-)
14G
ND
13R
XO
1(+
)12
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O1(
-)11
GN
D10
RX
O0(
+)
9R
XO
0(-)
8G
ND
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DG
ND
7 6 5V
CO
M4
NU
3N
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2 1
CN
4105
1D
TV
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2 3 4 5 6G
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D7 8 9
DT
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)10
DT
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)11
GN
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GN
D13
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14G
ND
15N
U16
NU
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U18
NU
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U20
NU
21N
U22
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D23
DT
V-R
ES
ET
DT
V-W
AK
EU
PN
U24 25 26
NU
27D
TV
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DT
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T2
29 30 31G
ND
32D
IF-O
UT
133
GN
D34
IF-A
GC
GN
DT
U-S
DA
35 36 37T
U-S
CL
38N
U39
NU
NU
40
CN
4104
1G
ND
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DT
U+
5VT
U+
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ND
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TV
+3.
3VD
TV
+3.
3VG
ND
7 8
LC
D M
OD
UL
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SS
EM
BLY
CN
4501
CN
301
15 39 7 24681014 1218 16 111315171923 21 20
2319 2115 17 222018161410 126 8 13119751 3 4
22G
ND
AL+
3.3V
GN
DP
-ON
+5V
P-O
N+
5VN
U
+4V
GN
D+
4V
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GN
D
GN
D+
2.5V
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5V
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D
GN
D+
15V
+32
VG
ND
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OT
EC
T2
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OT
EC
T1
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V-L
CD
+5V
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V-L
CD
2
CN
4504
CN
304
4 2 1359 7 6
6 8 9751 3 4
8G
ND
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VB
SG
ND
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)G
ND
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UD
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)G
ND
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2
CL5
52A
C
L552
B
11
GN
D
33
PR
OTE
CT2
(NU
)2
2P
RO
TEC
T3
44
PR
OT
EC
T1
55
P-O
N-H
(NU
)
77
BACK
LIG
HT-P
WM
66
BAC
KLI
GH
T-O
N
88
GN
D
GN
D
AM
P-S
TB
YA
MP
-MU
TE
GN
DA
UD
IO(L
)A
UD
IO(R
)
LED
1
GN
DN
U
LED
3(N
U)
GN
D
LED
4(N
U)
PW
R-C
ON
T(N
U)
NU
GN
D
GN
DC
VB
S/Y
Pr/
CG
ND
GN
DG
CN
302
P-O
N-H
RE
MO
TE
CN
4502
15 39 7 24681014 1218 16 111315171923 21 2022
2319 2115 17 222018161410 126 8 13119751 3 42
B GN
DP
bG
ND
SD
AS
CL
RG
B-C
ON
T2
GN
DF
BIN
RG
B-C
ON
T1
TU
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DIO
(L)
GN
DT
U-A
UD
IO(R
)
GN
D
GN
D
HD
MI-
AU
DIO
(R)
HD
MI-
AU
DIO
(L)
TU
-VID
EO
GN
D
HD
MI-
AU
DIO
(R)
HD
MI-
AU
DIO
(L)
CN
303
GN
DR
CN
4503
15 39 7 24681014 1218 16 111315171923 21 2022
2319 2115 17 222018161410 126 8 13119751 3 42
CLN
801
2C
N80
1
1S
P(R
)+S
P(R
)-
CLN
802
2C
N80
2
1S
P(L
)+S
P(L
)-S
P80
2S
PE
AK
ER
L-C
H
SP
801
SP
EA
KE
RR
-CH
JAC
K
CB
A
CO
MP
ON
EN
T-Y
-IN
1
CO
MP
ON
EN
T-P
b-IN
1
CO
MP
ON
EN
T-P
r-IN
1
CO
MP
ON
EN
T-
AU
DIO
(L)-
IN1
CO
MP
ON
EN
T-
AU
DIO
(R)-
IN1
VID
EO
-IN
1
AU
DIO
(L)
-IN
1
AU
DIO
(R)
-IN
1
PC
-AU
DIO
-IN
S-V
IDE
O-I
N
HE
AD
PH
ON
EJA
CK
SC
AR
TJA
CK
1
SC
AR
TJA
CK
2
CN
102
CN
3501
1 32 4 5
GN
DA
L+3.
