Mita PointSource Ai 3010, Service Manual

Page: 349 / 478

2AR
3-5-3
Defective
main PCB.
Problem with
the backup
memory data.
Defective
backup RAM.
Poor contact
of the connec-
tor terminals.
Defective
main PCB or
operation unit
main PCB.
Defective
engine ROM
IC.
Defective
main PCB.
Poor contact
of the connec-
tor terminals.
Defective
main PCB or
scanner
control PCB.
Replace the main PCB and
check for correct operation.
Turn safety switch 1 off and
back on and run maintenance
item U020 to set the contents
of the backup memory data
again.
If the C011 is displayed after
re-setting the backup memory
contents, replace the backup
RAM IC27.
Check the connection of con-
nectors CN9 on the main PCB
and CN8 on the operation unit
main PCB, and the continuity
across the connector terminals.
Remedy or replace if neces-
sary.
Replace the main PCB or
operation unit main PCB and
check for correct operation.
Replace the engine ROM
IC37 on the main PCB and
check for correct operation.
Replace the main PCB and
check for correct operation.
Check the connection of con-
nectors CN5 on the main PCB
and CN9 on the scanner con-
trol PCB, and the continuity
across the connector terminals.
Remedy or replace if neces-
sary.
Replace the main PCB or
scanner control PCB and
check for correct operation.
C010 RAM/ROM problem
Read and write data does
not match.
C011 Backup memory data
problem
Data in the specified area
of the backup memory
does not match the speci-
fied values.
C021 Operation unit main PCB
communication problem
There is no reply after 20
retries at communication.
C022 Communication problem
between the engine PCB
and main PCB
There is no reply after 20
retries at communication.
C023 Scanner control PCB
communication problem
There is no reply after 5
retries at communication.
Self diagnostic codes
Code Contents
Remarks
Causes
Check procedures/
corrective measures
3-5-2