Olivetti d-Color MF4003 Service Manual page 415

d-Color MF4003/MF3303
2.4 P-5
Contents
Malfunction type
Malfunction code
Malfunction detection timing
Relevant parts
Procedure
1. Wipe clean the surface of the transfer belt with a soft cloth, if it is dirty.
2. Replace the transfer belt unit
3. Reinstall or reconnect IDCS1, connectors connecting between IDCS1-relay CN70-BASEB CN22E, if any of the foregoing parts is installed
or connected improperly.
4. Clean IDCS1, if it is dirty.
5. Check the connector between HVPS CN1-BASEB CN4E for proper connection.
6. Open/close the front door, run an image stabilization sequence, and select [Service Mode] -> [State Confirmation] -> [Level History 1] to
check the IDC value.
IDC1: IDCS1
If the value is 1.0 V or less, replace IDCS1.
7. Replace BASEB.
2.5 P-6, P-7, P-8, P-9
Contents
Malfunction type
Malfunction code
Malfunction detection timing
Relevant parts
Procedure
1. Check the setting value in [Max Image Density Adj] of [Service Mode] -> [Imaging Process Adjustment] and, if it is negative, readjust.
2. Check the drive transmission portion of the imaging unit and correct as necessary.
3. Clean IDCS1 window if dirty.
4. Clean the contact of the imaging unit connector if dirty.
5. Check the connector between HVPS CN1-BASEB CN4E for proper connection.
6. Replace the imaging unit.
7. Replace the transfer belt unit.
8. Replace HVPS.
9. Replace BASEB.
2.6 P-21
Contents
Malfunction type
Malfunction code
Malfunction detection timing
Relevant parts
Procedure
1. Wipe clean the surface of the transfer belt with a soft cloth, if it is dirty.
2. Replace the transfer belt unit
3. Replace the PH unit.
4. Replace BASEB.
Y119930-3
IDC sensor failure
P-5
• During IDC sensor light intensity correction, IDC sensor output is uncompleted.
• During IDC base surface detective control, sensor output voltage detected is under 0.7 V or over 3.35V.
• During image stabilization (gamma correction control), detected output value for IDC sensor did not go
below threshold (half the value of what is detected by IDC sensor on the belt surface) for three
consecutive times (position of the pattern end is not detected).
• Transfer belt unit
• IDC sensor (IDCS1)
• High voltage unit (HVPS)
• Base board (BASEB)
if the transfer belt is damaged.
Imaging unit (C) failure, Imaging unit (M) failure, Imaging unit (Y) failure, Imaging unit (K) failure
P-6, P-7, P-8, P-9
All density readings taken from the density pattern produced on the transfer belt are 1.0 g/m
photo receiver output) or less during max. density adjustment (Vg/Vdc adjustment).
• Imaging unit/Y,M,C,K
• Transfer belt unit
• IDC sensor (IDCS1)
• Base board (BASEB)
• High voltage unit (HVPS)
Color regist test pattern failure
P-21
• During pre-pattern detection, pre-pattern edge (start/ end point of effective area) is not detected within
the pre-pattern search area.
• During detection of regist pattern at vertical/horizontal direction, pattern edge (start/end point of effective
area) is not detected within the pattern search area of each unit.
• Transfer belt unit
• PH unit
• Base board (BASEB)
if the transfer belt is damaged.
L TROUBLESHOOTING > 2. MALFUNCTION CODE
L-17
2
(IDC sensor
Service Manual