Canon iPF700, Service Manual

Page: 129 / 202

Chapter 6
6-3
cable.
If continuity of the cable between the power supply PCB and the power supply connector is abnormal, replace
the cable.
4) Replace the power supply PCB.
5) Replace the operation panel.
6) Replace the main controller PCB.
6.1.2.6 The printer is shut down during power-on or printing.
0014-0919
<Example of symptom>
The printer is shut down during power-on or printing.
<Cause>
Defective printhead, head relay PCB, or carriage relay PCB
<Countermeasure>
1) Replace the printhead.
2) Replace the head relay PCB.
3) Replace the carriage relay PCB.
4) Replace the main controller PCB.
6.1.2.7 The printer cannot be connected over the network.
0014-0925
<Example of symptom>
The printer cannot print over the network.
<Cause>
Defective cable, incompatible hub, or defective main controller PCB
<Countermeasure>
1) Cable check
Reconnect the LAN cable.
2) Check communication settings.
If the hub is incompatible, auto negotiation may fail.
Select [Ethernet Driver] from the [Interface Setting] menu on the operation panel, and then set the network
communication speed and transfer mode according to the hub specifications.
3) Replace the hub.
Explain to the customer that the printer is normal.
4) Replace the main controller PCB.
6.1.2.8 Printing error (Ink remains.)
0014-0934
<Example of symptom>
Step 1
-The interface is not recognized.
-Test printing is normal but printing from the host computer is abnormal.
Step 2
-Nothing is printed.
-Both test printing and printing from the host computer are abnormal.
-Texture appears in the image.
<Cause>
Defective host computer, defective interface cable, extended interface board, dirty carriage rail, defective
printhead, defective purge unit, defective linear scale, defective carriage unit, defective head relay PCB,
defective carriage relay PCB, or defective main controller PCB
<Countermeasure against trouble in step 1 >
1) Interface cable
Visually check the connector. If the connector is damaged or deformed, replace it.
2) Personal computer