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1
HAIER
COLOR TELEVISION
SERVICE MANUAL
PART # TV-8888-38
HAIER AMERICA TRADING, LLC www.haieramerica.com
NO:M-AM-US-20R21-76814 Edition: 2002.12.30
HTX20S32 COLOR TELEVISION
Service Manual
MODEL: HTX20S32
�� Features �� MTS Stereo �� Front Audio/Video input �� V-CHIP, CCD
���������
1
�
CONTENTS
1 Contents--------------------------------------------------------------------1
2 Product Code illumination and Series Introduction--------------------2
3 Features--------------------------------------------------------------------------------3
4 Safety Precautions------------------------------------------------------------------4
5 Warning and Cautions-------------------------------------------------------------5
6 Net dimension----------------------------------------------------------------------11
7 Parts and Functions--------------------------------------------------------------12
8 Remote Controller Functions--------------------------------------------------13
9 Program Diagram------------------------------------------------------------------14
10 Maintenance Service and Trouble shooting------------------------------15
11 Circuit Diagram---------------------------------------------------------------------18
12 Circuit Explanation----------------------------------------------------------------22
13 Adjustment---------------------------------------------------------------------------24
14 Exploded View----------------------------------------------------------------------27
15 List of Parts--------------------------------------------------------------------------28
16 Damageable Parts List-----------------------------------------------------------44
17 Information of Resistors and Capacitors----------------------------------44
CONTENTS
2
2.Product Code illumination and Series Introduction
H T X 20 S32
Haier
Series Name
CRT size (unit: inch)
Color television appearance
Product Code illumination and Series Introduction
FLAT CRT
3
3.Features MODEL HS-2190
MODEL TV-9708 NO. ITEM FUNCTION
NO. ITEM FUNCTION
1 Main IC 76814 24 Digital curtain
2 CRT Flat square 25 Slow fading on & off
3 Color system NTSC 26 Semitransparent menu
4 Audio system M 27 Non-flashing channel changing
5 Number of channels 181 28 ZOOM
6 OSD language E F S 29 16:9 mode
7
PICTURE
Multi-picture modes 30 Games
8 AV stereo 31 Calendar
9 Super woofer 32 Child-lock
10 Surrounding sound 33 Multi-functional lock
11 Treble/bass boost 34 No-picture listening
12 Left/right balancer 35 Background light
13 NICAM 36 Auto-timer on
14 Multi-audio modes 37 CCD
15 Tone adjuster 38
SOFTWARE
V-CHIP
16 MTS/SAP 39 Number of built-in speakers 2
17
AUDIO
Auto-volume leveling 40 Audio output power (W) 3+3
18 AV input Rear 1fornt 1 41 Total power input W 70
19 AV output Rear 1 42 Voltage range V 110~220
20 DVD terminal 43 Power frequency Hz 60
21 S-video jack Rear 1 44 Time of sleep timer (MINS) 120
22 Headphone socket 45 Net weight (KG) 23.5
23
JACK
SCART socket 46 Gross weight (KG) 25
47 Net dimension (MM) 475×450×435
48 Packaged dimension (MM) 550X505X505
49 Quantity for 20' container
50 Quantity for 40' container
51
PARAMETER
Quantity for 40' high container
Features
4
4. Safety Precautions
SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical identify these parts and mechanical parts in this chassis have special safety-related characteristics! In the Schematic Diagram and Replacement Parts List.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of the manufacturer.
General Guidance
An Isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents that might result in personal injury caused by electrical shocks.
It will also protect the receiver and it’s components from being damaged by accidental shorts of the circuitry that might be inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with a specified one.
When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1W), keep the resistor 10mm away from PCB.
Keep wires away from high voltage or high temperature parts.
Due to the high vacuum and large surface area of the picture tube, extreme care should be taken in handling the Picture Tube. Do not lift the Picture Tube by its Neck.
X-RAY Radiation
Warning:
The source of X-RAY RADIATION in this TV receiver is the High Voltage Section and the Picture Tube.
For continued X-RAY RADIATION protection, the replacement tube must be of the same type as specified in the Replacement Parts List.
Before returning the receiver to the customer,
Always perform an AC leakage current check on the exposed metallic parts of the cabinet, such as antennas, terminals, etc., to make sure that the set is safe to operate without any danger of electrical shock.
Safety Precautions
5
5.Warning and Cautions
CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS.
1. When you clean the TV set, please pull out the power plug from AC outlet. Don't clean the cabinet and the screen with benzene, petrol and other chemicals.
