Read Sharp AR-C170 (serv.man24) Service Manual online
AR-C170M DESCRIPTIONS OF EACH SECTION 7 - 49
7. Operation panel
A. Operational descriptions
(1) Outline
The operation panel unit is composed of the operation key PWB,
the inverter/LVDS PWB, the LCD unit, and the operation keys, and
is used to operate the machine and to set and display the machine
status.
the inverter/LVDS PWB, the LCD unit, and the operation keys, and
is used to operate the machine and to set and display the machine
status.
The operation key PWB is connected to the ORS light receiving
PWB for detecting the document size. It receives light from the
ORS light emitting PWB attached to the rear frame, detecting the
document size.
PWB for detecting the document size. It receives light from the
ORS light emitting PWB attached to the rear frame, detecting the
document size.
(2) Electrical section and mechanical section
(3) major parts functions and operations
RW: Abbreviation of Related Wiring, which means the said load is specified in the related figure of the mechanical and the electrical sec-
tions.
CN4 (20pin)
CN1 (30pin)
CN3 (2pin)
CN2 (5pin)
Inverter/LVDS PWB
1
2
5
6
3
4
7
8
9
12
13
10
11
14
15
16
19
20
17
18
Vss (GND2)
NC
NC
Vss (GND2)
NC
NC
LCD_D3
LCD_D2
LCD_D1
LCD-VEE
3.3V
LCD_D0
Vss (GND2)
LCD-DIS
Vss (GND2)
LCD-CP2
LCD_M
LCD_S
FLS
Vss (GND2)
LCD_CP1
1
2
5
6
3
4
7
8
9
12
13
10
11
14
15
16
19
20
17
18
LCDS+
LCDS-
LCDCP1+
LCDCP1-
LCDM+
LCDM-
GND2
LCDCP2+
LCDCP2-
LCD-VCC
LCD-VEE
GND2
LCDDIS
LCDD0+
LCDD0-
LCDD1+
LCDD2-
LCDD3+
LCDD1-
LCDD2+
22
23
21
24
25
26
29
30
27
28
GND2
TH
LCDD3-
GND2
+24V
/CCFT
/YL
XH
FMZ
YH
/XL
1
2
3
4
/YL
FM
XH
YH
/XL
2
1
BH
HV
/CCFT
CN2 (6pin)
CN1 (26pin)
Operation key PWB
1
2
5
6
3
4
PDSEL0
PDSEL1
PD
GND2
PDSEL2
+5V
PH
1
2
5
6
3
4
7
8
9
12
13
10
11
14
15
16
19
20
17
18
GND2
SCAN0
SCAN3
SCAN4
SCAN1
SCAN2
SENSE0
SENSE1
SENSE2
SEG0\
SEG1\
SENSE3
SENSE4
SEG2\
SEG3\
COM0
FRDY
/BZR
COM1
COM2
22
23
21
24
25
26
PDSEL1
PDSEL2
PDSEL0
+5V
PD
GND2
FAZ
CN6 (6pin)
CN5 (26pin)
2
1
GND2
3
OCSW
4
+24V
5
/LED0
6
/LED1
+5V
CN3 (30pin)
MFP PWB
LCD unit
LCD
OCSW
ORS light
emitting PWB
emitting PWB
ORS light
receiving PWB
receiving PWB
Operation panel unit
Touch panel
Backlight
Document size
detection
detection
No.
Name
Code, signal name
Function
RW
Operation key PWB
—
Detects a pressed key on the operation panel.
RW
Inverter/LVDS PWB
—
Drives the LCD and the backlight, and controls the touch panel.
RW
ORS light receiving PWB
—
Receives light from the ORS light emitting PWB to detect the document size.
RW
ORS light emitting PWB
—
Emits light for detecting the document size.
RW
OC switch
OCSW
Timing switch for detecting the document size
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