Noblex 1 113 549 00, Service Manual

Page: 14 / 36

Service Adjustments with Replacing Memory IC(IC802)
-14-
1. Connect a signal generator to TP-301(- side of C3407)
on the Main Board and the ground. Signal output=300Hz,
150mVrms.
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 to the
service mode.
SOUND LEVEL ADJUSTMENT
(Service Mode)
5. Adjust voltage to become DC 500mVrms±10mVrms by
pressing the /-) button on the remote control or
TV set.
6. To exit from the service mode, press the MENU button.
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. 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.
4. Select “STEREO VCO” by pressing the CHANNEL
UP/DOWN button on the remote control or TV set.
STEREO VCO ADJUSTMENT
5. Adjust the frequency to become 15.625KHz ± 0.1KHz by
pressing the VOLUME (+/-) button on the remote control or
TV set.
6. To exit from the service mode, press the MENU button.
(Service Mode)
IC3401
MTS
INPUT LEVEL 25
STEREO VCO
23
FILTER 32
LOW SEPARATION 29
HI SEPARATION 26
SAP VCO 27
ADJUST: - /+
CHOOSE:
▲▼
EXIT : MENU
TP-301
TP-317
IC201
IF /VIDEO/CHROMA/DEF.
TP-20
pin-45
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
IC201
IF /VIDEO/CHROMA/DEF.
TP-20
pin-45
MAIN BOARD
MAIN BOARD