4. To prevent the TV set from firing and electric shock, don'tmake the TV set rain or moisture.
2. In order to prolong the using life of the TV set, please place it on a ventilated place.
5. Don't open the back cover, otherwise it is possible to damage the components in the TV set and harm you.
3. Don't place the TV set in the sunshine or near heat source.
6. When the TV set isn't going to be used for long time or it is in thunder and lightening, please pull out the plug from AC outlet and the antenna plug from the cover of the TV set.
Explanation on the display tube
Generally, it is not needed to clean the tube surface. However, if necessary,its surface can be cleaned with a dry cotton cloth after cutting off the power.Don't use any cleanser. If using hard cloth, the tube surface will be damaged.
Warning and Cautions
6
NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions. Remember: Safety First.
General Servicing Precautions
1). Always unplug the receiver AC power cord from the AC power source before:
a. Removing or reinstalling any component, circuit board module or any other assembly of the receiver.
b. Disconnecting or reconnecting any receiver electrical plug or other electrical connection.
c. Connecting a test substitute in parallel with an electrolytic capacitor in the receiver.
CAUTION: A wrong substitution part or incorrect installation polarity of electrolytic capacitors may result in an explosion hazard.
d. Discharging the picture tube anode.
2). Test high voltage only by measuring it with an appropriate high voltage meter or other voltage-measuring device (DVM, FETVOM, etc.) equipped with a suitable high voltage probe. Do not test high voltage by “drawing an arc”.
3) .Discharge the picture tube anode only by (a) first connecting one end of an insulated clip lead to the degaussing or kine aquadag grounding system shield at the point where the picture tube socket ground lead is connected, and then (b) touch the other end of the insulated clip lead to the picture tube anode button, using an insulating handle to avoid personal contact with high voltage.
4) .Do not sprays chemicals on or near this receiver or any of its assemblies.
5). Unless specified otherwise in this service manual, clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable nonabrasive applicator; 10% (by volume) Acetone and 90% (by volume) isopropyl alcohol (90%-99% strength)
CAUTION: This is a flammable mixture.
Unless specified otherwise in this service manual, lubrication of contacts is not required.
6). Do not defeat any plug / socket B+ voltage interlocks with which receivers covered by this service manual might be equipped.
7). Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heat sinks are correctly installed.
8) Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead.
Always remove the test receiver ground lead last.
9). Use with this receiver only the test fixtures specified in this service manual.
CAUTION: Do not connect the test fixture ground strap to any heat sink in this receiver.
Electrostatic ally Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such
Warning and Cautions
7
components are usually called Electrostatic ally Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.
1) Immediately before handling any semiconductor component or semiconductor- equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock prior to applying power to the unit under test.
2) After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3) Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4) Use only an anti-static type folder removal device. Some solder removal devices not classified as “anti-static” can generate electrical charges sufficient to damage ES devices.
5) Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6) Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material).
7) Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.
CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8) Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise even some normally harmless motions such as mutual brushing of your clothes’ fabric or lifting of your foot from a carpeted floor might generate static electricity sufficient to damage an ES device.)
General Soldering Guidelines
1) Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range of 500 oF to 600 oF.
2) Use an appropriate gauge of RMA resin-core solder composed of 60 parts tin/40 parts lead.
3) Keep the soldering iron tip clean and well tinned.
4) Thoroughly clean the surfaces to be soldered. Use a mall wire bristle (0.5 inch, or 1.25cm) brush with a metal handle. Do not use freon-propelled spay-on cleaners.
5) Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature. (500 o F to 600o F)
b. Heating the component lead until the solder melts.
c. Quickly draw the melted solder with an anti-static, suction-type solder removal device with solder braid.
Warning and Cautions
8
CAUTION: Work quickly to avoid overheating the circuit board printed foil.
1) Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature. (500 o F to 600o F)
b. First, hold the soldering iron tip and solder the strand against the component lead until the solder melts.
c. Quickly move the soldering iron tip to the junction of the component lead and the printed circuit foil, and hold it there only until the solder flows onto and around both the component lead and the foil.
CAUTION: Work quickly to avoid overheating the circuit board printed foil.
d. Closely inspect the solder area and remove any excess or splashed solder with a small wire-bristle brush.
Remove /Replacement
Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are of slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined.
Removal
Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts.
Draw away the melted solder with an anti-static suction-type solder removal device (or with solder braid) before removing the IC.
Replacement
Carefully insert the replacement IC in the circuit board.
Carefully bend each IC lead against the circuit foil pad and solder it.
Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to the areas).
“Small-Signal” Discrete Transistor Removal/Replacement
Remove the defective transistor by clipping its leads as close as possible to the component body.
Bend into a “U” shape the end of each of three leads remaining on the circuit board.
