Read Sharp MX-6500N / MX-7500N (serv.man28) Service Manual online
MX-7500N ELECTRICAL SECTION 14 – 33
C4SPD
Cassette 4 paper
remaining quantity
detection
remaining quantity
detection
Cassette 4 paper
remaining quantity
detection
remaining quantity
detection
–
–
CN3
B-14
PCU PWB
3-step
remaining
quantity
detection
according to
cassette lifting
(L to H to L)
remaining
quantity
detection
according to
cassette lifting
(L to H to L)
C4SS1
Cassette 4 paper size
detection 1
detection 1
Cassette 4 paper size
detection 1
detection 1
Size
detection
SW ON
–
CN3
A-2
PCU PWB
C4SS2
Cassette 4 paper size
detection 2
detection 2
Cassette 4 paper size
detection 2
detection 2
Size
detection
SW ON
–
CN3
A-3
PCU PWB
C4SS3
Cassette 4 paper size
detection 3
detection 3
Cassette 4 paper size
detection 3
detection 3
Size
detection
SW ON
–
CN3
A-4
PCU PWB
C4SS4
Cassette 4 paper size
detection 4
detection 4
Cassette 4 paper size
detection 4
detection 4
Size
detection
SW ON
–
CN3
A-5
PCU PWB
CCFT
LCD backlight [CCFT
cool cathode ray tube]
cool cathode ray tube]
LCD backlight
ON
OFF
CN9
21
SCN-
MotherCNT
MotherCNT
CCHPD_C
Charger cleaner home
position (C)
position (C)
Charger cleaner home
position (C) detection
position (C) detection
–
Home
position
detection
CN18
30
PCU PWB
CCHP_C
CCHPD_K
Charger cleaner home
position (K)
position (K)
Charger cleaner home
position (K) detection
position (K) detection
–
Home
position
detection
CN18
20
PCU PWB
CCHP_K
CCHPD_M
Charger cleaner home
position (M)
position (M)
Charger cleaner home
position (M) detection
position (M) detection
–
Home
position
detection
CN20
30
PCU PWB
CCHP_M
CCHPD_Y
Charger cleaner home
position (Y)
position (Y)
Charger cleaner home
position (Y) detection
position (Y) detection
Home
position
detection
CN20
20
PCU PWB
CCHP_Y
CCM_C_A
Charger cleaner motor
phase A (C)
phase A (C)
Charger cleaner motor
phase A (C) control
phase A (C) control
–
–
CN18
25
PCU PWB
CCM_C_B
Charger cleaner motor
phase B (C)
phase B (C)
Charger cleaner motor
phase B (C) control
phase B (C) control
–
–
CN18
26
PCU PWB
CCM_K_A
Charger cleaner motor
phase A (K)
phase A (K)
Charger cleaner motor
phase A (K) control
phase A (K) control
–
–
CN18
15
PCU PWB
CCM_K_B
Charger cleaner motor
phase B (K)
phase B (K)
Charger cleaner motor
phase B (K) control
phase B (K) control
–
–
CN18
16
PCU PWB
CCM_M_A
Charger cleaner motor
phase A (M)
phase A (M)
Charger cleaner motor
phase A (M) control
phase A (M) control
–
–
CN20
25
PCU PWB
CCM_M_B
Charger cleaner motor
phase B (M)
phase B (M)
Charger cleaner motor
phase B (M) control
phase B (M) control
–
–
CN20
26
PCU PWB
CCM_Y_A
Charger cleaner motor
phase A (Y)
phase A (Y)
Charger cleaner motor
phase A (Y) control
phase A (Y) control
–
–
CN20
15
PCU PWB
CCM_Y_B
Charger cleaner motor
phase B (Y)
phase B (Y)
Charger cleaner motor
phase B (Y) control
phase B (Y) control
–
–
CN20
16
PCU PWB
CCMD_C
Charger cleaner shift
detection (C)
detection (C)
Charger cleaner shift
detection (C)
detection (C)
–
–
CN18
22
PCU PWB
Detecting one
rotation by
4 sets of H to L.
rotation by
4 sets of H to L.
CCMD_K
Charger cleaner shift
detection (K)
detection (K)
Charger cleaner shift
detection (K) control
detection (K) control
–
–
CN18
12
PCU PWB
Detecting one
rotation by
4 sets of H to L.
rotation by
4 sets of H to L.
CCMD_M
Charger cleaner shift
detection (M)
detection (M)
Charger cleaner shift
detection (M)
detection (M)
–
–
CN20
22
PCU PWB
Detecting one
rotation by
4 sets of H to L.
rotation by
4 sets of H to L.
CCMD_Y
Charger cleaner shift
detection (Y)
detection (Y)
Charger cleaner shift
detection (Y)
detection (Y)
–
–
CN20
12
PCU PWB
Detecting one
rotation by
4 sets of H to L.
rotation by
4 sets of H to L.
CISFM_LD
CIS Fan lock detection
CIS Fan lock detection
–
–
CN14
23
PCU PWB
CISFM_V
CIS Fan ON/OFF
CIS Fan ON/OFF
–
–
CN14
22
PCU PWB
CL_ON
Scanner lamp
Radiates lights to the
document for the CCD
to scan the document
images.
document for the CCD
to scan the document
images.
ON
OFF
CN7
3
SCN-
MotherCNT
MotherCNT
CN_OCFAN_
LOCK
LOCK
CLFM (OC_FAN) lock CLFM
lock
Normal
operation
Stop
CN1
2
SCN-
MotherCNT
MotherCNT
CNCT_RSVFAN/
FAN_CNCT_HDD
FAN_CNCT_HDD
MFP_FAN/HDD_FAN
lock
lock
Detects the MFP_FAN/
HDD_FAN lock.
HDD_FAN lock.
Normal
operation
Stop
CN1002/
CN1013
CN1013
4/4
SCN-
MotherCNT
MotherCNT
CNCT_SPSFAN
Sub power supply fan
lock
lock
Detects the sub power
supply fan lock.
supply fan lock.
Normal
operation
Stop
CN1015
4
SCN-
MotherCNT
MotherCNT
Signal name
Name [Type]
Function/Operation
Connector level
Connector
No.
Pin
No.
No.
PWB name
NOTE
L
H
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