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PART NUMBER

DESCRIPTION               QTY

                  LOCATION

18-CB0223-JNX

RES. C.F. 22K OHM 1/6W +/-5%

7

R092, R631, R915, R916, R920, R925, R952

18-CB0224-JNX

RES. C.F. 220K OHM 1/6W +/-5%

1

R251

18-CB0271-JNX

RES. C.F. 270 OHM 1/6W +/-5%

1

R711

18-CB0272-JNX

RES. C.F. 2.7K OHM 1/6W +/-5%

1

R227

18-CB0302-JNX

RES. C.F. 3K OHM 1/6W +/-5%

2

R601, R602

18-CB0331-JNX

RES. C.F. 330 OHM 1/6W +/-5%

4

R222, R223, R229, R259

18-CB0332-JNX

RES. C.F. 3.3K OHM 1/6W +/-5%

10 R013, R014, R025, R034, R074, R076, R111, R254, 

R302, R472

18-CB0333-JNX

RES. C.F. 33K OHM 1/6W +/-5%

4

R114, R208, R289, R714

18-CB0433-JNX

RES. C.F. 43K OHM 1/6W +/-5%

1

R314

18-CB0470-JNX

RES. C.F. 47 OHM 1/6W +/-5%

6

R021, R070, R077, R084, R085, R940

18-CB0471-JNX

RES. C.F. 470 OHM 1/6W +/-5%

6

R037, R039, R125, R252, R931, R932

18-CB0472-JNX

RES. C.F. 4.7K OHM 1/6W +/-5%

8

R035, R066, R201, R211, R953, R954, R965, R967

18-CB0473-JNX

RES. C.F. 47K OHM 1/6W +/-5%

5

R052, R115, R262, R263, R284

18-CB0560-JNX

RES. C.F. 56 OHM 1/6W +/-5%

1

R122

18-CB0561-JNX

RES. C.F. 560 OHM 1/6W +/-5%

1

R228

18-CB0750-JNX

RES. C.F. 75 OHM 1/6W +/-5%

1

R933

18-CB0752-JNX

RES. C.F. 7.5K OHM 1/6W +/-5%

1

R221

18-CB0820-JNX

RES. C.F. 82 OHM 1/6W +/-5%

4

R913, R923, R971, R981

18-CB0822-JNX

RES. C.F. 8.2K OHM 1/6W +/-5%

3

R022, R026, R286

18-CD0100-JNX

RES. C.F. 10 OHM 1/4W +/-5%

1

R064

18-CD0102-JNX

RES. C.F. 1K OHM 1/4W +/-5%

1

R724

18-CD0181-JNX

RES. C.F. 180 OHM 1/4W +/-5%

1

R226

18-CD0222-JNX

RES. C.F. 2.2K OHM 1/4W +/-5%

1

R723

18-CD0272-JNX

RES. C.F. 2.7K OHM 1/4W +/-5%

1

J691

18-CD0332-JNX

RES. C.F. 3.3K OHM 1/4W +/-5%

1

R313

18-CD0392-JNX

RES. C.F. 3.9K OHM 1/4W +/-5%

1

R725

18-CD0472-JNX

RES. C.F. 4.7K OHM 1/4W +/-5%

1

R312

18-CD0829-JNX

RES. C.F. 8.2 OHM 1/4W +/-5%

2

R607, R608

18-CE0121-JNX

RES. C.F. 120 OHM 1/2W +/-5%

1

R731

18-CE0229-JNX

RES. C.F. 2.2 OHM 1/2W +/-5%

1

R305

18-CE0470-JNX

RES. C.F. 47 OHM 1/2W +/-5%

1

R103

18-DF0109-JGX

RES. M.F. 1 OHM 1W +/-5%

1

R461

18-EG0109-JHX

RES. FUS. 1 OHM 2W +/-5%

1

R431

18-FE0121-JNX

RES. M.O. 120 OHM 1/2W +/-5%

1

R306

18-FE0472-JNX

RES. M.O. 4.7K OHM 1/2W +/-5%

1

R471

18-FF0103-JGX

RES. M.O. 10K OHM 1W +/-5%

1

R421

18-FF0221-JGX

RES. M.O. 220 OHM 1W +/-5%

1

R307

18-FF0242-JGX

RES. M.O. 2.4K OHM 1W +/-5%

1

R402

18-FF0681-JGX

RES. M.O. 680 OHM 1W +/-5%

1

R411

18-FG0399-JHX

RES. M.O. 3.9 OHM 2W +/-5%

1

