Sanyo C29LK41S Service Manual page 15

Service Adjustments
SOUND LEVEL ADJUSTMENT
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.
INPUT LEVEL 08
HI SEPARATION 21
LOW SEPARATION 34
ADJUST: - /+
CHOOSE: ▲▼
EXIT : MENU
5. Adjust voltage to become DC 400mVrms±20mVrms at
TP317 by pressing the VOLUME(+/-) button on the remote
control or TV set.
6. To exit from the service mode, press the MENU button.
STEREO SEPARATION ADJUSTMENT
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.
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 VOLUME(+/ -)
button on the remote control or TV set.
TP-317
(pin-38 of IC3401)
TP-317
(pin-38 of IC3401)
TP-318 (pin-39 of IC3401)
MAIN BOARD
(Solder side)
TP-317(R)
Minimum leakage
300Hz
-15- -15-
IC3401
MAIN BOARD
(Solder side)
IC3401