Kyocera FS-1040, Service Manual

Page: 52 / 131

2M2/2M3
1-4-6
(3) Self diagnostic codes
If the part causing the problem was not supplied, use the unit including the part for replacement.
Release is performed by power supply OFF/ON.
Code Contents Causes
Check procedures/
corrective measures
0100 Backup memory read/write
error (NOR)
Flash returns an abnormal
status.
Defective flash
memory. Replace the main PWB and check for cor-
rect operation (see page 1-5-7).
Defective main
PWB. Replace the main PWB and check for cor-
rect operation (see page 1-5-7).
0120 MAC address data error
For data in which the MAC
address is invalid.
Defective flash
memory. Replace the main PWB and check for cor-
rect operation (see page 1-5-7).
0190 Backup memory error
(engine)
Unable to read the main PWB
IC.
Defective flash
memory. Replace the main PWB and check for cor-
rect operation (see page 1-5-7).
Defective main
PWB. Replace the main PWB and check for cor-
rect operation (see page 1-5-7).
0630 Scan DMA error
Unable to transfer DMA.
Defective main
PWB. Replace the main PWB and check for cor-
rect operation (see page 1-5-7).
2000 Main motor error
Pulse is not detected after
1000msec.
Motor won’t stabilize after
300msec.
Defective connec-
tor cable or poor
contact in the con-
nector. Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
main motor and Relay PWB (YC4)
Relay PWB and main PWB (YC14).
Defective drive
transmission sys-
tem of motor. Check if the gears rotate smoothly. If not,
grease the bushes and gears. Check for
broken gears and replace if any.
Defective motor. Replace the main motor.
Defective main
PWB. Replace the main PWB and check for cor-
rect operation (see page 1-5-7).
4000 Polygon motor synchronize
error
Polygon motor is not stabi-
lized within 15 s since the
motor is activated.
After polygon motor is stabi-
lized, the ready signal is not
detected for 7 s continuously.
Defective connec-
tor cable or poor
contact in the con-
nector. Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Polygon motor and main PWB (YC17)
Defective polygon
motor. Replace the laser scanner unit
(see page 1-5-12).
Defective main
PWB. Replace the main PWB and check for cor-
rect operation (see page 1-5-7).
4200 BD stability error
The BD signal is not detected
for 1000 ms after processing
the compulsion lighting.
At the interrupt in VSYNC, the
BD error is detected continu-
ously for 10 times in 400 ms
intervals.
Defective connec-
tor cable or poor
contact in the con-
nector. Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Laser scanner unit (YC1) and main PWB
(YC5)
Defective APC
PWB. Replace the laser scanner unit
(see page 1-5-12).
Defective main
PWB. Replace the main PWB and check for cor-
rect operation (see page 1-5-7).