Sharp AR-285 Service Manual page 165

Trouble code
Main Sub
code code
U9 00 Content Operation control communication trouble
(ICU detection)
Detail Communication setup error,
framing/parity/protocol error
Cause 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
Check Connect the connector of the slave unit
and PWB and the ICU PWB.
remedy Check the connection and the harness.
Check the grounding of the copier.
Check the ROM of the slave unit PWB.
90 Content Operation control communication trouble
(OPE detection)
Detail Communication setup
error/framing/parity/protocol error
Cause Slave unit PWB connector improper
connection
Slave unit PWB – ICU PWB harness
trouble
Slave unit PWB mother board connector
pin breakage
Check Check the slave unit PWB and the ICU
and PWB connector connection.
remedy Check the copier earth.
EE EL Content Auto developing adjustment trouble
(overtoner)
Detail A sample data is less than 0 when auto
developing adjustment is executed.
Cause Toner density sensor defective
Charging voltage or developing voltage
improper.
Toner density improper
Developing unit defective
PCU PWB defective
Check Make auto developing adjustment with
and SIM25-2.
remedy
EU Content Auto developing adjustment trouble
(undertoner)
Detail A sample data is less than 99 when auto
developing adjustment is executed.
Cause Toner density sensor defective
Charging voltage or developing voltage
improper
Toner density improper
Unit defective
PCU PWB defective
Check Make auto developing adjustment with
and SIM25-2.
remedy
Description
Trouble code
Main Sub
code code
FC 00 Content ASK/IrDA modulation LSI reset error
Detail
Cause
Check
and
remedy
01 Content ASK/IrDA switch error
Detail
Cause
Check
and
remedy
PF 00 Content RIC copy inhibition command reception
Detail
Cause
Check
and
remedy
–– Content Auditor not ready
9 – 10
AR-505
Description
Though the RESET signal pulse is sent
to the ASK/IrDA modulation LSI, the
power signal is not turned ON.
1) ICU main PWB defect
2) ASK/IrDA modulation LSI/Clock
oscillator defect
Perform the self diag with SIM 68-01.
Replace the ICU main PWB.
Though the ASK/IrDA switch command is
sent to the ASK/IrDA modulation LSI, the
AI signal is not changed.
1) ICU main PWB defect
2) ASK/IrDA modulation LSI/Clock
oscillator defect
Perform the self diag with SIM 68-01.
Replace the ICU main PWB.
Copy inhibition command received from
RIC (host)
Judged by the host.
Notice to the host
8/6/1999