Fax Section - Sharp AR-M550N Service Manual

: Feb. 9 2004
1
No Name
17 Document size detection light
emitting PWB
1
19 High voltage PWB (MC/DV/TC)
20 Transfer bias high voltage PWB
(TD CL)
22 Dehumidifier heater relay PWB
23 Discharge lamp PWB
24 Scanner Flash PWB
25 Scanner control PWB
26 Scanner relay PWB
27 Operationcontrol PWB
28 Soft NIC PWB
29 Manual feed paper width
detection PWB
30 Driver PWB
31 Paper size detection PWB
(Paper feed tray 3, 4)
32 Detector PWB
(Paper feed tray 1, 2)
33 Photoconductor temperature
1
sensor PWB
H. FAX section
No Name
1 MDMC PWB
1
2 FAX IF PWB
3 TEL/LIU PWB
4 FAX AC power 100
5 FAX AC power 200
Generates lights to detect the document size.
Generates the main charger voltage, the developing bias voltage, the
transfer voltage and the transfer belt cleaning voltage.
Provides the bias voltage for the transfer cleaning roller and the print
mode.
Controls ON/OFF of the dehumidifier heater.
Generates light for discharging.
Stores the scanner control program.
Controls the scanner section.
Interfaces the scanner control PWB, the CCD PWB, the operation
control PWB and the LVDS/INV PWB.
Controls the display operation panel.
Controls the network.
Detects the manual paper feed tray paper width.
Drives the motors.
Detects the paper size.
Detects the paper empty and upper limit tray.
Temperature detection around the photoconductor
1
Controls the Modem and the TEL/LIU PWB.
• Interfaces the MDMC PWB and the main unit controller PWB.
• Installs the FAX image memory. (Expansion memory AR-MM9 can be
installed.)
• Controls the line. (Call-out, polarity reversion detection, CI detection,
line monitor, etc.)
• Connection of an externally connected telephone line.
Generates the FAX DC power of 100V.
Generates the FAX DC power of 200V.
AR-M550/M620/M700 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 17
Function/Operation
4,5
3
Function/Operation
MODEL NOTE
MODEL NOTE
Modem control FAX unit