Atec Panda 2188, Panda 2168 Schematic

ATEC-PANDA

Type 2188

Type 2168

54 cm Color TV Set

Service Manual

Contents

1. Overview………………………………………………………………………………………2

2. Chassis Installation and Parts List………………………………………………………………3

3. Cabinet Parts List and Installation……………………………………………………………10

4. Signal Flow Diagram…………………………………………………………………………14

5. Adjustment Test…………………………………………………………………………………15

2

5.1 I

5.2 Complete set adjustment test……………………………………………………………18

6. Trouble Shooting……………………………………………………………………………20

Overview of IC Function

7.

8. IC and Voltage of Transistor…………………………………………………………………29

9. Resistance to Earth of Some Circuits………………………………………………………32

Waveform Diagrams

10.

Appendix 1 Explanation of Parts No.……………………………………………………………35

Appendix 2 Difference of CRT
Appendix 3 Circuit diagram………………………………………………………………………51
Appendix 4-1 Fig. PCB touch side…………………………………………………………………52
Appendix 4-2 Wire arrangement on PCB welding side…………………………………………53

C bus adjustment test…………………………………………………………………15

……………………………………………………………………

…………………………………………………………………………

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24

34

50

— 1 —

1. Overview

2

This TV set Consist of main chip LA76814 controlled by Sanyo I

LA76814 is IC dedicated for NTSC, integrated following circuits inside: amplifying and detecting in

medium frequency, AFC, demodulating of sound medium frequency, brightness delay-line, filtering

and demodulating of color signal, processing of horizontal small signals. In addition to the +B (B1)

voltage of chassis controlled by potentiometer, others are controlled by CPU through the bus.

Functional feature:

1. Frequency Tuning (FS) 181 channels System (North & South America)

2. Receiving bands•AIR/STD/HRC/IRC

3. Color System•NTSC-M

4. Green Power Supply, Low STAND-BY Energy Consumption

5. X-Radiation Protection

6. One AV Input (Rear)

7. On Screen Display (OSD):Three Languages: English / Spanish / Portuguese

8. All Functions Remote Control

9. Easy release of all channels with a single key

10. Closed Caption Decoder with CC1 , CC2 , T1 and T2 decoder capabilities

11. Caption only on Mute optionally selectable

12. Mute

13. Half Mute (50% Volume pressinga single key)

14. Without releasing MUTE Volume can be diminished

15. Smart Picture key: SOFT , STANDARD , SHARP and PERSONAL

16. Quick View key

17. Time-related features: (Alarm, Timer On/Off , Sleep) independently selectable

18. LOGO screen at Start Up with showing time selectable in TEST mode

20. Favorite Channels

21. MESSAGE feature

22. ALARM Feature up to 99 minutes 59 seconds

23. Scan

24. Volume Plus feature in all 181 channels independently

25. Power ON by pressing any key in the front panel

26. Blue Back, Noise Reducing, Black Stretch , RG gamma correction, Blue gamma correction

optionally selectable by the user

27. Autosearch

28. Call (Display) key in the Remite Control (RC) showing Channel Status, Alarm Time if

activated ,Sleep Time if activated, Favorite Channels and Clock if running

C bus and CPU LC863232A.

— 2 —

2. Installation and Parts List of Inner Works

Position Type Parts no. Position Type Parts no.

number Carbon-film number Carbon-film

resistor

R105 1/6W 22K RDB223J-NAARD R157 1/6W 12K RDB123J-NAARD

R106 1/6W 22K RDB223J-NAARD R160 1/6W 470 RDB471J-NAARD

R108 1/6W 390K RDB394J-NAARD R163 1/6W 33K RDB333J-NAARD

R109 1/6W 8.2K RDB822J-NAARD R165 1/6W 100K RDB104J-NAARD

R110 1/6W 8.2K RDB822J-NAARD R166 1/6W 22K RDB223J5NBAND

R111 1/6W 1.5K RDB152J-NAARD R190 1/6W 12K RDB123J-NAARD

R112 1/6W 8.2K RDB822J-NAARD R192 1/6W 39K RDB393J-NAARD

R113 1/6W 390K RDB394J-NAARD R202 1/6W 33K RDB333J-NAARD

R114 1/6W 1M RDB105J-NAARD R203 1/6W 100K RDB104J-NAARD

R115 1/6W 100 RDB101J-NAARD R204 1/6W 100K RDB104J-NAARD

R116 1/6W 4.7K RDB472J-NAARD R205 1/6W 100 RDB101J-NAARD

R117 1/6W 10K RDB103J-NAARD R206 1/6W 100 RDB101J-NAARD

R118 1/6W 27K RDB273J-NAARD R207 1/6W 120 RDB121J-NAARD

R119 1/6W 10K RDB103J-NAARD R208 1/6W 1K RDB102J-NAARD

R120 1/6W 1K RDB102J-NAARD R215 1/6W 330 RDB331J-NAARD

R121 1/6W 1K RDB102J-NAARD R216 1/6W 270 RDB271J-NAARD

R122 1/6W 1K RDB102J-NAARD R226 1/6W 8.2K RDB822J-NAARD

R123 1/6W 1K RDB102J-NAARD R314 1/6W 1K RDB102J-NAARD

R124 1/6W 1K RDB102J-NAARD R331 1/6W 3.3K RDB332J-NAARD

R125 1/6W 1K RDB102J-NAARD R345 1/6W 15K RDB153J-NAARD

R126 1/6W 1K RDB102J-NAARD R346 1/6W 10K RDB103J5NBAND

R127 1/6W 1K RDB102J-NAARD R373 1/6W 22K RDB223J-NAARD

R128 1/6W 220 RDB221J-NAARD R402 1/6W 3.3K RDB332J-NAARD

R129 1/6W 220 RDB221J-NAARD R405 1/6W 560 RDB561J-NAARD

R134 1/6W 1K RDB102J-NAARD R406 1/4W 1 RDC1R0J-NABRD

R135 1/6W 100 RDB101J-NAARD R407 1/2W 330 RDD331J4NBCND

R137 1/6W 4.7K RDB472J-NAARD R409 1/6W 4.7K RDB472J-NAARD

R138 1/6W 4.7K RDB472J-NAARD R410 1/6W 4.7K RDB472J-NAARD

R139 1/6W 100 RDB101J-NAARD R411 1/6W 18K RDB183J-NAARD

R140 1/6W 100 RDB101J-NAARD R412 1/6W 22K RDB223J-NAARD

R141 1/4W 560 RDC561J-NABRD R431 1/2W 1.2K RDD122J4NBCND

R142 1/6W 100K RDB104J-NAARD R432 1/2W 680 RDD681J4NBCND

R143 1/6W 10K RDB103J-NAARD R501 1/6W 2K RDB202J-NAARD

R152 1/6W 1.2K RDB122J-NAARD R502 1/6W 5.6K RDB562J-NAARD

R153 1/6W 1.8K RDB182J-NAARD R504 1/6W 1K RDB102J-NAARD

R154 1/6W 2.7K RDB272J-NAARD R504A 1/6W 680 RDB681J6NBAND

R155 1/6W 3.9K RDB392J-NAARD R506 1/2W 1K RDD102J4NBCND

resistor

R156 1/6W 6.8K RDB682J-NAARD R508 1/2W 10K RDD103J4NBCND

— 3 —

Position Type Parts no. Position Type Parts no.

number Carbon-film number Carbon-film

resistor

R509 1/6W 10K RDB103J-NAARD R764 1/6W 4.7K RDB472J-NAARD

R514 1/4W 1K RDC102J-NABRD R807 1/6W 100 RDB101J-NAARD

R526 1/6W 220K RDB224J-NAARD R812 1/6W 100K RDB104J-NAARD

R601 1/2W 220K RDD224J5NBCND R818B 1/6W 6.8K RDB682J-NAARD

R605 1/6W 4.7K RDB472J-NAARD R902 1/2W 1.8K RDD182J5NBCND

R606 1/6W 120K RDB124J-NAARD R905 1/6W 270 RDB271J2NBAND

R607 1/6W 10 RDB100J-NAARD R912 1/2W 1.8K RDD182J4NBCND

R608 1/6W 10 RDB100J-NAARD R915 1/6W 270 RDB271J2NBAND

R610 1/6W 3K RDB302J-NAARD R922 1/2W 1.8K RDD182J4NBCND

R612 1/6W 1K RDB102J-NAARD R925 1/6W 270 RDB271J2NBAND

R613 1/4W 22 RDC220J-NABRD R981 1/6W 2.7K RDB272J2NBAND

R615 1/6W 820 RDB821J-NAARD R982 1/6W 2.7K RDB272J2NBAND

R639 1/2W 47K RDD473J4NBCND R983 1/6W 2.7K RDB272J2NBAND

R639B 1/2W 51K RDD513J4NBCND R985 1/6W 33 RDB330J2NBAND

R640 1/4W 2.4K RDC242J-NABRD RVD701 1/6W 1.5K RDB152J-NAARD

R641 1/6W 220 RDB221J5NBAND R2001 1/6W 10K RDB103J-NAARD

R642 1/6W 1K RDB102J-NAARD R2002 1/6W 10K RDB103J-NAARD

R643 1/6W 10K RDB103J-NAARD R2003 1/6W 8.2K RDB822J-NAARD

R644 1/6W 47K RDB473J-NAARD R2004 1/6W 10K RDB103J-NAARD

R645 1/6W 470 RDB471J-NAARD R3000 1/6W 100 RDB101J-NAARD

R651 1/6W 22K RDB223J-NAARD R3001 1/6W 100 RDB101J-NAARD

R701 1/6W 100 RDB101J-NAARD

R702 1/6W 100 RDB101J-NAARD
R703 1/6W 100 RDB101J-NAARD

R704 1/6W 10K RDB103J-NAARD R951 2W 3.9 RFF3R9J5ACDNF

R705 1/6W 100 RDB101J-NAARD

R706 1/6W 100 RDB101J-NAARD

R708 1/6W 1K RDB102J-NAARD
R709 1/6W 33 RDB330J-NAARD

R713 1/6W 560K RDB564J-NAARD R617 1/2W 120K RGDX124K504NZ

R748 1/6W 1.2K RDB122J-NAARD R618 1/2W 120K RGDX124K504NZ

R749 1/6W 1K RDB102J-NAARD R619 1/2W 24M RGDX246K504NZ

R754 1/6W 1K RDB102J-NAARD

R755 1/6W 22K RDB223J-NAARD
R758 1/6W 12K RDB123J-NAARD

R759 1/6W 12K RDB123J-NAARD R403 1/6W 10K RJB103F-NAARD

R762 1/6W 1.2K RDB122J-NAARD R757 1/6W 4.7K RJB472F-NAARD

resistor

Fuse resistor

Glass grazed

resistor

Metal film

resistor

— 4 —

Position Type Parts no. Position Type Parts no.

