d-Color MF4003/MF3303
L TROUBLESHOOTING > 3. TROUBLE CODE
L-44
Relevant electrical parts
• Scanner home sensor (PS21)
• Scanner motor (M9)
• CPU board (CPUB)
• Base board (BASEB)
Procedure
1.
Correct or change the scanner drive (pulley, gear, belt) if it is faulty.
2.
Correct the scanner motor set screw if loose.
3.
Adjust [Image Position: Leading Edge] and [Sub Scan Zoom Adj.].
4.
Check the connector between M9-BASEB CN9E for proper connection and correct as necessary.
5.
Check the connector between PS21-BASEB CN8E for proper connection and correct as necessary.
6.
Check CPUB for proper installation and correct as necessary.
7.
PS21 I/O check, sensor check
• Control signal: BASEB CN8E-6 (ON)
• Location of electrical component: 23-K
8.
M9 operation check
• Control signal: BASEB CN9E-1 to 4
• Location of electrical component: 22-K
9.
10.
BASEB F10E or F16E conduction check.
11.
3.12.4 C6704
Contents
Trouble type
C6704: Image input time out
Rank
C
Trouble detection condition Image data is not input from the scanner to the CPU board (CPUB).
Trouble isolation
Scanner
Relevant electrical parts
• CIS module (IR CIS)
• CPU board (CPUB)
• Base board (BASEB)
Procedure
1.
Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Memory Bus Check] -> [Scanner -> Memory], and
conduct the memory bus function.
2.
Check the connector between IR CIS-BASEB CN6 for proper connection and correct as necessary.
3.
Check CPUB for proper installation and correct as necessary.
4.
5.
6.
3.12.5 C6751
Contents
Trouble type
C6751: CCD clamp/gain adjustment failure
Rank
B
Trouble detection condition
• The adjustment value is 0 or 255 during a CCD clamp adjustment.
• The peak value of the output data is 64 or less during a CCD gain adjustment.
Trouble isolation
Scanner
Relevant electrical parts
• CIS module (IR CIS)
• CPU board (CPUB)
• Base board (BASEB)
Procedure
1.
Check the connector between IR CIS-BASEB CN6 for proper connection and correct as necessary.
2.
Check CPUB for proper installation and correct as necessary.
3.
Check for possible extraneous light and correct as necessary.
4.
5.
6.
3.12.6 C6752
Contents
Trouble type
C6752: ASIC clock input error (front side)
Rank
C
Trouble detection condition When starting the machine, verification on reading and writing the predetermined value for CPU (image
processing section) on CPU board (CPUB) was conducted, and verification failure was detected.
Trouble isolation
Scanner
Relevant electrical parts
• CIS module (IR CIS)
• CPU board (CPUB)
• Base board (BASEB)
Service Manual
Y119930-3
Summary of Contents for d-Color MF 4003
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