Teac CTM6828S User manual

SERVICE MANUAL
Version 2-68 cm CTV
Effective: MAY 2000 CTM6828V2SERV

TECHNICAL BULLETIN 26-Jun-00
Page 1of 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 reference 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.
Instructions
Replaced the faulty RF cable assembly using the part number 40252200111.
Regards,
Alcides Berta
TEAC Australia Pty Ltd.

TECHNICAL BULLETIN 12-July-2000
Page 1of 1
MODEL: CT-F683, CT-M6828S, CT-M5930
PROBLEM:
I2C Mitsubishi chassis. Service Mode adjustments
File: CT-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 FACTORY 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
dedicated 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 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 1of 1
MODEL: CT-M6828S CT-F683 CT-M5930S
PROBLEM:
Audio noise
File: CT M6828S 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 transformer 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 1of 1
MODEL: CT-M6828S, CT-M5930 and CT-F683
PROBLEM: Incorrect resistor type
File: CT-M6828S m oxide.doc
An incorrect 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 type. 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, ½ W
Correct type
Metal oxide resistor
PN: 11347020575
47 Ohm, ½ W

CTM6828S VERSION 2 I2C CHASSIS
PART_NO
DESCRIPTION
QTY
LOCATION
155-R83303-02-03
REMOTE 1
107-800455-4G RESONATOR 455 KHZ ET455Z PO TUNG 1
CF701
113-109005-17 CARBON FILM RESISTOR 1 OHM 1/16W +-5% 2
R701,703
113-221005-17 CARBON FILM RESISTOR 220 OHM 1/16W +-5% 1
R702
123-151350-93 CERAMIC CAP. 150 PF 50V +-10% (NPO) 2
C701,702
127-105072-06 ELECT CAP. 1 MFD 50V +-20% {TAPING TYPE} 1
C703
130-134148-01 SILICON DIODE IN4148 3
D702-704
130-600101-0G
INFRARED EMITTER EL-1L1 KODENS HI "GUANG ZHOU XIONGGUANG"
1
LED701
131-231815-0A TRANSISTOR 2SC1815 TOSHIBA 1
Q701
133-803428-12 I.C. M34280M1 MITSUBISHI 1
IC701
172-726000-99 BARE WIRE 54MM 0.11
W701
190-R83301-02 REMOTE P.C.B. (270499 REV.1) 1
514-200407-10 SELF-TAPPING SCREW 2 X 7 B/T (HARDEN) 1
FOR HANDSET
774-002001-00 BATTERY SPRING +VE & -VE 1
774-R83301-00 BATTERY SPRING (-VE) 1
774-R83302-00 BATTERY SPRING (+VE) 1
810-041104-13 POLYBAG 4" X 11" X 0.04MM W/RE-CYCLING MARK 1
FOR HANDSET
849-R83301-08 RUBBER KEY PAD - ENG STD {FOR MTSUBISHI IýC} 1
900-R83301-46
R/TOP CAB-ENG STD/M.BLK SILVER 877C (FOR MITSUBISH IýC)
1
902-R83301-01 HANDSET REAR CAB - MATT BLK SPARY 1
910-R83301-01 BATTERY DOOR - MATT BLACK 1
919-R83310-11 REMOTE TOP DOOR - TEAC DESIGN (CT-M6828S)(RC-787) 1
504-305006-10 MACHINE SCREW 3 X 6 B/M (WHITE) 2
FOR POWER
SWITCH MTG.
509-305012-00 MACHINE SCREW M3 X 12 K/M (6MM HEAD) BLACK 2
FOR JACK PLATE
MTG.
514-400312-10 SELF-TAPPING SCREW 4 X 12 B/A (HARDEN) 1
FOR HEAT SINK
(A) TO FBT
514-400412-10 SELF-TAPPING SCREW 4 X 12 B/T (HARDEN) 8
8 FOR SPEAKER
MTG.
514-400425-10 SELF-TAPPING SCREW 4 X 25 B/T (HARDEN) 10
FOR CABINET
MTG.
514-400435-10 SELF-TAPPING SCREW 4 X 35 B/T (HARDEN) 3
FOR CABINET
MTG.(BOTTOM)
515-303408-10 SELF-TAPPING SCREW 3 X 8 W/B/T (HARDEN) 1
FOR AC LINE
CORD
515-303410-10 SELF-TAPPING SCREW 3 X 10 W/B/T (HARDEN) 6
6 FOR POWER
BOARD
515-303410-10 SELF-TAPPING SCREW 3 X 10 W/B/T (HARDEN)
6
2-CHANNEL
SETTING KNOB,1-
FRONT CAB. AND
LENS
515-303410-10 SELF-TAPPING SCREW 3 X 10 W/B/T (HARDEN) 0
2-REMOTE P.C.B.,1-
VOLUME
CHANNEL KNOB
515-303412-10 SELF-TAPPING SCREW 3 X 12 W/B/T (HARDEN) 13
FOR MAIN PCB
524-932502-00 CRT MTG.SCREW 7 X 35 VP (HARDEN) 4
FOR CRT MTG.
618-729E01-00 PACKING PAD (532 X 64 X 164)MM 2
622-882802-00 FELT L240 X W17 X T0.5MM W/TAPE
17
7-F.CAB.,2-
SPK.SIDE,8-
BETWEEN CRT
AND F.CAB.
630-238010-00 FIBRE WASHER OD=23 , ID=8 T=1MM 8
FOR CRT MTG.
777-932501-00 POWER KNOB SPRING IN DIM 10MM X L12MM 1
800-829B11-00 POLYFOAM (B) - TOP LEFT 1

