Improper Lcd Display - Panasonic UF-8300 Service Manual

4.2.

Improper LCD Display

START
Check connectors on the SC PCB,
and PNL PCB.
Is LED/LCD displayed?
No
Does CNP501, pin 11 on the
SC PCB measure +5 VDC?
No
Replace the SC PCB.
Is the trouble
resolved?
Yes
END
• LCD Contrast Adjustment
1. Press the "FUNCTION", "7" keys.
2. Select "8: MAINTENANCE?", and press the "Set" key to enter the Maintenance mode.
3. Select "6: LCD BRIGHTNESS?", and press the "Set" key.
4. Press the " (Lighter)" key or "
5. Press the "Set" key or the "Stop" key.
Yes
Yes
No
Replace the Low
Voltage Power
Supply Unit.
(Darker)" key.
Does the display appear normal?
Yes No
Replace the LCD
Module.
Is the trouble resolved?
Yes
END
100
UF-8300/8200
UF-7300/7200
No
Replace the
Panel.