Sansei TS5121F, Service Manual

Page: 14 / 30

Service Adjustments
-14-
48
40
37
36
30
25
24
20
13
12
10
1
+ +
MTS
KR
KL
C3439
C3436
C3404
C3412
C3408
C3413
C3416
C3417
C3418
C3424
C3427
C3401
C3432
J030
J031
1001
J092
D1021
JP3401
J101
J117
R65
R1912
J118
C042
C0
005
J125
J126
J127
J128
J129
R019
J028
J143
J141
1
JP029
J075
JW1
JW4
JP0
JP3402
55
R042
R041
C3414
J161
1
3
3
C34
R3411
R3422
R3407
C3407
R3421
C3421 C3422
C3433 C3434
C3431
IC3401
C3423
C3426
B6
PB1
R3433
R3432
R3426
J137
R3412
JP031
R033
R034
R037
R035
C3420
JP3404
JP3403
JP3405 JP1001
C3405
C3403
INPUT LEVEL 08
HI SEPARATION
21
LOW SEPARATION 34
ADJUST: - /+
CHOOSE:
▲▼
EXIT : MENU
1. Connect a signal to the antenna terminal with audio signal
of 1KHz at 100% modulated.
2. Connect a DC Volt-Meter to TP-317 ( pin-38 of IC3401)
and the ground.
3. Switch the TV set on, and 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
to the service mode.
SOUND LEVEL ADJUSTMENT
5. Adjust voltage to become DC 400mVrms±20mVrms at
TP317 by pressing the Cursor (or VOLUME) + or -
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 TP-317 (pin-38 of IC3401) and the ground.
Probe-B to TP-318 (pin-39 of IC3401) and the ground.
2. Turn on the TV set, and receive the multi sound programme.
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
TP-317(pin-38 of IC3401)
MAIN BOARD
(Solder side)
TP-318 (pin-39 of IC3401)
INPUT LEVEL 08
HI SEPARATION
21
LOW SEPARATION 34
ADJUST: - /+
CHOOSE:
▲▼
EXIT : MENU
5. Adjust the level of 300Hz at TP-317 (pin-38 of IC3401)
to become minimum level by pressing the / - or
/ - button on the remote control or TV set.
Minimum leakage
TP-317(R)
300Hz
IC3401
48
40
37
36
30
25
24
20
13
12
10
1
+ +
MTS
KR
KL
C3439
C3436
C3404
C3412
C3408
C3413
C3416
C3417
C3418
C3424
C3427
C3401
C3432
J030
J031
1001
J092
D1021
JP3401
J101
J117
R65
R1912
J118
C042
C0
005
J125
J126
J127
J128
J129
R019
J028
J143
J141
1
JP029
J075
JW1
JW4
JP0
JP3402
55
R042
R041
C3414
J161
1
3
3
C34
R3411
R3422
R3407
C3407
R3421
C3421
C3422
C3433 C3434
C3431
IC3401
C3423
C3426
B6
PB1
R3433
R3432
R3426
J137
R3412
JP031
R033
R034
R037
R035
C3420
JP3404
JP3403
JP3405
JP1001
C3405
C3403
TP-317(pin-38 of IC3401)
MAIN BOARD
(Solder side)
IC3401