Service manual

ELECTRIC PARTS LIST
4-33
3 DIS./ASSEMBLY
4 ELECTRIC PARTS LIST
Main boby
By-pass
feed
F18-60 PS34 (tray upper limit/BP) or PS35
(tray lower limit/BP) does not turn
ON within 10 seconds since the
upward or downward motion trig-
gered by activating M20 (up/down/
BP) has started while PS34 or
PS35 is turned OFF.
No error code is dis-
played on the opera-
tion panel. The code
is registered in data
collection.
M20 (up/down/BP)
PRCB (printer control
board)
PS34 (tray upper limit/BP)
PS35 (tray lower limit/BP)
Wire clean-
ing abnor-
mality
F21-01 The lock signal for M14 (charger
cleaning) is not detected when
more than 25 seconds have
passed since the return motion
(back to front) of M14 has started.
The machine stops
immediately and
turns OFF RL1
(main).
M14 (charger cleaning)
PRCB (printer control
board)
F21-02 The lock signal for M14 (charger
cleaning) is detected within 2 sec-
onds since the return motion (back
to front) of M14 has started.
M14 (charger cleaning)
PRCB (printer control
board)
F21-03 The lock signal for M14 (charger
cleaning) is not detected when
more than 25 seconds have
passed since the return motion
(back to front) of M14 has started
while re-try process is in motion
after lock detection.
F21-05 The lock signal for M10(transfer/
separation cleaning) is not
detected when more than 25 sec-
onds have passed since the return
motion (back to front) of M10 has
started.
M10 (transfer/separation
cleaning)
ADUDB (ADU drive board)
PRCB (printer control
board)
F21-06 The lock signal for M10 (transfer/
separation cleaning) is detected
within 2 seconds since the return
motion (back to front) of M10 has
started.
F21-07 The lock signal for M10 (transfer/
separation cleaning) is not
detected when more than 25 sec-
onds have passed since the return
motion (back to front) of M10 has
started while re-try process is in
motion after lock detection.
Classification
Warning
Code
Cause Machine response
Estimated
abnormal parts