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23. IC protector
Field Service Ver. 2.0 Jul. 2009
904
TROUBLESHOOTING
23. IC protector
23.1 Outline
• To increase product safety, this MFP has an IC protector (ICP) installed in each board.
ICP is a component that protects IC. If the amount of the current supplied to the electrical
parts such as motor exceeds the set level, ICP trips to protect IC from over current.
The following list contains ICP installed in each board, related devices, and symptoms
that occur when ICP trips.
23.2 IC protector list
23.2.1
Main body
A. Printer control board
ICP No. Symbol
Target part name
When ICP trips
Symptom in each load
Trouble code
and others
ICP1
M9
Toner supply motor/Y
Abnormally low toner density
caused by toner supply motor/Y
and its adjustment failure
C-2555/
C-255B/C-2563
M10
Toner supply motor/M
Abnormally low toner density
caused by toner supply motor/M
and its adjustment failure
C-2553/
C-255A/C-2562
ICP2
M11
Toner supply motor/C
Abnormally low toner density
caused by toner supply motor/C
and its adjustment failure
C-2551/
C-2559/C-2561
M12
Toner supply motor/K
Abnormally low toner density
caused by toner supply motor/K
and its adjustment failure
C-2557/
C-255C/C-2564
ICP3
M20
Waste toner agitating motor
Waste toner agitating motor’s
failure to turn
C-2204
ICP4
M21
1st transfer pressure retraction
motor
Transfer belt pressure/retraction
failure
C-2152
ICP5
M13
Toner cartridge motor Y/M
Toner empty detection
(TC replacement message)
—
M14
Toner cartridge motor C/K
Toner empty detection
(TC replacement message)
—
ICP6
FM3
Cooling fan motor
Cooling fan motor’s failure to turn C-5356
FM7
Toner suction fan motor
Toner suction fan motor’s failure
to turn
C-2350
FM13
Paper cooling fan motor
Paper cooling fan motor’s failure
to turn
C-0351
ICP7
FM16
Rear side cooling fan motor
Rear side cooling fan motor’s
failure to turn
C-2354
SD1
Gate switch solenoid
Paper exit section jam
—
ICP8
FM101
Tucking fan motor/1
Occurrence of tucking problem
—
FM102
Tucking fan motor/2
Occurrence of tucking problem
—
FM103
Tucking fan motor/3
Occurrence of tucking problem
—
Service Manual Y110571-1
Summary of Contents for d-color MF651
Page 1: ...d Color MF651 d Color MF551 d Color MF451 Color Printer SERVICE MANUAL Code Y110571 1...
Page 24: ...MEASURES TO TAKE IN CASE OF AN ACCIDENT S 22 Blank Page...
Page 27: ...d Color MF651 d Color MF551 d Color MF451 Color Printer SERVICE MANUAL Code Y110571 1...
Page 1053: ...UPDATING STATUS DATE UPDATED PAGES PAGES CODE 10 2009 1ST EDITION 1053053 Y110571 1...