number Metal oxide number Ceramic

R104 2W 8.2K RSF822J7ACDND C109 50V 0.01u CKF103Z1FA-FC

R229 2W 56 RSF560J7ACDND C110 50V 0.01u CKF103Z1FA-FC

R404 1W 1.5 RSE1R5J5DCCND C114 50V 560P CKF561K1BA-FC

R503 1W 270 RSE271J4ACCND C115 50V 560P CKF561K1BA-FC

R507 2W 270 RSF271J7ACDND C116 50V 560P CKF561K1BA-FC

R510 1W 1K RSE102J5ACCND C117 50V 560P CKF561K1BA-FC

R525 1W 12K RSE123J4ACCND C118 50V 100P CCF101J1CA-FC

R600 1W 1K RSE102J4ACCND C119 50V 0.01u CKF103Z1FA-FC

R604 3W 47K RSG473J7ACEND C124 50V 0.01u CKF103Z1FA-FC

R604B 3W 47K RSG473J7ACEND C127 50V 0.01u CKF103Z1FA-FC

R630 2W 56 RSF560J7ACDND C128 50V 220P CCF221J1CA-FC

R761 1W 4.7 RSE4R7J4ACCND C129 50V 220P CCF221J1CA-FC

R901 2W 15K RSF153J5ACDND C137 50V 100P CCF101J1CA-FC

R911 2W 15K RSF153J5ACDND C138 50V 100P CCF101J1CA-FC

R921 2W 15K RSF153J5ACDND C139 50V 15P CCF150J1CA-FC

R931 1/2W 2.2 RSD2R2J4ABBND C202 50V 0.01u CKF103Z1FA-FC

C204 50V 0.01u CKF103Z1FA-FC

R513 5W 3.9 RWH3R9K3AK-NR C303 50V 8P CCF8R0D1CA-FC

R602 RX27-3A RWH1R8K5AF-NR C304 50V 1000P CKF102K1BA-FC

-5W-1.8 C318 50V 0.01u CKF103Z1FA-FC

R603 5W 2.2K RWH222J5AQ-NR C403 50V 1000P CKF102K1BA-FC

R609 2W 0.22 RWFR22K3AK-NR C501 50V 0.01u CKF103Z1FA-FC

C506 500V 3900P CKP392K1BA-FC

C508 500V 1000P CKP102K1BA-FC

VR601 20KB VDAAA203A001H C600 2KV 470P CKX471K2RL-ND

C603 1KV 1000P CKW102K2BL-ND

C605 1KV 1000P CKW102K2BL-ND

C103 50V 100P CCF101J1CA-FC C609 2KV 470P CKX471K2RL-ND

C104 50V 15P CCF150J1CA-FC C610 2KV 680P CKX681K2RL-ND

C105 50V 15P CCF150J1CA-FC C611 50V 100P CCF101J1CA-FC

C107 50V 0.01u CKF103Z1FA-FC C615 ~400V 2200P CKMX222M302ND

C108 50V 0.01u CKF103Z1FA-FC C616 ~400V 220P CKMX221K302ND

resistor capacitor

Wire resistor

Potentiometer

Ceramic

capacitor

C226 50V 0.01u CKF103Z1FA-FC
C301 50V 0.01u CKF103Z1FA-FC

C522 2KV 470P CKX471K2RL-ND

C604 1KV 1000P CKW102K2BL-ND

C606 1KV 1000P CKW102K2BL-ND

C607B 2KV 1000P CKX102K2R L-ND

— 5 —

Position Type Parts no. Position Type Parts no.

number Ceramic number Electrolytic

C618 50V 4700P CKF472K1BA-FC C309 50V 10u CEF100M1ACAFP

C621 1KV 470P CKW471K2RL-ND C317 25V 1000u CED102M1AMHNP

C623 1KV 470P CKW471K2RL-ND C320 50V 1u CEF1R0M1ACAFP

C625 1KV 470P CKW471K2RL-ND C367 50V 10u CEF100M1ACAFP

C627 2KV 470P CKX471K2RL-ND C368 50V 2.2u CEF2R2M1ACAFP

C629 1KV 1000P CKW102K2BL-ND C404 35V 1000u CEE102M1AMHNP

C641 50V 120P CCF121J1CA-FC C405 35V 100u CEE101M1ACCFP

C698 ~400V 220P CKMX221K302ND C406 50V 1u CEF1R0M1ACAFP

C706 50V 0.01u CKF103Z1FA-FC C408 50V 3.3u CEF3R3M1ACAFP

C712 50V 0.01u CKF103Z1FA-FC C414 35V 1000u CEE102M1AMHNP

C719 50V 100P CCF101J1CA-FC C502 25V 100u CED101M1AMBNP

C753 50V 16P CCF160J1CA-FC C504 50V 1u CEF1R0M1ACAFP

C755 50V 1000P CKF102K1BA-FC C507 35V 47u CEE470M1ACCFP

C777 50V 100P CCF101J1CA-FC C515 160V 2.2u CEH2R2M1ACCFP

C903 50V 100P CCF101J1CL-NC C518 160V10u CEH100M1EMENP

C904 50V 470P CKF471K1BL-NC C607 400V 220u CEM221M3AESNK

C913 50V 100P CCF101J1CL-NC C613 25V 100u CED101M1AMBNP

C914 50V 470P CKF471K1BL-NC C617 50V 33u CEF330M1ACAFP

C923 50V 100P CCF101J1CL-NC C622 25V 2200u CED222M2A MKNP

C924 50V 470P CKF471K1BL-NC C624 16V 470u CEC471M1ACCFP

C941 2KV 2200P CKX222K2BL-ND C626 25V 1000u CED102M1AMHNP

C628 250V220u CEH221M2EMLNP

C101 50V 1u CEF1R0M1ACAFP C635 50V 2.2u CEF2R2M1ACAFP

C106 10V 470u CEB471M1AMCNP C636 10V 1000u CEB102M1AMENP

C112 50V 2.2u CEF2R2M1ACAFP C645 16V 2200u CEC222M1AMHNP

C120 16V 47u CEC470M1ACAFP C647 16V 47u CEC470M1ACAFP

C123 25V 100u CED101M1ACBFP C701 50V 1u CEF1R0M1ACAFP

C125 16V 2200u CEC222M1AMHNP C702 50V 1u CEF1R0M1ACAFP

C126 50V 10u CEF100M1ACAFP C703 50V 1u CEF1R0M1ACAFP

C205 16V 100u CEC101M1AMBNP C704 50V 1u CEF1R0M1ACAFP

C206 50V 1u CEF1R0M1ACAFP C705 50V 1u CEF1R0M1ACAFP

C209 50V 1u CEF1R0M1ACAFP C707 16V 47u CEC470M1ACAFP

C210 50V 0.47u CEFR47M1ACAFP C713 16V 220u CEC221M1AMCNP

C213 50V 1u CEF1R0M1ACAFP C714 50V 2.2u CEF2R2M1ACAFP

C218 50V 3.3u CEF3R3M1ACAFP C715 16V 100u CEC101M1ACBFP

C219 16V 47u CEC470M1ACAFP C720 50V 1u CEF1R0M1ACAFP

capacitor capacitor

Electrolytic

capacitor

C630 35V 330u CEE331M1AMFNP

C632 16V 470u CEC471M1ACCFP

— 6 —

Position Type Parts no. Position Type Parts no.

number Electrolytic number

capacitor Inductor

C752 50V 2.2u CEF2R2M1ACAFP L101 39uH-K LBB390K----RG

C754 50V 0.47u CEFR47M1ACAFP L203 10uH-K LBB100K----RG

C757 50V 10u CEF100M1ACAFP L334 47uH-K LAB470K1---NJ

C773 16V 470u CEC471M1ACCFP
C774 16V 1000u CEC102M1AMFNP

C811 50V 1u CEF1R0M1ACAFP FB501 M-COIL LEA001-5---NJ

C812 50V 10u CEF100M1ACAFP FB502 M-COIL LEA001-5---NJ

C931 250V 22u CEK220M1EMHNP FB503 M-COIL LEA001-5---NJ

C2001 50V 10u CEF100M1ACAFP FB610 M-COIL LEA001-2---NJ

C2002 50V 10u CEF100M1ACAFP FB611 M-COIL LEA001-2---NJ

FB612 M-COIL LEA001-6---NJ

FB612A 6*5*1.5mm LEE004-----NJ

FB612B 6*5*1.5mm LEE004-----NJ

C111 100V 0.033u CFG333K1-L-NW FB624B 6*5*1.5mm LEE004-----NJ
C113 63V 0.1u CAY104K1-K-FJ FB625A 6*5*1.5mm LEE004-----NJ

C201 100V 0.022u CFG223K1-L-NW FB625B 6*5*1.5mm LEE004-----NJ

C207 63V 0.1u CAY104K1-K-FJ L502 M-COIL LEA001-3---NJ

C302 100V 0.01u CFG103J1-L-NW LW545 M-COIL LEA001-3---NJ

C305 100V 0.01u CFG103J1-L-NW
C319 100V 4700P CFG472K1-L-NW
C401 63V 0.47u CAY474K1-L-NJ

C402 50V 0.22u CAY224K1-L-NJ L601 Linearity filter LG-003-----NL

C407 100V 0.1u CFG104K1-L-NW

C409 100V 0.022u CFG223K1-L-NW

C505 100V 0.015u CFG153J1-L-NW
C509 100V 0.056u CFG563K1-L-NW

C511 1600V 9100P CMZ912J8-K-NS L501

C514 250V 0.39u CMK394J8-K-NS

C519 63V 0.1u CAY104K1-K-FJ

C601 ~275V 0.22u CMNX224M801NP
~275V 0.22u CMNX224M801NS

C608 ~250V 0.047u CMKX473K401NE L202 Matching inter LTC001-N---NV

C612 63V 0.1u CAY104K1-K-FJ medium frequency

C636B 63V 0.1u CAY104K1-K-FJ L204 45.75MHZ LTC020-C---NV

C642 63V 0.1u CAY104K1-K-FJ
C643 100V 0.033u CFG333K1-L-NW

C750 100V 0.047u CFG473K1-L-NW PS601 MI73-18 DH2180M001-NC

Film capacitor

FB624A 6*5*1.5mm LEE004-----NJ

Non-standard

inductor

Linearity filter

Horizontal linearity

Horizontal linearity correcting coil

Inter medium frequency coil

Themistor (PTC)

LF-015-2---NJ

— 7 —

Position Type Parts no. Position Type Parts no.

number number

LED Diode

VD112 FG313003 DLB52004---NA VD622 RGP10D DRRGP10D-01ND
VD623 RGP10D DRRGP10D-01ND

Diode

VD102 MTZJ5R6B DZMTZJ5R6B-RR VD625 RGP10D DRRGP10D---ND

VD103 MTZJ3.6A DZMTZJ3R6A-RR VD633 MTZJ15C DZMTZJ15C--RR
HZ4A2 DZHZ4A2---RH VD641 RGP10J DRRGP10J-01ND

VD104 1N4148-T77 DR1N4148---RR VD643 1N4148-T77 DR1N4148---RR
1N4148-T77 DR1N4148---RH 1N4148-T77 DR1N4148---RH

VD105 1N4148-T77 DR1N4148---RR VD644 RGP10D DRRGP10D-01ND
1N4148-T77 DR1N4148---RH VD645 MTZJ6R2C DZMTZJ6R2C-RR
VD106 MTZJ3.6A DZMTZJ3R6A-RR HZ6C3 DZHZ6C3----RH

HZ4A2 DZHZ4A2---RH VD702 1N4148-T77 DR1N4148---RR

VD107 MTZJ5R6B DZMTZJ5R6B-RR 1N4148-T77 DR1N4148---RH

VD108 1N4148-T77 DR1N4148---RR VD703 1N4148-T77 DR1N4148---RR
1N4148-T77 DR1N4148---RH 1N4148-T77 DR1N4148---RH

VD111 1N4148-T77 DR1N4148---RR VD704 1N4148-T77 DR1N4148---RR

1N4148-T77 DR1N4148---RH

VD114 MTZJ5.1B DZMTZJ5R1B-RR VD706 1N4148-T77 DR1N4148---RR
HZ5C1 DZHZ5C1---RH 1N4148-T77 DR1N4148---RH

VD2001 RGP10D DRRGP10D-01ND VD721 MTZJ7.5C DZMTZJ7R5C-RR
VD2002 MTZJ12A DZMTZJ12A--RR HZ7C2 DZHZ7C2----RH
HZ11C2 DZHZ11C2---RH VD809 MTZJ5.1B DZMTZJ5R1B--RR
VD401 RGP10D DRRGP10D-01ND HZ5C1 DZHZ5C1---RH

VD501 MTZJ8.2C DZMTZJ8R2C-RR VD981 1N4148 DR1N4148---NR

HZ9A3 DZHZ9A3----RH

VD504 RGP10J DRRGP10J-02ND
VD525 BYD33G-T DRBYD33G---BP

VD603 TTVR4J DRTTVR4J-01NZ FL201 M1967 XFS031-----NB

VD604 TTVR4J DRTTVR4J-01NZ

VD605 TTVR4J DRTTVR4J-01NZ

VD606 TTVR4J DRTTVR4J-01NZ X701 3.58MHz XX-012---01NL

VD609 1N4148-T77 DR1N4148---RR X101 32KHz XX-015-----NW

1N4148-T77 DR1N4148---RH

VD610 RGP10D DRRGP10D-01ND

VD611 RGP10J DRRGP10J---NG SW601 KDC-A04-2 KPW12HL011--D

VD612 RGP10J DRRGP10J---NG
VD614 RGP10D DRRGP10D-02ND

VD621 RGP15D DRRGP15D-01ND F601 250V 3.15A FBA3154S02C-A

VD624 BYW95C DRBYW95C---BP

1N4148-T77 DR1N4148---RH

1N4148 DR1N4148---NH

SAW Filter

Crystal oscillator

Power switch

Fuse

— 8 —

Position Type Parts no. Position Type Parts no.

