d-Color MF4003/MF3303
L TROUBLESHOOTING > 17. IC PROTECTOR
L-155
(b) IC with over current protective function
ICP No.
Symbol
Target part name
When over current protective function works
Symptom in each load
Trouble code and
others
IC12
USBHB
USB hub board
No operation
-
IC13
-
Authentication unit
Unable to detect authentication unit
"Cannot find the connection with authentication
unit. Turn OFF/ON the main power switch after
the connection is found." display
-
IC69
IR CIS
CIS module
No operation
-
IC70
IR CIS
CIS module
No operation
-
DF CIS
DF CIS module
No operation
-
IC73
WLANB
Wireless LAN board
Extension network adapter installation error
CD262
IC76
FAXB
FAX board
FAX board error 5 (No fax board is installed.
Mistake in installation. Defective HW.)
CB005
IC77
-
Control panel
Control panel power not turned ON
-
IC79
-
Vendor
Unable to detect vendor
"Turn ON the power of the vendor" display
-
IC1E
USBHB
USB hub board
Unable to detect USB memory
-
(2) DC power supply
(a) ICP
ICP No.
Symbol
Target part name
When ICP trips
Symptom in each load
Trouble code and
others
F101
-
DC power supply circuit
No operation
-
FU101
F102
-
Heater circuit
The heater does not light up
C3425
C3825
C3826
C3922
C3925
C3926
C392B
FU181
(3) High voltage unit
(a) ICP
ICP No.
Symbol
Target part name
When ICP trips
Symptom in each load
Trouble code and
others
F101
-
• Charging and developing DC circuit
• Developing AC circuit
• Transfer circuit
Faulty image
-
(4) DF control board
(a) ICP
ICP No.
Symbol
Target part name
When ICP trips
Symptom in each load
Trouble code and
others
ICP1
-
3.3 V regulator in the DF control board
No operation
-
ICP2
-
5 V DC/DC converter in DF control
board
No operation
-
ICP3
PS19
Document empty sensor
No operation
-
17.2.2 PF-P20/PF-P21
(1) PC control board
(a) ICP
ICP No.
Symbol
Target part name
When ICP trips
Symptom in each load
Trouble code and
others
F1
M1
Drive motor
Tray 2 drive motor malfunction
C0103
Y119930-3
Service Manual
Summary of Contents for d-Color MF 4003
Page 1: ...Multifunction Digital Copier d Color MF4003 MF3303 Service Manual Version 2 0 Code Y119930 3 ...
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