Sanyo C21LB25S - Specific MTS Adjustments (3)

Service Adjustments with Replacing Memory IC(IC802)
-16-
5. Adjust level of 300Hz at TP-317 (+ side of C3437) to
become minimum level by pressing the VOLUME(+/ -)
button on the remote control or TV set.
Minimum leakage
TP-317(R)
300Hz
6. Select “HI SEPARATION” by pressing the CHANNEL
UP/DOWN button on the remote control or TV set.
7. Adjust level of 4KHz at TP-318 (+ side of C3438) to
become minimum level by pressing the VOLUME (+/-)
button on the remote control or TV set.
8. To exit from the service mode, press the MENU button.
7. Adjust frequency of the counter to become 78.125KHz
±0.5KHz by pressing the VOLUME (+/-) button on the
remote control or TV set.
8. To exit from the service mode, press the MENU button.
TP-318 (L)
(Service Mode)
INPUT LEVEL 25
STEREO VCO 23
FILTER 32
LOW SEPARATION 29
HI SEPARATION 26
SAP VCO 27
ADJUST: - /+
CHOOSE: ▲▼
EXIT : MENU
1. Connect a frequency counter to TP-317(+ side of C3437)
and the ground.
2. Ground TP-20 (pin-45 of IC201) with the jumper lead.
3. Ground TP-316(+ side of C3411) with the jumper lead
through 1M Ω resistor.
4. Switch the TV set on.
5. 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.
6. Select “SAP VCO” by pressing the CHANNEL UP/DOWN
button on the remote control or TV set.
SAP VCO ADJUSTMENT
(Service Mode)
INPUT LEVEL 25
STEREO VCO 23
FILTER 32
LOW SEPARATION 29
HI SEPARATION 26
SAP VCO 27
ADJUST: - /+
CHOOSE: ▲▼
EXIT : MENU
IC3401
MTS
TP-317
MAIN BOARD
TP-316
IC201
IF /VIDEO/CHROMA/DEF.
TP-20
pin-45
Minimum leakage
4KHz