number number

Transistor Push switch

V102 2PA1015G Q2PA1015-GNF- SW101 7.5mm KTA11VA004--G(Y)

V103 2PC1815G Q2PC1815-GNF- SW102 7.5mm KTA11VA004--G(Y)

V107 2PC1815G Q2PC1815-GNF- SW103 7.5mm KTA11VA004--G(Y)

V108 2PA1015G Q2PA1015-GNF- SW104 7.5mm KTA11VA004--G(Y)

V114 2PC1815G Q2PC1815-GNF- SW105 7.5mm KTA11VA004--G(Y)

V203 2PA1015G Q2PA1015-GNF- SW106 7.5mm KTA11VA004--G(Y)

V302 2PC1815G Q2PC1815-GNF-
V501 KSC23830 QKSC2383-0NF-

Socket connector

V502 KSD5702 QKSD5702--BN- XS601 TJC1-2A GAAV2001----Y

V604 2PC1815G Q2PC1815-GNF- HE TJC2-1A GABV1002----Y

V613 STP6NC60 QSTP6NC60--N- XS602 TJC2-2A GABV2001----N

V642 MCR22-6 QMCR22-6---G- DY TJC2-5A GABV5001----Y

V643 2PC1815G Q2PC1815-GNF- XS151 TJC3-2A GACV2001----Y

V701 2PC1815G Q2PC1815-GNF- KP TJC3-5A GACV5001----Y

V901 2SC2482 Q2SC2482--NN- XS3101 TJC3-6A GACV6001----Y

KSC2330 KQ TJC3-6A GACV6002----Y

V911 2SC2482 Q2SC2482--NN-

KSC2330

V921 2SC2482 Q2SC2482--NN- XS901 CRT Socket GBAVL007----A

KSC2330

XS801 AV terminal GBBH2-02----Y

IC

VD110 CW574CS NCW574CS---N- TPAGC Test probe GABV1001----Y

N103 HS0038B NHS0038B---N-

V640 KA431Z NKA431Z----F-

N602 KA7805 NKA7805----N-

Transformer

N603 KA7812 NKA7812----N- T501 Horizontal drive TD-0004----0L

N102 KS24C04I NKS24C04---N-I T502
24LC04BP N24LC04BP--N- T601

AT24C04 NAT24C04---N-

N201 LA76814 NLA76814---N-

N401 LA7840 NLA7840----N- A101

N101

LC863232A-5V16

NLC863232A-NA

Fly Back Transformer

Power supply transformer TM-0047----0L

FS Tuner

Frequency combined screw thread

TF-0058----1D

BXATB007F---H

N604 LTV817C NLTV817C---N-

N601 MC44608P75 NMC44608P75N- F501A Fuse clamp MB0X0011---G8

N304 TDA7056B NTDA7056B--N- F501B Fuse clamp MB0X0011---G8

— 9 —

3. Cabinet Part list and Installation of Housing

The part list and structural installation of cabinet of Type 2188 and 2168 are respectively

described as follows:

3.1 The part list and structural installation of cabinet of Type 2188

Partial list of Type 2188 Cuban cabinet

1• Front Case
2• Loudspeakers (2)

Tap screws ST4X12 (8)

3• Trademark
4• Elastic engaged ring (2)
5• Combined button

Tap screws ST3X12 (2)

6• Lens

7• Transparent window
8• Optical conductor

Tap screws ST3X12 (2)

— 10 —

9• Power switch
10• Press spring
11• Supported blocks M6 (4)

Tap screws ST4X20 (12)

12• Nuts with quincunx washer•4•
13• combined nuts•4•
14• Support of Fly Back Transformer

Tap screws ST4X12 (1)

Tap screws ST4X16 (1)

15• Rear cover
16• Mark Label on rear cover

Structural installation

Rear cover Remove

1. Pull out power cord from power

socket.

2. Remove nine screws as the figure 1

shown.

3. Gently pull out the rear cover from

the front cabinet.

Chassis Remove

1. Remove the rear cover.

2. Discharge the EHT mouth of tube at

first, and remove the EHT cap, gently

pull out the CRT board, pull out the

degauss coil socket, deflecting wire

plug, loudspeaker plug, grounding

conductor socket of tube, and clips of

power cord.

3. Carefully pull out the chassis from

the front cabinet.

Tube Remove

War nin g:

Don’t move the deflecting coil and

magnetic body on the neck of tube,

must carefully keep those parts in good

condition, except the CRT is damaged.

The CRT surface discharge should be

made before disassembling.

1. Remove chassis.

2. Put the front cabinet with tube

downward, lay it down on a soft

table-board.

3. Unscrew four combined nuts on

ear-ring of tube with a special socket

spanner, carefully handle out the tube

from front cabinet.

4. Install the tube according to the

opposite procedure of that mentioned

above. properly install the degauss coil

and grounding conductor of tube onto

the tube as fig. 2 shown.

— 11 —

3.2 The part list and structural installation of cabinet of Type 2168

Partial list of Type 2168 Cuban cabinet

1• Front cabinet

2• Loudspeakers (2)

Tap screws ST4X12 (8)

3• Trademark
4• Elastic engaged ring (2)
5• Combined button

Tap screws ST3X10 (3)

6• Guide light beam

Tap screws ST3X10 (2)

7• Transparent window
8• Power switch

9• Press spring

10• Rubber gasket (4)
11• Metal gasket (4)
12• Combined nuts5X40•4•
13• Rear cover
14• Support of high voltage package

Tap screws ST4X12 (1)

Tap screws ST4X16 (1)

15• Hook of power cord
16• Mark label on rear cover

— 12 —

Structural installation

Rear cover Remove

1. Pull out power cord from power

socket

2. Remove 10 screws as the fig. 1

shown.

3. Gently pull out the rear cover from

the front case.

Chassis disassembly

1. Remove the rear cover.

2. Discharge the EHT mouth of tube at

first, and remove the EHT cap, gently

pull out the CRT board, pull out the

degauss coil plug, deflecting wire

socket, loudspeaker plug, grounding

conductor socket of tube, and clips of

power cord.

3. Carefully pull out the Chassis from

the front case.

CRT disassembly

War nin g:

Don’t move the deflecting coil and

magnetic body on the neck of tube,

must carefully keep those parts in good

condition, except the CRT is damaged.

The CRT surface discharge should be

made before disassembling.

1. Remove chassis.

2. Put the front case with tube

downward, lay it down on a soft

table-board.

3. Unscrew four combined nuts of

ear-ring on tube with a special socket

spanner, carefully handle out the tube

from front case.

4. Install the tube according to the

inverse procedure of that mentioned

above. properly install the degauss coil

and grounding conductor of tube onto

the tube as fig. 2 shown.

— 13 —

4. Signal flow Diagram

Y
N

A

2

This TV set Consist of main chip LA76814 controlled by Sanyo I

LA76814 is IC dedicated for NTSC, integrated following circuits inside: amplifying and detecting

in intermedium frequency, AFC, demodulating of sound intermedium frequency, brightness delay-line,

filtering and demodulating of color signal, processing of horizontal-vertical small signals.

TDA7056B is used for power amplifier of sound signal.

LA7840 is used for vertical power amplifier.

The detailed signal flow diagram is shown as follows:

TUNER

SAW

V IN EXT AUDIO IN

RF AGC

BAND1
BAND2

N101 CPU

LA8632XXX

H V

SD

SCL

R/G/B OUT

VEDIO OUT EXT V IN

SDA
SCL
RGB_IN
R/G/B/OUT

SELECT V OUT

N201 LA76814

SECAM R-

SECAM B-Y IN

POWER

UNIT

117V

26V

15V

180V

5V

V IN

N401

LA7840

H IN

H OUT

N304

TDA7056B

DY

Signal flow diagram

Signal block diagram

C bus and CPU LC863232A .

I

CRT PCB

SCREEN/

FOCUS

CRT

EHT

V I

A I

— 14 —

5. Adjustment Test

5.1 I2C Bus Adjustment Test

5.1.1 Method of access bus adjustment test menu

Using remote controller, press “MUTE”, at same time presses “MENU” on Front cabinet “TEST”

characters can display on the TV set screen, i.e. the bus adjustment status has been entered, then press

“0”~”9” numeric key on the remote controller, and into corresponding adjustment menu. After

adjustment, exit the adjustment status according the same method. In addition, in case of normal use of

TV set, short-circuited the jumper W325 and W326 can enter the status “TEST”.

5.1.2 Explanation of adjustment test menu

[M0] MENU

• When enter MENU0 adjustment test menu, CPU will automatically

set “Picture” to status of “Standard”, and close “Picture enhancement” setting.

Description:

TEST SIGNAL=0, receive TV signals.

TEST SIGNAL=1, receive white signals produced inside of CPU.

TEST SIGNAL=2, receive gray signals produced inside of CPU.

TEST SIGNAL=3, receive black signals produced inside of CPU.

TEST SIGNAL=4, receive pane and cross signals produced inside of CPU.

SOUND TRAP used for fine adjustment of sound trap frequency.

WOOFER for woofer control, ON is available.

TEST SIGNAL 0
SOUND TRAP 0
CPU VOLUME 1
WOOFER
OFF

MENU0

[M1] MENU

• MENU 1 setting

·When enter MENU1 adjustment test menu, CPU will automatically

set “Picture” to status of “Standard”, and close “Picture enhancement” setting.

Description:

·LA76814: when LA76814 used as main chip, set this item to ON.

·PAL-M/PAL-N/NTSC: When LA 76812 used as main chip, the

color system is selected.

·ENGLISH/ESPANOL/PORTUGUES: for screen language

selection: English/Espanol/ Portuguese.

[M2] MENU

• MENU 2 setting

·When enter MENU2 adjustment menu, CPU will automatically

set “Picture” to status of “Standard”, and close “Picture enhancement” setting .

Description:

·AV2: set ON to available.

·S-VIDEO: set ON to available.

OSD-CONT: Set the contrast of OSD.

·

·WIDE/ZOOM: set the size of zoom.

LA76814 ON

MENU1

PAL _ M O FF
PAL - N

OFF

NTSC OFF
ENGLISH ON
ESPANNOL ON
PORTUGUES ON

MENU2
AV2 OFF
S-VIDEO OFF
START-ON OFF
OSDCONT 1
WIDE 20
ZOOM 95

— 15 —

[M3] MENU

• MENU3 for vertical and horizontal circuits adjustment test, about

the method of adjustment test, see “5 Complete set adjustment test”.

·H-PHASE: adjustment test item of picture horizontal center.

·V-POSI: adjustment test item of picture vertical center.

·V-SIZE: adjustment test item of picture vertical amplitude.

·V-LIN: adjustment test item of picture vertical scan Non-linearity.

·V-SC: adjustment test item of picture vertical S calibration.

·OSD H DISPLAY: adjustment test item of D horizontal display

position .

[M4] MENU

•MENU4 for RF-AGF adjustment test, about the method of

adjustment test, refer to “5 Complete set adjustment test”.

·RF AGC: for RF-AGC adjustment test.

[M5]MENU

MENU5 for adjustment test of Screen/White balance/Sub

•

brightness, about the method of adjustment test, see “5 Complete set

adjustment test”.

When enter MENU5 adjustment test menu, CPU will automatically

·

set “Picture enhancement” to status of “closed”, color saturation to 0,

brightness to 50.

CL→Color saturation control

·

BT→Brightness control
CT→Contrast control

SB→Sub-brightness

·RB/GB/BB→Cutoff of red/green/blue gun

·RD/GD/BD→Excite of red/green/blue gun

[M6]MENU

•MENU6 for setting of color decode item.

·When enter MENU6 adjustment test menu, CPU will automatically

set “Picture” to status of “Standard”, and close “Picture enhancement”

setting.

·R/B BALANCE→R/B balance

R/B ANGLE→R/B decode and demodulation angles.

[M7]MENU

•MENU7

·When enter MENU7 adjustment test menu, CPU will automatically

set “Picture” to status of “Standard”, and close “Picture enhancement”.

·H blank L→Horizontal blanking (left)

— 16 —

H-PHASE 11

MENU3

V.POSI 28
V.SIZE 73
V.LIN 13
V.SC
5
OSD.H.DISPLAY 20

MENU4

RF-AGC 45

MENU5
CL 32
BT 48
CT 48
SC
RB 50
GB 50
BB 50
RD 60
GD 9
BD 60
SB 90

MENU6

R/B BALANCE 7

R/B ANGLE

7

MENU7

H blank L

4

H blank R

4

V . C O M P

7

H . F r e q
24

H blank R→Horizontal blanking (right)
V. C O M P →(Vertical size compensation) Compensating vertical size influenced by contrast.
H.Freq→Horizontal frequency (It is unnecessary to adjust in batch production.)
FBP.BL.SW→Select working manner of horizontal blanking.

