Olivetti PF-720 Service Manual page 35

3LM-1
Code
C1900 Paper feeder EEPROM error
When writing the data, the write data and
the read data is not continuously in
agreement three times.
C2600 PF paper conveying motor error
The lock signal of the motor is detected
above 450 ms.
1-4-6
Contents
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector YC27 on
connector termi- the engine PWB and the connector on the
nals. PF main PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation.
Defective paper Replace the paper feeder with another unit
feeder. and check the operation. If the operation is
normal, replace or repair optional paper
feeder.
Poor contact in the Check the connection of connector on the
connector termi- engine PWB and the connector on the PF
nals. main PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.
Defective drive Check if the rollers and gears rotate
transmission sys- smoothly. If not, grease the bushings and
tem. gears. Check for broken gears and replace if
any.
Defective PWB. Replace the PF main PWB or engine PWB
and check for correct operation.
Defective paper PF Replace the PF paper conveying motor.
conveying motor.
Service Manual
Remarks
Y112020-4