Sharp MX-M350N / MX-M350U / MX-M450N / MX-M450U (serv.man12) Service Manual ▷ View online
MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 61
a-16. SPF motor
1) Remove the OC cover.
2) Remove the SPF lower cover.
3) Remove the original paper feed unit.
4) Remove the SPF drive unit.
5) Remove the SPF motor.
a-17. Resist roller
a-18. Resist roller clutch
1) Remove the SPF resist roller unit.
2) Remove the SPF resist roller and the SPF resist roller clutch.
1)
2)
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1)
1)
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2)
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MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 62
a-19. SPF original paper feed solenoid
a-20. SPF original paper feed clutch
1) Remove the SPF paper feed unit.
2) Remove the SPF paper guide.
3) Remove the SPF pickup unit.
4) Remove the original paper feed solenoid and the SPF original
paper feed clutch.
a-21. Separation mylar lower
a-22. Separation pad
1) Remove the upper transport unit.
2) Loosen the screw, and remove the separation pad unit.
3) Remove the screw, and remove the separation plate and the
front separation plate.
4) Remove the separation Mylar lower, and the separation pad.
8. Operation panel section
A. General
This section describes various types of settings, display and oper-
ation.
ation.
The LCD display section is controlled by the MFP CONTROL
PWB.
PWB.
The touch panel, operation keys and LED display are controlled by
the SCANNER CONTROL PWB.
the SCANNER CONTROL PWB.
1)
1)
2)
1)
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2)
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MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 63
B. Major parts and signal functions
1
3
ORSPD
ORSLED
2
OCSW
21
LcdD1-
12
YH
1
18
30
LcdD0+
18
LcdD3+
1
15
LcdDIS
/YL
52271-3079
15
LcdM-
3
12
LcdCP2+
+24V3
LcdS-
+24V3
9
LcdCP1+
GND2
LcdCP1-
LcdCP2-
13
TH
29
6
23
25
LcdS-
LcdD2-
23
LCD-VEE
2
/YL
26
3
20
28
LcdD1+
20
LcdD2+
4
17
LCD-VEE
YH
17
LcdD3-
6
14
GND2
XH
14
LcdD0+
8
11
GND2
GND2
LcdD0-
LcdD1+
GND2
8
LcdM-
LcdD3-
30FMN-BT
LcdDIS
5
CN5
CN1
/CCFT
28
5
22
26
LcdS+
LcdD2+
22
GND2
7
/XL
25
2
19
29
LcdD0-
19
LcdD2-
9
16
/XL
16
LcdM+
11
13
LcdCP2-
/CCFT
LcdS+
GND2
10
LcdCP1-
TH
LcdCP1+
LcdCP2+
GND2
30
7
24
LcdM+
LcdD3+
24
3.3V
10
XH
27
4
21
27
LcdD1-
SCN
JNT
PWB
T24FAZ-SMT-TF
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CN4
B6B-PH-SM4-TB(LF)(SN)
PDSEL1
+5V2
GND2
PD
PDSEL0
PDSEL2
5
3
6
4
CN2
2
1
MFP
OPE
PWB
OPE
PWB
4
PDSEL1
1
+5V2
PDSEL0
PDSEL2
5
S6B-PH-K-S
6
3
PD
GND2
GND2
2
17
9
23
3
11
4
13
5
10
15
1
2
21
20
16
22
19
24
18
14
12
8
6
7
CN1
52610-2471
/F0
SEG2
SEG1
SEG0
/KEYIN
+5V1
GND2
GND2
PD
/F1
+5V2
/F2
/F3
/F3
GND2
PDSEL2
GND2
PDSEL1
PDSEL0
/BZR
(NC)
(NC)
GND2
GND2
GND2
+5V2
GND2
GND2
/F1
PDSEL2
+5V2
(NC)
SEG1
SEG0
PD
PDSEL1
PDSEL0
/BZR
GND2
/F3
/F0
GND2
/F2
+5V2
/KEYIN
(NC)
GND2
SEG2
GND2
+5V1
3.3V
52271-0469
YH
4
2
1
XH
CN4
3
/YL
YH
FFC-4PIN
/XL
XH
/XL
/YL
SCN
cnt
PWB
cnt
PWB
1
/LED1
3
1
+24V3
GND2
4
S6B-PH-K-S
B3B-EH
3
/LED0
2
+5V1
5
6
+5V1
2
GND2
OCSW
OCSW
CN6
OCSW
+24V
11
8
6
10
CN2
9
2
13
D3
5
LP
CP
+3.3V
CP
+3.3V
YD
D2
DISP
4
7
GND
52271-1379
1
VEE
LVDS
PWB
PWB
M
D1
D0
3
12
INV
PWB
PWB
4
3
2
1
/CCFT
+24V
S3B-PH-K-S(LF)
GND
3
2
1
CCFT+
NC
53259-0417
/CCFT
NC
4
3
2
1
S3B-PH-SM4-TB(LF)
+24V
2
1
GND
CN3
3
/CCFT
FFC-30Pin
FFC-24Pin
FG
SRA-21T-3
3
12
5
11
13
19
20
6
7
8
14
15
1
9
2
17
10
16
4
18
21
22
23
24
GND2
CN1
27
26
28
34
35
29
30
32
25
31
33
36
37
38
39
42
41
43
49
50
44
45
47
40
46
48
51
52
53
54
57
56
58
59
60
55
3
12
5
11
13
19
20
6
7
8
14
15
1
9
2
17
10
16
4
18
21
22
23
24
27
26
28
34
35
29
