Sharp AR-280 Service Manual page 173

Trouble code
Main Sub
code code
F2 32 Content Process control trouble (Drum marking
scanning trouble)
Detail Usually the sensor gain is adjusted so
that the output is a certain value, by
reading the drum base surface with the
drum marking sensor before starting
process control.
However, a certain output is not
obtained by adjusting the sensor gain.
Cause Drum marking sensor defective
Improper connection of harness between
PCU PWB and drum marking sensor
Drum marking sensor contaminated
OPC drum cleaning improper
Charging voltage improper
Check Check process control output with
and SIM44-02. (Do not adjust.)
remedy If the result is far different from the
specified value, it suggests the sensor is
defective. Check the sensor and harness.
If the deviation is relatively small, check
the sensor and drum surface for
contamination.
37 Content Drum marking sensor gain adjustment
error
Detail When the drum marking area surface is
scanned with the drum marking sensor
before starting process control and the
sensor gain is adjusted until a constant
output is provided, the output is not
constant though the sensor gain is
changed.
Cause Drum marking sensor trouble
Improper connection between PCU PWB
and drum marking sensor
Drum marking sensor is dirty
OPC drum cleaning trouble
Check Perform the gain adjustment of process
and control sensor with SIM 44-2.
remedy If ERROR is displayed, it may be a
breakdown. Check the sensor and the
harness.
When the adjustment is completed,
check the drum surface conditions.
39 Content Process thermistor breakdown
Detail The process thermistor is open.
Cause Process thermistor abnormality
Improper connection of the process
thermistor bar
PCU PWB abnormality
Check Check connection of the process
and thermistor harness and connector.
remedy Check the PCU PWB.
F3 12 Content Copier top stage CS lift up trouble
Detail UPED does not turn on within the
specified time.
ULUD does not turn on within the
specified time.
Cause UPED or ULUD defective
Upper cassette lift-up motor defective
Improper connection of harness between
PCU PWB, lift-up unit, and paper feed
unit.
Check Check UPED, ULUD and their harness
and and connector.
remedy Check lift-up unit.
Description
Trouble code
Main Sub
code code
F3 22 Content Copier bottom stage CS lift up trouble
Detail
Cause
Check
and
remedy
F9 00 Content Printer communication trouble (ICU
Detail
Cause
Check
and
remedy
01 Content PRT DRAM trouble
Detail
Cause
Check
and
remedy
02 Content PRT Centro port check error
Detail
Cause
Check
and
remedy
03 Content Network card trouble.
Detail
Cause
Check
and
remedy
04 Content Printer program error.
Detail
Cause
Check
and
remedy
9 – 5
Description
LPED does not turn on within the
specified time.
LLUD does not turn on within the
specified time.
LPED or LLUD defective
Lower cassette lift-up motor defective
Improper connection of harness between
PCU PWB, lift-up unit, and paper feed
unit.
Check LPED, LLUD, their harnesses and
connectors.
Check lift-up unit.
detection)
Communication setup error,
framing/parity/protocol error
Slave unit PWB connector improper
connection
Slave unit PWB – ICU PWB harness
trouble
Connector pin breakage of the motor
PWB of the slave unit PWB
Slave unit ROM trouble. no ROM, ROM
reverse insertion, ROM pin breakage
Connect the connector of the slave unit
PWB and the ICU PWB.
Check the connection and the harness.
Check the grounding of the copier.
Check the ROM of the slave unit PWB.
Option printer PWB DRAM trouble
(Check when turning on the power.)
DRAM module is broken and access
cannot be made.
DRAM module improper installation
Check with SIM 67-1.
Centro port trouble in option printer board
Centro port trouble
Printer PWB trouble
Replace Printer PWB
Network card self test trouble.
Network card defecft.
Printer PWB defect.
Network card connector connection
defect.
Check the Network card connector.
Replace the printer PWB.
Replace the Network card.
Program data trouble in the option
printer board.
Flash memory data is destroied.
Replace or rewrite the Flash memory.
Replace the printer PWB.
7/13/2000