Teac-CT-M6840-Service-Manual电路原理图.pdf

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1、 SERVICE MANUAL CTM6840 68CM CTV Effective: JULY02 CTM6840SERV RadioFans.CN 收音机爱 好者资料库 Ver1.2 1 December 2001 1 ? B+ adjustment VCO & AFT Alignment NICAM Adjustment Electrical properties checking for chassis RF AGC adjustment Sub-brightness Adjustment White balance Adjustment Aging Adjustment of scr

2、een voltage and focus Sub-color & Sub-tint adjustment Pincushion and screen width adjustment Screen center & size adjustment (PAL) Screen center & size adjustment (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 pres

3、sing VOLUME DOWN key on the unit until the volume decrease to minimum level, then press the DISPLAY key on the remote handset (dont 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 enter the

4、 white balance alignment menu, ? ? ? ? ? ? Press “2” to enter picture geometry alignment menu for PAL system, ? ? !? ? ?!#?$?%? ?&? ? ? ? ? Press “3” to enter picture geometry alignment menu for NTSC system, ? ?#? !? ?#?$? ?!#?#?$?%? ?#?&? ?#? ?#? ? ? RadioFans.CN 收音机爱 好者资料库 Ver1.2 1 December 2001 2

5、 Press “4” to enter sharpness setting menu, ? ? ?(?50% sharpness in 3.58 system (TV)?)? ? ?(?50% sharpness in 3.58 system (AV)?*? ? ?+?50% sharpness in 4.43 system (TV)?*? ? ?+?50% sharpness in 4.43 system (AV)?*? ? ?,?Maximum sharpness?(-? ? ?#?Minimum sharpness?*? ? Press “5” to enter sound alignm

6、ent menu, ? #!.?#!?.?/? ?*?0$?1-.2?/? ?)?30?0$?1-.2?/? ?!-?%?$?4$?(? ?#?%?3? Press “6” to enter AGC and volume setting, ? ?-?3?)? ?-?HAFC setting.? ?&?&5?6?%?7?8? ?&?&5?6?%?7? ?*?Volume output level at 1%? ?)?Volume output level at 25%?*9? ?Volume output level at 50%?(*? Press “7” to enter system se

7、tting, ? ?.?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? BRT

8、X?Maximum brightness?(9? BRTN?Minimum brightness?*9? COLX?Maximum color?/-? COLN?Minimum color? Press “9” to enter picture alignment menu 2,? ? CNTC?50% contrast?)? BRTC?50% brightness?(9? COLC?50% color?+? TNTC?50% tint?+? COLP?Color level for PAL? COLS?Color level for SECAM?+? BRTS?Sub brightness

9、for SECAM? Ver1.2 1 December 2001 3 Press “0” to enter OSD setting menu,? ? OSD?Horizontal position of OSD?:? TXCX?OSD intensity when maximum contrast?(? RGCN?OSD intensity when minimum contrast? TNTX?Maximum tint level?/-? TNTN?Minimum tint level?/-? ? ? ? 1. Apply 110-240VAC(5V) to mains power inp

10、ut, and Philips standard testing pattern to RF input. 2. Adjust VR801 in STANDARD mode until voltage at TP2 (B+) is 112V 0.5V. ? ? 1. Apply a 38.9MHz signal to the IF input. 2. Monitor the DC voltage at pin 48 of IC201. 3. Adjust T201 until the voltage at pin 48 of IC201 becomes 4.62 +/- 0.2V (the p

11、icture 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

12、T1101 until the voltage at pin 15 of IC1101 becomes 2.5 +/- 0.1V. 4. Then check the waveform at pin 4 and 6 of P1103 and it must show correct audio signal. ? ?!? ? 1. Connect the detector shown below to collector of Q101. 2. Receive a grey scale signal with 70dB?V amplitude. 3. Adjust RFAGC item unt

13、il the output of the detector becomes 0.8Vpp ? ? ? ? ? ? ? ? ? ? ? Collector of Q101 To CRO Ver1.2 1 December 2001 4 ?#?$%&?#?$%? ?#?$%&?#?(?)? ?*? 1. Enter D-mode, and connect the probe of Oscilloscope to the conjunction between R217 and P201 (B-out). 2. Apply the Grey-scale/Colour-bar (NTSC signal

