Ricoh SP 8400DN Field Service Manual page 1351

Ricoh a3 size black and white laser printer.

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Operation panel

[A]: LEDs on the controller board

Check the condition (lit, off, blinking) of the LED on the controller board.

Normal situation: POSTCODE LED 8 [A] and BIOS LED [B] blink once every second

The LED remains lit or is off when there is a problem with the CPU.

[B]: Abnormal mode: LEDs on the controller board

POSTCODE LEDs 1 to 8 on the controller board are lit constantly

1. For self-diagnosis code (BIOS).

2. After the BIOS starts up, POSTCODE 4,5,7 turn off and POSTCODE 1,2,3 ,6 turn on and

POSTCODE 8 blinks. POSTCODE 8 remains lit or off when there is a problem with the

- LED is lit when the BIOS is running.

LED on the controller board blinks once every second

Fuse 3 on the IPU

LED on the controller board does not blink

How to determine the cause

6.Troubleshooting

Chapters

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