Sharp MX-4100N Service Manual page 424

Signal
OCSW Original cover SW
PWRSW Operaton panel power supply switch
No.
1 MFP OPE-P PWB
2 LVDS PWB
3 Document detection light receiving PWB
4 Document detection light emitting PWB
5 LCD INV PWB
6 USB connector PWB
2. Operational descriptions
A. Outline
The operation panel is composed of the MFP OPE PWB, the LCD
INV PWB, the LVDS PWB, the USB CN PWB, the LCD unit, and
the operation key, and is used to operation the machine, to set and
to display the status.
They are connected with the document detection light receiving
PWB for detection of the document size. They receive light from the
document detection light emitting PWB attached to the rear frame
side, detecting the document size.
The power switch of the operation panel outputs the ON/OFF con-
trol signal of the DC power.
The USB connecter can be connected with the USB memory, the
USB keyboard, the IC card writer, the IC card reader, and the USB
hub, sending the electronic data to the mother PWB.
The MX-4100N and the MX-4101N are provided with the keyboard
(standard for North America, option for other than North America)
under the operation panel unit, allowing text input.
Name
Document size detection timing switch
Outputs the ON/OF control signal of the DC power source.
Name
Detects the pressed key on the operation panel.
Converts the display signal and outputs to the LCD.
Receives light from the document detection light emitting PWB to detect the document size.
Emits light for detection of the document size.
Emits the document size detection LED lights.
For USB connecting
MX-5001N OPERATION PANEL B – 2
Function/Operation
Function/Operation
3. Disassembly and assembly
A. 8.5 inch operation panel unit
e
g
f
a
a LCD INV PWB
b POWER SW PWB
c MFP OPE-P PWB
d USB connector PWB
e LVDS PWB
f LCD module
g Touch panel
1) Remove the operation panel base plate.
2) Remove the screw, and disconnect four connectors.
*1
*1
*4
*1: Since the lead wire is provided with the lock, do not pull the
lead wire.
Hold the connector and pull it out.
*2: Note that the lock is on the back surface.
*3: When disconnecting the connector, pull the lead wire
slowly.
*4: Disconnect the connector from the Mylar.
Parts
*3
*1 *2
c
b
d