Kyocera ECOSYS FS-1020MFP Service Manual page 84

Code Contents
6020 Abnormally high fuser
thermistor temperature
Fuser thermistor detects a
temperature higher than
210°C/410°F for 3 seconds
6030 Broken fuser thermistor
wire
Average input AD given by the
thermistor is less than 2 for
300msec.
6400 Fixing control zero cross
signal error
The ZCROSS signal does not
reach the main PWB for more
than 2 seconds.
F000 Communication Error
between Main PCB and
Panel PCB
Communication failure during
the start-up or operation.
* : Only 3 in 1 25/26 ppm
model, 4 in 1 20/21,
25/26 ppm model
RAM R/W error
F020
The average AD value of the
sensor input is smaller than 2
during SLP_RLY is off and
300 ms.
Causes
Deformed connec- If the I/F connector pins of the fuser unit and
tor pin. the main unit are deformed owing to foreign
matters, such as paper dusts, replace the
connectors or the units including the con-
nectors.
Shorted fuser Replace the fuser unit (see page 1-5-17).
thermistor.
Defective power Replace the power source PWB
source PWB. (see page 1-5-18).
Defective main Replace the main PWB and check for cor-
PWB. rect operation (see page 1-5-18).
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Fuser unit and main PWB (YC15)
Broken fuser Replace the fuser unit (see page 1-5-17).
thermistor wire.
Fuser thermostat Replace the fuser unit (see page 1-5-17).
triggered.
Defective main Replace the main PWB and check for cor-
PWB. rect operation (see page 1-5-18).
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Power source PWB (YC103) and main PWB
(YC12)
Defective power Replace the power source PWB
source PWB. (see page 1-5-18).
Defective main Replace the main PWB and check for cor-
PWB. rect operation (see page 1-5-18).
Defective main Turn the main power switch off/on to restart
PWB. the machine. If the error is not resolved,
replace main PWB (see page 1-5-18).
Defective opera- Replace the scanner unit and check for cor-
tion PWB. rect operation (see page 1-5-10).
Defective main Turn the main power switch off/on to restart
PWB. the machine. If the error is not resolved,
replace main PWB (see page 1-5-18).
1-4-8
2M4/2M5/2M6/2M7-1
Check procedures/
corrective measures