14、) to the AV input, in STANDARD status. 3. Select CNTC to adjust the sub-contrast, until that the amplitude “A” is 2.5V ?as shown below. 4. Select COLC to adjust the sub-colour by tuning the amplitude of “a” and “d” to the same. 5. Select TNTC to adjust the sub-tint by tuning the amplitude of “b” and

15、 “c” to the same. 6. Apply the Grey-scale/Colour-bar (PAL signal) to the AV input, in STANDARD status. 7. Select COLP to adjust the sub-colour by tuning the amplitude of “a”, “b”, “c” and “d” to the same. ? ? ?&?#&?#?$%$? ? ? 1. Receive a crosshatch pattern. 2. Adjust the “FOCUS” VR on the flyback t

16、he make the picture clear. 3. Enter 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 f

17、ull 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 white pattern at STANDARD status. 2. Use a color analyzer to measure the black side of the screen. By changing the value of BCUT and GCUT,

18、 set the reading of the color analyzer to x=284, y=299. 3. Then measure the white side of the screen. By changing the value of BDRV and GDRV, set the reading of the color analyzer to x=284, y=299. 4. Repeat step 2&3 until you can get the correct reading for both black and white sides. ? ?( ?&? ?( &?

19、+ ?,? 1. Receive a crosshatch pattern. 2. Adjust VR302 until the vertical line become straight. 3. Adjust VR303 for horizontal size. ? a b c d Ver1.2 1 December 2001 5 ?-?( &?(?)? 1. Apply the crosshatch pattern (PAL signal) to the RF input, in STANDARD status. 2. Select HPOS50 to adjust the Horizon

20、tal center. 3. Select VPOS50 to adjust the Vertical center. 4. Select HIGH50 to adjust the Vertical amplitude. 5. Select VLIN50 to adjust the vertical linearity. 6. Select VSC50 to adjust the vertical S-correction. -?( &?#? 1. Apply the crosshatch pattern (NTSC signal) to the RF input, in STANDARD s

21、tatus. 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

22、key “0”, then choose OSD item and adjust the OSD horizontal position. 2. Enter D-mode and press key “2”, then choose the OSDV50 item and adjust the OSD horizontal position. 3. Enter D-mode and press key “3”, then choose the OSDV60 item and adjust the OSD horizontal position. Ver1.2 1 December 2001 6

23、 ? VCDM0 (default value: 68) BIT Item 0 System switch: 0 : normal identify mode 1 : weak signal identify mode 1 White peak suppress: 0: on 1: off 2,3 ABL gain 00: -0.74v 01: -0.64v 10: -0.37v 11: -0.12v 4,5 ABL start point 00: -0.01v 01: -0.11v 10: -0.3v 11: -0.45v 6 CW-SW: TB1238N, pin 29 Fsc CW ou

24、tput 0 : AUTO, 1 : 4.43M 7 In force system mode, the status of color killer when weak signal 0: on 1: off VCDM1 (default value: 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 38MH

25、z 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 011: 38.9MHz 010: 39.5MHz 001: 45.75MHz 000: 58

26、.75MHz 7 No use MODE0 BIT Item 0 0: normal AV 1: SCART 1 0: English 1: English + Chinese 2 Low Noise Amp. at tuner: 0: off 1: on 3 No use 4, 5, 6, 7 Muting time when power on: 8ms ? Ver1.2 1 December 2001 7 MODE1 BIT Item 0 Logo: 0: disable 1: TCL Logo 1 No. of channel: 0: 49 1: 99 2 No use 3 Menu b

27、ackground 0: disable 1: black background 4 No. of AV 0: 1 1: 2 5 SECAM 0: off 1: on 6 D-mode 0: enable 1: disable 7 No use MODE2 BIT Item 0 Teletext 0: off 1: on 1 NICAM & IGR 0: off 1: on 2 No use 3 No 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

28、(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:

29、50KHz 1: 25KHz 4 When no signal: 0: search channel by changing VT 1: use memorized VT 5 Power on mode: 0: previous 1: force standby 6 No use 7 No use PART NUMBERDESCRIPTION QTY LOCATION 08-02916T-CR2ASSY - CRT BD (S.S) 10-1N4148-ABXDIODE 1N4148 (SWITCHING)3D501, D502, L501 11-A562TM-0BXTRANSISTOR 2S