3VK
EY-
IN1
NU
6N
U
KE
Y-IN
2
15 3 246
CN
7003
CN
702
1 32 4 5
GN
DD
TV
-CV
BS
GN
D
DT
V-A
UD
IO(L
)D
TV
-AU
DIO
(R)
4 2 135
CN
601
CN
501
11
2A
CL
HO
T-G
ND
2
CLN
51B
CLN
51A
BA
CK
LIG
HT
CN
1050
21
BA
CK
LIG
HT
CN
1100
21
BA
CK
LIG
HT
CN
1150
21
BA
CK
LIG
HT
CN
1200
21
BA
CK
LIG
HT
CN
1250
21
BA
CK
LIG
HT
CN
1300
21
SP
(R)+
SP
(R)-
GN
D
RE
MO
TE
NU
AL+
3.3V
NU
LED
-G
1 32 4 5 662 4 5
7 88731
9 10109
11 121211
LED
-RN
US
P(L
)+S
P(L
)-
DV
B-T
MO
DU
LE
CB
A U
NIT
11-1 A73F2CEX
EXPLODED VIEWSCabinet
A1
A21
B1
L19
B12
A9
A6
B8
A5
A2
L1
L7L1
B5
L9L1
L6
L18
L7
L16
B4B4
L3
B7
A10
B1
L6
See Electrical Parts List for parts with this mark.
Digital MainCBA Unit
Inverter CBA
AC501
B10
B19
L4
L1
L9
L1
IR Sensor CBA
Function CBA
CLN801
CLN802
SP802
SP801
Power Supply CBA
L4
B19
L9
L4
L9
B6
L9
B20
B11
L16
L11
A12
Jack CBA
L16
L16
JunctionCBA
L1
L9
L1
L1
CL3302
B16
B16 S5
L16
L9
B34
A23
L11
L11
L11
L8
B29B40B39
B3L9
B40
L8
L8
L8
L12
L12
L3
A12
L12
L2L12
A14
L2
L2
L12
L2
A4
CLN102
A3
L2
L4
A7
B17
L4
L4
B47
L9
L9
L9
L9
T-CON CBA
B41
L8
DVB-T Module CBA Unit
CL7003
CL7001
CL4104
CL4105
LCD Module Assembly
11-2 A73F2PEX
Packing
S1
S2
S5
S4
S3
X1
X3 X5
Tape
Packing Tape
Some Ref. Numbers are not in sequence.
Packing TapePacking Tape
FRONT
Packing Tape
X2-2
S16
S16
20071105 12-1 A73F2CA
MECHANICAL PARTS LIST
PRODUCT SAFETY NOTE: Products marked with a ! have special characteristics important to safety. Before replacing any of these components, read carefully the product safety notice in this service manual. Don't degrade the safety of the product through improper servicing.
NOTE: Parts that are not assigned part numbers (---------) are not available.
Ref. No. Description Part No.
A1 FRONT CABINET A73F0EP 1EM021797A
A2 BRAND BADGE L5825FF 1EM424293
A3 CONTROL PLATE A73F2FP 1EM323137
A4 REAR CABINET A73F2FP 1EM021885
A5 DECORATION PLATE A73F2FP 1EM122093
A7 FUNCTION KNOB A73F0EP 1EM121950
A9 STAND COVER L4301UB 1EM221344B
A10 REAR COVER A73F0EP 1EM322722
A12 STAND RUBBER FOOT L5001CB 1EM423855
A14 JACK PLATE A73F0EP 1EM221631
B1 PANEL HOLDER 32V A71F0UH 1EM121831A
B3 SHIELD BOX TOP A73F2FP 1EM122073
B4 CHASSIS BRACKET 32V-PAL A73F2FP 1EM122074
B5 JACK HOLDER(A) A73F0EP 1EM221630
B6 JACK HOLDER(D) A73F2FP 1EM221763
B7 STAND BASE PLATE L4300UA 1EM121113B
B8 STAND HINGE A71F3UH 1EM221883
B16 CLOTH(10X180XT0.5) L0336JG 0EM408827
B17 CLOTH 10X150XT1.0 1EM421092
B19 CLOTH(20X65XT0.5) L0100JA 0EM407914
B29 SHIELD PLATE A73F2FP 1EM221744
B39 GASKET(A) A73F0EP 1EM424765
