Phenomena
Cause
positions
Cause 1
Cause 2
Remedy
Banding
(Horizontal
streak)
Drive section
(OPC
drum/transfer
drum)
(Regular)
Drum drive section defect (irregular rotation, overload)
Drum drive motor defect
Drum drive section (gear damage, improper
engagement)
Drum drive section (belt defect, belt tension improper)
Drum drive motor replacement
OPC drum drive section gear replacement
Drive belt tension adjustment, drive belt replacement
Drive section greasing
Transfer drum
(Regular)
Transfer drum rotation failure (irregular rotation)
Brake
plate
defect
Waste toner transport section lock
Transfer unit lock defect
Brake plate replacement
Waste toner transport section cleaning
Transfer section lock section repair, parts replacement
OPC drum unit
(Regular)
210 mm pitch
OPC drum rotation failure
Main charger leak
OPC drum unit gear damage, improper engagement)
Waste toner transport section lock (overload) (Waste
toner transport section jam)
OPC drum unit replacement
Waste toner transport section (OPC drum unit)
cleaning
Optical unit
Scanning mirror dirt, damage, foreign material
Scanning mirror rotation failure (deflection)
Scanning mirror defect
Optical unit replacement
High voltage
PWB
Main charger output failure
Developing bias voltage failure
High voltage PWB defect
High
voltage
PWB
replacement
Developing unit
24 mm pitch
Developing roller rotation failure (irregular rotation)
Doctor
gap
improper
Developer defect (lump)
Developing shutter spring defect
Developing shutter defect
Developing unit replacement
Drive section
(Developing
section)
Developing roller rotation failure (irregular rotation)
Developing shutter ring failure
Developing shutter clutch solenoid position improper
Developing shutter clutch defect
Developing shutter drive gear defect
Developing roller clutch defect
Developing motor defect
Developing shutter clutch solenoid position adjustment
Developing shutter clutch replacement
Developing shutter drive gear replacement
Developing roller clutch replacement
Developing motor repair, replacement
PCU PWB
Load
control
defect
Toner concentration sensor input circuit defect
Drum drive motor control circuit defect
Developing motor control circuit defect
Cleaning clutch control circuit defect
Main charger control circuit defect
Developing bias control circuit defect
PCU PWB repair, replacement
Ghost
OPC drum unit
Cleaning
failure
Cleaning
blade
defect
OPC drum unit replacement
Fusing unit
Cleaning
failure
Oil supply failure
Cleaning roller defect
Oil blade defect
Oil felt defect
Fusing unit replacement
Discharge lamp
Discharge lamp light quantity insufficient
Discharge lamp does not turn on.
Discharge lamp dirt
Discharge lamp defect
Discharge lamp cleaning
Discharge lamp replacement
PCU PWB
Discharge lamp control circuit defect
PCU
PWB
defect
PCU PWB repair, replacement
11 – 26
SHARP SERVICE MANUAL JX8200SM [11] TROUBLESHOOTING
Содержание JX-8200
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