DOWNLOAD Sharp AR-M550 (serv.man12) Service Manual ↓ Size: 13.91 MB | Pages: 71 in PDF or view online for FREE

Model
AR-M550 (serv.man12)
Pages
71
Size
13.91 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / (6b) Laser scan unit, Image process section, Scanner section, Fusing section, SPF section
File
ar-m550-sm12.pdf
Date
PREV: Sharp AR-M550 (serv.man11) Service Manual

Sharp AR-M550 (serv.man12) Service Manual ▷ View online

AR-M550/M620  DETAILS OF EACH SECTION  6 - 112
[External outfit section]
A. Maintenance and parts replacement
(1) Maintenance and parts replacement
(Replacement parts)
a. SPF unit
1) Push down the fixing plate.
2) Remove the rear cover.
3) Remove the harness.
4) Remove the fixing screw.
5) Remove the SPF.
No.
Unit
Parts
a
SPF unit
1
Cabinet
2
Document mat
a-1
a
a-1
a-2
AR-M550/M620  DETAILS OF EACH SECTION  6 - 113
a-1. Cabinet 
1) Open the cover and remove the screws.
2) Open the SPF and remove the screws.
3) Unhook the claws on the tray side to remove the front cover.
4) Remove the rear cover.
a-2. Document mat
1) Open the SPF.
2) Remove the mat.
Caution when attaching
• Place the mat on the document base glass surface; close the SPF to
attach the mat; then open again and apply pressure by hand to
attach.
AR-M550/M620  DETAILS OF EACH SECTION  6 - 114
[Paper feed tray section]
A. Major parts and signal functions
OUT SLUMB
1
24V3
4
5
4
2
3
5
OUT /SLUMB
OUT /SLUMA
3
2
OUT SLUMA
1
5V2
2
SPED2
STLD
10
1
3
SPPD3
1
9
1
7
5
8
12
SPPD4
B3B-PH-K-S
4
3
2
11
STLD
2
3
B3B-PH-K-S
6
SPED2
GND
2
1
5
3
6
8
9
3
1
GND
2
5V2
VAREF
SPWS
3
SPLS2
2
PHNR-3-H
+BU3P-TR-P-H
6
SPWS
SPLS2
SPLS1
B3B-PH-K-S
2
1
1
3
GND
PHNR-9-H
+BU9P-TR-P-H
4
5V2
7
8
GND
5V2
7
1
5V2
SPLS1
GND
3
B3B-PH-K-S
2
VAREF
1
5
2
GND
3
9
4
GND
25
12
30
10
CN3
2
27
26
18
22
29
3
13
5
17
9
20
14
19
1
6
16
11
7
15
4
8
23
28
21
B34B-PHDSS-B
24
5V2
GND
GND
5V2
GND
5V2
GND
5V1
GND
1
2
3
4
5
6
12
11
10
9
8
7
SMR-05V-N
SMP-05V-NC
SMP-12V-NC
SMR-12V-N
PHNR-3-H
PHNR-9-H
5V1
SPF PWB
34
31
33
32
GND
GND
OUT SLUMA
/SRRBC
24V3 PM
24V3 SRRBC
GND
GND
GND
GND
OUT /SLUMA
24V3 STRC
N.C
5V2
GND
5VPOD
24V3 SRRC
5V2
VAREF
N.C
/SRRC
/STRBC
GND
5V2
5V2
OUT SLUMB
GND
/STRC
OUT /SLUMB
GND
5V2
5V2
24V3 STRBC
24V3 FAN
5V2
SCNcnt
PWB
S22B-PHDSS-B
CN12
CN11
S20B-PHDSS-B
11
1
2
3
4
5
6
7
8
9
10
STRC
SPFC
SRRC
SPFFAN
STRBC
SRRBC
SPF SET
/SLUMB
SLUMA
SLUMB
/SLUMA
SPWS
STLD
SPPD3
SPOD
SPED2
SPPD4
SOCD
SPLS1
SPLS2
17
16
18
12
13
15
14
19
20
CN2
B32B-PHDSS-B
12
18
1
8
14
13
5
9
3
4
2
6
16
7
17
20
19
15
10
11
9
19
6
3
18
21
15
2
14
11
22
8
4
1
17
12
16
20
7
5
13
10
21
22
23
24
25
26
27
28
29
30
32
31
24V3
24V3
SPFMO2
SPFMO1
GND
GND
STUD
SPED1
SPPD1
SCOV
VAREF
SPPD2
GND
5V2
GND
N.C
/SPFMA
SPFMA
/SPFMB
SPFMB
STRC
SPFC
SRRC
STRBC
SRRBC
SPF SET
/SLUMA
/SLUMB
SLUMA
SLUMB
STRRBC
STRRC
STRRC
STRRBC
5V2
24V3
/SPFMB
GND
SPED1
STUD
24V3
/SPFMA
SCOV
SPPD1
SPFMO2
SPFMO1
SPFMB
VAREF
GND
SPFMA
SPPD2
GND
GND
5V1
SPWS
/SLUMB
SPED2
STLD
SPWS
SPLS1
SPLS2
SCN
JNT
PWB
TX24-100R-LT-H1
CN1
T24FAZ-SMT-TF
GND
PD
PDSEL2
/F3
/F2
/F0
/F1
SEG0
PDSEL1
/BZR
N.C
GND
/KEYIN
PDSEL0
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CN5
SEG2
SEG1
MFP
OPE
PWB
CN101
T24FAZ-SMT-TF
PD
PDSEL2
/F3
/F2
/F0
/F1
SEG0
PDSEL1
/KEYIN
PDSEL0
SEG2
SEG1
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
5V2
FFC-24Pin
5V1
N.C
GND
5V1
N.C
GND
GND
GND
5V2
GND
GND
GND
5V2
GND
GND
5V2
GND
/BZR
N.C
CN4
TX25-100P-LT-H1
62
23
59
21
46
48
64
38
54
56
3
17
60
16
55
26
14
12
6
63
36
11
47
35
39
2
22
66
13
15
31
9
57
24
41
61
43
8
25
40
53
34
30
32
65
28
1
44
5
20
42
58
45
37
49
10
52
19
50
4
33
18
67
68
51
7
29
27
95
97
75
77
87
72
81
100
74
91
86
83
71
78
69
80
70
82
94
99
90
85
98
88
76
84
73
93
79
89
92
96
lcdD0+
lcdD1-
lcdCP2-
1_DATA2-
1_DATA1-
lcdM+
lcdD2+
1_DATA0+
/1_DBL-
lcdS+
