Olivetti d-Copia 2500MF, Service Manual

Page: 170 / 296

2H0/2HZ
1-4-40
(6)
The feedshift sole-
noid does not oper-
ate. 1. Broken solenoid coil. Check for continuity across the coil. If none, replace the solenoid.
2. Poor contact in the con-
nector terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
3. Defective engine PWB. Run maintenance item U033 and check if the solenoid operates. If
not, replace the engine PWB.
(7)
The exposure lamp
does not turn on or
off. 1. Poor contact in the con-
nector terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
2. Defective engine PWB. Run maintenance item U061 and check if YC16-1 and YC16-6 on
the engine PWB goes low. If not, replace the engine PWB.
If YC16-1 and YC16-6 on the engine PWB is always low, replace
the engine PWB.
3. Defective scanner
inverter PWB.
Run maintenance item U061 and check if the exposure lamp turns
on with YC1-1 and YC1-6 on the scanner inverter PWB go low. If
not, replace the scanner inverter PWB.
If the exposure lamp does not turn off with YC1-1 and YC1-6 on
the scanner inverter PWB high, replace the scanner inverter
PWB.
4. Defective exposure lamp. Replace the exposure lamp even if checking or correcting other
measures.
(8)
Main charging is not
performed. 1. Broken main charger
wire.
(See page 1-4-33.)
2. Leaking main charger
housing.
3. The connector terminals
of the high voltage PWB
make poor contact.
4. Defective engine PWB.
5. Defective high voltage
PWB.
(9)
No developing bias is
output. 1. The connector terminals
of the high voltage PWB
make poor contact.
(See page 1-4-33.)
2. Defective engine PWB.
3. Defective high voltage
PWB.
(10)
Transfer charging is
not performed. 1. The connector terminals
of the high voltage PWB
make poor contact.
(See page 1-4-33.)
2. Defective engine PWB.
3. Defective high voltage
PWB.
Problem Causes Check procedures/corrective measures
Service Manual Y108620-5