Canon imagePRESS C800 Series, Troubleshooting Manual

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Chapter 1
1-45
[Reference] Connectors connected by wire are as follows:
- J1221 of DC controller PCB and J1 of Riser PCB
- J1224 of DC controller PCB and J1805 of Relay PCB
Service work
1) Check if the following connectors are not disconnected. If no connector is disconnected, check other factors (disconnection of cable, PCB, unit, etc.)
- J1224 and J1221 of DC controller PCB
- J1 of Riser PCB
- J1805 of Relay PCB
2) Power-up the main power of the main body and check if the symptom does not occur. If the symptom does not improve, then check other factors.
1.1.3.2 Malfunction/Faulty Detection
1.1.3.2.1 "Place the originals again" is displayed due to disconnection of the connector (Multi-color image reader-H1)
0031-8356
[ Verified by Canon Inc. ]
Symptom
After placing the originals in the original tray of DADF and starting the copy, "Place the originals again" message may appear.
Cause
The above symptom occurs when the connector of the paper surface sensor [1] of the pickup roller unit [A] of DADF is disconnected.
F-1-1
Service work
1) Open the feeder cover and remove the 3 screws [2] and the inner cover [1].