16.3 Solution; S-1: Ccd Clamp/Gain Adjustment Failure; P-5: Idc Sensor (Front) Failure; Idc Sensor (Back) Failure - Konica Minolta bizhub C450 Service Manual

16. Malfunction code

16.3 Solution

16.3.1

S-1: CCD clamp/gain adjustment failure

Scanner Assy
Step
1 Correct the harness connection between PWB-A and PWB-C if faulty.
2 Check for possible extraneous light and correct as necessary.
3 Clean the lens, mirrors, CCD surface, and shading sheet if dirty
4 Correct reflective mirror of the Scanner if faulty, or change Scanner.
5 Change PWB-A.
6 Change PWB-C.
16.3.2

P-5: IDC Sensor (Front) failure

16.3.3 P-28 IDC Sensor (Back) failure
IDC / Registration Sensor /1 (PC8)
IDC / Registration Sensor /2 (PC9)
Step
1 Wipe clean the surface of the Transfer Belt with a soft cloth, if it is dirty
2 Change the Image Transfer Belt Unit if the Transfer Belt is damaged.
3 Reinstall or reconnect PC8 or PC9 if it is installed or connected improperly.
4 Clean PC8 or PC9 if it is dirty
Open and close the Left Door, run an image stabilization sequence, and select "State Confirma-
tion" → "Level History 1" to check the IDC value. IDC1: PC8, IDC2: PC9
5
If the value is 1.0 V or less, change PC8 or PC9.
6 Change PWB-MC
320
Relevant Electrical Parts
CCD Sensor Board (PWB-A)
Image Processing Board (PWB-C)
Action
Relevant Electrical Parts
Control Board (PWB-MC)
Image Transfer Belt Unit
Action
Field Service Ver. 1.0 Mar. 2005