Bend into a “U” shape the replacement transistor leads.
Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the “U” with long nose pliers to insure metal to metal contact then solder each connection.
Power Output, Transistor Device Removal/Replacement
Heat and remove all solder from around the transistor leads.
Warning and Cautions
9
Remove the heat sink mounting screw (if so equipped).
Carefully remove the transistor from the heat sink of the circuit board.
Insert new transistor in the circuit board.
Solder each transistor lead, and clip off excess lead.
Replace heat sink.
Diode Removal/Replacement
Remove defective diode by clipping its leads as close as possible to diode body.
Bend the two remaining leads perpendicularly to the circuit board.
Observing diode polarity, wrap each lead of the new diode round the corresponding lead on the circuit board.
Securely crimp each connection and solder it.
Inspect (on the circuit board copper side) the solder joints of the two “original” leads. If they are not shiny, reheat them and if necessary, apply additional solder.
Fuse and Conventional Resistor Removal/Replacement
1) Clip each fuse or resistor lead at top of the circuit board hollow stake.
2) Securely crimp the leads of replacement component around notch at stake top.
3) Solder the connections
CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures.
Circuit Board Foil Repair
Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds foil to the circuit board causing the foil to separate from or “lift-off” the board. The following guidelines and procedures should be followed whenever this condition is encountered.
At IC Connections
To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connections).
1) Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary).
2) Carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining copper pattern.
3) Bend a small “U” in one end of a small gauge jumper wire and carefully crimp it around the IC pin. Solder the IC connection.
4) Route the jumper wire along the path of the out-away copper pattern and let it overlap the previously scraped end of the good copper pattern. Solder the overlapped area and clip off any excess jumper wire.
Warning and Cautions
10
At other connections
Use the following technique to repair the defective copper pattern at connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board.
1) Remove the defective copper pattern with a sharp knife.
Remove at least 1/4 inch of copper, to insure that a hazardous condition will not exist if the jumper wire opens.
2) Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly connected to the affected copper pattern.
3) Connect insulated 20-gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side.
Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper wire is dressed so that it does not touch components or sharp edges.
Warning and Cautions
11
6.Net dimension
�����
Net dimension
12
7.Parts and Functions
Parts and Functions
HTF20R21
13
8.Remote Controller Functions
1. Power Button2. Time & Channel Display Button3. Rating Button TV Program (V-Chip Setup)4. Last Channel Recall Button5. Volume(+/-) Select Button6. Personal Preference Select7. Channel(+/-) Select Button
8. Menu Select Button9. Audio Select Button9. Audio Select Button10.Direct Access Channel Select11. TV/AV Input Button12. Mute Button13. Sleep Timer
17
1 2 3
654
7 8 9
0
MENU RECALL
RATING
CH+
VOL+
CH-
SOUND
P.STD
HaierHYF-25E
R
1
2
3
4
5
6
7
8
9
TV/AV DISP
Remote Controller Functions
14
9. Program Diagram
Insert the power plug into the power line socket and insert the antenna plug into the antenna socket on the rear panel. Press down the power switch of the TV set. The red indicator light goes on.
Program preset
A 1). Auto searching and storing program
Press MENU button on the remote controller to call up the “PREST” menu on the screen. Use the “ ” key to select the bar “auto search” then press the “ ” to make sure. If you want to stop, press the key “ ”.
2). Deleting channel number
Press channel up/down buttons to select a channel to skip. Press MENU to call up the “PREST” menu on the screen. Then Press the” “item to select the bar “Add/Delete” then use the “ ” key to select Add or Delete.
B Volume tuning
Press VOLUME buttons VOL- to decrease and VOL+ to increase the volume.
C Personal preference settings
Picture modes
Press P.STD repeatedly to change among Personal, Standard, Vivid, Soft to change the Picture Mode.
