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 —
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