Canon imagePRESS C1 Service Manual - page 749
Chapter 14
14-14
F-14-18
14.3.1.5 Smudged/Streaked
14.3.1.5.1 Yellow vertical stripes on copy images/blank image on PG test chart printouts: PF-A board is faulty
0016-2167
imagePRESS C1 P / imagePRESS C1 / Color Image Reader-H1 / imagePRESS C1+ (Printer) / imagePRESS C1+
[ Inspected by Canon Inc. ]
Description
Since the PF-A PCB mounted with the Main Controller PCB was faulty, yellow vertical stripes appeared in copying and blank image occurred when
outputting GP test charts in service mode.
- The PF-A board is used to process printer output images.
Field Remedy
1. Disconnect the PF-A board from the Main Controller PCB and clean the terminal of the board with lint-free paper impregnated with alcohol; then re-fit
the board to the PCB.
When re-fitting, follow the steps below to prevent faulty connection of the connector.
1-1. After re-fitting the PF-A board, put the edge of a ruler on the edges of boards while holding the PF-A board and check if the PF-A board is prominent
from the other boards; if so, push it to the main board again so that it can fit firmly.
1-2. While holding the PF-A board, tighten the screw in the opposite side of the terminal.
1-3. While holding the PF-A board, tighten the screw in the terminal side.
1-4. Put the edge of the ruler again on the edges of the boards, and check if the PF-A board is prominent from the other boards; if so, go back to Step 1-1.
1-5. When fixing the controller box cover, firstly tighten the screw that is at the upper right of the box when viewed from the rear side of the machine. Secondly
tighten a screw to the long circler screw hole at the bottom right, and then tighten all the other screws.
2. If the symptom still occurs, replace the PF-A board with a new one (by referring to the procedure described in Step 1).
FM2-7353 PF-A Board
14.3.1.5.2 Soiled back: Transfer roller B3 in Secondary transfer mount assembly is soiled
0016-2918
imagePRESS C1 P / imagePRESS C1 / Color Image Reader-H1 / imagePRESS C1+ (Printer) / imagePRESS C1+
[ Case in the field ]
Description
Since soiled back occurred, the secondary transfer mount assembly was replaced with a new one for solution.
Field Remedy
Check to see if the transfer roller B3 found in the secondary transfer mount assembly is soiled; if so, replace the secondary transfer mount assembly with a
new one.
Note: Basically, the transfer roller B3 has to be replaced as the whole secondary transfer mount assembly. When only the transfer roller B3 is replaced with
a new one, replace the 2 cleaning brushes with new ones at the same time. If the cleaning brushes are not replaced, a soiling on the brushes transfer to the
new transfer roller B3, causing the symptom again.
FM2-2485 Secondary Transfer Mount Assembly
FC6-1644 Transfer Roller B3
FC6-1645 Cleaning Brush
14.3.1.5.3 Soiled back (patch mark) appears: HV8 PCB is faulty
0016-9575
imagePRESS C1 P / imagePRESS C1 / Color Image Reader-H1 / imagePRESS C1+ (Printer) / imagePRESS C1+