lcdD3+
lcdCP2+
lcdD0-
lcdCP1+
lcdS-
lcdM-
1_DATA0-
1_CLK-
1_DATA2+
1_DATA3-
/1_DBL+
lcdD3-
1_DATA1+
lcdD2-
lcdCP1-
1_CLK+
1_DATA3+
lcdD1+
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
24V3
24V3
3.3V3
5V1
5V2
3.3V3
5V2
5V2
12V2
12V2
12V2
24V3
24V3
/CCDFAN
PDSEL1
PDSEL2
/KEYIN
SEG0
YH
/XL
/STSET
/STMPS
FRM_CCD1
CLK_CCD1
TXD_CCD1
RES_CCD1
RXD_CCD1
ADD_CCD1
PAGE1
/CL1
PDSEL0
PD
SEG1
SEG2
/F0
/F1
/F2
/F3
/BZR
lcdDIS
LCD_VEE
TH
/CCFT
/YL
XH
27
29
7
51
68
67
18
33
32
30
34
25
8
43
42
20
5
44
15
13
66
22
2
39
35
47
14
19
48
46
21
59
23
62
11
36
63
6
4
50
53
52
10
40
49
37
45
58
61
41
24
57
9
31
1
28
65
12
26
55
16
60
17
3
56
54
38
64
98
85
87
77
93
95
99
94
75
86
74
78
70
96
80
100
82
79
92
73
69
71
83
81
97
84
76
88
91
89
72
90
lcdD0+
lcdD1-
lcdCP2-
1_DATA2-
1_DATA1-
lcdM+
lcdD2+
1_DATA0+
/1_DBL-
lcdS+
lcdD3+
lcdCP2+
lcdD0-
lcdCP1+
lcdS-
lcdM-
1_DATA0-
1_CLK-
1_DATA2+
1_DATA3-
/1_DBL+
lcdD3-
1_DATA1+
lcdD2-
lcdCP1-
1_CLK+
1_DATA3+
lcdD1+
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
12V2
24V3
24V3
/CCDFAN
PDSEL1
PDSEL2
/KEYIN
SEG0
YH
/XL
/STSET
/STMPS
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
24V3
24V3
3.3V3
5V1
5V2
3.3V3
5V2
5V2
12V2
12V2
FRM_CCD1
CLK_CCD1
TXD_CCD1
RES_CCD1
RXD_CCD1
ADD_CCD1
PAGE1
/CL1
PDSEL0
PD
SEG1
SEG2
/F0
/F1
/F2
/F3
/BZR
lcdDIS
LCD_VEE
TH
/CCFT
/YL
XH
Code
Signal 
name
Name
Function/Operation
Type
Model
Note
SPED2
SPED2
SPF document empty detector
SPF document empty detection
Transmission type
Sensor
SPLS1
SPLS1
SPF document length detector 1
SPF document length detection (Short)
Transmission type
Sensor
SPLS2
SPLS2
SPF document length detector 2
SPF document length detection (Long)
Transmission type
Sensor
SPWS
SPWS
SPF document size (Width) 
detection analog data detector
SPF document size (Width) detection
Volume resistor
Other detector
STLD
STLD
SPF document tray lower limit 
detector
SPF document tray lower limit detection
Transmission type
Sensor 
/SLUMB /SLUMB SPF paper tray lift motor
Lifts up and down the SPF paper feed tray. Stepping motor
AR-M550/M620  DETAILS OF EACH SECTION  6 - 115
B. Operational descriptions
(1) Document tray lift operation
When a job is started, the document tray is lifted until a document at
the top in the document tray turns on the document upper limit sensor
(STUD).
The pressure between the document at the top in the document tray
and the take-up roller is maintained at a constant level to improve the
paper feed capability.
When paper to be scanned is exhausted, the document empty sensor
(SPED1) turns off and the document tray moves down automatically
until the lower limit sensor detects it.
Up and down movements of the document tray are performed by the
lift motor (normal rotation, reverse rotation) and the lift gear.
C. Maintenance and parts replacement 
(1) Maintenance and parts replacement
(Replacement parts)
a. Document tray unit
1) Remove the cabinet. (See “a-1. Cabinet” in the previous section,
“[External outfit section]”)
2) Disconnect the connector, and remove the document tray unit.
a-1. SPF document length detector 1
a-2. SPF document length detector 2
a-3. SPF document size (width) detection analog data detector
1) Remove the cabinet. (See “a-1. Cabinet” in the previous section,
“[External outfit section]”)
2) Remove the document tray unit. (See “a. Document tray unit” in
this section)
3) Remove the screw, and remove the cover.
STLD
SPED1
STUD
No.
Unit
Parts
a
Document tray unit
1
SPF document length detector 1
2
SPF document length detector 2
3
SPF document size (width) 
detection analog data detector
b
1
SPF paper tray lift motor
2
SPF paper tray lower limit detector
3
SPF document empty detector
a
b-3
b-1
b-2
a-1
a-2
a-3
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