Sanyo C21LB25S - Specific MTS Adjustments (2)

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Service Adjustments with Replacing Memory IC(IC802)

-15-

6. Adjust voltage to become minimum reading by pressing

the VOLUME(+ -) button on the remote control or TV set.

7. To exit from the service mode, press the MENU button.

1. Connect a signal generator to TP-301(

side of C3407)

and the ground.

Signal output=15.734KHz, 100mVrms.

2. Connect a DC Volt-Meter to TP-317( + side of C3437) and

the ground.

3. Ground TP-20(pin-45 of IC201) with the jumper lead.

4. Switch the TV set on.

Press and hold the MENU button on the TV set, and press

“3” button on the remote control transmitter to enter the

service mode.

5. Select “FILTER” by pressing the CHANNEL UP/DOWN

button on the remote control or TV set.

MTS FILTER ADJUSTMENT

IC3401

MTS

TP-301

TP-317

IC201

IF /VIDEO/CHROMA/DEF.

TP-20

pin-45

(Service Mode)

INPUT LEVEL 25

STEREO VCO 23

FILTER 32

LOW SEPARATION 29

HI SEPARATION 26

SAP VCO 27

ADJUST: - /+

CHOOSE: ▲▼

EXIT : MENU

MAIN BOARD

1. Connect an oscilloscope:

Probe-A to TP-317(+ side of C3437) and the ground.

Probe-B to TP-318 (+ side of C3438) and the ground.

2. Switch the TV set on, and receive the multi sound program.

3. Press and hold the MENU button on the TV set, and press

“3” button on the remote control transmitter to enter to the