Kyocera TASKalfa 2551ci, Service Manual

Page: 323 / 756

2NP
1-4-16
0630 DMA error
DMA transmission of image
data does not complete within
the specified period of time.
Poor contact in the
connector termi-
nals.
1. Reconnect the CIS signal line.
2. Confirm that the CIS connector
terminals are firmly connected. Insert
the connector all the way in.
3. If the wiring is disconnected, shorted or
grounded, replace the wiring.
Defective PWB.
1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
Wiring that connects the CIS and the DP
controller PWB.
Wiring that connects the DP main PWB
and the main PWB.
3. Replace the DP main PWB.
4. Replace the main PWB (see page 1-5-
37).
0640 Hard disk error
The hard disk cannot be
accessed.
Defective connec-
tor cable or poor
contact in the con-
nector.
1. If an abnormal noise is heard from the
HDD, replace the HDD.
2. Check the SATA wiring between the
HDD and the main circuit PWB for loose
connection, disconnection and
damages, and that it is connected into
the correct terminal.
Main PWB: YC1,YC27
YC2,YC32 (45/55 ppm model)
3. Replace the SATA cable.
Defective hard
disk. 1. Execute U024 to initialize (FULL) the
HDD (see page 1-3-33).
2. If an error is detected after executing
U024, replace the HDD.
Defective PWB. Replace the main PWB and check for cor-
rect operation (see page 1-5-37).
Code Contents Causes
Check procedures/
corrective measures