30、A562TM-01Q507 11-SC1815-YBXTRANSISTOR 2SC1815Y3Q502, Q504, Q506 11-SC4544-0AXTRANSISTOR 2SC4544 (NPN)3Q501, Q503, Q505 18-CB0102-JNXRES. C.F. 1K OHM 1/6W +/-5%1R515 18-CB0272-JNXRES. C.F. 2.7K OHM 1/6W +/-5%1R514 18-CB0561-JNXRES. C.F. 560 OHM 1/6W +/-5%3R501, R505, R510 18-CB0681-JNXRES. C.F. 680 O

31、HM 1/6W +/-5%8R502, R503, R506, R508, R509, R511, R513, R522 18-FE0272-JNXRES. M.O. 2.7K OHM 1/2W +/-5%3R519, R520, R521 18-FG0183-JHXRES. M.O. 18K OHM 2W +/-5%3R516, R517, R518 25-BCB471-M1XCAP. ELEC 470 UF 16V +/-20%1C506 25-BLA100-M1XCAP. ELEC 10 UF 250V +/-20%1C504 26-AMK102-KRXCAP. CER 1000 PF

32、2KV +/-10% R1C505 26-EBP103-ZFXCAP. CER 0.01UF 50V +80-20% F2C508, C509 26-EBP391-JCXCAP. CER. 390PF 50V +/-5% CH2C501, C502 26-EBP471-JCXCAP. CER 470 PF 50V +/-5% CH1C503 34-R220K2-1CXCOIL CHOKE 22 UH +/-10%1L502 34-R569K2-1CXCOIL CHOKE 5.6 UH +/-10%1L503 35-237250-00XFERR. BEAD HF702FOR C508 (L505

33、 & L506) 40-02501C-CRGP.C.B. CRT BD1 41-WJ0050-B00WIRE BARE JUMPER 5MM1L504 41-WJ0060-B00WIRE BARE JUMPER 6MM3R504, R507, R512 41-WJ0075-B00WIRE BARE JUMPER 7.5MM1J503 46-10967W-01XPIN BASE *1 TJC1-1A1P501, FOR CRT GROUNDING HOUS. 46-30615H-04XHS 4P24 460 F/W TJC3-4Y/SCN-41P502, FOR M. BD P421 46-37

34、030H-05XHS 5P 2468#24 450 TJC3-5Y/SCN1P503, FOR M. BD P201 47-265540-0U7SOCKET CRT GZS10-2-4 (C.B.)1S501 02-GND029-XX0ASSY-CRT GND WIRE & HOUS.(29)1 36-294960-017DEGAUSSING XC-74A-3100-TCL 291 42-61308F-XX2SPEAKER 8 OHM 8W2SP601, SP602 44-29OFLS-SJ2ACRT A68QBT892X50 (AUST)1CRT01 46-26514H-04XHS 4P A

35、/B 500/13 RBGW TJC1-4Y1P411H, FOR D.Y COIL 46-27580H-02XHS 2P22 600/7 F/W TJC3-2Y1P602H, FOR M.BD P602 46-27580H-02XHS 2P22 600/7 F/W TJC3-2Y1P601H, FOR M.BD P601 54-113971-0UEPVC TUBE #6 L=160MM2FOR SPEAKER CONNECTORS 54-114000-00XFELT TAPE 150X19MM4FOR (F.CAB) SPEAKER 54-205140-000SPACER CRT MOUNT

36、ING T=2MM4MTG CRT TO F.CAB 54-314740-0X0CRT FIBRE SHEET T=0.8MM4MTG CRT TO F.CAB 55-2906FC-0CNFRONT CABINET1 56-2906FB-0HAPUSH BUTTON1 56-2906LE-0HCLENS1 56-2906PK-0HAPOWER KNOB1 59-130460-00XRUBBER PAD (25MMX7MM)6 59-312160-000SPONGE CUSHION8MTG SPK. TO F.CAB 62-216340-0UAHOLDER POWER CORD1 62-2699

37、40-0HAPOWER SW. ADAPTER1 62-357060-0UNSUPPORT POST2 63-B40150-AB3S/T SCREW B 4 X 15 AB (BLACK)4MTG SUPPORT POST TO F. CAB 63-H60250-AB4S/T SCREW H 6 X 25 AB4MTG CRT TO F. CAB 63-W30100-AB4S/T SCREW W 3 X 10 AB3MTG PUSH BUTTON & FRONT CAB. 63-W30100-AB4S/T SCREW W 3 X 10 AB1MTG LENS & FRONT CAB. 63-W

