Canon imagePRESS C800 Series, Troubleshooting Manual

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Chapter 1
1-44
Service work
[Reference] Explain to the customer that setting the paper upside down might improve the symptom.
1) Set Service Mode (Lv2) > Mode List > COPIER > Adjust > FEED-ADJ > PFIX-FAN to "2".
("0" by default)
The change of the value increases the wind intensity from the pre-fixing feed attraction fan
[Note] Change of this setting makes the operating noise a bit louder.
2) Output the image having shown the symptom, and check that the symptom does not occur.
1.1.3 Malfunction
1.1.3.1 No Power
1.1.3.1.1 Main power does not turn on even the main power switch is turned ON
0031-5551
[ Manual-related ]
Description
The machine cannot operate when the main power is turned ON.
Field Remedy
If the machine cannot operate when the main power is turned ON, check the breaker. If the breaker is switched to the OFF position, do not attempt to turn ON the
breaker yourself, and be sure to contact your local authorized Canon dealer.
1.1.3.1.2 No display appears on LCD due to disconnection of connectors
0031-7866
[ Verified by Canon Inc. ]
Symptom
On powering-up of the main power of the main body, only the main power indicator [1] and the subpower supply lamp [2] at the control panel may be lit and the
main body may not start.
Cause
The symptom occurs when any of the following connectors at the back side of the main body is disconnected.
- J1224[1] and J1221[2] of the DC controller PCB [A]
- J1 [3] of Riser PCB [B]
- J1805 [4] of Relay PCB [C]