Program Diagram
15
10.Maintenance service and trouble shooting 1). Adjustment item Explanation:
OSD Explanation Range Remark 0 H.PHASE H.PHASE 0~31 1 NT.H.PHASE H.PHASE 0~31 No used 2 H.BLK.LEFT 0~7 3 H.BLK.RIGHT 0~7 4 V.SIZE Vertical Size 0~127 5 V.LINE Vertical Linearity 0~31 6 V.POSI Vertical DC 0~63 7 V.SC Vertical S-Correction 0~31 8 NT.V.SIZE Vertical Size -32~+31 No used 9 NT.V.LINE Vertical Linearity -16~+15 No used 10 NT.V.POSI Vertical DC -32~+31 No used 11 NT.V.SC Vertical S-Correction -16~+15 No used 12 RF.AGC RF AGC Delay 0~63 13 VOL.OUT Volume Control 0~127 14 OSD H.POSI 0~127 15 OSD V.POSI 0~31 16 INPUT LEVEL 0~15 17 SPECTRAL 0~63 (0~31)PHILIP IC 18 WIDEBAND 0~63 (0~31)PHILIP IC 19 STEREO VCO 0~63 No used 20 FILTER SET 0~63 No used 21 SAP VCO 0~63 No used
“ ”
γγ
“ ”“ ”
. Maintenance service and trouble shooting
16
Brt.Abl.Def (0/1)
Mid.Stp.Def (0/1)
— R-Y/B-Y Gain Balance (0~15) No use (LA76814)
R-Y/B-Y Angle (0~15)
C_Kill OFF (0/1)
Sound Trap (0~7)
Volume Filter Defeat
Video IF setting (0 45.75M 1 58.75M) For LA76814
Video Level (0~7)
FM Level (0~31)
0 turn TV on twice 1 memory 2 3Turn TV on first
0 without AV 1 one AV input 2 two AV input 3 Three AV input
No used No usedNo used No usedNo used No used
’
NOTHING NOTHING
.Maintenance service and trouble shooting
17
Check to see if Fuse3 is normal
No lig
Abnormal
Check VD501, C507, V513, etc.
Check to see if the collector voltage of V552
is 0V
Check N101 ect
Check to see if , 12v,
5v is normal
Check the control voltage of V552 or
CPU power
The failure of horizontal unit or
N551 N552
Normal
Normal
Normal Abnormal
Check to see 110V 180V etc. voltage is normal
Test to see all terminal Resistance of load
Is normal
Check power unit
Check to see if rectifying tube
is normal
Change rectifying tube
Check the Loader
Abnormal
Normal
Abnormal
Normal Abnormal
Normal Abnormal
Maintenance Service and Trouble shooting
18
11. Circuit Diagram
Circuit Diagram
NO:M-AM-US-20R21-76814 Edition: 2002.12.30
Circuit Diagram
K6D
B1-ADJ
HV
FOCUS
SCREEN
ABL
H-PULSE
FO
5
4
3
2
1
13
14
12
11
8
9
10
2
CRT BOARD
10
9
7
6
5
4
3
18
PCC H-W
CY
Lout
Vout
LIVE AREAAC220V50HZ
1 2
34
Rout
V1in
L1in
R1in
V2in
L2in
R2in
SDA
SCL
AUDIO
Rout
Lout
Rin
Rout
Lin
Lout
XS603
XS604
OMIT-SS--112LM
OMIT-SS--112LM
1
611
8
2
10
2
7 1
4
4
2
1
1
1
3
5
9
3
3
C5512KV470
C5541KV470
V5542SB892(S)
V5532SC1815
RP551B-2K
C56535V2200
+
C561160V220
+
C56425V2200
+
B612V
R5534. 7K
R554150K
R5551/ 2DJ47K
R55622K
R5512SJ22K
R5521/ 2DJ100K
R569275/ 1A
XS401
SCN-4Y
TP-GTEST
TP- HTEST
XS402TJC2-6A-4T
XP402TJC2-5Y
B1110V
R4911FJ3. 3
C432500KK1000
W902 JG 0034
C93116V10
+
R902100
R912100
R922100
R924330
C921CJ390
C911
CJ220
C901CJ390
C9392KV1000
R9181/ 2SJ2. 7K
R9281/ 2SJ2. 7K
R904330
C903CJ56R
R914330
C913CJ56R
C923CJ56R
R9311K
U901XXXXXXX
R9081/ 2SJ2. 7K
R900DJ10K
V9022SC2688
V9122SC2688
V9222SC2688
C93216V10
+
R906560
R916680
R93215K
R9331. 5K
R9072SJ10K
R9172SJ10K
