Read Sharp AR-M550 (serv.man10) Service Manual online
AR-M550/M620 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 17
H. FAX section
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.
transfer voltage and the transfer belt cleaning voltage.
20
Transfer bias high voltage PWB
(TD CL)
(TD CL)
Provides the bias voltage for the transfer cleaning roller and the print
mode.
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.
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
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)
(Paper feed tray 3, 4)
Detects the paper size.
32
Detector PWB
(Paper feed tray 1, 2)
(Paper feed tray 1, 2)
Detects the paper empty and upper limit tray.
No
Name
Function/Operation
MODEL
NOTE
1
MDMC PWB
Controls the Modem and the TEL/LIU PWB.
FAX unit
2
FAX IF PWB
• Interfaces the MDMC PWB and the main unit controller PWB.
• Installs the FAX image memory. (Expansion memory AR-MM9 can
• Installs the FAX image memory. (Expansion memory AR-MM9 can
be installed.)
3
TEL/LIU PWB
• Controls the line. (Call-out, polarity reversion detection, CI
detection, line monitor, etc.)
• Connection of an externally connected telephone line.
4
FAX AC power 100
Generates the FAX DC power of 100V.
5
FAX AC power 200
Generates the FAX DC power of 200V.
No
Name
Function/Operation
MODEL
NOTE
3
4,5
1
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