Sansei TS5129T, Service Manual

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1LG4B10Y0020A
1
C3432
C3427
C3424
C3418
C3417
C3416
C3413
C3411
C3408
C3412
J3401
C3436
C3439
C3452
C3451
KFF
C3423 C3426
C3421 C3422
R3426
R3411
R3432
R3433
R3421 R3422
C3433 C3434
C3431
C3406
C3407
R3406
R3407
D3401
C3414
KIF
IC3401
1. Receive the channel with audio 1KHz 100% modulation
signal.
2. Connect a DC Volt-Meter to KFF pin-2 ( pin-38 of IC3401)
and the ground.
3. Set the Surround OFF. Press and hold the MENU button
on the TV set, and press “3” button on the remote control
transmitter to enter the service mode.
SOUND LEVEL ADJUSTMENT
5. Adjust voltage to become DC 400mVrms±20mVrms at
KFF pin-2 by pressing the VOLUME (+/-) button on the
remote control or TV set.
6. To exit from the service mode, press the MENU button.
1. Connect an oscilloscope:
Probe-A to KFF Pin-2 (pin-38 of IC3401) and the ground.
Probe-B to KFF Pin-1 (pin-39 of IC3401) and the ground.
2. Turn on the TV set, and receive the multi sound programme.
Set the Surround OFF.
3. Press and hold the MENU button on the TV set, and press
“3” button on the remote control transmitter to enter the
service mode.
4. Select “LOW SEPARATION” by pressing the CHANNEL
UP/DOWN button on the remote control or TV set.
STEREO SEPARATION ADJUSTMENT
KFF pin-1
MTS BOARD
(Solder side)
KFF pin-2
5. Adjust the level of 300Hz at KFF pin-2 (pin-38 of IC3401)
to become minimum level by pressing the VOLUME (+/-)
button on the remote control or TV set.
Minimum leakage
KFF pin-2 (R)
300Hz
IC3401
Service Adjustments
INPUT LEVEL
HI SEPARATION
LOW SEPARATION
08
21
34
ADJUST : -
/
+
CHOOSE :
▲▼
EXIT : MENU
INPUT LEVEL
HI SEPARATION
LOW SEPARATION
08
21
34
ADJUST : -
/
+
CHOOSE :
▲▼
EXIT : MENU
1
1LG4B10Y0020A
1
C3432
C3401
C3427
C3424
C3418
C3417
C3416
C3413
C3411
C3408
C3412
C3404
J3401
C3436
C3439
R3401
R3402
C3452
C3451
MTS
KGG
C3423
C3421
C3422
R3426
R3411
R3421
R3422
C3433
C3434
C3431
C3406
C3407
R3406
R3407
J3402
J3403
D
C3
KIF
J3404
C3411
MTS BOARD
IC3401