R9272SJ10K
R926680
R94033
K9NTJC2-2A
XP901SCN-4Y
XP902SCN-5Y
B224V
B1110V
B312V
B75V
B1110V
B312V
B55V
B55V
B312V
SW701CH+
SW702CH-
SW705MENU
SW706AV/ TV
SW703V+
SW704V-
C70116V47
+
L70139UH
C7020. 01
C7030. 01
C70415P
C70518P G 701
32K
R709390K
C70850V4. 7
+
R7182SJ10K
R72010K
R70810K
R700150K
R70127K
R7028. 2K
R7034. 7K
R7043. 9K
R7052. 7K
R7061. 5K
R73110K
R73410K
R729150K
R73247K
R73010K
C71350V1
+
R725330
C71450V2. 2
+
R726270K
R7364. 7K
R7384. 7K
R7404. 7K
R7423. 3K
R7433. 3K
C71916V47
+ C7200. 01
R744220
R745220
R74722K
R74922K
R75122K
R75322K
R75410K
R75522K
R766100
R75722K
R75822K
R75922K
R7602. 2K
R76122K
R76222K
R76322K
R76422K
R76522K
A701HS- 0038
C1100. 01
R1085. 6K
R1091K
R110220
R107100
V1022SC2216
C1120. 01
R11182
C1110. 01
L10215UH
C11516V100
+
C1160. 01
C11750V1
+
R113100K
R114100K
C1180. 01
C1190. 01
C120FK0. 022
C1231000
R1211K
T101HA6019
R2011K
R2021. 2K
R204560K
C20316V4. 7
+
C20450V1
+
C2050. 01
C20616V47
+
C20963V15P
G 201S3. 58
C2740. 01
C27616V10
+
R2731/ 4DJ4. 7K
R4082. 2K
R432J R433
1/ 2SJ1K
C433500KK3900
C441200FK0. 39
B425V
L45118UH
VD451EM 01Z
C45135V100 +
C45235V2200
+
R4513. 3K C453
1000
C45450V1
+
C459100FK0. 1
R4521
R45312K
R4543K
R45512K
R45612K
R45739K
C45650V4. 7
+
R4581K
C45735V2200
+
R4601/ 2DJ180 C458
100FK0. 1
R461A1/ 2DJ120
R4591SJ1
C40150V0. 47
+R4012. 2K
C40416V220
+ C4050. 01
C406FK0. 068
C40750V2. 2
+
R4021K
R403330K
R404680
R241100
R242100
R243270
C24416V47
+ C2450. 01
R2321/ 2DJ1. 5K
R23310K
C23150NP1
C6070. 01
C60635V1000
+
XS602TJC3-2A
XP602TJC3-2Y
B90110W8O HM
B90210W8O HM
XS403SCN- 5
C7290. 01
R4001/ 4DJ270
N451LA7840
GND
1
OUTPUT
2
VCC13
NON INPUT
4
INPUT5
VCC26
PUMP O
UT7
R7238. 2K
R7244. 7K
R7221. 5K
R75622K
C403FK0. 47
SW707AUTO
R707680
R72110K
R728470
R1191K
N702CAT24C08P
VCC8
GND7
SCL6
SDA5
1
2
3
4
R74622K
R74822K
R73510K
R770100
B55V
C45016V100
+
R409680
R727470
VD1001TRL- R
V7022SA1015
VD901I N4148
VD911I N4148
VD9211N4148
C45563V10
C61116V10
+ C62116V10
+
C772KK470
R77312K
R77510K
R7798. 2K C734
16V/ 10+
R780560
R63210K
C61850V2. 2
+
V6332SC1815 V631
2SA1015
R63110K
VD6311N4148
R63010K
VD6201N4148
C62850V2. 2
+
V6322SC1815
R77210K
C62525V470
+
C61525V/ 470
+
C61216V100
+ VD6111N4148
VD6121N4148
C61316V100
+
VD6211N4148
C62216V100
+
C62316V100
+VD6221N4148
B612V
B612V
R774100
R7778. 2K
C73316V/ 10
+
R778560
C771KK470R776
12K
C6270. 01
C6170. 01
C63116V/ 100
+
R6111. 5K
R6211. 5K
L90110UH
R2723K
C2790. 01
R12039K
R2442. 7K
R2744. 7K
R2753K
C207FK0. 01 C208
50V0. 47
+R20647K
R20522K
R2072M
C21016V0. 47
+
C140470
C13950V0. 47
+
R127220
C13750V0. 47
+
C13650V1
+
A101
ENV56DB4G 3
IF
33V
5V
SDA
NC
SCL
AGC
5V
C10350V2. 2
+
R1031K
R102100K
R10133KB7
5V
C10116V100
+ C1020. 01
L433ZZ0003
L432YC0008
V4322SD1651
C434160V10
+B1
R4347W3. 3K
L431YC0008
C474250V22
+VD474EU1
R4741FJ1
T471JF0501-92807
R4721FJ1
VD472EU1
C47235V100
+
B425V
R5671. 2K
C57010V470
+
B55V
XS901GZS10-2-108
R4716FJ3. 9
B612V
RL552
VD5521N4148
