Read Sharp AR-M550 (serv.man5) Service Manual online
: Feb. 9 2004
2
AR-550/555/620/625/700/705 PWB LOCATION CHART /
基板（PWB）ロケーション
1 - 1
[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/CIS unit
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.
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.
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.
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.
33
Photoconductor temperature sensor PWB
Temperature detection around the photoconductor
1
22
2
26
27
3
4
5
6
8
28
7
9
10
30
30
11
12
20
25
24
14
15
23
13
16
17
31
32
19
33
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2
2
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