Sharp AR-M550U - Maintenance and Parts Replacement

: Feb. 6 2004
1
AR-M550/M620/M700 DETAILS OF EACH SECTION 6 - 3
C. Maintenance and parts replacement
(List of Replacement Parts)
(1) Maintenance and parts replacement
a. Operation panel unit
1) Remove the table glass.
2) Remove the operation section cover.
3) Remove each cable.
4) Remove the ground lead.
5) Remove the operation panel unit.
Code
Signal
name
Name Function/Operation Type Model Note
LCD LCD unit Display the each memu and the information.
TOUCH Touch panel Various adjustments and setting operation are
performed.
ORSLED Document size detection light
emitting PWB
Generates the document size detection signal.
ORSPD Document size detection light
receiving PWB
Generates the document size detection signal.
OCSW OCSW SPF open/close detector Document size detection trigger Transmission type Sensor
/CCFT /CCFT LCD backlight LCD backlight CCFT cool CRT
No. Name Function
1 LVDS/INV PWB Generates the LCD display signal and a high voltage for the backlight.
2 Operation control PWB Controls the display operation panel.
No. Unit Parts
a Operation panel unit 1 Operation control PWB
2 LVDS/INV PWB
b LCD unit 1 Touch panel
a-2
a-1ab-1
b
1
1
1