Teac-CT-M6828-S-Service-Manual电路原理图.pdf
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1、 SERVICE MANUAL Version 2- 68 cm CTV Effective: MAY 2000 CTM6828V2SERV RadioFans.CN 收音机爱 好者资料库 TECHNICAL BULLETIN 26-Jun-00 Page 1 of 1 MODEL: CT-M5930S, CT-M6828S, CT-F683 PROBLEM: RF Interference File: CTM5830 6828 683 rf interf tb.doc Some units of the first production lot for the models of refer
2、ence have been supplied with a low quality RF lead from the RF connector in the back panel to the tuner input. Those units may display diagonal interference lines on the picture mainly in VHF bands. Note that the braid of the good quality cable is very tight and totally covers the internal wire. Ins
3、tructions Replaced the faulty RF cable assembly using the part number 40252200111. Regards, Alcides Berta TEAC Australia Pty Ltd. RadioFans.CN 收音机爱 好者资料库 TECHNICAL BULLETIN 12-July-2000 Page 1 of 1 MODEL: CT-F683, CT-M6828S, CT-M5930 PROBLEM: I2C Mitsubishi chassis. Service Mode adjustments File: CT
4、-F683 CT-M6828 5930 RC tb.doc The following information applies to all Great Wall models using I2C Mitsubishi technology. A special type of remote control is necessary to access Service Mode adjustments, please refer to the figure. Accessing Service Mode 1- Press first button on the left of the FACT
5、ORY ON row (Button 1). The word Key is visible on the screen. 2- Press FACTORY button (Button 2). The first page of factory adjustments will be displayed. 3- Navigate between parameters and different pages using UP and DOWN buttons. Direct access to frequently used parameters is available from dedic
6、ated buttons, for example EW WIDTH, V AMPL, etc. 4- Adjust parameter values using VALUE+ and VALUE -. Leaving Service Mode 1- Press first button on the left of the FACTORY ON row (Button 1). The work Key is visible on the screen. 2- Press STANDBY button. 3- Turn POWER off from the front panel switch
7、 for at least 15 seconds. Note: The final version of remote control may be slightly different from the one used to prepare this bulletin. Regards, Alcides Berta TEAC Australia Pty Ltd. TECHNICAL BULLETIN 21-Jul-2000 Page 1 of 1 MODEL: CT-M6828S CT-F683 CT-M5930S PROBLEM: Audio noise File: CT M6828S
8、M5930S F683 noise tb.doc A humming noise is audible at low volume from the speakers and particularly from the headphone output (when available). The source of this noise is the vertical deflection circuit. Instructions 1- Delete the jumper W286 on the main PCB next to CN111 in the fly-back transform
9、er area. 2- Add a cable between the IF shielding can and the heat sink for the audio output IC. Regards, Alcides Berta TEAC Australia Pty Ltd. TECHNICAL BULLETIN 11-August-2000 Page 1 of 1 MODEL: CT-M6828S, CT-M5930 and CT-F683 PROBLEM: Incorrect resistor type File: CT-M6828S m oxide.doc An incorrec
10、t resistor type has been fitted in position R504 of the neck board in some units. A carbon film resistor having a light brown color body and mounted on the surface of the PCB can eventually ignite and burn the board. Instructions Replace the carbon film resistor in location R504 with a metal oxide t
11、ype. Separate the new resistor from the surface of the PCB by approximately 10 mm. Alcides Berta TEAC Australia Pty Ltd. Wrong type Carbon film resistor PN: 11347020512 47 Ohm, W Correct type Metal oxide resistor PN: 11347020575 47 Ohm, W CTM6828S VERSION 2I2C CHASSIS PART_NODESCRIPTIONQTY LOCATION
12、155-R83303-02-03REMOTE1 107-800455-4GRESONATOR 455 KHZ ET455Z PO TUNG1CF701 113-109005-17CARBON FILM RESISTOR 1 OHM 1/16W +-5%2R701,703 113-221005-17CARBON FILM RESISTOR 220 OHM 1/16W +-5%1R702 123-151350-93CERAMIC CAP. 150 PF 50V +-10% (NPO)2C701,702 127-105072-06ELECT CAP. 1 MFD 50V +-20% TAPING T
