Olivetti d-Copia 600, Руководство по обслуживанию

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1-5-49
(2) No image appears
(entirely black).
Causes
1. No main charging.
2. Exposure lamp fails to light.
3. CIS fails to light.
4. The laser of laser scanner unit has lit up all.
Causes Check procedures/corrective measures
1. No main charging.
A. Poor insertion main charger unit.
Reinstall the main charger unit.
B. Broken main charger wire.
Replace the wire (see page 1-6-33).
C. Leaking main charger housing.
Clean the main charger wire and grid.
D. The connector terminals of the high volt-
age PWB make poor contact.
Reinsert the connector. Also check for continuity within the connector
cable. If none, remedy or replace the cable.
E. Defective engine PWB.
Check if YC7-9 on the engine PWB goes low when maintenance item
U100 is run. If not, replace the engine PWB.
F. Defective high voltage PWB.
Check if main charging takes place when YC1-3 on the high voltage PWB
goes low while maintenance item U100 is run. If not, replace the high
voltage PWB.
2. Exposure lamp fails to light.
A. The connector terminals of the exposure
lamp make poor contact.
Reinsert the connector. Also check for continuity within the connector
cable. If none, remedy or replace the cable.
B. Defective inverter PWB.
Check if the exposure lamp lights when CN2-1 and CN2-4 on the inverter
PWB go low while maintenance item U061 is run. If not, replace the
inverter PWB.
C. Defective scanner PWB.
Check if YC4-3 on the scanner PWB goes low when maintenance item
U061 is run. If not, replace the scanner PWB.
3. CIS fails to light.
A. The connector terminals of the CIS make
poor contact.
Reinsert the connector. Also check for continuity within the connector
cable. If none, remedy or replace the cable.
B. Defective DP inverter PWB.
Check if the CIS lights when the connectors on the DP inverter PWB go
low while maintenance item U061 is run. If not, replace the DP inverter
PWB.
C. Defective DP main PWB.
Check if YC12-2 on the DP main PWB goes low when maintenance item
U061 is run. If not, replace the DP main PWB.
4. The laser of laser scanner unit has lit up
all.
A. Defective laser scanner unit.
Replace the laser scanner unit (see page 1-6-42).
B. Defective main PWB.
Replace the main PWB.
Y104350-7 Sevice Manual