0=Selected IC inside horizontal blanking

1=Selected IC both inside and outside FBP horizontal blanking.

[M8]MENU

•MENU8 for parameters setting

·When enter MENU8 adjustment test menu, CPU will automatically

set “Picture” to status of “Standard”, and close “Picture enhancement”.

SUBBASS 42
SUBTREBE 42
LOGOTIME 12

·SUB BASS→Sub-bass

SUB TREBLE→Sub-treble
LOGO TIME→Setting of LOGO display duration time

[M9]MENU

•MENU for parameters setting

When enter MENU9 adjustment test menu, CPU will automatically

·

set “Picture” to status of “Standard”, and close “Picture enhancement”.

·FM GAIN→ Sound frequency discrimination gain

VIDEO LEVEL→ Video detection output level
OSD CONSTANT→ OSD contrast
SUB COLOR→ NTSC system sub-color

FMGAIN 0
VIDEOLEVEL 7
OSDCONT 127
SUBCOLOR 127
SUBCOLOR 127
SUBSHARP 63
SUPTINT 51
BRIABLTH 4
BRIABL 0

SUB COLOR→ PAL system sub-color
SUB SHARP→ Sub-sharpness
SUB TINT→ Sub-tint

RBI ABL TH→ Adjustment of ABL initial control position
BRI ABL→ 1=ABL unable

0=ABL enable

2

5.1.3 Preset of I

C bus adjustment test item (Preset related to CRT used)

MENU8

MENU9

MI

M0 TEST.SIGNAL 0•4 0 M5 CL 0•63 32

SOUND .TRAP 0•7 0 BT 0•63 48
CPU VOLUME 0•1 1 CT 0•127 48

HEADPHONE
RB 0•255 30

M1 LA76814 On/Off On GB 0•255 80

PAL-M On/Off Off BB 0•255 40
PAL-N On/Off Off RD 0•127 80
NTSC On/Off On GD 0•15 15

— 17 —

Item

Range Preset Note

On/Off

Off SC

MI

Item

Range Preset Note

MI

play

English On/Off On BD 0•127 80
Espannol On/Off On SB 0•127 90

Portugues On/Off On
M7 H BLANK L 0•7 4

M2 AV2 On/Off Off H BLANK R 0•7 4

S-Video On/Off Off V.COMP 0•31 7

START.ON On/Off Off H.FREQ 0•63 24
OSD.. CONT 0 •3 1 FBP.BLK.SW 0•1 0

M3 H-PHASE 0•31 11 LOGO TIME 0•60 12

V. POSI 0•63 28
V. S I Z E 0•127 73 M9 FM GAIN 0•1 0

V. LI N 0•31 13 VIDEO LEVEL 0•7 7
V.SC 0•31 5 SUB CONT 0•127 127

M4 RF AGC 0•63 20

SUB TINT 0•127 51

M6 R/B Balance 0•15 7 BRI ABL TH 0•7 4

R/B Angle 0•15 7 BRT ABL 0•1 0

Item Range Preset Note

Wide

Zoom

OSD. H. d is

0•127 20
0•127 95 M8

SUB TREBLE 0•63 42

0•63 20 SUB COLOR 0•127 127 NTSC

SUB COLOR 0•127 127 PAL

MI

SUB SHARP 0•63 63

Item Range Preset Note

SUB BASS

0•63 42

5.2 Complete set adjustment test method

5.2.1 Set main power supply (+B)

Receive color bar signals, and set “Picture” to “Standard” status. Adjusting VR601, let +B

voltage = 117±0.5 V.

5.2.2 IF adjustment test

a) Connect 45.75 MHz 100 dB signal to TUNER IF test point.

b) Measure voltage of N201/PIN47.

c) Adjusting L204, let V

=3.4±0.1 V.

47

2

C bus adjustment test method

5.2.3 I

1. MENU3 for horizontal and vertical scan circuit adjustment, receive the signals of black-white

— 18 —

test card (numeric card).

a) Adjusting H-SHIFT value, let the picture horizontal center align at horizontal center of tube

screen.

b) Adjusting V-POSI value, let the picture vertical center align at vertical center of tube screen.

c) Adjusting V-SIZE value, let the picture vertical amplitude conform to requirement.

d) Adjusting V-LIN value, let the picture vertical linearity conform to requirement.

e) Adjusting V-SIZE value, let the heights of top and bottom panes of picture equal to that of

the center pane.

f) Adjusting OSD H DISPLAY value, let position of display bars (with number figures at side)

is symmetrical about right and left sides.

2. MENU4 for RF AGC adjustment

Receiving 60 dBu (1 mV) color bar signals, adjust AGC value (the voltage from high to low), let

the picture noise gradually reduced to level just aware.

3. MENU5 for adjustment of CRT cutoff, dark and Bright balance, and sub-brightness

After pre-heating the TV set fully, receive gray-white two-step signals.

a) Adjusting BT (brightness) value and CT (contrast) value, of FBT let the brightness of white

level and gray level of picture conform to conventional requirement of adjustment of

manufactory.

b) Select option to SC and press V+, then adjust Screen potentiometer of FBT, let a dim

mono-color (one color of red, green and blue, sometimes may lean to yellow, violet or white)

horizontal light line display on screen. Remember this color, press the numeric key 1, 2, 5, 6, 9,

0, let the horizontal light line become to white, then adjust SCREEN potentiometer again, let

the horizontal light line become to just can visible.

c) Select option to RB, GB and BB, and adjust RB, GB and BB values, let the gray color

temperature meet the requirement.

d) Select option to RD, GD and BD, and adjust RD, GD and BD values, let the white color

temperature meet the requirement.

e) Repeat c) and d) steps, let both gray and white temperature simultaneously meet the

requirement.

f) Receiving black-white 8-step signals, adjust SB (sub-brightness) value, let the difference

between first step and second (the most dim) step can just distinguish.

3.2.4 Checking x-ray protective circuit

a) Short-circuit jumperTP2001 and TP2002, activate protective circuit.

b) Remove the short circuit wires, and then press CH+ or CH- key, TV set startup again.

— 19 —

6. Trouble shooting

Rectifying and

Detection

Rectifying and

Detection

Rectifying and

Detection

Rectifying and

Detection

Rectifying and

Detection

14V

10V

15V

26V

117V

T611

Complete set power supply outline

6.1 No raster, no picture, no sound

General, these failures are produced by power sources, because of which refer to a wider area, so

that can be divided them two conditions to explain: no +B 117 V and existing +B 117 V.

(1) No +B(117 V) voltage (voltage of network 110 V ac)

These failures may be caused by switching type power. Because of the TV set has no-load

protection, over-load protection, over-current protection, once these protections are activated, the CPU

will enter to “STAND BY” status. So that status confuses with conventional CPU standby, some

difficulties are occurred for failure estimation. When the switching type power supply operating

normally +B=117 V, but +B=17 V when come into standby status.

N

=0V

Check fuse F601 or R602

Check C601,

C603~C606, L601,

V613, V502 at

condition of

short-circuit?

Y

Replace the

parts of

failure

Audio Power

Amplifying

N602 / 5V

N603 / 12V

H.Dri

Power Supply

Check voltage+B

N201

CPU

Power Supply

V. O UT

Power supply

H.OUT

Power Supply

Refer to the no operation

failures of CPU

=17V

Check voltage on D pole of V613

(switching transistor)

Check 110 V ac input and

VD603~VD606 rectifying,

V613.

Y

=140V

— 20 —

(2) Existing +B 117 V

These failures may be caused by abnormal operation of horizontal scan circuit, to confirm which

can observe the filament of tube whether bright on. If determined horizontal scan in abnormal

operation, look for the failure start from the horizontal drive stage. Search upward to LA76814 with
method of checking dc voltage and waveform according to sequence: N201 PIN27/H.OUT port→
N201 PIN25 power supply→ N603/15 V output→ N101CPU/PIN42(STAND BY) output.

Check horizontal

output stage and

deflection circuit

Y

Y

Check voltage at pin of V501(C)

Check filament

circuit of FBT~CRT

Check voltage at

N101/PIN16=0 V

=2.3V

=19 V

N

<18V

Check V501

horizontal

drive stage

corresponding parts

Check N201

Check

N

=26V

Y

Check N201/PIN25=5V

(input current at this pin is

Y

Check V505B pole

and N201/PIN27

waveform

10 mA)

Check voltage at

V602E, V602C

N

N

Check CPU

according to non-

operation

After restart TV, check

voltage of negative pole of

VD2002 <10 V

Y

10V

Check

N101/CPU/PIN42

=5 V

Check CPU/PIN42

N

STANDBY status

N

Check VD2002

Check voltage of main

power supply whether too

high or value of C

abnormal

511C512

Y

Check V604

— 21 —

6.2 Existing raster and no picture

d

Because of the picture video signals and OSD characters display are input to PIN44, PIN15,

PIN16, PIN17 of LA76814(N201), so to observe characters on screen of faulted TV can determine the

approximate area of fault.

Display OSD characters on screen

When searching automatically channels, check

CVBS waveform existed at N201/PIN(46)

Y

Check CVBS waveform

existed at N201/PIN44

Check operating status of

N

TUNER

Y

N

Check CVBS waveform

at N201/PIN19/PIN20/

PIN21

Check circuit between

PIN(46)~(44) of N201

Y

Check CRT board

N

Check N201

6.3 Existing raster, no picture and sound

Processing according “6.2 Existing raster and no picture” at first, let the picture display normally,

then check sound. About the repair method, see “6.4 Existing raster and picture, no sound”.

6.4 Existing raster and picture, no sound

Check waveform at two pins of loudspeaker whether

normal

Y

Check the

loudspeaker and its

connection

Y

Check N304

— 22 —

Y

Check waveform at

N304/PIN(6)/PIN(8)

whether normal

element connected

Check mute circuit of

CPU/VOL and V108

N

Check external

to N304/PIN(6)/

PIN(8)

Check voltage of

volume control at

N304/PIN(5)

N

Check elements between

*•

the bus from CPU to E2PROM an

main chip, no picture can occur.

Y

Y

N201(1)/PIN1 to

N304(3)/PIN

N Y

Check 180 V power supply on

CRT board

Y N

Check bus between

N101, N102, N201*

Check FBP waveform

at N201/PIN28

Whenever open or interconnect on

Check waveform

at N304/PIN(3 )
whether normal

N

Check waveform at
N201/PIN1 whether

Check SIF circuit at

N201/PIN52/PIN54(2)

element connect to

normal

power supply of

relative plug-in

Check external

N

Check 180 V

connector

N201/PIN28

N

6.5 CPU non-operating

Y

Check V604

Y

Check voltage at

N101/PIN(17 )(RESET)

=5V

Y

Manual RESET

Check oscillating

waveform at

N101/PIN(10)/PIN(11)

Check functional

inching key of the TV

whether pressed

6.6 Cannot save channels

Y

Check SD voltage

variation at

CPU/PIN(33)

Y

Check AFT voltage

variation at

CPU/PIN(15)

Check voltage at N101/PIN(42)

(STANDBY) =5V

Y

Check voltage at

N101/PIN(12)

=5V

Check V102

RESET circuit

Check crystal oscillator

and external elements

Check N101

N

Check 33 V of

voltage

N

Y

Y

N

N

When searching automatically channels,

observe whether can display picture

Check voltage

variation at

N201/PIN(22)

N

Check 15V~CPU

5V Supply

N

Check BT voltage of

N

N

N

Check voltage at

N101/PIN(16) (X-RAY)

TUNER=30 V

=0 V

When restart TV,
check voltage on

negative pole

VD2002=9.4 V

Check

protection

circuit of

V605 and

VD2001

N

Y

Check TUNER

Check R104 and VD101

N

>10V

Y

Check

C511
C512

— 23 —

7. Overview of IC function

7.1 N801 LC8632XXX Function: microprocessor

Symbol PIN Function description Symbol PIN Function description

NC 1 No connected STANDBY 42 STAND BY control output

NC 2 No connected TV/AV 41 TV/AV control output

N C 3 N o c o n ne ct e d AV1 / AV 2 4 0 AV 1/ AV2 /S -V HS c o n tr o l

output

STOP 4 Bus control port MUTE 39 MUTE output

NC 5 No connected SPOT KILLER 38 Blanking as TV turn off

VOLUME 6

NC 7 No connected BAND2 36 No connected

NC 8 No connected BAND1 35 No connected

GND 9 Ground IR-IN 34 Remote signal input

XTAL1 10 32kHz crystal oscillator SD 33 Identification signal input

XTAL2 11 32kHz crystal oscillator SYS IN2 32 No connected

VDD 12

KEY1 13 Keyed input 1 NC 30 No connected

KEY2 14 Keyed input 2 NC 29 No connected

AFT 15 AFT voltage input SCL 28 EEPROM SCL

X-RAY 16 X-RAY protection input SDA 27 EEPROM SDA

RESET 17 High level: Reset NC 26 No connected

FILT 18 Filtering OSD BLANK 25 OSD blanking output

CATV 19 CVBS signals input B OUT 24 OSD B output

V.SYN 20 Vertical pulse input G OUT 23 OSD G output

H.SYN 21 Horizontal pulse input R OUT 22 OSD R output

PWM output of volume

control

Connected to 5 V

power supply

NTSC3.58 37 No connected

SYS IN1 31 No connected

7.1.1 Description of pins of LC8632XXX

Pin No.1: NC

·

·Pin No.2: S-VHS selector switch. In case of the S-VHS status, the level is low, in other cases the

level is high.