38、30140-HS4S/T SCREW W 3 X 14 HS8MTG SPK. TO F. CAB 65-A60180-20EEXT. TOOTH WASHTER 6 X 18 X 24MTG CRT TO F. CAB 67-216790-0E0SPRING CRT 6MMX50MMX0.6MM2 67-250450-0E0SPRING KNOB1 08-HS46F0-M13FASSY - IR HANDSET BG 10-1N4148-ABXDIODE 1N4148 (SWITCHING)5D1502, D1503, D1504, D1505, D1507 11-0BC337-0BXTRA

39、NSISTOR BC337-40 (NPN)1Q1501 13-9028F0-23PIC TC9028-023 (IR TRANS.)1IC1501 14-IRE05B-XX0INFARED EMITTING DIODE1D1501 18-CB0229-JNXRES. C.F. 2.2 OHM 1/6W +/-5%1R1502 18-CB0682-JNXRES. C.F. 6.8K OHM 1/6W +/-5%1R1501 25-HBB470-M1XCAP. ELEC 47UF 10V +/-20%1C1503 26-EBP101-JCXCAP. CER 100 PF 50V +/-5% CH

40、2C1501, C1502 40-2909NT-RMBP.C.B. REMOTE HANDSET1 45-COS455-KY0CER RESONATOR 455 KHZ1X1501 49-HS46F0-00XRUBBER PAD KEYS1 Page 1 of 7CTM6840 PART NUMBERDESCRIPTION QTY LOCATION 55-HS46FB-0HACASE LOWER - REMOTE HANDSET1 55-HS46FD-0HADOOR BATT. - REMOTE HANDSET1 55-HS46FT-0HACASE UPPER - REMOTE HANDSET

41、1 58-HS46F2-7UIINLAY IR TRANSM.BD (B/G)1 63-B26060-BT2S/T SCREW B 2.6 X 6 BT1 67-26968X-0E2BATT. TERMINAL (+/-)1 67-310280-0E2SPRING - BATTERY (-)1 67-310290-0E2SPRING - BATTERY (+)1 74-009022-60CPOLYBAG HANDSET (9CMX22CM)1 08-29064T-MANASSY - MAIN BD 02-IRR001-XX0IR RECEIVER MODULE1IR001 07-389VI5-

42、NX4TUNER UV1355-BK2(BG/HB/IEC/5V)1TU101 10-0BY228-F0XDIODE BY228 (FAST RECTIFIER)1D411 10-1N4001-EBXDIODE 1N4001 (RECTIFIER)1D301 10-1N4148-ABXDIODE 1N4148 (SWITCHING)13 D041, D042, D043, D044, D211, D212, D213, D221, D223, D280, D632, D711, D721 10-55C12V-DBXDIODE ZENER 12V 1/2W +/-5%2D731, D732 10

43、-55C4V7-DBXDIODE ZENER 4.7V 1/2W +/-5%1D222 10-55C5V1-DBXDIODE ZENER 5V1 1/2W +/-5%2D061, D101 10-55C8V2-DBXDIODE ZENER 8V2 1/2W +/-5%1D471 10-CW574C-DJXDIODE CW574CS1D111 10-TFR104-FBXDIODE TFR104 (FAST RECOVERY)4D412, D421, D431, D441 11-0BC337-0BXTRANSISTOR BC337-40 (NPN)1Q062 11-2N3904-0BXTRANSI

44、STOR 2N3904 (NPN)1Q091 11-DD1556-0AXTRANSISTOR 3DD1556 (HORIZ)1Q412 11-SA1015-YBXTRANSISTOR 2SA1015Y6Q061, Q211, Q241, Q633, Q721, Q934 11-SC1815-YBXTRANSISTOR 2SC1815Y26 Q001, Q002, Q031, Q032, Q051, Q201, Q251, Q252, Q261, Q451, Q631, Q711, Q911, Q912, Q913, Q921, Q922, Q923, Q931, Q932, Q933, Q963, Q964, Q971, Q981, Q991 11-SC3779