13、YPE1C703 130-134148-01SILICON DIODE IN41483D702-704 130-600101-0GINFRARED EMITTER EL-1L1 KODENS HI GUANG ZHOU XIONGGUANG1LED701 131-231815-0ATRANSISTOR 2SC1815 TOSHIBA1Q701 133-803428-12I.C. M34280M1 MITSUBISHI1IC701 172-726000-99BARE WIRE 54MM0.11 W701 190-R83301-02REMOTE P.C.B. (270499 REV.1)1 514
14、-200407-10SELF-TAPPING SCREW 2 X 7 B/T (HARDEN)1FOR HANDSET 774-002001-00BATTERY SPRING +VE & -VE1 774-R83301-00BATTERY SPRING (-VE)1 774-R83302-00BATTERY SPRING (+VE)1 810-041104-13POLYBAG 4 X 11 X 0.04MM W/RE-CYCLING MARK1FOR HANDSET 849-R83301-08RUBBER KEY PAD - ENG STD FOR MTSUBISHI IC1 900-R833
15、01-46R/TOP CAB-ENG STD/M.BLK SILVER 877C (FOR MITSUBISH IC) 1 902-R83301-01HANDSET REAR CAB - MATT BLK SPARY1 910-R83301-01BATTERY DOOR - MATT BLACK1 919-R83310-11REMOTE TOP DOOR - TEAC DESIGN (CT-M6828S)(RC-787)1 504-305006-10MACHINE SCREW 3 X 6 B/M (WHITE) 2 FOR POWER SWITCH MTG. 509-305012-00MACH
16、INE SCREW M3 X 12 K/M (6MM HEAD) BLACK 2 FOR JACK PLATE MTG. 514-400312-10SELF-TAPPING SCREW 4 X 12 B/A (HARDEN) 1 FOR HEAT SINK (A) TO FBT 514-400412-10SELF-TAPPING SCREW 4 X 12 B/T (HARDEN) 8 8 FOR SPEAKER MTG. 514-400425-10SELF-TAPPING SCREW 4 X 25 B/T (HARDEN) 10 FOR CABINET MTG. 514-400435-10SE
17、LF-TAPPING SCREW 4 X 35 B/T (HARDEN) 3 FOR CABINET MTG.(BOTTOM) 515-303408-10SELF-TAPPING SCREW 3 X 8 W/B/T (HARDEN) 1 FOR AC LINE CORD 515-303410-10SELF-TAPPING SCREW 3 X 10 W/B/T (HARDEN) 6 6 FOR POWER BOARD 515-303410-10SELF-TAPPING SCREW 3 X 10 W/B/T (HARDEN) 6 2-CHANNEL SETTING KNOB,1- FRONT CA
18、B. AND LENS 515-303410-10SELF-TAPPING SCREW 3 X 10 W/B/T (HARDEN) 0 2-REMOTE P.C.B.,1- VOLUME CHANNEL KNOB 515-303412-10SELF-TAPPING SCREW 3 X 12 W/B/T (HARDEN)13FOR MAIN PCB 524-932502-00CRT MTG.SCREW 7 X 35 VP (HARDEN)4FOR CRT MTG. 618-729E01-00PACKING PAD (532 X 64 X 164)MM2 622-882802-00FELT L24
19、0 X W17 X T0.5MM W/TAPE 17 7-F.CAB.,2- SPK.SIDE,8- BETWEEN CRT AND F.CAB. 630-238010-00FIBRE WASHER OD=23 , ID=8 T=1MM8FOR CRT MTG. 777-932501-00POWER KNOB SPRING IN DIM 10MM X L12MM1 800-829B11-00POLYFOAM (B) - TOP LEFT1 CTM6828S VERSION 2I2C CHASSIS PART_NODESCRIPTIONQTY LOCATION 800-829B12-00POLY
20、FOAM (B) - TOP RIGHT1 800-829B13-00POLYFOAM (B) - BOTTOM LEFT1 800-829B14-00POLYFOAM (B) - BOTTOM RIGHT1 810-052204-14POLYBAG 5 X 22 X 0.04MM W/RE-CYCLING MARK P/O MAT 1 FOR AC LINE CORD 826-432005-00FOAM SHEET - 43 X 20 X 0.5MM THK1FOR TOP 834-230802-00RUBBER WASHER OD=23, ID=8, T=24FOR RCA CRT 840
21、-011024-21PAD CORD L240 X W10 X T1 MM W/TAPE 1 1-SPK.SIDE (PEM95065) 840-051030-11RUBBER PAD (ONE SIDE W/TAPE) 4 FOR RCA CRT TO FRONT CABINET 840-082929-11RUBBER PAD (ONE SIDE W/TAPE) 1 FOR FRONT CABINET 896-882101-00POWER BOARD COVER (UL)1 920-932901-U0P.C.B. MTG. BRACKET1 929-821B01-00LED BRACKET1
22、 939-892001-00POWER KNOB ADAPTER 1 FOR POWER SWITCH 954-729A01-00STUD POST BLACK ABS6 954-882100-00AC LINE CORD CLIP1 954-882804-00HIGH VOLTAGE CABLE SPACER3FOR FBT 003-131315-0ETUNER 38.9 MHZ(WSP HYPER BAND) UV1315 PHILIPS (LOW JACK 30MM)1TUNER 105-109103-08FIXED INDUCTIVE COIL 1.0UH +-10% (WITTIS)
23、 2 (L601,602 FOR FRONT AV BOARD) 107-731500-0ISAW FILTER 31.5 MHZ B5308 NANYANG1SAW102 107-738915-00SAW FILTER 38.9 MHZ TSF5315 SANYO1SAW101 113-101005-17CARBON FILM RESISTOR 100 OHM 1/16W +-5%3R330,331,332 113-103005-17CARBON FILM RESISTOR 10K OHM 1/16W +-5%1R336 113-122005-17CARBON FILM RESISTOR 1
24、.2K OHM 1/16W +-5%1R334 113-220305-75METAL OXIDE FILM RESISTOR 22 OHM 1W +-5%1R337 113-221005-17CARBON FILM RESISTOR 220 OHM 1/16W +-5%1R335 113-391005-17CARBON FILM RESISTOR 390 OHM 1/16W +-5% 2 (R601,602 FOR FRONT AV BOARD) 113-393005-17CARBON FILM RESISTOR 39K OHM 1/16W +-5%1R333 123-101350-60CER
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