R726

18-FG0479-JHX

RES. M.O. 4.7 OHM 2W +/-5%

1

R303

18-GF0109-JGX

RES WIRE ROUND 1 OHM 1W +/-5%

1

R311

18-GG0109-JHX

RES WIRE ROUND 1 OHM 2W +/-5%

1

R422

18-GM0302-KTX

RES. CEMENT 3K OHM 7W +/-10%

1

R404

25-264610-M1X

CAP. ELEC 4.7UF 50V +/-20% NP

1

C417

25-BCB100-M1X

CAP. ELEC 10 UF 16V +/-20%

12 C074, C106, C214, C227, C276, C651, C655, C661, 

C662, C666, C671, C952

25-BCB101-M1X

CAP. ELEC 100 UF 16V +/-20%

8

C064, C217, C228, C257, C658, C934, C944, C969

25-BCB220-M1X

CAP. ELEC 22 UF 16V +/-20%

1

C278

25-BCB221-M1X

CAP. ELEC 220 UF 16V +/-20%

2

C634, C933

25-BCB470-M1X

CAP. ELEC 47 UF 16V +/-20%

14 C070, C202, C274, C911, C912, C913, C921, C922, 

C923, C931, C932, C943, C981, C991

25-BCB471-M1X

CAP. ELEC 470 UF 16V +/-20%

1

C082

25-BEA102-M1X

CAP. ELEC 1000 UF 35V +/-20%

2

C432, C610

25-BEA221-M1X

CAP. ELEC 220 UF 35V +/-20%

1

C306

25-BEA471-M1X

CAP. ELEC 470 UF 35V +/-20%

2

C607, C608

25-BEB101-M1X

CAP. ELEC 100 UF 35V +/-20%

1

C731

25-BEG222-M1X

CAP. ELEC 2200 UF 35V +/-20%

2

C303, C309

25-BFB100-M1X

CAP. ELEC 10 UF 50V +/-20%

2

C222, C311

25-BFB101-M1X

CAP. ELEC 100 UF 50V +/-20%

1

C605

25-BFB108-M1X

CAP. ELEC 0.1 UF 50V +/-20%

1

C271

25-BFB109-M1X

CAP. ELEC 1 UF 50V +/-20%

8

C206, C253, C631, C654, C663, C664, C665, C672

25-BFB478-M1X

CAP. ELEC 0.47 UF 50V +/-20%

1

C208

25-BFB479-M1X

CAP. ELEC 4.7 UF 50V +/-20%

2

C101, C124

25-BKA100-M1X

CAP. ELEC 10 UF 200V +/-20%

1

C421

25-BKG101-M1X

CAP. ELEC 100 UF 200V +/-20%

1

C422

25-BLA100-M1X

CAP. ELEC 10 UF 250V +/-20%

1

C442

Page 3 of 7

CTM6840

Summary of Contents for CT-M6840

Page 1: ...SERVICE MANUAL CTM6840 68CM CTV Effective JULY02 CTM6840SERV ...

Page 2: ...NTSC QC checking Enter D Mode by pressing D Mode ON OFF key and then you can enter the D mode Enter S Mode by pressing VOLUME DOWN key on the unit until the volume decrease to minimum level then press the DISPLAY key on the remote handset don t release the volume key and you can enter S mode After enter D mode or S mode you can adjust the setting according to the following procedure Press 1 to ent...

Page 3: ...put level at 25 9 Volume output level at 50 Press 7 to enter system setting System setting 9 System setting System setting System setting System setting System setting System setting Press 8 to enter picture alignment menu 1 SCNT Sub contrast for luminance signal CNTX Maximum contrast CNTN Minimum contrast 9 BRTX Maximum brightness 9 BRTN Minimum brightness 9 COLX Maximum color COLN Minimum color ...

