Noblex 21TC657, Service Manual

Page: 15 / 30

VIDEO MODE
MENU
VOL
VOL
CH
NOBLEX
IMAGE
Service Adjustments
-15-
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 (pin-39 of IC3401) 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.
TP-318 (L)
Minimum leakage
4KHz
INPUT LEVEL 08
HI SEPARATION
21
LOW SEPARATION 34
ADJUST: - /+
CHOOSE:
▲▼
EXIT : MENU
FINE TUNING
- +
To return to normal TV mode, press the MENU button on
the TV set or remote control handset. (Or will automatical-
ly return to normal TV mode after 5 seconds.)
Fine tuning service mode
Fine tuning data value will be automatically stored in memory.
Service Adjustment-3
This adjustment is used to do a fine tuning of the channels with poor reception after they have been stored by the
automatic tuning.
This function is available for one channel only and the fine-tuned channel is memorized into IC802 (EEPROM).
FINE TUNING
1. Enter the Service Menu
While pressing the MENU button on the television,
press the “4” or MENU button on the remote control
unit. The Service Menu now appear.
2. Service Adjustments:
Press and hold the or VOLUME - button
on the remote control handset or TV set to make fine
tuning adjustment. Press and hold the
button for higher frequency tuning, and press and hold
the VOLUME - for lower frequency tuning.
[ Entering the Service Menu ]
VIDEO MODE
MENU
VOL
VOL
CH
NOBLEX
IMAGE
VIDEO MODE
MENU
VOL
VOL
CH
CH
NOBLEX
IMAGE
VOLUME -
CHANNEL UP
CHANNEL DOWN
[ Service Adjustment ]
MENU
[ Exit from the Service Menu ]