Panoramic TVP-2905AS, Service Manual

Page: 15 / 29

Service Adjustments
-15-
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 ]
[ Exit from the Service Menu ]
MENU
MENU
VOLUME -
[ Service Adjustment ]
MENU CH - VOL +
MENU
6. Select “HI SEPARATION” by pressing the CHANNEL
UP/DOWN button on the remote control or TV set.
7. Adjust the 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