V8212SC1815
R8224. 7K
R8211K
C82150V1
+
V8012SC1815
R80127K
R803220
C80516V470
+
R80268KR804
100K
B312V
B75V
C80316V470
+
C819220
R41310K
R41410K
C41250V1
+ R4153. 9K
R4128. 2K
VD411EU1
C41125V47
+
C303FK0. 1
C304FK0. 1
R302100K R303
270K
R30410K
R3051K
R30639K
V3012SC1815
RP301B-50K
RP302B-10K
V303D2012
L301AA36
C30635V470
+
R3072. 2K
R3102. 7k
V3022SA1015
C3151000
R3131SJ5. 1
R312DJ5. 6K
R3112. 7K
R30847k
R30956K
C30525V2. 2
R3141/ 2SJ560
R3018. 2K
C30135V47
+
C30235V1000
+
B425V
VD435ERD07-15L
C4351. 6KV8200
C437400NJ0. 033
R4411/ 2SD1K
L441AC41B
C444160V4. 7
+
R4461/ 4W220K
N801
TC4053BP
OX
12
1X13
X COM
14
Y COM
15
VDD16
1Y1
0Y2
1Z3
Z COM
4
OZ
5
INH6
VEE7
VSS8
C9
B10
A11
XS802
VHS
R10104. 7K
R80882
C80616V10 +
R100947K
C81016V10
+
R8264. 7K
C80916V10 +
R8144. 7K
XS801- 1AV2
XS803AV1
B75V
C80116V220
+C8020. 01
W801X
R81882
C81116V10
+
R82582
C8120. 01
B75V
VD8011N4148
R82427K
R8191K
R8238. 2K
R8154. 7K
R8203. 3K
C8040. 01
C515400V0. 022
C501250HM 0. 1
C502250HM 0. 1
L909LJ0107CHA
C5031000KM1000E
C5051000KM1000E
C5041000KM1000E
C5061000KM1000E
C532400KM470S
C533400KM2200S
VD503RM 11C
VD505
RM 11C
C507
400V330
+VD504RM 11C R515
2SJ68K
R5016WDJ220K
N501HPC922
L501JLB1606
L502LJB1606
R5131M
R5141M
FU501T2. 5A250V
U902EW0130KB
R5026WK3. 9
XS501TJC2-2A
V513F6654
12345
R5032SJ68K
C50935V100+
VD512EG 01C
C5162KV220
R5123. 3K
C5140. 01
VD5131N4148
VD5071N4148
L504YC0008
C510FJ470
VD5081N4148
C511FJ1000
R5071. 5K
R5081. 5K
V5012SA1015
VD509HZ15C
R5091K
C512FJ470
VD510EU2
R5118. 2
VD511EU2
R5042SJ0. 1
R51010K
R506FJ680
C5132KV330
L506YC0008
L505YC0008
VD555RU4YX
VD551RU3A
VD554RG P15D
VD4521Z75
T511BCK-130-01
N552L7805CV1 2 3
B7
5VC57210V470
+
C12639
L12115UH
C12518
R122330
C12450V1
+
R104100
R105100
R2681K
V8022SC1815
R83168K
R8331K
C82316V47
+
R83222K
R83482
B312V
R83568KR838
82
R83622K
B312V
R8371K
C82516V47
+
XS801- 2AVout
C0650V4. 7
+C0750V4. 7
+
R02RJ8. 2K
C1650V4. 7
+
C0815nF
R20100
C1050V10
+
R03RJ160
C15100nF
C09
50V10
+
C0150V10
+
R6103K
R6203K
C81316V10
+
B612V
B612V
B612V
R21100
C1450V10+
R800
680
C1347nF
C1916V100
+
C02470nF
C04220nF
C0350V4. 7
+
C0550V10+
CR50V2. 2
+C21
50V10
+C18
16V100
+CL
50V2. 2
+C17
100nF
C2050V10
+C1250V1
+C1150V1
+
B503F58Q01
N641
TDA9850VEI2
Cnr3
Cm4
Cdec5
AGND
6
DGND
7
SDA8
SCL9
Vcc10
COM
P11
Vcap12
Cp113
Cp214
Cph15
Cadj16
CER17
Cmo
18
Css19
Cr20
OUTR
21
Csde22
SAP23
Vref24
Cl25
Cnd26
OUTL
27
MAD
28
Ctw29
Cts30
Cw31
VEO1
Cs32
R012. 2K
C82416V100 +
R6241/ 2W39
T431BCT-10
B218V
XP601TJC3-2Y
XS601TJC3-2A
R270560K
C730470P
C60116V10
+ C60216V10
+C40250V0. 22
+
C21250V1
+
N701LC863232A- 5V57
LNA1
50/ 602
ALARM3
W- VO L4
VO L- L5
VO L- R6
PO WER7
NC8
G ND9
XTAL110
XTAL211
VDD12
KEY I N13
AFT I N14
NC15
NC16
RESET17
FI LT18
CVBS- I N19
V SYNC20
H SYNC21
R O UT22
G OUT23
B OUT24
BLANK25
NC26
SDA027
SCL028
SDA129
SCL130
SAFTY31
S-VHS32
NC33
I R34
SRS O N/ OFF35
WO O FER O N/ O FF36
M UTE37
AV238
AV139
AV/ TV40
V-MUTE41
COM B-FI LTER42