Pin No.3: NC

·

·Pin No.4: CPU bus control port, in normal operating the level is high, when this level is forced

in low level, CPU bus will be opened, general, it is used for automatic adjustment of white balance.

·Pin No.5: NC

— 24 —

·Pin No.6: PWM output of volume control

·Pin No.7: NC

·Pin No.8: NC

·Pin No.9: GND

·Pin No.10 and 11: 32 kHz oscillator

·Pin No.12: VDD (5V)

·Pin No.13: Key input

Function

Voltage

MENU TV/AV POWER V+ V- P+ P-

0 0.625 1.25 1.875 2.5 3.125 3.75

·Pin No.14: TEST function input

·Pin No.15: AFT voltage input

·Pin No.16: X-RAY protection input (valid for high level)

·Pin No.17: Reset (valid for high level)

·Pin No.18: filtering

·Pin No.19:Full TV signals input, used for CCD Sampling signal.

·Pin No.20: Vertical pulse input

·Pin No.21:Horizontal pulse input.

·Pin No.22, 23, 24: R, G, B screen display output

·Pin No.25: OSD blanking output

·Pin No.26: NC

·Pin No.27: I

·Pin No.28: I

Pin No.29: SDA1 (no used)

·

2

C data bus (SDA0) port

2

C clock bus (SCL0) port

·Pin No.30: SCL1 (no used)

·Pin No.31: NC

Pin No.32: NC

·

·Pin No.33: Identification signal input

Note: If no signal at TV mode, SD (PIN33) is at low level, after 10 seconds, CPU will enter

to status of standby. In other conditions (Video, S-Video), this status cannot occur.

·Pin No.34: Remote signal input

·Pin No.35 and 36: NC

·Pin No.37: NC

·Pin No.38: Blanking output as TV turn

off. Only when turn-off power switch, it

outputs high level.

·Pin No.39: Sound MUTE output. In

normal at low level, when switching channel

or in case of no signal, it outputs high level.

· Pin No.40 and 41: Control signal

output of TV/AV(AV1)/AV2/S-VHS etc.

MODE CPU PIN NO.

PIN40 PIN41 PIN2
TV H H H
AV H L H

AV 1•

•

AV2 L H H

S-VHS L L L

·Pin No.42: STAND BY output. In

normal condition at high level, in STAND BY

status at low level.

TV/AV Truth-value table

— 25 —

7.1.2 Keys of the TV set: MENU, TV/AV, VOL-, VOL+, CH-, CH+

1) Continuously press [MENU] key, the menu will change as follows:

a). TV mode

PICTURE
FAV

→

SETUP

→

PIC-ENH

→

PRESET

b) AV mode

PICTURE → SETUP→ PIC-ENH → Normal operation

2

7.2 N201 LA76814 Function: I

Symbol PIN Function description Symbol PIN Function description

AUDIO OUT 1 Sound frequency output FBP IN 28 Sandcastle pulse forming

FM OUT 2 Sound detection output VCD I REF 29 Reference current for

PIF AGC 3

RF AGC OUT 4 Radiation frequency

PIF IN 5

PIF IN 6

GND• IF • 7

VCC•VIF• 8 Power supply

FM FIL 9 Sound detection filtering APC FIL 36 Color APC filtering

AFT OUT 10 AFT output ACC FIL 37 ACC filtering

BUS DATA 11 Data bus XIAL 38 3.58MHz Crystal oscillator

BUS CLOCK 12 Clock bus NC 39 No used

ABL 13 ABL SELECT V OUT 40 Output of selection of

R IN 14 Character red input GND•V/C/D• 41 GND

G IN 15 Character green input EXT V IN 42 External video signal input

B IN 16 Character blue input VCC•V/C/D• 43 Power supply

BL IN 17 Character blanking input INT V IN 44 Internal video signal input

VCC•RGB• 18 Power supply (RGB) BLACK STR 45 Black level extend filtering

R OUT 19 Red output VIDEO OUT 46 Video detection output

G OUT 20 Green output APC FIL 47 Video detection APC

B OUT 21 Blue output VCO COIL 48 Video detection

Inter medium

frequency amplifying

amplifying AGC

Picture

frequency input

Picture

frequency input

GND (

frequency amplifying)

intermedium

(

C bus control and NTSC small signal processing

CLOCK OUT 30 4MHz clock output

AGC

NC 31 No used

intermedium

intermedium

intermedium

frequency

amplifying)

OSD FIL 32 OSD circuit filtering

GND•CCD/H• 33 GND (IH_DL)

GND•X-RAY• 34

NC 35 No used

horizontal frequency

internal/external video

(video/color/deflection)

(video/color/deflection)

filtering

→

— 26 —

Symbol PIN Function description Symbol PIN Function description

SYNC 22 Synchronous signal

output

V OUT 23 Vertical signal output VCO FIL 50 Video detection filtering

RAMP FIL 24 Forming and filtering for

sawtooth wave

VCC•H/D• 25 Power supply (horizontal

oscillator/bus)

H APC FIL 26 Horizontal AFC filtering SIF APC FIL 53 Sound frequency

H OUT 27 horizontal oscillating

output

VCO COIL 49 Video detection

EXT AUDIO IN 51 External sound frequency

input

SIF OUT 52 Sound IF output

discrimination APC

SIF IN 54 Sound IF input

7.3 N304 TDA7056B

Symbol PIN Function description Symbol PIN Function description

NC 1 OUT+ 6 Audio output at (+) termina

VP 2 Power supply GND2 7 GND2

VI 3 Audio input OUT- 8 Audio output at (-) terminal

GND1 4 GND1 NC 9

VC 5 Volume control

Function: Sound frequency power amplifying

7.4 N401 LA7840 Function: Vertical scan output

Symbol PIN Function description Symbol PIN Function description

GND 1 INV IN 5 Signal input

V OUT 2 Vertical deflection output VCC2 6 Power supply input

VCC2 3 Power supply of output

stage

NON INV IN 4 Input

PUMP UP 7 Pump power supply

7.5 N601 MC44608P75 Function: Controlled oscillator of switching type power supply

Symbol PIN Function description Symbol PIN Function description

Demag 1 Switching transformer

I

SENSE

Control input 3 Error voltage sampling

Gnd 4 Vi 8 Power supply for turn-on

demagnetic switching
transistor start protection

2 V613 Sampling current

for over-current protection

input

Driver 5 Output

VCC 6 Power supply 6~13 V

NC 7

TV

7.5.1 N601 MC44608P75

·MC44608 is used as a controlled oscillator in switching power supply, the oscillating output at

its pin 5 is used as the input signal of the V613 power switching transistor. Thus, the output voltage of

stabilized voltage power source can be controlled through controlling conduction period and duty

cycle.

·The features of MC44608:

1. Few external elements/ more protections/ save energy – standby power consumption ≤ 3w.

— 27 —

2. Applicable range of input power is 90~220 V ac.

(K)

(R)

(A)

7.5.2 Overview of operation principle of the “green” power supply (refer to fig. 2)

·The operation principle of this power supply is same as general switching power supply. The

output voltage is controlled through controlling of the conduction period and duty cycle of switching

transistor. Only some new type elements such as controlled thyristorV642 MCR22-6 / Programmable

zenan Diode V640 TL431LP are used in this power supply, besides MC44608 mentioned above.

·Programmable voltage-regulator TL431LP

Stabilized output voltage V

KA

= - [V

(1+R1/R2)+I

ref

×R1]

ref

The stabilized voltage is inverse proportion with sampled voltage.

input V

KA

Reference

Cathode

R

1

IK

I

ref

R

Anode

2

V

ref

·Stabilized process (assume +B increasing)

+B↑→ V640/V

ref

↑→

V

Current of diode of photo-coupler↑→ Current of transistor of

↓→

KA

photo-coupler↑→ Voltage of N601/3↑→ Conduction period of switching transistor of
switching type power supply↓→ +B↓

STANDBY and normal operation

·

Normal operation:
CPU N101/42 at high level → V604 saturated conduction → Thyristor V642G at low level →
V642 cut-off → Power of photo-coupler N604/1 supplied by V614.

STANDBY operation:

CPU N101/42 at low level → V642 cut-off → Thyristor V642G at high level → V642
conducted → Power of photo-coupler N604/1 supplied by V642 → Current of N604 increased
largely → +B decreased to 17 V.

— 28 —

8. Voltage of IC and transistor

N101 LC8632xxx(color bars)

PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Voltage V 0 0 0 5 / 0/5 / / 0 2 2.5 5 5 5

PIN 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Voltage V 2.5 0 5 2.6 3 4.8 4.4 0 0 0 0 / 4.7 4.7

PIN 29 30 31 32 33 34 35 36 37 38 39 40 41 42

Voltage V / / 0 0 0.4 4.8 / / / 0 0 / / 5

N101 LC8632xxx(no signals, blue background)

PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Voltage V 0 0 0 5 / 0 / / 0 1.7 2.5 5 5 5

PIN 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Voltage V 4.6 0 5 2.6 2.5 4.8 4.2 0 0 3.6 3.6 / 4.2 4.2

PIN 29 30 31 32 33 34 35 36 37 38 39 40 41 42

Voltage V / / 0 0 0.4 4.8 / / / 0 0 / / 5

N201 LA76814(no signals, blue background)

PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Voltage V 2.3 2.3 2.5 1.9 2.9 2.9 0 5 2 2.3 4.7 4.7 4 0.8

PIN 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Voltage V 0.8 1.1 0 8 2 2 2 0.4 2.2 2.7 5 2.6 0.7 1

PIN 29 30 31 32 33 34 35 36 37 38 39 40 41 42

Voltage V 1.6 0 0 2.7 0 2.6 2.1 3.9 2.4 2.9 3.6 2.5 0 2.6

PIN 43 44 45 46 47 48 49 50 51 52 53 54

Voltage V 5 2.8 1.9 2.2 3.6 4 4 2.4 2.2 1.9 3.1 2.4

N201 LA76814(no signals, blue background)

PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Voltage V 2.3 2.3 0 5 2.9 2.9 0 5 2 4.6 4.3 4.3 3.7 1.1

PIN 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Voltage V 1.1 3 1.8 7.6 1.2 1.2 2.6 0.2 2.4 2.6 5 2.6 0.7 1

PIN 29 30 31 32 33 34 35 36 37 38 39 40 41 42

Voltage V 1.6 0 0 2.7 0 0 1.3 3.4 0.3 2.9 2.3 2.5 0 2.6

PIN 43 44 45 46 47 48 49 50 51 52 53 54

Voltage V 5 2.8 1.9 3.4 2.9 4 4 2.4 2.2 1.9 3.1 2.4

N304 TDA7056(no signals, blue background)

PIN 1 2 3 4 5 6 7 8 9

Voltage V / 14 2.4 0 0• 1.1 7 0 7 /

— 29 —

N304 TDA7056(no signals, blue background)

PIN 1 2 3 4 5 6 7 8 9

Voltage V / 14 2.4 0 0 7 0 7 /

N401 LA7840(color bars)

