Kyocera KM-3050 Service Manual page 167

Code
C1120 Paper feeder left lift position problem
(optional 3000-sheet paper feeder)
Paper feeder switch 2 does not turn on
within 30 s of paper feeder lift motor 1
turning on.
C1130 Paper feeder right lift position prob-
lem (optional 3000-sheet paper
feeder)
Paper feeder switch 1 does not turn on
within 30 s of paper feeder lift motor 2
turning on.
C1800 Paper feeder unit communication
problem (optional paper feeder/3000-
sheet paper feeder)
No communication: there is no reply
after 5 retries.
Abnormal communication: a communica-
tion error (parity or checksum error) is
detected five times in succession.
C1900 Paper feeder EEPROM error (optional
paper feeder)
When writing the data, the write data and
the read data is not continuously in
agreement three times.
Contents
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector on the
connector termi- engine PWB and the connector on the paper
nals. feeder main PWB, and the continuity across
the connector terminals. Repair or replace if
necessary.
Defective paper Check if YC5-7 on the paper feeder main
feeder lift switch 2. PWB goes low when paper feeder lift switch
2 is turned off. If not, replace paper feeder lift
switch 2.
Defective paper Check for continuity across the coil. If none,
feeder lift motor 1. replace paper feeder lift motor 1.
The paper feeder Check the gears and belts, and remedy if
left lift does not rise necessary.
properly.
Poor contact in the Check the connection of connector on the
connector termi- engine PWB and the connector on the paper
nals. feeder main PWB, and the continuity across
the connector terminals. Repair or replace if
necessary.
Defective paper Check if YC5-4 on the paper feeder main
feeder lift switch 1. PWB goes low when paper feeder lift switch
1 is turned off. If not, replace paper feeder lift
switch 1.
Defective paper Check for continuity across the coil. If none,
feeder lift motor 2. replace paper feeder lift motor 2.
The paper feeder Check the gears and belts, and remedy if
right lift does not necessary.
rise properly.
Poor contact in the Check the connection of connector on the
connector termi- engine PWB and the connector on the paper
nals. feeder 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 main PWB and
feeder main PWB. check for correct operation.
Poor contact in the Check the connection of connector on the
connector termi- engine PWB and the connector on the paper
nals. feeder 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.
2GN/2GP/2GR
Remarks
1-4-27