Service manual

4 QMS 3260/4032 Laser Printer - Base Engine Technical Manual

Release Version 11-97

Diagnostic Mode and the Control Panel

To enter Diagnostic Mode

1. Press and hold [1] and [3] while you switch on printer main power.

2. When the Control Panel LCD displays

Chn-00 Fun-00,

as shown below, release [1] and [3].

The printer is now in Diagnostic Mode.

To exit Diagnostic Mode

1. If a Diagnostic Output subroutine is currently running, press [0] to stop the subroutine.

2. Switch off printer main power.

3. If you are finished with Diagnostics, disconnect the Control Panel from P410 on the MCU PWB.

4. Reconnect the Control Panel to P421 on the ESS Mother PWB.

5. Reinstall the Control Panel into the Top Cover.

SER775X

SER776X