Troubleshooting; Outline; Outline Of Troubleshooting; Troubleshooting By The Phenomenon - Canon imageprograf ipf700 Service Manual

6.1 Troubleshooting

6.1.1 Outline

6.1.1.1 Outline of Troubleshooting

1. Overview
Targets of troubleshooting are classified into the troubles displayed on the LCD (i.e., warnings, errors, and
service calls) and the troubles not displayed on the LCD.
Warnings and errors are displayed on the printer's LCD along with a code comprising alphanumeric characters.
2. Precautions for Troubleshooting
1) Check the environmental conditions and the media used.
2) Before starting troubleshooting, check that the connectors and cables are connected properly.
3) If you repair the printer with its external panel detached without disconnecting the AC cord from the outlet,
take great care to prevent electric shock and short-circuiting of PC boards.
4) Countermeasures to take after completion of troubleshooting are described starting with the most probable
component that can cause the trouble determined by troubleshooting. If there are two or more equally
probable components, countermeasures are described starting with the component that requires the easiest
repair. After performing each countermeasure step, carry out test printing to check whether the problem has
been solved. If not solved, try the next countermeasure step.
5) After completion of troubleshooting, check that all the necessary connectors and screws have been installed
securely.
6) After completion of replacement or repair of a component, be sure to carry out test printing to make sure that
the trouble has been solved.

6.1.2 Troubleshooting by the Phenomenon

6.1.2.1 Incorrect Value Check Value

<Cause>
The value entered in "IP Address", "Subnet Mask", or "Default G/W" after selecting [Interface Setting]>[TCP/
IP]>[IP Setting] is invalid.
<Probable fault location>
Operation method or Main Controller PCB
<Countermeasure>
1) Operation check
Correct the value in "IP Address", "Subnet Mask", or "Default G/W" and check whether the message disappears.
2) Replace the Main Controller PCB.

6.1.2.2 Load roll.

<Cause>
In the roll media mode, the media sensor detected absence of media.
<Probable fault location>
Operation method, media sensor, or main controller PCB
<Countermeasure>
1) Operation check
Check the roll media to check whether the message changes.
2) Visual check
Remove foreign substances from the feed roller if any.
3) Media sensor
Select [SERVICE MODE]>[I/O DISPLAY] to check for normal operation. If the operation is abnormal, replace
the media sensor.
4) Cable continuity check
If continuity of the cable between the media sensor and the main controller PCB is abnormal, replace the cable.
5) Replace the main controller PCB.
Chapter 6
0013-1941
0014-0909
0014-0911
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