Z101LBN45U
38M
VD412HZ7C1
N101LA76814K
AUDI O OUT1
FM OUT2
PI F AG C3
RF AG C4
VI F I N15
VI F I N26
G ND(I F)7
VCC ( VI F)8
FM FI L9
AFT OUT10
DATA11
CLOCK12
ABL13
R I N14
G I N15
B I N16
BLANK I N17
VCC (RGB)18
R OUT19
G OUT20
B OUT21
AKB I N22
V OUT23
RAM P ALC. FI L24
VCC (H)25
H AFC FI L26
H OUT27
FBP I N28
VCO I REF29
CLO CK OUT30
VCC ( CCD)31
O SD CO NTRAST32
GND (CCD/ H)33
X-RAY34
KI LLER FLT35
APC1 FI L36
FSC O UT37
XTAL38
ACC FI L39
SEL VI DEO O UT40
GND (V/ C/ B)41
EXT VI DEO I N42
VCC (V/ C/ D)43
I NT VI DEO I N44
BLK STRETCH FI L45
VI DEO OUT46
APC FI L47
VCO COI L48
VCO COI L49
VCO FI L50
EXT AUDI O I N51
SI F OUT52
SI F APC FI L53
SI F I N54
C80716V10
+ C80816V10
+
W8041/ 4W15K
C62650V1
+
R625100
C61650V1
+
R615100
V8042SC1815
VD7041N4148
W40810K
VD506
RM 11C
RT501PTH451A7R0Q21
000
RL551
00 0
C4080. 022VD401
I N4148
R9331M
C935250V22
+
V7052SC1815
N705UPC574
V9312SA1015
V7042SC1815
VD436EU2A
VD402I N4148
VD561HZ6C3
N553L7805CV
123
N551L7812CV123
R56610K
R5071. 5K
R562275/ 2A
V5912SC1015
R5911. 2K VD592
1N4148
10KR561
V5522SC1815
R55722K
V555
2SA1015
V4312SC2383-O
VD703HZ4A2
VD5531N4148
N602 LA4287
INT1
GND
2
EXT3
SW4
VOL
5
FLI6
NFB7
GND
8
OUT
9
VCC10
N601 LA4287
INT1
GND
2
EXT3
SW4
VOL
5
FLI6
NFB7
GND
8
OUT
9
VCC10
V8032SC1815
VD900RU3Z
V703
2SC1815
VD3011N4148
10KR596
V5532SC1815
R55722K
VD509HZ15C
68KR593
R59368K
C59150V0. 47
+
C4382KV470
R5451/ 2CK5. 6M
1
611
8
2
10
2
7 1
4
4
2
1
1
1
3
5
9
3
3
NO:M-AM-US-20R21-76814 Edition: 2002.12.30
Circuit Block Diagram
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Picture/Sound IF Amplifier, Video and audio signal
Processing, RGB Output Circuits and H &V Sync pulse
segregation
SAW
Sound Power Amplifier
Main Processor
Infrared Receiver Remote Controller
ROM
Audio/Video In/Out
Horizontal Scan Output
Vertical Scan Output
CRT
Antenna
Tuner
I2C BUS
Circuit Block Diagram
21
Circuit Block Diagram
22
12. Circuit Explanation
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Circuit Explanation
23
2). N101 LA76814K
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Circuit Explanation
24
13. Adjustment
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f. User Remote controller g.
j. 60MHz double trace oscillograph(2 units) k. White balance adjustment instrument
±
Alignment and check:
±
Adjustment: Receive stereo signal (recommended audio: L 300Hz, R: 3KHz). Connect two inputs of double trace oscillograph into XS601, XS602 (note: don’t make XS601, XS602 outputs short.) Press FACTORY button on the service remote controller, enter “ADJUST” service mode. Press “CH+” or “CH-” select “WIDEBAND” item and adjust low frequency separation. (see figure 1) and make it
Adjustment
25
optimal see figure
2 .At last press “CH+” or “CH-” and select “SPECTRAL” item, adjust high frequency separation. (see figure 3) and make it optimal see figure 4 .If effect isn’t good, you can repeat above steps till it is optimal.
