03800500-280C Defective Printhead Nozzle; 03800500-2F2F/03800500-2F30 Head Management Sensor Error - Canon imageprograf ipf700 Service Manual

<Probable fault location>
Printhead, head relay PCB, carriage relay PCB, carriage unit, or main controller PCB
<Countermeasure>
1) Replace the printhead.
2) Head relay PCB
3) Cable continuity check
If continuity of the cable between the carriage relay PCB and the main controller PCB is abnormal, replace the
cable.
4) Replace the carriage relay PCB.
5) Replace the carriage unit
6) Replace the main controller PCB.

6.1.4.23 03800500-280C Defective printhead nozzle

<Cause>
Many non-discharging nozzles were detected.
<Probable fault location>
Printhead or head management sensor
<Countermeasure>
1) Clean the printhead.
2) Replace the printhead.
3) Replace the head management sensor.

6.1.4.24 03800500-2F2F/03800500-2F30 Head management sensor error

<Cause>
The head management sensor detected an ink discharge error.
A sensor sensitivity error was detected during head management sensor position adjustment.
<Probable fault location>
Print head, head management sensor, or main controller PCB
<Countermeasure>
1) Replace the print head.
2) Visual check
Remove foreign substances from the head management sensor if any.
3) Replace the head management sensor.
4) Cable continuity check
If continuity of the cable between the head management sensor and the main controller PCB is abnormal, replace
the cable.
5) Replace the main controller PCB.
6.1.4.25 03810101-2501/03810102-2502/03810103-2503/03810104-2500/03810106-
2506/03810106-2507 No ink error
<Cause>
No ink status was detected in the ink tank.
<Probable fault location>
Ink tank, ink tank unit, or main controller PCB
<Countermeasure>
1) Replace the ink tank.
2) Replace the ink tank unit.
3) Replace the main controller PCB.
Chapter 6
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