Page 4: ... the voltage at pin 48 of IC201 becomes 4 62 0 2V the picture must stable 4 Enter D mode and press the AFT update BBE button It will start Auto AFT Adjustment and the screen will show PIFAFT OK if the process is finished 1 Apply a 38 9MHz color bar with NICAM signal to the IF input 2 Monitor the DC voltage at pin 15 of IC1101 3 Adjust T1101 until the voltage at pin 15 of IC1101 becomes 2 5 0 1V 4 ...

Page 5: ...nter D mode and press 1 key and the screen will become a horizontal line Then adjust the SCREEN VR on the flyback transformer to set the intensity of the line to a minimum visible level the line can just be seen 4 Press 1 key again and the TV will become full raster 5 Select BRTC to adjust the sub brightness until that the 2 dark bar of 8 level grey scales just can be seen 1 Receive a black and wh...

Page 6: ... NTSC signal to the RF input in STANDARD status 2 Select HPOS60 to adjust the Horizontal center 3 Select VPOS60 to adjust the Vertical center 4 Select HIGH60 to adjust the Vertical amplitude 5 Select VLIN60 to adjust the vertical linearity 6 Select VSC60 to adjust the vertical S correction 1 Enter D mode and press key 0 then choose OSD item and adjust the OSD horizontal position 2 Enter D mode and...

Page 7: ...alue 00 BIT Item 0 Blanking 0 on 1 off 1 2 3 4 5 V Mute timing 200ms 8ms Data 6 Base band filter in NTSC system 0 on 1 off 7 VMOD VCDM2 default value 40 for 38MHz IF 30 for 38 9MHz IF BIT Item 0 AFT mute 0 on 1 off 1 SECAM ADJ 0 SECAM correction off 1 SECAM correction on 2 TB1238N_VMOD 3 PIF VCO ADJ 0 follow bit 0 1 manual adjust 6 5 4 IF frequency 111 33 9MHz 110 33 95MHz 101 34 47MHz 100 38MHz 0...

Page 8: ...o use 4 BG 0 off 1 on 5 I 0 off 1 on 6 DK 0 off 1 on 7 M 0 off 1 on OPTION default value 04 BIT Item 0 When blue background off mute pin of CPU 0 audio mute on 1 audio mute off 1 When blue background off external mute pin of CPU 0 audio mute on 1 audio mute off 2 When change channel 0 picture mute off 1 picture mute on 3 Audio demodulation gain setting 0 50KHz 1 25KHz 4 When no signal 0 search cha...

Page 9: ... SP602 44 29OFLS SJ2A CRT A68QBT892X50 AUST 1 CRT01 46 26514H 04X HS 4P A B 500 13 RBGW TJC1 4Y 1 P411H FOR D Y COIL 46 27580H 02X HS 2P22 600 7 F W TJC3 2Y 1 P602H FOR M BD P602 46 27580H 02X HS 2P22 600 7 F W TJC3 2Y 1 P601H FOR M BD P601 54 113971 0UE PVC TUBE 6 L 160MM 2 FOR SPEAKER CONNECTORS 54 114000 00X FELT TAPE 150X19MM 4 FOR F CAB SPEAKER 54 205140 000 SPACER CRT MOUNTING T 2MM 4 MTG CR...

Page 10: ...RANSISTOR 2SD1499Q POWER 1 Q722 11 SK2541 0BX TRANSISTOR 2SK2541 N CHANNEL 2 Q052 Q212 13 000040 52P IC 4052 2 IC961 IC962 13 00M24C 08P IC M24C08 EEPROM 8K 1 IC002 13 00TA84 27P IC TA8427K 1 IC301 13 0TDA26 16S IC TDA2616 AUDIO O P 1 IC601 13 TA1216 ANP IC TA1216AN 1 IC651 13 TB1240 ANP IC TB1240AN 1 IC201 13 TCLM13 V1P IC TCLM13V1 3CD4 CPU 1 IC001 14 LED05R XX0 LED HFR105 5MM 1 D031 18 CB0101 JN...

