Specifications

8.14 Distorted Image or Missing BD Signal

Image distortion occurs when the paper fails to smoothly move

through the transfer process or if a malfunction occurs in the

scanning assembly.

If the beam detect (BD) signal is missing, this distinctive pattern

prints before an engine fault occurs and the message appears.

1. Inspect the following DC Controller board connectors for damage

or missconnection. Replace any FRU that is damaged.

This connector . . .

Should connect

to . . . Comment

J211 Main motor Plugs into J131 on

the motor board.

J201 Paper feed unit Plugs into feed unit

controller.

J205 Scanner assembly Motor and BD circuit

J206 Scanner assembly Laser diode

2. Perform this step only if there is a distorted image.

Inspect the condition of the oblique feed rollers and pressure

springs. If you see any surface deterioration or rust, replace the

paper feed unit. See Section 2.2 for the location of the oblique

feed rollers.

3. Swap the following:

• DC control board

• Paper feed unit

• Pickup motor

• Main motor

• Scanner assembly

FIPs For Fixing Image Defects 8–11