Service manual

187

SEP 2006

Ver. 1.1

DP-8020E/8020P/8016P

4.2. Improper LCD Display

Note:

LCD Display Brightness Adjustment

To adjust the brightness of the LCD display, press, and while holding down the "CLEAR" key, keep

pressing the "ORIGINAL SIZE", or the "COPY SIZE" key until the desired brightness is achieved.

ORIGINAL SIZE: Dimmer

COPY SIZE : Brighter

Replace the SC PCB.

Is the trouble

resolved?

Replace the

Power Supply

Unit.

Check connectors: CN52 (SC PCB),

and CN220 (PNL1 PCB).

Is LED/LCD displayed?

Does the display appear normal?

Replace the LCD

Module.

Does CN52, pin 6 on the SC

PCB measure +5 VDC?

Ye s

Ye s N o

START

END