PIN 1 2 3 4 5 6 7

Voltage V 0 13 26 2.5 2.5 26 2

N401 LA7840(no signals, blue background)

PIN 1 2 3 4 5 6 7

Voltage V 0 13 26 2.5 2.5 26 2

N601 MC44608P75(color bars)

Normal operation

PIN 1 2 3 4 5 6 7 8

Voltage V 1 0 5 0 3.6 12.3 0 126

Standby operation

PIN 1 2 3 4 5 6 7 8

Voltage V 0 0•5 Change 0 0 8 0 131

Voltage of transistor (color bars)

PIN B C E PIN B C E PIN B C E

Voltage V 0.3 4.8 0 Voltage V 0 16 0 Voltage V 16 0 15

V114 V203 V302

PIN B C E PIN B C E PIN B C E

Voltage V 0.3 4.4 0 Voltage V 2.2 0 2.9 Voltage V 0.4 1.1 0

V501 V502 V604

PIN B C E PIN B C E PIN B C E

Voltage V 0.16 19 0 Voltage V -0.1 115 0 Voltage V 0.7 0.2 0

V613 V640 V642

PIN G D S PIN K R A PIN G A K

Voltage V 3.6 140 0 Voltage V 6.5 2.5 0 Voltage V 7.1 111 7.8

V901 V911 V921 V701

PIN B C E PIN B C E

Voltage V 1.7 120 1.2 Voltage V 2 11 1.4

V103 V107 V108

— 30 —

Voltage of transistor (no signals, blue background)

PIN B C E PIN B C E PIN B C E

Voltage V 0.3 4.8 0 Voltage V 0 16 0 Voltage V 16 0 15

V114 V203 V302

PIN B C E PIN B C E PIN B C E

Voltage V 0.3 4.4 0 Voltage V 3.4 0 4.1 Voltage V 0.7 0 0

V501 V502 V604

PIN B C E PIN B C E PIN B C E

Voltage V 0.16 19 0 Voltage V -0.1 115 0 Voltage V 0.7 0.2 0

V613 V640 V642

PIN G D S PIN K R A PIN G A K

Voltage V 3.6 140 0 Voltage V 6.5 2.5 0 Voltage V 7.1 111 7.8

V911 V921 V701 V901

PIN B C E PIN B C E PIN B C E

Voltage V 1.3 185 1 Voltage V 2 11 1.4 Voltage V 2.6 108 2.3

V103 V107 V108

— 31 —

9. Resistance to Earth of Some Circuits

(With multimeter 500 type×1K/red test pen connected to earth)

N101

•LC8632XXX•

PIN

1

2 / 13 18K 24 1.6K 35 /

3 / 14 18K 25 1.6K 36 /

4 10K 15 1.5K 26 / 37 /

5 / 16 3.6K 27 2.6K 38 10K

6 10K 17 10K 28 2.6K 39 10K

7 / 18 6K 29 / 40 /

8 / 19 10K 30 / 41 /

9 0 20 18K 31 0 42 10K

10 10K 21 10K 32 0

11 10K 22 1.6K 33 3K

Resistance

Va l ue

/ 12 3.6K 23 1.6K 34 5K

PIN

Resistance

Va l ue

PIN

Resistance

Va l ue

PIN

N102 •AT24C04•

PIN

1 0 3

2 0 4 0 6 3K 8 3.6K

Resistance

Va l ue

PIN

Resistance

Va l ue

0

PIN

5 3K 7 0

Resistance

Va l ue

PIN

N201 •LA76814•

PIN

1

2 1.4K 16 1.7K 30 2K 44 1.5K

3 1.5K 17 0.9K 31 / 45 1.2K

4 10K 18 1K 32 0.8K 46 0.8K

5 1.2K 19 1.7K 33 0 47 1.7K

6 1.2K 20 1.6K 34 0 48 1.4K

7 0 21 1.6K 35 1.4K 49 1.4K

8 0.8K 22 1.6K 36 1.2K 50 1.5K

9 1.7K 23 1.2K 37 0.9K 51 1.5K

10 1.5K 24 1.3K 38 1.3K 52 1.5K

11 3K 25 1.3K 39 1.5K 53 1.5K

12 3K 26 1.7K 40 1.4K 54 1.5K

13 1.3K 27 1.1K 41 0

14 1.7K 28 1.5K 42 1.5K

Resistance

Va l ue

1.4K 15 1.7K 29 1.2K 43 0.8K

PIN

Resistance

Va l ue

PIN

Resistance

Va l ue

PIN

Resistance

Va l ue

Resistance

Va l ue

Resistance

Va l ue

— 32 —

N304 •TDA7056B•

PIN

1 / 3 100K 5 10K 7 0

2 10K 4 0 6 10K 8 10K

9 /

Resistance

Va l ue

PIN

Resistance

Va l ue

PIN Resistance

Va l ue

PIN Resistance

Va l ue

N401•LA7840•

PIN

1 0 3 0.67K 5 0.95K 7 0.8K

2 0.6K 4 0.9K 6 0.5K

Resistance

Va l ue

PIN

Resistance

Va l ue

PIN Resistance

Va l ue

PIN Resistance

Va l ue

N601•MC44608P75•

PIN

1 90K 3 4.4K 5 1K 7 /

2 3.4K 4 0 6 36K* 8 95K*

Resistance

Va l ue

PIN

Resistance

Va l ue

PIN Resistance

Va l ue

PIN Resistance

Va l ue

*1. To measure with multimeter 500 type, the multiplying factor is [×10K], and the red test pen

connected to earth.

The resistance to earth of load of each power supply (with multimeter 500 type×1K/red test pen

connected to earth) are as follows:

VD621- =480Ω VD622- =500Ω VD623- =480Ω
VD624- =460Ω VD621- =480Ω

2. When the resistance of N601/PIN6 less than normal value, TV is in status of standby.

When the resistance of N601/PIN8 more than normal value, the switching power supply of TV

is in status of stop.

— 33 —

10. Waveform Diagrams at Each Point

— 34 —

Appendix 1 Explanation of Parts No. of elements

The designation of first digit:

A Complete set S Fastener
B Component T Transformer
C Capacitor U
D Diode V Variable resistor
E Loudspeaker, earphone,

microphone
F Fuse X Filter, etc.
G Mount of wiring Y
H Relay R—X Non-standard resistor
J Conductor C—X Non-standard capacitor
K Switch
L Inductor
M Accessories
N IC
P PCB
Q Transistor
R Resistor

W

— 35 —

Fixed resistor

h

h

h

N

g

R • • • • • •

• • • • • •

1 2 3 4 5 6 7 8 9 10 11 12

13

nd

2

digit: Material

D Carbon film resistor

F Fusible resistor

G Glass grazed resistor

S Metal oxide film

resistor

C Solid resistor

J Metal film resistor

W Wire resistor

Z Bare copper wire

th

digit: Power

13

— Non

A 1/8W

B 1/6W

C 1/4W

D 1/2W

E 1W

F 2W

G 3W

H 5W

J 6W

K 7W

L 8W

M 9W

N 10W

P 15W

Q 20W

R 30W

S 0.4W

T 1/10W

ote: When resistance value has 4 valid digits, do not use the first digit, shifting second

~ fifth di

t

t

t

4

,5

,6

digits :

resistance value

13th digits: Manufacturer

th

7

digit: Error

— Non

A

+

0.05%

B

C

D

F

G

J

K

M

N

P

Z

th

digit: Distance of lead(mm)

8

— Non

1 5.0

2 7.5

3 10

4 12.5

5 15

6 17.5

7 20

8 22.5

9 25

A 27.5

B 30

C 32.5

+

0.1%

+

0.25%

+

0.5%

+

1%

+

2%

+

5%

+

10%

+

20%

+

30%

+100%,-0%

+80%,-20%

th

9

digits: Characteristics

N Normal

A Inflaming

retarding

B

+

50ppm/

C

+

100ppm/•

D

th

digit: Dimension of resistor

11

body (mm)

N Bare copper wire

A 3.5×1.8

B 6.5×2.3
C 9×3.5
D 12×4
E 15.5×6

F 23×9

G

A 1.6×0.8
B 2.0×1.25
C 3.2×1.6
D 3.2×2.6
E 5×2.5

F 6.4×3.2

When 10th digit: F,G,H,
J,K,L,M,N,P (wired)

ppm/

+200

When 10th digit:

D(Flake)

its forward, and the third ~ sixth digits used as 4 valid digits.

— 36 —

•

•

th

10

digit: Shape of resistor

A

B

C

S

D

E

F

G

H

J

K

L

M

N

P

Q

3A

R

th

digit: Type

12

N Bulk

T 52mm

R 26mm

B 52mm

C 26mm

E Flake disk form

F Radial pop-up box

G Radial disk form

Axial
pop-up box

Axial disk
form

— 37 —

Capacitor

h

h

h

C • • • • • •

• • • • • •

1 2 3 4 5 6 7 8 9 10 11 12

13

nd

digit: Category

2

C Temperature

compensated ceramic

K High dielectric ceramic

B Semiconductor ceramic

J Monolithic
E Aluminum-electrolytic
F Polyester film(existed

D Polyester film (no

G Metallized polyester

A Metallized integrated

N Polypropylene file
M Metallized

H Compound film
T Tantalum-electrolytic
P Non-polarity

th

8

dielectric

dielectric

dielectric

inductance)

inductance)

film

layer polyester

Polypropylene film

electrolytic

digit: distance of lead (mm)

— Non

Y 2.5

1 5

2 7.5

3 10

4 12.5

5 15

6 17.5

7 20

8 22.5

9 25

A 27.5

B 30

C 32.5

Digit of 7: Error

— 38 —

t

t

4

,5

,6

Capacitance value

rd

digit: Voltage

3

A 6.3V
B 10V
C 16V
D 25V
E 35V
F 50V
G 100V
H 160V
J 200V
K 250V
L 300V
M 400V
N 450V
P 500V
R 630V
W 1KV
Z 1.6KV

X 2KV

Y 63V

A +

0.05%

B +

0.1%

C +

0.25%

D +

0.5%

F +

1%

G +

2%

J +

5%

K +

10%

M +

20%

P +100-0%

Z +80-20%

t

digits:

th

digit: Shape

10

A

J

B

C

D

E

F

G

H

K

L

M

N

th

12

digit: Type

N Bulk
T 52
R 26

B 52
C 26
E Flake disk form
F Radial pop-up

G Radial disk

9th digits: Characteristics

Code

nd

2

digit
C C? SL P X R
K B X7R E F R
E.P Normal 85 105• Low

B F R
Others —

Axial

pop-up box

Axial disk

form

box

A B C E F G S P X R

th

digit: Dimension of capacitor (mm)

11

10th digit

Code

A 3.5x1.8 5x11 22x30 1.0x0.5 —

B 6.5x2.3 6x11 22x40 1.6x0.8

C 9x3.5 8x11 26x40 2.0x1.25

D 12x4.5 10x12 26x50 3.2x1.6

E 10X16 30x60

F 10x20 34x60

G 12x20 35x35

H 12x25 22x35

J 16x25 35x50

K 16x30 35x45

L 18x40 22x45

M 20x30 30x40

N 20x35 35x30

P 22x40 30x50

Q 16x35 26x30

R 6x7 30x35

S 18x35

T 26x45

V 3x5

X 4x5

leakage

13th digits: Manufacturer

B C D M N E F Others

LxD DxH DxH WxL J.A.G.H

High

Long

ripple

service
life

105 • high

ripple

— 39 —

Non-standard resistor

h

h

h

h

R • • X •

• • • • • • • •

1 2 3 4 5 6 7 8 9 10 11 12

nd

2

digit: Material

D Carbon film resistor

13

F Fusible resistor
S Metal oxide film

resistor
C Solid resistor
W Wire resistor
J Metal film resistor
Z Bare copper wire

rd

digit: Power

3

A 1/8W G 3W N 10W
B 1/6W H 5W
C 1/4W J 6W
D 1/2W K 7W
E 1W L 8W
F 2W M 9W — Non

Non-standard Capacitor

t

t

t

5

,6

,7

digits:

Resistance value

th

8

digit: Error

A

+

B

+

C

+

D

+

F

+

G

+

J

+

LK

+

M

+

N

+

P

+100%,-0%

Z

+80%,-20%

—

Non

0.05%

0.1%

0.25%

0.5%

1%

2%

5%

10%

20%

30%

th

9

digit: Distance of

lead (mm)

0 —
1 5.0
2 7.5
3 10
4 12.5
5 15
6 17.5
7 20
8 22.5
9 25
A 27.5
B 30

10th,11th digits: Serial no.