Adjustment: Connect voltage meter to +B on main PCB, make +B voltage be 115V±0.3V.
“ ” ”“ ”
“ ”“ ”
AGC ALIGNMENT: Receive a color bar signal, 60dB,NTSC M color bar pattern, and check if there is noise in the picture, if there is noise, press FACTORY button and enter service mode, adjust RF.AGC value and make the noise just disappear, press FACTORY button and exit service mode.
White balance adjustment: Turn TV on, receive white field signal, and make the probe of white balance adjustment instrument touch with top and bottom of screen fully. Check if values of R, G, B are standard, if not, press “FACTORY” button, make “B/W BALANCE” menu display on screen, adjust values of R-BIA, G-BIA, B-IA, R-DRV, G-DRV, B-DRV, make them standard. Press FACTORY button, exit service mode. OSD I2C bus control (LA76810) Varied range S-BRI Sub brightness 0-127 R-BIA Red bias 0-255 G-BIA Green bias 0-255 B-BIA Blue bias 0-255 R-DRV Red drive 0-127 G-DRV Green drive 0-15 B-DRV Blue drive 0-127 C.B/W Cross B/W 0-3
FOCUS ALIGNMENT Receive crosshatch (N system) pattern; Adjust focus-variable resistor on the FBT, make picture is the sharpest.
Adjustment
26
GEOMETRIC ALIGNMENT: Receive the monochrome circle pattern (NTSC system); Check vertical center and horizontal center and H-linearity .if they are not standard, press FACTORY button to enter service mode, and adjust vertical size, vertical linearity, vertical center, horizontal center, make them standard.
Alignment parameter table: Press FACTORY button on service remote controller and enter service mode: 1.Adjustment mode and2. Setting mode;
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Adjustment
44
16. Damageable Parts List Location Material Code Parts Name Type Qt. (unit) Remark XS901 0094300290 Connect housing GZS10-2-AC2-DGV 1 G01 0094600119 Oscillator CSB503F58 1 N641 0094400796 IC TDA9850 1 V301 0094101006 Transistor 2SC1815(Y)------F 15 V432 0094400465 Transistor 2SD1651----B-A 1 V513 0094401093 IC STR-F6654 1 N801 0094400417 IC TC4053BP 1 V V601 0094400527 IC LA4287 2 RT501 0094400452 Resister PTH451A7R0Q21 1 N101 0094400457 IC LA76814K 1 V XS801 0094300172 Connect housing AV6-8.4-14A 1 N451 0094400470 IC LA7840 1 V N702 0094400636 IC CAT24C08P 1 V XS802 0094300173 S-Video terminal SZ4-9-2K 1 N701 0094401090 IC LC863232A-5V57 1 V
17. Information of Resistors and Capacitors
!"! #$�%&� !"! #$�%&� !"! #$�%&� !"! #$�%&� ����RESISTORS & CAPACITORS-PARTS NO.CODE Notes: 1.part numbers are indicated on most mechanical parts.
Please use this part number for parts orders. 2.The unit of resistance is (ohm).K=1000 ,M=1000K 3.The unit of capacitance is F(microfarad). 1pF=10-6 F.
Numbering system of Capacitor
Example CL42 ----- 17 ---- 50V ---- 2F4 ---- 104 * ---- Z Type Voltage Value (pF) Tolerance CL21X ---- 100V ---- 223 * ---- J Type Voltage Value (pF) Tolerance CL110X ---- 25V ---- 100 F 20%
Type Voltage Value Tolerance * 104 =10 104 223=22 103
Numbering system of resistor
Example RY17S ---- 2W ---- 390 ---- J ---- 05-E-A Type Wattage Value( ) Tolerance RS11 ---- 1/2W ---- 1.8K ---- K Type Wattage Value Tolerance
Damageable Parts List
45
ABBREVIATION OF PART NAME AND DESCRIPTION
RESISTOR
CAPACITOR
Terminal view of transistors
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PART NAME & DESCRIPTION TYPE ALLOWANCE
C Ceramic J 5% T Ceramic K 10% L Film L 15% D Electrolytic M 20% A Tantalum P +100%-0% Z +80%-0%
PART NAME & DESCRIPTION TYPE ALLOWANCE
T Carbon F 1% S Solid J 5% J Metal K 10% Y Oxide M 20% F Fuse G 2%
E C B
B CE
KSC2331-YTA
BCE
KSR1010TAKSR2010TA
BC548-CTA
E BC
C BE
KSC815-YTAKSA539-YTA
E C B
2SD18887YD