Kyocera TASKalfa 3051ci, Service Manual

Page: 199 / 317

2L6/2N6/2N5/2N4
1-4-198
F040 Communication error
between Main PWB and
Print engine Main PWB
1. Turn the main power swtch off and after
5 seconds, then turn power on.
2. Repair or replace the wire from the
engine PWB, that may be grounded.
(Check short-circuit between 5V and
3.3V.)
3. Check that the FFC wire connecting
between the main PWB (YC3) and the
engine PWB (YC46) is normal and, if
necessary, re-insert.Or, replace the FFC
wire.
4. If not corrected, replace the main PWB
(see page 1-5-72).
Engine PWB
1. Check the engine software and upgrade
to the latest, if necessary.
2. Replace the engine PWB (see page 1-5-
80).
HDD Replace the HDD (see page 1-5-119).
F041 Communication error
between Main PWB and
Scanner engine Main PWB
1. Turn the main power swtch off and after
5 seconds, then turn power on.
2. Check that the wires between the main
PWB and the ISC PWB are normal.
3. If not corrected, replace the main PWB
(see page 1-5-72).
ISC PWB Replace the ISC PWB.
F050 Print engine ROM check-
sum error Engine software Install the latest engine software.
Engine PWB
1. Turn the main power swtch off and after
5 seconds, then turn power on.
2. Confirm that the EEPROM has been
properly installed.
3. If not corrected, Replace the engine
PWB (see page 1-5-80).
F051 Scanner engine ROM
checksum error Scanner software Install the latest scanner software.
ISC PWB
1. Turn the main power swtch off and after
5 seconds, then turn power on.
2. Confirm that the EEPROM has been
properly installed.
3. If not corrected, Replace the ISC PWB.
F278 Power supply in drive sys-
tem error
The main power
switch was turned
off before the
power switch is
pressed. Shutdown
due to a power
failure
Turn the main power swtch off and after 5
seconds, then turn power on.
(Before turning power off, verify that the
power key has been pressed and the power
indicator has gone off, then switch the main
power switch.)
Code Contents Related parts
Check procedures/
corrective measures