Sharp AR-M550 (serv.man12) Service Manual ▷ View online
AR-M550/M620 DETAILS OF EACH SECTION 6 - 124
[CIS section]
A. Major parts and signal functions
B. Operational descriptions
(1) Document scan
C. Maintenance and parts replacement
(1) Maintenance list
✕
: Check (Clean, replace, or adjust as necessary.)
❍
: Clean
▲
: Replace
∆
: Adjust
✩
: Lubricate
❏
: Shift position
Code
Signal name
Name
Function/Operation
Type
Note
CIS
CIS
CIS control PWB
Scans document images (back surface) and controls the
CIS unit.
CIS unit.
S22B-PHDSS-B
CN12
CN11
S20B-PHDSS-B
S20B-PHDSS-B
11
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
STRC
SPFC
SRRC
SPFFAN
STRBC
SRRBC
SPF SET
/SLUMB
SLUMA
SLUMB
SLUMA
SLUMB
/SLUMA
SPWS
STLD
SPPD3
SPOD
SPED2
SPPD4
SOCD
SPLS1
SPLS2
17
16
18
12
13
13
15
14
19
20
20
CN2
B32B-PHDSS-B
B32B-PHDSS-B
12
18
1
8
14
13
5
9
3
4
4
2
6
16
7
17
20
19
15
10
11
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
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
/SLUMB
SLUMA
SLUMB
STRRBC
STRRC
STRRC
STRRBC
STRRBC
5V2
24V3
/SPFMB
GND
SPED1
STUD
24V3
/SPFMA
SCOV
SPPD1
SPFMO2
SPFMO1
SPFMB
SPFMB
VAREF
GND
SPFMA
SPPD2
GND
GND
5V1
SCN cnt PWB
FFC-35Pin
12V2
24V3
RXD_CCD2
TXD_CCD2
CLK_CCD2
3.3V3
GND
FRM_CCD2
GND
PAGE2
ADD_CCD2
ADD_CCD2
S26B-PHDSS-B
/CISSET
CN10
GND
GND
5V2
3.3V3
20
24
18
17
15
10
21
23
13
19
12
11
14
16
22
25
26
26
5V2
2_DATA1+
2_DATA0-
2_DATA0+
2_DATA0-
2_DATA0+
2_DATA1-
2_CLK-
2_CLK+
/2_DBL-
/2_DBL+
2_CLK+
/2_DBL-
/2_DBL+
RES_CCD2
9
1
7
5
4
6
8
2
3
3
SPF PWB
CIS
CIS unit: The CIS (Contact Image Sensor) unit is the contact type
image scan sensor, and is assembled to the SPF to scan
document images.
document images.
The LED light in the CIS unit is radiated to a document, and
the reflected light is passed through the lens to the photo-
electric conversion elements to form images.
the reflected light is passed through the lens to the photo-
electric conversion elements to form images.
(Pixel: 7196 pixels, resolution: 600dpi)
The CIS and the CCD assembled in the lens unit allow
simultaneous scan of duplex surfaces of a document.
simultaneous scan of duplex surfaces of a document.
AR-M550U/M550N (PM: 250K)
When
calling
250K 500K 750K 1000K 1250K 1500K 1750K 2000K
Remark
AR-620U/M620N (PM: 300k)
300K 600K 900K 1200K 1500K 1800K 2100K 2400K
Unit name
No.
Part name
SPF
Document
feed/transport
section
feed/transport
section
1
Exposure section (CIS unit)
❍
❍
❍
❍
❍
❍
❍
❍
❍
(Note 1)
Replacement reference: For replacement, refer to each paper feed port counter value.
SPF section : 100K or 1 year
1
AR-M550/M620 DETAILS OF EACH SECTION 6 - 125
(2) Maintenance and parts replacement
(Replacement parts)
a-1. CIS control PWB/CIS unit
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
the previous section, “[Paper feed tray section]”)
3) Remove the harness, then remove the PWB cover.
