Sharp AR 555S, Circuit Diagram, Page: 3 / 198

AR-555/550/620/625 PWB LOCATION CHART /
基板（ PWB ）ロケーション
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[1] PWB LOCATION CHART /
基板（ PWB ）ロケーション
No Name Function/Operation
1 AC power PWB Controls the AC power.
2 CCD PWB Scans document images.
3 CIS control PWB Scans document images (back surface) and controls the CIS unit.
4 DC main power PWB Generates the DC power.
5 DC sub power PWB Generates the DC power in the power save mode.
6 LVDS/INV PWB Generates the LCD display signal, and generates a high voltage for backlight.
7 MFP FLASH ROM PWB Stores the MFP control program.
8 MFP controller PWB Controls the image-related items and controls all over the machine.
9 Mother PWB Interfaces the MFP control PWB and the PCU PWB.
10 PCU FLASH ROM PWB Stores the PCU control program.
11 PCU PWB Controls the engine section.
12 SPF PWB Drives the SPF section loads./ Interfaces the sensor and detector signals.
13 SPF paper width detection PWB Detects the SPF paper tray paper width.
14 Image density sensor PWB Detects the toner patch density in the image density correction.
15 OPC drum mark sensnor PWB Detects the OPC drum mark.
16 Document size detection light reception PWB Generates the document size detection signal.
17 Document size detection light emitting PWB Generates lights to detect the document size.
18 Fusing roller bias high voltage PWB Provides the fusing roller bias voltage.
19 High voltage PWB (MC/DV/TC) Generates the main charger voltage, the developing bias voltage, the transfer voltage and
the transfer belt cleaning voltage.
20 Transfer bias high voltage PWB (TD CL) Provides the bias voltage for the transfer cleaning roller and the print mode.
22 Dehumidifier heater relay PWB Controls ON/OFF of the dehumidifier heater.
23 Discharge lamp PWB Generates light for discharging.
24 Scanner Flash PWB Stores the scanner control program.
25 Scanner control PWB Controls the scanner section.
26 Scanner relay PWB Interfaces the scanner control PWB, the CCD PWB, the operation control PWB and the
LVDS/INV PWB.
27 Operationcontrol PWB Controls the display operation panel.
28 Soft NIC PWB Controls the network.
29 Manual feed paper width detection PWB Detects the manual paper feed tray paper width.
30 Driver PWB Drives the motors.
31 Paper size detection PWB (Paper feed tray 3, 4) Detects the paper size.
32 Detector PWB (Paper feed tray 1, 2) Detects the paper empty and upper limit tray.
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30
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