2L6/2N6/2N5/2N4-3
1-4-137
6950
Fuser IH PWB communica-
tion error
No response is received in 30
ms since a command is sent
to IHCPU.
A checksum error is detected
10 times in succession.
Power source PWB
1. Confirm that the wiring connector is
firmly connected and, if necessary, con-
nect the connector all the way in.
Power source PWB (YC9) and Feed
PWB 1(YC4)
Power source PWB (YC3) and Fuser IH
PWB (YC1)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. If the +24V output is not given by the
power source PWB (YC9), replace the
power source PWB.
Feed PWB
1. Confirm that the wiring connector is
firmly connected and, if necessary, con-
nect the connector all the way in.
Power source PWB (YC3) and Fuser IH
PWB (YC1)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. If the +24V output is not given by the
feed PWB1 (YC27), replace the feed
PWB1.
Fuser IH PWB
1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Fuser IH PWB(YC4) and Engine PWB
(YC26)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the Fuser IH PWB (see page 1-
5-96).
Engine PWB
1. Check the engine software and upgrade
to the latest, if necessary.
2. Replace the engine PWB (see page 1-5-
80).
6960
Current PWB error
The power current is greater
than 1A for 5 seconds contin-
uously despite that 500W was
indicated as the fuser power
during power-up.
(45 ppm/ 55 ppm model only)
Current PWB
1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Current PWB(YC17) and Feed PWB2
(YC13)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the Current PWB.
Code
Contents
Related parts
Check procedures/
corrective measures
Summary of Contents for TASKalfa 3051ci
Page 5: ...2L6 2N6 2N5 2N4 1 4 4 Machine Option2 Figure 1 4 4 Paper jam location Matchine Option2 ...
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Page 257: ...2L6 2N6 2N5 2N4 5 1 4 256 16 Grainy image See page1 4 272 ...