4) Remove each cable, and remove the PWB.
5) Loosen the hinge screws to lower the two fittings.
6) Open the SPF to remove the paper guide.
7) Remove the ground lead and CIS.
Caution when assembling
• When assembling the flat cable, first attach the lower side then the
upper side.
• Clean the paper guide glass surface.
No.
Unit
Parts
a
1
CIS control PWB/CIS unit
❍
a-1
AR-M550/M620 DETAILS OF EACH SECTION 6 - 126
[Paper exit section]
A. Major parts and signal functions
B. Operational descriptions
(1) Document feed, transport, scan, paper exit, and
operating speed
The document fed by the take-up roller is sent through the paper feed
roller and the transport roller to the resist roller section.
roller and the transport roller to the resist roller section.
In the resist roller section, the document lead edge and the scan start
position are synchronized. The document is transported to the scan
section. After being scanned, the document discharged to the docu-
ment exit tray by the paper exit roller.
position are synchronized. The document is transported to the scan
section. After being scanned, the document discharged to the docu-
ment exit tray by the paper exit roller.
The document transport speed varies depending on the scan mode
and the scan magnification ratio as shown below.
and the scan magnification ratio as shown below.
Code
Signal
name
Name
Function/Operation
Type
Model
Note
SOCD
SOCD
SPF open/close detector
SPF unit open/close detection
Transmission type
Sensor
SPOD
SPOD
SPF paper exit detector
SPF paper exit detection
Transmission type
Sensor
SPPD3
SPPD3
SPF document paper pass detector 3
SPF document paper pass detection 3
Transmission type
Sensor
SPPD4
SPPD4
SPF document paper pass detector 4
SPF document paper pass detection 4
Transmission type
Sensor
SRRC
SRRC
SPF No. 2 resist clutch
SPF transport roller 3 ON/OFF control
Electromagnetic clutch
SRRBC
SRRBC
SPF No. 2 resist roller brake clutch
SPF transport roller 3 braking
Electromagnetic clutch
SPSM
LSPFH2
SPF paper exit motor
Drives the paper exit roller. (SPF)
Stepping motor
1
1
3
2
SPOD
5VPOD
5V2
GND
3
SOCD
B3B-PH-K-S
2
GND
B3B-PH-K-S
5V2
SPED2
10
1
3
3
SPPD3
3
9
7
2
5
B3B-PH-K-S
8
12
SPPD4
1
SPPD4
2
4
2
11
STLD
6
B3B-PH-K-S
GND
SPPD3
1
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
5V2
GND
5V2
GND
5V2
GND
1
2
3
4
5
6
2
3
4
5
6
12
11
10
9
8
7
SMP-12V-NC
SMR-12V-N
5V1
34
31
33
32
GND
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
S22B-PHDSS-B
CN12
CN11
S20B-PHDSS-B
S20B-PHDSS-B
/SPFMA1
/SPFMB1
B12B-PH-K-S
SPFMB1
/SPFMA2
SPFMA1
SPFMA2
24V3
SPFMB2
24V3
24V3
/SPFMB2
CN1
24V3
11
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
STRC
SPFC
