Olivetti d-Copia 300, Руководство по обслуживанию

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2FD/2FF/2FG
1-5-23
Code Contents
Remarks
Causes Check procedures/corrective measures
C0450
C0470
C0610
C0630
Mailbox* communication problem
• Communication errors from the com-
munication microcomputer on the
main PCB.
No communication: there is no reply
after 5 retries.
Abnormal communication: a commu-
nication error (parity or checksum er-
ror) is detected five times in succes-
sion.
Switchback unit* communication
problem
• Communication errors from the com-
munication microcomputer on the
main PCB.
No communication: there is no reply
after 5 retries.
Abnormal communication: a commu-
nication error (parity or checksum er-
ror) is detected five times in succes-
sion.
Bitmap problem
• There is a problem with the data or
address bus of the bitmap DRAM.
• The DIMM on the memory PCB does
not operate correctly.
DMA problem
• DMA transmission of compressed,
decompressed, rotated, relocated or
blanked-out image data does not
complete within the specified period
of time.
Poor contact in
the connector ter-
minals.
Defective main
PCB.
Defective mailbox
main PCB.
Poor contact in
the connector ter-
minals.
Defective main
PCB.
Defective switch-
back unit main
PCB.
Defective main
PCB.
DIMM installed
incorrectly.
Defective DIMM.
Defective main
PCB.
Check the connection of connectors YC3
on the main PCB and CN1 on the mailbox
main PCB, and the continuity across the
connector terminals. Repair or replace if
necessary.
Replace the main PCB and check for cor-
rect operation.
Replace the mailbox main PCB and check
for correct operation.
Check the connection of connectors YC3
on the main PCB and the continuity across
the connector terminals. Repair or replace
if necessary.
Replace the main PCB and check for cor-
rect operation.
Replace the switchback unit main PCB and
check for correct operation.
Replace the main PCB and check for cor-
rect operation.
Check if the DIMM is inserted into the
socket on the main PCB correctly.
Replace the DIMM and check for correct
operation.
Replace the main PCB and check for cor-
rect operation.
*: Optional