01~79(bare copper

wire::80~99)

t

13

digit:

Manufacturer

th

digit: Type

12

N Bulk
T 52mm
R 26mm

B 52mm
C 26mm
E Flake disk form
F Radial pop-up box
G Radial disk form

Axial
pop-up
box
Axial disk
form

C • • X •

• • • • • • • •

1 2 3 4 5 6 7 8 9 10 11 12

13

rd

digit: Voltage

3

A 6.3V K 250V
B 10V L 300V
C 16V M 400V
D 25V N AC250V
E 35V R 630V
F 50V Z 1.6KV
G 100V X 2KV
H 160V Y 63V
J 200V

nd

digit: Category

2

C Temperature

— 40 —

compensated ceramic
dielectric

K High dielectric ceramic

dielectric

B Semiconductor ceramic

dielectric
J Monolithic H Compound film
E Aluminum-electrolytic T Tantalum-electrolytic
F Polyester film (existed

inductance)
D Polyester film (no

inductance)

G Metallized polyester film

N Polypropylene film

M Metallized Polypropylene

film

P Non-polarity electrolytic

V Variable capacitor

10th,11th digits:

Serial no. 01~99

13th digit:

Manufacturer

th,6th,7th

5

digits: Capacitance value

nd

digit 5th,6th digit 7th,8th digit

2
V Minimum Maximum

th

8

digit: Error

A +

B +

C +

D +

F +

G +

0.05%

0.1%

0.25%

0.5%

1%

2%

12th digit: Type

N Bulk
T 52
R 26
B 52
C 26
E
F
G

J +

K +

M +

P +100-0%

Z +80-20%

Axial pop-up
box

Axial disk

form
Flake disk form
Radial pop-up box
Radial disk form

5%

10%

20%

th

9

digit: Distance of

lead (mm)

0 —
1 5
2 7.5
3 10
4 12.5
5 15
6 17.5
7 20
8 22.5
9 25
A 27.5
B 30
C 35
Y 2.5

— 41 —

Fuse

h

h

F • • • •

2 3 4 5 6 7 8 9 10 11 12

1

• • • • • •

— •

13

2nd digit: Type of fuse

A

Normal

B

delay

C

Fast

D

3rd digit: Voltage

code

AC DC AC/DC

A B 1 250V

C D 2 127V

E F 3

G H 4

J K 5

L M 6

N P 7

Voltage

th

4th,5th,6
Current (µA)

t

9

,10

type and dimension

Code Dimension

01 D3x20

02 D5x20

03

digits:

7th digit:

Multiplying factor

8th digit: Shape

S

A

t

digits: Material of tube,

Material of tube
Glass
Glass
Plastic

13th digit:

Manufacturer

11th digit: Security number

A

B

C

D

E

F

G

H

J

M

Australia

Argentina

China

Egypt

England

France

India

Hong Kong

Japan

Multi-mark

Switch

K •

• • • • • • • •

1 2 3 4 5 6 7 8 9 10 11 12

13

2nd ,3rd digits: Category

PW

PS

PA

PC

TA
TB

— 42 —

TC

8th ,9th ,10th digits:

Serial no.

Push power switch

Slide power switch

Push button switch

Power select switch

Single linkage push switch(6x6mm)
Bi-linkage push switch (8x8mm)
Tri-linkage push switch(12x12mm)

001—999

TD Tetra-linkage push

switch

SV

Lever switch

LA

Slide switch

HA

Single linkage switch

HB Bi-linkage switch
KA Keyboard switch
RA

Rotary switch

6th digit:

Characteristics 1

H Horizontal
V Vertical

th

5

digit: Electrode number

Code

1 1
2 2
3 3
4 4
5 5

— —

th

7

Characteristics 2

L

Locked

N

Electrode number

No lock

digit:

•

13th digit:

4th digit : Number

of action points

1

1

2

2

3

3

4

4

5

5

6

6

7

7

Manufacturer

position
position
position
position
position
position
position

— 43 —

Variable resistor

V •

• • • • • • • • • • •

1 2 3 4 5 6 7 8 9 10 11 12

13

3rd ,4th digits: Type category 1

rd

3

digit 4th digit Type 3rd digit 4th digit Type
A A D6 horizontal A L D14 horizontal
Rotary B D6 vertical Rotary M D14 vertical
C D8 horizontal N D16 horizontal
D D8 vertical P D16 vertical
E D9 horizontal Q
F D9 vertical
G D10 horizontal S D19 horizontal
H D10 vertical
J D12 horizontal
K D12 vertical
B A
Slide B

nd

digit: Material

2

D Carbon film
C Glass graze
W X wired

th

5

digit: Category 2

A

Straight line type, without switch

B Straight line type, with switch
C Exponent type, without switch
D Exponent type, with switch
E Logarithm type, without switch
F Logarithm type, with switch
G S type, without switch
H S type, with switch

6th ,7th ,8th digits: Resistance value

10th ,11th ,12th digits: Serial no.

handle length, type, height,

dimension of lead, center position

13th digit: Manufacturer

th

9

digit: Combination

number

A 1
B 2
C 3
D 4
E 5
F 6

Loudspeaker, Earphone, Microphone

E •

• • • • • • • •

1 2 3 4 5 6 7 8 9 10 11 12

13

nd

digit: Category

2

S Loudspeaker M Microphone
E Earphone P Buzzer

rd

3

digit: Sub-category

A B C D E

3rd digit

nd

digit

2

S Moving coil Electromagnet

E Moving coil Electromagnet Electret

M

P

External magnet Internal magnet

4th ,5th digits: Impedance (Ohm)

— — •

8th ,9th ,10th digits: Serial

no.001~999

6th digit : Multiplying factor

7th digit: Type

R Circular
T Elliptic

13th digit: Manufacturer

— 44 —

— 45 —

Inductor

L • • • •

• • •

— — — • •

1 2 3 4 5 6 7 8 9 10 11 12

13

2nd digit: Designation

A Vertical
B

Horizontal
C
D

Flake type
E

F Horizontal linearity
G Line filter
M Degauss coil
T Intermedium frequency coil
N Antenna
P Impedance convertor
Y Deflection YOKE

Magnetic bead

rd

3

digit: Outline dimension (mm)

A B D E T N

2nd digit

Code

“—” 2

D D×L L×W D×L×d L×W type

A 6 2x4 3.2x2.5 3x6x1 4x4 Tie

B 8 3x5 2x1.25 3.5x9x0.6 5x5

C 10 3x7 3x7x1 7x7

D 18 4x10 3.5x5x1.3 10x10

E 12.5 6x6x2

F 5x10x1.8

G 3.5*4.5*0.8

H 5x6x2

J 10x6x3

X

Non-stan
dard

Specific

nd

digit: C.F.G.M.P.Y

th

digit: Error

7

J +

5%

K +

10%

M +

20%

nd

“—” When 2

9th ,10th ,11th digits: “-”

rd

3

digit 9th ,10th ,11th digits
X Serial no.
2nd digit 9th digit: Shape

B

digit:

C.F.E.M.G.T.N.P.Y

th

10

,11th digits: “-”

A

B

th

13

digit: Manufacturer

th

th ,6th

,5

digits: Inductance value(µH)

4

nd

2

digit 4th ,5th ,6th digits
A.B.D Inductance value
C.F.E.G.M Serial no. 001~999
T.N.P.Y

th

digit: Type

12

N Bulk
T 52 Axial pop-up box
R 26
B 52

C 26
E
F
G

8th digits: Distance of lead(mm)

0 Special space

1 5.0

2 7.5

3 10

4 12.5

5 15

6 17.5

7 20

8 22.5

9 25

— Non

2nd digit: T(medium frequency)

C With capacitor

N Without capacitor

Axial disk form

Flake disk form
Radial pop-up box
Radial disk form

— 46 —

Transformer

d

T • — • • • • — — — —

• •

1 2 3 4 5 6 7 8 9 10 11 12

13

Second digit: Dielectric material

B Iron core (for power supply)

M Magnetic core (for power supply)

F FBT

D Horizontal drive

th ,6th

4th ,5

Serial no. 0001~9999

12th digit: Changed serial

no. 0~9

13th digit: Manufacturer

,7th digits:

Integrated circuit (IC)

N •

1 2 3 4 5 6 7 8 9 10 11 12

13

• • • • • • • • • • •

12

Second 2~11th digits: Type indicated

directly, blank indicated with “_”

th

digit: Type

N Bulk

E Flake disk form

F Radial pop-up box

G Radial disk form

13th digit: Release code A…

common type indicate

with “_”.

— 47 —

Transistor and MOS transistor

d

h

f

Q •

• • • • • •

— • • • •

1 2 3 4 5 6 7 8 9 10 11 12

13

th

10

Second ~8th digit: Type indicate

directly, and blank indicated wit

“_”.

12th digit: Type

N Bulk
E Flake disk form
F Radial pop-up box
G Radial disk form

digit: Amplified factor indicated directly,

for example: Toshiba O, Y, GR. Code: O,

Y, G. “_” indicates non.

13th digit: Manufacturer (domestic)

th

digit: Integral form

11

A

B

C

D

E•F•G•
H•J•K

N Non

2

1,3

2

1.3

1.3

2

Front

Front

Front

Semiconductor

D •

• • • • • • • • • • •

1 2 3 4 5 6 7 8 9 10 11 12

13

Second digit: Category

R Diode
Z Zenar diode
L Light-emitting diode
H Thermal element (PTC)
N Thermal element (NTC)
V

Pressure-sensing element

G Light-sensing element

2nd digit: L

rd

digit: Category 4th digit: Dimension 5th digit 6th,7th,8th

3

Code Designation Code Circle Rectangle Code Color Serial no. “—”
A Circle(without color) 2 D2 5x1 2 Red 001-999
B Circle (transparent) 3 D3 5x2 3 Orange
C Circle (scatter) 4 D4 4 Yellow
D Circle (bi-color) 5 D5 5 Green

E Rectangle A Orange,

— 48 —

F Rectangle (bi-color) B Red, green

2nd digit “V”: 3rd ~7th categories, serial no. 8-10

rd

3

~11th digits: Type indicated directly, blank indicated with “_” (If the shape o

final products have special requirement, which can not be indicated in the type,

then it can be indicated by serial no. of 10

nd

digit: H, N, V

2

rd

3

digit 4th ,5th , 6th digits 7th digit 8th ,9th ,10th digits 11th digit

Internal construction

1 2

Single

element

Resistance value in normal
condition

Bi-element

th

9

,10th ,

th

11

digits

yellow-green

digits

13th digit:

Manufacturer

th

and 11th digits)

Error Serial no.

th

12

digit: Type

N Bulk
T 52 Axial pop-up box
R 26
B 52

C 26
E Flake disk form
F Radial pop-up box
G Radial disk form

Axial disk form

“—”

— 49 —

SAW Filter, Filter, Trapper, discriminator,

b

Delay-line, Resonator

X • • •

• •

— — — — — • •

1 2 3 4 5 6 7 8 9 10 11 12

13

Sound digit: Category

F Filter

T Trapper

D Discriminator

B Brightness delay-line

C Color delay-line

R Ceramic resonator

X Crystal resonator

rd

3

digit: Sub-category

2nd digit

Code

S SAW Filter

C Ceramic Ceramic Ceramic

L LC type LC type LC type

“—”

F T D B.C.R.X

“—”

4th ,5th ,6th digits: Serial no. 001~999

13th digit: Manufacturer

12th digit: Type

N Bulk
E Flake disk form
F Radial pop-up box
G Radial disk form

PCB

P • • • •

• • •

1 2 3 4 5 6 7 8 9 10 11 12

13

2nd digit: Category

A Main board T Tuner board

B CRT board X Hybrid board (mixed)

C Power supply board Y Other sub board

D MF amplifier board P PIP board

E Sound frequency board

F Keyboard board

G Interface board

— 50 —

— — — •

th

,5th ,6th ,7th digits: Serial

4

no. 0001~9999

rd

3

digit: Hybrid board quantity

rd

digit of Code Quantity of

3

—— Non

2...9 2...9

10...20 A...K

hybrid board

•

th

8

digit: Serial no. of hybrid

oard in same category: “_”, for

in different category: A, B…

th

digit: Change serial no.

