Oce 3121, Technical & Service Manual

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34 TSM Océ 3121/3122 Error code solving / machine fault solving
35 SCSI interface E601 (The communication between the SCSI
board and the machine has a fault.)
36 SCSI interface E603 (The SCSI fuse has an open circuit.)
DC control
PBA 4 Connect a meter to J104-2 + and to
J104-3 - on the DC control PBA.
The correct reading is 5V, when the
machine is switched ON. No Check the wiring and the
mains supply. If it is nor-
mal, replace the DC con-
trol PBA.
Sensor for
the tray posi-
tion PS16 5 Connect a meter to J104-8 + and to
J104-3 - on the DC control PBA.
The correct reading is 24V: imme-
diately after switching the machine
ON. No Replace the sensor for the
tray position
Cause Step Checks Yes/No Action
1 Turn off and then on the main
power. YES End.
PBA 2 Is the SCSI board firmly con-
nected to the system mother-
board? NO Correct the connection.
SCSI board Replace the SCSI board. Is the
problem corrected? YES End
System moth-
erboard Replace the system
motherboard image proc-
essor PBA.
Cause Step Checks Yes/No Action
1 Turn off and then on the main
power. Is the problem cor-
rected? YES End.
Fuse 2 Is there electrical continuity in
the fuse on the SCSI board? NO Replace the fuse.
Is there conti-
nuity in the
fuse on the
SCSI board? YES Replace the SCSI board.
Cause Step Checks Y/N Action