C. Motors
No.
Part name
Type
Function, operation
1
Fusing unit drive motor
Stepping motor
Drives the fusing unit and the transfer drum cleaner.
2
Toner motor (Black)
Stepping motor
Drives the black toner supply section.
3
Developing unit drive motor
Stepping motor
Drives the developing section.
4
Toner motor (Color)
Stepping motor
Drives the color toner supply section.
5
Fan motor
DC brushless motor
Cools the fusing section and discharges ozone.
6
OPC drum/Transfer drum drive motor Stepping motor
Drives the OPC drum and the transfer drum.
7
Paper feed unit drive motor
Stepping motor
Drives the paper feed section such as the paper pickup roller, the paper
transport roller, the resist roller, and the lift cam.
8
Cooling fan motor
DC brush motor
Cools the power section.
9
Scanning motor
DC brushess motor
Drive the scanning mirror.
D. PWB’s
No.
Part name
Function, operation
1
Flash memory PWB (x2)
(PS PWB) (Option)
2
Mother PWB
(Japan only)
3
AppleTalk I/F PWB (Option)
4
ICU PWB
Translates print data and command data sent from the host, forms image data, and sends dot image
data and print command to the PCU PWB.
Also sends the status data of the printer to the host.
5
SIMM memory PWB (x2) (Option)
6
Discharge lamp PWB
Radiates lights onto the OPC drum to discharge residual charges on it.
7
Power PWB
Supplies the DC power and controls the fusing heater.
8
PCU PWB
Controls the printer engine.
9
High voltage PWB
Supplies the high voltage to the developing bias, the main charger, and the transfer charger.
10
OPC drum cartridge fuse PWB
Includes a fuse inside. Used to detect whether the installed OPC drum cartridge is a virgin one or not.
When a virgin OPC drum cartridge is installed, the fuse is blown to reset the OPC drum counter.
Detects installation of the OPC drum unit.
11
Relay PWB
Interfaces signals of the PCU PWB, the operation PWB, the sensors the detectors, and the loads.
12
Image density sensor PWB
Detects the toner patch image density in the print quality (process) correction. Also detects paper jams.
13
Operation PWB
Controls the keys and displays.
14
Paper size sensor PWB
Detects the paper size and installation of the paper cassette.
15
High voltage PWB (for discharger) Supplies the high voltage to the discharger.
7
6
4
3
5
2
1
8
9
4
1
2
13
11
12
5
7
8
9
6
3
15
14
14
10
SHARP SERVICE MANUAL JX8200SM [6] EXTERNAL VIEW AND INTERNAL STRUCTURE
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