12

1~9

th

digit:

13

Manufacturer

— 51 —

Socket

G •

• • • • • •

— — — — •

1 2 3 4 5 6 7 8 9 10 11 12
13

2nd, 3rd digits: Category 1

2nd digit 3rd digit

A TJC1 big size

A

B TJC2 medium size

C TJC3 (small size) XH

D TJC3(small size)EH

E MKS STOCKO base

F

J B TO B STOCKO

Z TJC18A

Y TJC18Y (base)

G IC base (bi-row)

H IC base (single row)

K VH base

A CRT base

B

B RCA base

C SVHS base

D 3.5mmJACK base

E 2.5mmJACK base

F 6.35mm JACK base

G DIN base

H 3-pole power base

A wire clip

C

Designation

MKS STOCKO PLUG

4th digit: Category 2

V Vertical

H Horizontal

A Vertical with switch

B

2nd ,3rd digits 4th digit Space(mm)

AG A 2.54

AH B 1.78

th

6

,7th ,8th digits: Serial no. 001~999

nd

,3rd digit: BB)

(2

2 Red 01---99

4 Yellow

9 White

Mix

•

Horizontal with switch

th

6

digit: 7th ,8th digit:

Color Serial no.

13th digit: Manufacturer

5th digit: Number of contacts

Code

1 1 8 8

2 2 9 9

3 3 A 10

4 4 B 11

5 5 C 12

6 6 J 18

7 7

2nd ,3rd digits: AG, AH 2nd ,3rd digits: AB

Code Number pins Code Number pins

A 52 S Small diameter

B 40 L Big diameter

C 30

E 42

F 8

D 64

Number of

contacts

Code

Number of

contacts

Conductor material

J • •

•• • • • • • •

1 2 3 4 5 6 7 8 9 10 11 12 13

th

4

,5th ,6th digits: Length (mm) (4th ,5th digits:

Valid figures 6

nd

digit: E 4th ,5th ,6th digits: “_”

2

2nd digit: category

P Power supply wire

E GND conductor

W Hybrid wire

H High insulation wire

B Shielding wire

D Bi-layer insulation

C Coaxial cable (IEC)

S Divergent wire

Z Copper wire(tinning)

— 52 —

th

digit: Multiplying factor)

3rd digit: Number

of wire cores

1 1 core

2 2 cores

3 3 cores

4 4 cores

5 5 cores

6 6 cores

7 7 cores

8 8 cores

9 9 cores

A 10 cores

B 11 cores

F 15 cores

th

,10th ,11th digits: Serial no. 001~999

9

th

13

digit: Manufacturer

7th digit: “_”

nd

2

,3rd digits: S1(divergent wire)

Code Color

1 Brown

2 Red

3 Orange

4 Yellow

5 Green

6 Blue

7 Violet

8 Gray

9 White

0 Black

— Others

•

—

8th digit: Plug type

Code Type Security code (2

A TJC1(Big size) Australia

B TJC2(medium size) Argentina

C

TJC3(small size)-XH

D

TJC3(small size)-EH

E TJC3-XH—D2 England

F TJC3-EH—D2 France

G IEC—IEC India

H IEC—RCA Hong Kong

J D2—D2 Japan

L MKF STOCKO Germany VDE

M VH

K XH-XH

V VDE

U UL

X Unknown

— Non

China CCEE

Egypt

nd

digit: P)

— 53 —

Bolt, Screw

th

S • • • •

• • • • • •

— •

1 2 3 4 5 6 7 8 9 10 11 12
13

2nd digit: Category 1

A Bolt GB M Notch head tap screw GB

B Bolt SJ N Notch head tap screw SJ

C Screw GB P Flat head tap screw GB

D Screw SJ Q Flat head tap scre w SJ

E Combined Screw GB R Combined shar p head tap screw GB

F Combined Screw SJ S Combined sharp head ta p screw SJ

G T Combined notch head tap screw GB

H U Combined notch head tap screw SJ

J Y Non-standard tap screw

K Sharp head tap screw GB

L Sharp head tap screw SJ X Nu t and washer

10th digit: Material

C U E F G N

A B

Cu Stainless steel Normal

Al

steel

Nylon

3rd digit: Category 2

A Cross pan head

B Cross pan head with washer

C Cross sunk head

D Cross hex head

E Cross hex head with washer

F Socket hex head

G Cross flat head

7th ,8th ,9th digits: Length (mm)

L<10mm L>=10mm

Decimal: indication
with R

Example:L=6mm 6R0 L= 350mm 350

11th digit: Coating material

A B C D E F

Ni Cr Cu

No indication of
decimal

Zinc

black

yellow

4
components, others indicated with
“_”)

Zinc

Zinc

white

A With flat washer

B With spring washer

C With flat and spring washer

D With quincunx washer

th

13

digit: Manufacturer

th

digit: Category 3 (suitable for

th

5

,6th digits: Diameter (mm)

1. D<10mm: direct indication (no

indication for decimals)

2. D≥10mm: tens digit indicated with

code

A 10 D 40 G 70

B 20 E 50 H 80

C 30 F 60 J 90

Example: D=15mm A5
D=3.0mm 30
D=20mm B0

Nut, Washer

S X •

• • • •

1 2 3 4 5 6 7 8 9 10 11 12
13

rd

digit:

3

N Nut

W Washer

Nut: 4th digit: Category 1

1 GB

2 SJ

3 Non –standard

Was her : 4

1 GB

2 SJ

3 Non-standard

digit:

Category 1

— 54 —

5th digit: Category 2

A Normal h ex H Combined with flat wash er

B Fine thread

C Square K Combined with flat and spring

D Wing L Combined with quincunx washer

E Thin cap M Combined with b owl-form

F Thick cap N

G Hex with

5th digit: Category 2

A

B

C

D

E

F

— — • • — •

th

6

, 7th digits: Diameter (mm)

hex

washer

Standard flat washer

Small size flat washer

Big size flat washer

Circular spring washer

Flat spring washer

Internal tooth flat

J Combined with spring washer

washer

washer

G

External tooth flat washer

Both internal and external

H

J

Conical external tooth washer

L Quincunx washer

M Bowl-form washer

1. D<10mm: direct indication (no
indication for decimals)

2. D≥10mm: tens digit indicated
with code

A 10 D 40 G 70

B 20 E 50 H 80

C 30 F 60 J 90

Example:D=15mm A5

11th digit: Coating material (nut, washer)

A B C D E F

Ni Cr Cu Zinc

10th digit: Material (nut, washer)

A B

Cu

Al

th

digit: Manufacturer

13

Zinc

yellow

Zinc

white

Normal

steel

Nylon

black

C U E F G N

Stainless

steel

— 55 —

Component

B • • • • • •

— — —

•

• •

1 2 3 4 5 6 7 8 9 10 11 12

13

3rd digit: Category

A Main board unit E Graph-words unit A 9” J 21”

2nd digit:

X(chassis)

2nd digit:

U(tube)

B Video unit F PIP B 12” K 22”

C Interface unit G C 14” L 24”

D Keyboard unit H Auxiliary unit (synthesized)

A 14” H 22” E 17” N 29”

B 16” J 24” F 18” P 33”

C 17” K 25” G 19” Q 34”

D 18” L 28”

E 19” M 29”

F 20” N 33”

G 21” P 34”

nd

digit: C

2

(housing

product)

nd

2

digit: T

(emitter)

2nd digit: Category

D 16” M 28”

H 20”

rd

digit: Indication of

3

“_”

X Inner-works

C Housing

U CRT

T Remote

emitter

th,5th,6th,7th

4

digits:

serial no.

0001—9999

th

8

digit:

Changed serial

no. A

th

12

,13th digits:

Manufacturer

Tuner•BXAT•••••———•

Remote receiver BXAR••••————•

5th digit: Category

N Normal S Satellite bands
A Supplement300

MHZ

B Supplement470

MHZ

5th,6th,7th,8th digits:

0001--9999

K Satellite Ku

band

th

digit:

13

Manufacturer

th,7th,8th

6

digits: Serial no.

9th digit:

•

Voltage
synthesis

F Frequency

synthesis

th

13

digit: Manufactory

Complete set

A •

• • • • • •

1 2 3 4 5 6 7 8 9 10 11 12

13

2nd,3rd digits:

Category

90 TV set
20 Audio

equipment

— 56 —

30 Monitor

4th digit: Serial no. of

trademark

M SANWAN
H HUANYU

— — — — •

th,6th,7th

digits:

5

Product serial no.

001—999

8th digit: Improved

serial no.

0—9

13th digit:

Manufacturer

Thick film component

R

B - •

• • • • • • • • • •

1 2 3 4 5 6 7 8 9 10 11 12

13

rd

3

digit: Category

A Pure resistance net

B Pure capacitance net

C RC net

D Active net (power

supply)

E Active net (high

power)

F Active net (small

signals)

th,7th,8th

6

digits: 9th digit:

th

digit: Net type (3rd digit:ABC)

4

A B

1 2 3 4

C D

R R R

2R 2R 2R 2

1 2 3 n n+1 n+2

1 2 3 4 5 6 2n-1 2n

E F

Others“—”

10

th

digit: Material

characteristics

th

11

digit: Lead

distance

A:2.54mm

B:1.78mm

12th digit: Type

F: Radial pop-up box

N Bulk

5th digit: Number of elements in net

RC

13

th

digit:

Code Quantity

1...9.A.. 1...9.10...

Code Quantity 3rd digit: C

1...9.A.. 1...9.10...
“—”

3rd digit: A,B

resistor,

capacitor

component

3rd digit:

D,E,F active

element

Manufactory

— 58 —

Accessories

M • • • •

• • •

— — — • •

1 2 3 4 5 6 7 8 9 10 11 12

13

3rd digit: Category2

0

1

2

3

4

5

6

7

8

9

nd

2

A Adhesive S Discharger

B

C Rubber U

E Cabinet lock V

F Sheet W

G Plastic X

H Spring Y

J Foam cushion 1

K Carton 2

L Trademark 3

M

N Rivet 5

P Terminal plate 6

Q 7

R 8

9 Unknown

A 14” J 24”
B 16” K 25”
C 17” L 28”
D 18” M 29”
E 19” N 33”
F 20” P 34”
G 21”
H 22”

A B C E F G H J K L M N T P 9

2nd

digit

PVC label

Support

Silicon gel Radiator

Adhesive tape Grid cover

Self-adhesive

Metal spacer

paper

Self-adhesive

Metal bar

non-woven

Damped

Metal hook

block

Bar code

Shield cover

paper

Label for

product no.

digit: Category1

Metal support,
flake, hook

Magnetic material

D: Injection molding

3rd digit: Category 2(Screen size code)

T Battery

4

X

Rubber

Rubber ring

Rubber

Conduct heat

film

NEC

Circuit

diagram

Instruction Plastic nail

Maintenance

Card

Conformity

Plastic tube clip

certificate

Tension

Plastic bag

spring

Press

spring

th

digit: Category3 (code of housing serial no.)

4

th

A EK-A EK1 •• 1 •• 1

B NEC1 EK2 ••1 NEC29’

C NEC2Single EK3 ••2598

D NEC3Two

E PANDA1401 NEC5

F HAIFENG

G

H

J EK9

4th digit: X 5th,6th,7th,8

Complete

Set cushion

Sponge
cushion

A(14”) F•20”• G(21”

SANWAN

set

NANKONG

Parts

Turnover

sheet

Domestic trademark

5th,6th digits: Cabinet parts serial no. 01~99

th

digit: Material

7

th

8

digit: Changed serial no. 1~9

12th,13th digits: Manufacturer

th

digits: Serial no.

Ring

Hollow

R6S

K(25”) M(29”) P(34’) 3th digit

Terminal plate

Sheet mica

— 59 —

Appendix 2 Difference of CRT

Tube type

Main power

voltage

R951 RFE3R9J5ACDNF RFF1R2J5ACDNF

C522 CKX681K2RL-ND CKX471K2RL-ND

C514 CMK364J5-K-NP/S CMK394J5-K-NP/S

L501 LF-037-2---NJ LF-015-2---NJ

R431 RSE821J4ACCND RDD102J4NBCND

R639 RDD513J4NBCND RDD473J4NBCND

T601 TM-0047----1L TM-0047----0L

PHILIPS

A51EFK155X01

117V 110V

SEG-HITACHI

A51JFC82X13•C•

— 61 —