Canon imagePRESS C1 Service Manual - page 750
Chapter 14
14-15
[ Case in the field ]
Description
Since a soiling, which seemed to be from a patch on the drum surface, appeared on the backside of paper, the HV8 PCB was replaced with a new one for
solution.
Field Remedy
1. Re-fit all the connectors of the HV8 PCB.
2. If the symptom still occurs, replace the PCB with a new one.
FM2-7193 HV8 PCB Assembly
14.3.1.5.4 Soiled back: A failure in cleaning the secondary transfer roller is caused
0018-4124
imagePRESS C1 P / imagePRESS C1 / Color Image Reader-H1 / imagePRESS C1 (CUSTOM) / imagePRESS C1+ (Printer) / imagePRESS C1+
[ Inspected by Canon Inc. ]
Description
Since soiled back occurred, the DC controller software was upgraded for solution.
Cause
Since the length of time during which the secondary transfer roller performed idle rotation with power being supplied was increased, a failure in cleaning the
roller occurred, ultimately causing the symptom.
Field Remedy
Check the version of the DC controller software; if it is earlier than Ver. 11.03, upgrade the software to Ver. 11.03 or later.
14.3.1.5.5 Dark spots appear on output image
0020-3110
imagePRESS C1 P / imagePRESS C1 / Color Image Reader-H1 / imagePRESS C1 (CUSTOM) / imagePRESS C1+ (Printer) / imagePRESS C1+
[ Case in the field ]
Description
Since a few dark spots [A] appeared on output images, the developing assembly was replaced and the toner discharge amount was increased by means of
service mode.
F-14-19
When the same symptom occurs, follow the procedure below.
Field Remedy
1. Replace the developing assembly of color corresponding to the dark spots.
2. In service mode (level 2) > COPIER > Option > BODY > DEVL-VHT, change the setting from '2' to '5' (the setting range is '1' to '5', the default is '2').
FM3-1211 Developing Assembly (Yellow)
FM3-1212 Developing Assembly (Magenta)
FM3-1213 Developing Assembly (Cyan)
FM3-1214 Developing Assembly (Black)
14.3.1.5.6 The poor picture by the attachment mistake of seal support plate (front, rear)
0014-9615
imagePRESS C1 P / imagePRESS C1 / imagePRESS C1+ (Printer) / imagePRESS C1+
Symptom
In the case of mistakenly attaching the seal support plate (front, rear) and printing solid color image in large quantity at one time, the soil of the waste toner may
occur at the both edges of image.
This symptom occurs only when using the A3 size paper or bigger.
Cause
In the case of mistakenly attaching the seal support plate (front, rear) and printing solid color image in large quantity at one time, there may be a space occurring
between the seal support plate and the scoop-up sheet. As a result, there is a case that the soil of the waste toner occurs on the print image due to the drop of waste
toner on the ITB.
Remedy in the field