CTM6828S VERSION 2 I2C CHASSIS
PART_NO
DESCRIPTION
QTY
LOCATION
800-829B12-00 POLYFOAM (B) - TOP RIGHT 1
800-829B13-00 POLYFOAM (B) - BOTTOM LEFT 1
800-829B14-00 POLYFOAM (B) - BOTTOM RIGHT 1
810-052204-14
POLYBAG 5" X 22" X 0.04MM W/RE-CYCLING MARK {P/O MAT}
1
FOR AC LINE
CORD
826-432005-00 FOAM SHEET - 43" X 20" X 0.5MM THK 1
FOR TOP
834-230802-00 RUBBER WASHER OD=23, ID=8, T=2 4
FOR RCA CRT
840-011024-21 PAD CORD L240 X W10 X T1 MM W/TAPE 1
1-SPK.SIDE
(PEM95065)
840-051030-11 RUBBER PAD (ONE SIDE W/TAPE) 4
FOR RCA CRT TO
FRONT CABINET
840-082929-11 RUBBER PAD (ONE SIDE W/TAPE) 1
FOR FRONT
CABINET
896-882101-00 POWER BOARD COVER (UL) 1
920-932901-U0 P.C.B. MTG. BRACKET 1
929-821B01-00 LED BRACKET 1
939-892001-00 POWER KNOB ADAPTER 1
FOR POWER
SWITCH
954-729A01-00 STUD POST BLACK ABS 6
954-882100-00 AC LINE CORD CLIP 1
954-882804-00 HIGH VOLTAGE CABLE SPACER 3
FOR FBT
003-131315-0E
TUNER 38.9 MHZ(WSP HYPER BAND) UV1315 PHILIPS (LOW JACK 30MM)
1
TUNER
105-109103-08 FIXED INDUCTIVE COIL 1.0UH +-10% (WITTIS) 2
(L601,602 FOR
FRONT AV
BOARD)
107-731500-0I SAW FILTER 31.5 MHZ B5308 "NANYANG" 1
SAW102
107-738915-00 SAW FILTER 38.9 MHZ TSF5315 SANYO 1
SAW101
113-101005-17 CARBON FILM RESISTOR 100 OHM 1/16W +-5% 3
R330,331,332
113-103005-17 CARBON FILM RESISTOR 10K OHM 1/16W +-5% 1
R336
113-122005-17 CARBON FILM RESISTOR 1.2K OHM 1/16W +-5% 1
R334
113-220305-75 METAL OXIDE FILM RESISTOR 22 OHM 1W +-5% 1
R337
113-221005-17 CARBON FILM RESISTOR 220 OHM 1/16W +-5% 1
R335
113-391005-17 CARBON FILM RESISTOR 390 OHM 1/16W +-5% 2
(R601,602 FOR
FRONT AV
BOARD)
113-393005-17 CARBON FILM RESISTOR 39K OHM 1/16W +-5% 1
R333
123-101350-60
CERAMIC CAP. 100 PF 50V +-10% (SL TYPE) "SMART GOOD"
2
C333,334
123-103370-90 CERAMIC CAP. 0.01 MFD 50V +80 -20% 2
(C601,602 FOR
FRONT AV
BOARD)
123-104270-90 CERAMIC CAP. 0.1 MFD 25V +80 -20% 2
C337,338
123-271350-60 CERAMIC CAP. 270 PF 50V +-10% (SL TYPE) 2
C330,331
123-331350-60 CERAMIC CAP. 330 PF 50V +-10% (SL TYPE) 1
C332
126-104071-01 MYLAR CAP. 0.1 MFD 50V +-10% 1
C340
126-224071-01 MYLAR CAP 0.22 MFD 50V +-10% 1
C339
127-226042-06 ELECT CAP. 22 MFD 16V +-20% {TAPING TYPE} 1
C341
130-410120-01 ZENER DIODE 12V 1/2W +-5% "TEMIC" 1
ZD330
133-104565-33 I.C. TDA4565 PHILIPS 1
IC330
133-108843-33 I.C. TDA8843 PHILIPS 1
IC101
160-102255-27 PIN CONNECTOR 2 PINS PLUG STRAIGHT (UL) (S.H.S) 4
CN333,335,(CN601,
602 FOR FRONT
AV BOARD)
160-104255-27 PIN CONNECTOR 4 PINS PLUG (SHS) 1CN334