Canon imageRUNNER ADVANCE 4551i Service Manual page 89

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Table of Contents

*1: The sensor of the Reader of the host machine.

*2: Limited functions jam is a jam for preventing an original to be left inside the machine when a problem which requires the

machine moves to limited functions mode occurs. If an error occurs for some reasons, a jam message is displayed to make the

user to perform jam removal. The troubleshooting from this jam cord is not possible.

■ Power Supply

The power supply lines are shown below. This machine power is supplied from the host machine.

■ Stamp Operation (If equipped with the Stamp Unit)

When the stamp function is selected on the FAX mode or scan mode, a document is stamped indicating that a document is

already read or sent.

The Stamp solenoid (SL2) drives the Stamper. The Stamp solenoid (SL2) is driven by the signal from the ADF driver PCB (PCB1).

Paper pickup error

Limited function*2

Host machine

Registration sensor

Delivery reversal sensor

Copyboard cover open/closed sensor 1

(At copy mode, select the Pickup Cas-

Copyboard cover open/closed sensor 1

(other than those above)

Cover open/closed sensor

Registration sensor

Document set sensor

Registration sensor

Delivery reversal sensor

ADF driver PCB

2. Technology

Troubleshooting