B40 GASKET(B) A73F0EP 1EM425059
B47 SHIELD BOX BOTTOM A73F2FP 1EM221743
CL3302 WIRE ASSEMBLY LVDS-FFC 30PIN / 30MM / UL289
WX1A73F0-101
CL4104 WIRE ASSEMBLY 8PIN / 190MM /UL1007 WX1A73F0-002
CL4105 WIRE ASSEMBLY 40PIN-28PIN / 100MM WX1A73F0-001
CL7001 WIRE ASSEMBLY FFC 39PIN / 130MM / UL28 WX1A73F0-102
CL7003 WIRE ASSEMBLY FFC 5PIN / 130MM / UL289 WX1A73F0-103
CLN102 WIRE ASSEMBLY 002 6PIN / 185MM / AWG26 WX1A71F3-002
CLN801 WIRE ASSEMBLY 2PIN/280MM/UL1007 WX1A73F0-005
CLN802 WIRE ASSEMBLY 2PIN/280MM/UL1007 WX1A73F0-005
L3 SCREW P-TIGHT M3X12 DISH HEAD+ GDJP3120
L4 SCREW P-TIGHT M3X10 BIND HEAD+ GBJP3100
L7 SCREW B-TIGHT 3X10 BIND HEAD+ BLK GBHB3100
L9 SCREW S-TIGHT M3X6 BIND HEAD+ GBJS3060
L12 DOUBLE SEMS SCREW M4X9 + BLACK L0130UA
0EM408146A
SP801 SPEAKER S0516F06 DSD0813XQ002
SP802 SPEAKER S0516F06 DSD0813XQ002
PACKINGS4 SET BAG L4300UA 1EM321546
ACCESSORYX3 REMOTE CONTROL NF022RD 170/
ECNLC501/NF022RDNF022RD
Ref. No. Description Part No.
A6! RATING LABEL A73F2FP ----------
A21 POP LABEL A7343FP ----------
A23 CARD LABEL A7343FP ----------
B20 GASKET A71F0UH 1EM424393
B34 RUBBER CUSHION (10X10X20) A71F0UH 1EM424528
B41 RUBBER CUSHION (10X10X13) A71F0UH 1EM424527
L1 SCREW P-TIGHT 4X14 BIND HEAD GBJP4140
L2 SCREW P-TIGHT M4X14 PAN HEAD+BLK GPHP4140
L4 SCREW P-TIGHT M3X10 BIND HEAD+ GBJP3100
L7 SCREW B-TIGHT 3X10 BIND HEAD+ BLK GBHB3100
L8 SCREW S-TIGHT M3X4 BIND HEAD GBJS3040
L9 SCREW S-TIGHT M3X6 BIND HEAD+ GBJS3060
L11 DOUBLE SEMS SCREW M4X6 M4X6 FPJ34060
L12 DOUBLE SEMS SCREW M4X9 + BLACK L0130UA
0EM408146A
L18 SCREW S-TIGHT M3X8 BIND HEAD+ GBHS3080
L19 HEX SCREW #4-40 7MM 1EM422042
PACKINGS1 CARTON A73F2FP 1EM425162
S2 STYROFOAM TOP A73F0EP 1EM021811
S3 STYROFOAM BOTTOM A73F0EP 1EM021812
S5 SERIAL NO. LABEL L9750UA ----------
S16 FRONT REAR PAD A73F2FP 1EM425664
ACCESSORIESX1 BAG POLYETHYLENE 235X365XT0.03 0EM408420A
X2-2! OWNERS MANUAL(FR) A73F2FP 1EMN22561
X5 BATTERY R6RC/2P XB0M601MS001
Ref. No. Description Part No.
20071105 13-1 A73F2EL
ELECTRICAL PARTS LIST
PRODUCT SAFETY NOTE: Products marked with a ! have special characteristics important to safety. Before replacing any of these components, read carefully the product safety notice in this service manual. Don't degrade the safety of the product through improper servicing.
NOTES:
1. Parts that are not assigned part numbers (---------) are not available.
2. Tolerance of Capacitors and Resistors are noted with the following symbols.
LCD MODULE ASSEMBLY
*Flicker Adjustment and White Balance Adjustment
Recommended