SRRC
SPFFAN
STRBC
SRRBC
SPF SET
/SLUMB
SLUMA
SLUMB
SLUMA
SLUMB
/SLUMA
SPWS
STLD
SPPD3
SPOD
SPED2
SPPD4
SOCD
SPLS1
SPLS2
17
16
18
12
13
13
15
14
19
20
20
B5B-PH-K-S
N.C
2
3
3
1
4
5
5
CN6
CN2
B32B-PHDSS-B
B32B-PHDSS-B
12
18
1
8
14
13
5
9
3
4
4
2
6
16
7
17
20
19
15
10
11
11
9
19
6
3
18
21
15
2
14
11
22
8
4
1
17
12
16
20
7
5
13
10
11
10
10
12
9
7
8
5
4
3
4
3
1
6
2
/SPFMB2
SPFMB2
24V3
24V3
SPFMA2
/SPFMA2
1
6
4
5
3
2
2
1
6
4
5
3
2
2
SMR-06V-B
SMP-06V-BC
21
22
23
24
25
26
27
28
29
30
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
/SLUMB
SLUMA
SLUMB
STRRBC
STRRC
STRRC
STRRBC
STRRBC
5V2
24V3
/SPFMB
GND
SPED1
STUD
24V3
/SPFMA
SCOV
SPPD1
SPFMO2
SPFMO1
SPFMB
SPFMB
VAREF
GND
SPFMA
SPPD2
GND
GND
24V3
/STRRC
24V3
24V3
/STRRBC
1
/STRRC
2
24V3
PHNR-2-H
+BU2P-TR-P-H
+BU2P-TR-P-H
24V3
PHNR-3-H
+BU3P-TR-P-H
+BU3P-TR-P-H
3
1
/STRRBC
N.C
N.C
2
PHNR-2-H
PHNR-3-H
1
2
2
1
2
3
2
3
5V1
SCN cnt PWB
FFC-35Pin
12V2
24V3
RXD_CCD2
TXD_CCD2
CLK_CCD2
3.3V3
GND
FRM_CCD2
GND
PAGE2
ADD_CCD2
ADD_CCD2
S26B-PHDSS-B
/CISSET
CN10
GND
GND
5V2
3.3V3
20
24
18
17
15
10
21
23
13
19
12
11
14
16
22
25
26
26
5V2
2_DATA1+
2_DATA0-
2_DATA0+
2_DATA0-
2_DATA0+
2_DATA1-
2_CLK-
2_CLK+
/2_DBL-
/2_DBL+
2_CLK+
/2_DBL-
/2_DBL+
RES_CCD2
9
1
7
5
4
6
8
2
3
3
SPF PWB
STRRC
SPPD3
SPPD4
SOCD
SPOD
STRRBC
SPSM
Scan mode
Magnification ratio
Document transport
speed
Single surface scan
Up to 117%
360mm/sec
Single surface scan
118% or above
220mm/sec
Duplex scan
Up to 100%
220mm/sec
Duplex scan
101% or above
110mm/sec
AR-M550/M620 DETAILS OF EACH SECTION 6 - 127
C. Maintenance and parts replacement
(1) Maintenance list
✕
: Check (Clean, replace, or adjust as necessary.)
❍
: Clean
▲
: Replace
∆
: Adjust
✩
: Lubricate
❏
: Shift position
(2) Maintenance and parts replacement
(Replacement parts)
a-1. SPF paper exit motor
1) Remove the rear cover. (See “a-1. Cabinet” in the previous sec-
tion, “[External outfit section]”)
2) Remove the SPF paper feed/paper transport motor.
AR-M550U/M550N (PM: 250K)
When
calling
250K 500K 750K 1000K 1250K 1500K 1750K 2000K
Remark
AR-620U/M620N (PM: 300k)
300K 600K 900K 1200K 1500K 1800K 2100K 2400K
Unit name
No. Part name
SPF
section
section
Paper exit
section
section
1
No. 2 resist roller
❍
❍
❍
❍
❍
❍
❍
❍
❍
2
Paper exit roller
❍
❍
❍
❍
❍
❍
❍
❍
❍
1
2
No.
Unit
Parts
a
1
SPF paper exit motor
2
SPF paper transport roller 3 brake
clutch
clutch
3
SPF paper transport roller 3 clutch
4
No. 2 resist roller (Drive)
❍
5
Paper exit roller (Drive)
❍
6
SPF document paper pass detector 3
7
SPF document paper pass detector 4
8
SPF paper exit detector
9
SPF open/close detector
a-1
a-2
a-3
a-4
a-6
a-7
a-8
a-9
a-5
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