Konica Minolta 7085/FORCE 85 Service Manual page 631

Warning
3
Classification
code
Wire F21-02
cleaning
abnormality
F21-03
F21-04
MODEL
7075/7085
SERVICE HANDBOOK
Causes
• PS42 (charging wire cleaning pad
limit) is not turned ON within
specified time after detection of
turning OFF of PS41 (charging wire
cleaning pad HP) at the start of
reversal operation (return), or PS41
is not turned ON within specified time
after turning ON of PS42. At this time,
an abnormal detection signal (blown
fuse) is detected.
M23 (charger cleaning) lock
detection. A motor lock signal is
detected during the cleaning pad
moving from the PS42 (charging wire
cleaning pad limit) side to the PS41
(charging wire cleaning pad HP) side.
After retry, the fifth motor lock signal
is detected.
• Check on excess over M18 (transfer/
separation cleaning) operation time
limit. When SW1 (main) has been ON
and PS11 (transfer/separation wire
cleaning pad HP) has been OFF,
PS11 is not turned ON within
specified time of home position
search operation (return) started by
turning ON of M18. At this time, an
abnormal detection signal (blown
fuse) is not detected.
• PS11 is not turned OFF within
specified time after start of reversal
operation (return). At this time, an
abnormal detection signal (blown
fuse) is not detected.
• Check on excess over M18
(transfer/separation
operation time limit. PS12 (transfer/
separation wire cleaning pad limit) is
not turned ON within specified time
after detection of turning OFF of
PS11 (transfer/separation wire
cleaning pad HP) at the start of
reversal operation (return), or PS11
is not turned ON within specified time
after turning ON of PS12. At this time,
an abnormal detection signal (blown
fuse) is not detected.
MANUAL REVISED EDITION
Operation in case of
warning occurrence
The machine stops
immediately and RL1
(main) is turned OFF.
cleaning)
DATE
5 - 17
Jan. 2002
3
ERROR CODE LIST
Estimated abnormal
parts
M23 (charger cleaning)
DCDB (DC drive board)
PRCB (printer control board)
PS41 (charging wire
cleaning pad HP)
PS42 (charging wire
cleaning pad limit)
M23 (charger cleaning)
DCDB (DC drive board)
PRCB (printer control board)
PS41 (charging wire
cleaning pad HP)
PS42 (charging wire
cleaning pad limit)
Charge control
plate cleaner
M18 (transfer/sepa-
ration cleaning)
ADUSDB (ADU
stand drive board)
PS11 (transfer/
separation wire
cleaning pad HP)
PS12 (transfer/
separation wire
cleaning pad limit)
Breaking of harness
Connector
connection failure
PAGE METHOD
5-17 REPLACEMENT