30
32
25
31
33
36
37
38
39
42
41
43
49
50
44
45
47
40
46
48
51
52
53
54
57
56
58
64
65
59
60
62
55
61
63
66
67
68
69
75
71
70
76
72
73
78
77
74
80
79
TX25-100P-LT-H1
CN3
77
78
73
72
76
70
71
75
79
80
74
65
64
69
68
67
66
63
61
62
92
84
97
98
99
94
89
88
87
90
91
95
86
83
81
82
85
96
93
100
99
98
97
96
91
94
88
92
93
89
85
84
82
90
81
86
83
95
87
+24V3
/XL
+12V1
GND2
GND2
GND2
RES_CCD1
PDSEL1
SEG0
TXD_CCD1
CLK_CCD1
FRM_CCD1
GND2
/BZR
XH
/F2
/F0
+3.3V
PD
GND2
/CL1
RXD_CCD1
ADD_CCD1
ADD_CCD1
PAGE1
PDSEL0
/STSET
YH
SEG1
Lcd DIS
/CCFT
/YL
/YL
TH
/1_DBL-
/1_DBL+
/1_DBL+
1_DATA0-
1_DATA0+
1_DATA1-
1_DATA1+
1_DATA0+
1_DATA1-
1_DATA1+
1_CLK-
1_CLK+
1_CLK+
GND2
GND2
GND2
GND2
GND2
(NC)
GND2
(NC)
+24V3
PDSEL2
/KEYIN
/KEYIN
GND2
GND2
GND2
LcdS-
LcdS+
LcdM+
LcdM-
LcdCP1+
LcdM-
LcdCP1+
LcdCP2+
LcdCP1-
LcdCP2-
LcdD2-
LcdD1+
LcdD3-
LcdD3+
LcdD1-
LcdD0-
LcdD0+
LcdD2+
GND2
GND2
GND2
/STMPS
GND2
GND2
GND2
GND2
+12V1
+12V1
GND2
+5V2
GND2
GND2
GND2
GND2
+12V1
+12V1
GND2
+5V2
+5V2
GND2
GND2
GND2
GND2
GND2
GND2
+5V2
+5V2
SEG2
GND2
GND2
GND2
GND2
GND2
/F3
/F1
+5V1
+3.3V
GND2
GND2
LCD-VEE
+24V3
+24V3
+24V3
GND2
GND2
GND2
+24V3
+12V1
GND2
GND2
GND2
PDSEL1
SEG0
GND2
/1_DBL-
/1_DBL+
/1_DBL-
/1_DBL+
1_DATA0-
1_DATA0+
1_DATA1-
1_DATA1+
1_DATA0+
1_DATA1-
1_DATA1+
1_CLK-
1_CLK+
1_CLK+
GND2
GND2
GND2
GND2
GND2
(NC)
GND2
(NC)
+24V3
PDSEL2
/KEYIN
/KEYIN
GND2
GND2
GND2
LcdS-
LcdS+
LcdM+
LcdM-
LcdM-
GND2
/XL
+3.3V
/STSET
YH
LcdCP1+
LcdCP2+
LcdCP1-
LcdCP2-
LcdD2-
LcdD1+
LcdD3-
LcdD3+
LcdD1-
LcdD0-
LcdD0+
LcdD2+
GND2
GND2
GND2
/STMPS
GND2
GND2
GND2
GND2
+12V1
+12V1
GND2
+5V2
GND2
GND2
GND2
GND2
+12V1
+12V1
GND2
+5V2
+5V2
GND2
GND2
+5V2
RES_CCD1
FRM_CCD1
CLK_CCD1
TXD_CCD1
CLK_CCD1
TXD_CCD1
/F0
/F2
/BZR
GND2
PD
ADD_CCD1
RXD_CCD1
/CL1
PDSEL0
PDSEL0
PAGE1
SEG1
GND2
GND2
+5V2
GND2
GND2
GND2
SEG2
GND2
GND2
GND2
/F1
/F3
+5V1
XH
Lcd DIS
/CCFT
/YL
/YL
TH
+3.3V
GND2
GND2
LCD-VEE
+24V3
+24V3
GND2
GND2
+24V3
GND2
GND2
100
TX24-100R-LT-H1
TOUCH
LCD
CCFL
MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 64
C. Maintenance and parts replacement
a. Original detection unit
a-1. Original size detection PWB (Light emitting side)
1) Remove the rear cabinet.
2) Remove the original detection unit (Light emitting side).
3) Remove the document size detection PWB (Light emitting
side)
a-2. Original size detection PWB (Light receiving side)
1) Remove the operation panel lower cabinet.
2) Remove the original size detection PWB (Light receiving side)
b. Operation panel unit
1) Remove the original exit tray.
Code
Signal
name
Name
Function/Operation
Type
Note
LCD
LCD unit
Display the each memu and the information.
TOUCH
Touch panel
Various adjustments and setting operation are
performed.
performed.
ORSLED
Document size detection light
emitting PWB
emitting PWB
Generates the document size detection signal.
ORSPD
Document size detection light
receiving PWB
receiving PWB
Generates the document size detection signal.
OCSW
OCSW
SPF open/close detector
Document size detection trigger
Transmission type Sensor
CCFL
CCFL
LCD backlight
LCD backlight
CCFL 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
Original detection
unit
unit
1
Original size detection PWB
(Light emitting side)
(Light emitting side)
2
Original size detection PWB
(Light receiving side)
(Light receiving side)
b
Operation panel
unit
unit
1
MFP operation PWB
2
LVDS PWB
3
LCD INV-J PWB
4
LCD unit
5
Touch panel
a-1
b-2
a-2
b-3
b-4
b-5
b-1
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2)
3)
4)
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2)
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2)
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