Page 11: ...2 OHM 1 2W 5 1 R305 18 CE0470 JNX RES C F 47 OHM 1 2W 5 1 R103 18 DF0109 JGX RES M F 1 OHM 1W 5 1 R461 18 EG0109 JHX RES FUS 1 OHM 2W 5 1 R431 18 FE0121 JNX RES M O 120 OHM 1 2W 5 1 R306 18 FE0472 JNX RES M O 4 7K OHM 1 2W 5 1 R471 18 FF0103 JGX RES M O 10K OHM 1W 5 1 R421 18 FF0221 JGX RES M O 220 OHM 1W 5 1 R307 18 FF0242 JGX RES M O 2 4K OHM 1W 5 1 R402 18 FF0681 JGX RES M O 680 OHM 1W 5 1 R411...

Page 12: ...4 J0X CAP M P E 0 47 UF 50V 5 5 C225 C243 C251 C603 C604 27 MCC272 J0X CAP P E 2700 PF 100V 5 1 C471 27 PBC103 J0X CAP P E 0 01UF 50V 5 1 C052 27 PBC222 J0X CAP P E 2200 PF 50V 5 2 C207 C221 27 PBC223 J0X CAP P E 0 022UF 50V 5 3 C201 C611 C612 27 PBC273 J0X CAP P E 0 027UF 50V 5 2 C653 C659 27 PBC333 J0X CAP P E 0 033UF 50V 5 1 C302 27 PBC393 J0X CAP P E 0 039UF 50V 5 1 C308 27 PBC472 J0X CAP P E ...

Page 13: ...RE JUMPER 17MM 3 J231 J240 J835 41 WJ0175 B00 WIRE BARE JUMPER 17 5MM 6 J223 J249A J251 J661 J771 J811 41 WJ0180 B00 WIRE BARE JUMPER 18MM 5 J212 J213 J214 J215 J623 41 WJ0190 B00 WIRE BARE JUMPER 19MM 1 J823 41 WJ0195 B00 WIRE BARE JUMPER 19 5MM 3 J323 J355 J641 41 WJ0200 B00 WIRE BARE JUMPER 20MM 7 J312 J427 J624 J626 J727 J824 J831 45 FIL5M5 0Y0 CER FILTER 5 5 MHZ 1 Z261 45 OSC4M4 3Y0 CRYSTAL 4...

Page 14: ...C MC7809C LINEAR 9V 1A 1 IC851 13 00SE14 0NS IC SE140N 1 IC831 13 SFH615 A3P PHOTO COUPLER SFH615A3C 1 IC802 13 STRF66 56P IC STR F6656 1 IC801 18 CB0152 JNX RES C F 1 5K OHM 1 6W 5 1 R833 18 CB0223 JNX RES C F 22K OHM 1 6W 5 1 R840 18 CB0332 JNX RES C F 3 3K OHM 1 6W 5 1 R838 18 CB0392 JNX RES C F 3 9K OHM 1 6W 5 1 R841 18 CD0102 JNX RES C F 1K OHM 1 4W 5 2 R805 R808 18 CD0272 JNX RES C F 2 7K OH...

Page 15: ...075 B00 WIRE BARE JUMPER 7 5MM 1 J471 41 WJ0100 B00 WIRE BARE JUMPER 10MM 3 J371 J654 J655 41 WJ0125 B00 WIRE BARE JUMPER 12 5MM 3 J361 J492 R831 41 WJ0145 B00 WIRE BARE JUMPER 14 5MM 1 J491 41 WJ0150 B00 WIRE BARE JUMPER 15MM 1 R812 41 WJ0155 B00 WIRE BARE JUMPER 15 5MM 2 J561 J562 41 WJ0175 B00 WIRE BARE JUMPER 17 5MM 2 J271 J281 41 WJ0180 B00 WIRE BARE JUMPER 18MM 1 J353 41 WJ0190 B00 WIRE BARE...

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