Sharp MX-DE28 (serv.man2) Service Manual ▷ View online
MX-DE28 ELECTRICAL SECTION 4 – 3
2. Actual wiring diagram
A
A
B
B
C
C
D
D
E
E
E
E
D
D
C
C
B
B
A
A
1/1
1
2
3
+5VR
D1PPD1
1
2
3
GND
D1PPD2
D1PPD1
+5VR
D1PPD2
GND
7
8
9
6
5
4
CZHR-12V-S
BU12P-TZ-S
4
8
9
5
7
6
5
6
3
7
2
1
GND
D1PRED4
D1PRED2
D1PRED1
D1PRED3
D1MDC
+5VR
PHR-7
RXD2
EHR-4
CN-D
+5V
GND
TXD2
(PHR-11)
/D1PFC
DPFM-T
/DPTRC
+24V
/DPFM-CLK
/DPFM-EN
GND
1
11
8
4
3
2
GND
7
9
5
D1LM
6
CN-H
+24V_CL
+24V_CL
10
LIFT UP UNIT
D2LM
+24V
D2PFC
D2LM
D2PFC
GND
D1PFC
D1PFC
+24V
DPTRC
DPTRC
/D2PFC
+24V_CL
4
3
2
1
CN-F
GND
D2LM
2
1
2
1
2
1
+24V
2
1
LIFT UP UNIT
D1LM
D1LM
GND
3
2
D2PQD
1
GND
D2PQD
+5VR
2
D1PFD
1
GND
DPFD1
3
+5VR
4
4
3
2
1
1
2
/CSSSET1
C2SS
D-GND
3
4
/CSS21
/CSS22
5
6
/CSS23
/CSS24
PHR-6
CPUC2
24V3
CPFC2
24V3
GND
CLUM2#
GND
1
/CPFPD2
5VN+R
/CLUD2
5VN+R
/CPFD2
/CPED2
GND
24V3
5VN+R
/CPUS2
/DSW_C2
CN-17
5VN+R
/CSS21
5
3
7
9
17
11
13
15
19
23
21
25
/CSS22
/CSS23
/CSS24
/CSPD2
/CSS2SET_D
/CSS2SET_M
27
2
4
6
8
10
12
14
16
18
20
22
24
26
28
5VN+R
5VN
TxD_LCC
RxD_LCC
/DTR_LCC
DSR_LCC
F-GND
RES_LCC
5VN
GND
24V4(OP)
GND(OP)
/TRC_LCC
(N.C)
39
30
32
34
36
38
40
29
31
33
35
37
PUDP-40V-S
CZHR-02V-S
24V3
1
2
CPFC2
C2PFC
PHR-2
2
GND
C2LUM#
LIFT UP UNIT
1
CLUM2#
179228-3
C2SPD
/CSPD2
GND
5VN+R
1
2
3
GND
DF11-6DS-2C +DF11-6DP-SP1(05)
GND
DF11-4DS-2C +DF11-4DP-SP1(05)
11
10
5
4
3
8
7
9
2
6
1
TxD_LCC
RxD_LCC
DSR_LCC
F-GND
RES_LCC
5VN
GND
/DTR_LCC
24V4(OP)
GND(OP)
/TRC_LCC
SMP-11V-NC
1
2
3
4
AC N
AC L
F.G.
N.C.
ELR-04V
1
2
3 ELP-03V
AC-L
F.G.
AC-N
2
1
3
11
12
10
1
2
3
DHOD
+5VR
DHOD
GND
PHR-8
5
6
3
7
2
1
GND
D2PRED4
D2PRED2
D2PRED1
D2PRED3
D2MDC
GND
4
8
+5VR
CN-B
CN-C
1
2
D2CDT
GND
CN-G
4
5
3
D2PQD
+5VR
GND
6
+5VR
8
7
DPFD1
GND
9
+5VR
CN-I
GND
GND
+5VR
10
11
12
15
+5VR
14
+5VR
16
+5VR
13
17
D2PUS
+24V_SOL
18
3
7
4
9
5
6
8
1
2
DHOD
GND
D2LUD
GND
GND
D1PPD2
GND
D2PED
PHDR-18VS
D1PPD1
+5VR
2
9
4
3
6
1
7
10
8
5
CN-E
/RESERVE_P1
TOOLTxD
Reset_in
GND
CPU_5V
PHDR-10VS
TOOL0
TOOLRxD
Reset_out
/RES_DSK
+24V_CL
3CS
2CS
R
ea
r v
ie
w
4CS
2
1
2
1
ELR-02V
ELP-02V
2
1
2
1
ELP-02V
ELR-02V
2
1
2
1
ELP-02V
ELR-02V
2
1
2
1
ELP-02V
ELR-02V
L
LCC heater
CZHR-02V-S
C2PUC
CPUC2
24V3
1
2
4
1
2
3
4
SMR-04V-N
SMP-04V-NC
1
2
3
(179228-3)
03XR-6H-P
(179228-3)
03XR-6H-P
(179228-3)
03XR-6H-P
(179228-3)
179228-3
12CZ-6H
(CZHR-12V-S)
PHR-12
(PHR-4)
04CK-6H-P
(PHR-2)
02CK-6H-P
02CZ-6H
(CZHR-02V-S)
D2CDT
D2CDT
1
2
3
GND
+5VR
1
2
3
+5VR
D2PED
1
2
3
GND
D2LUD
D2PED
+5VR
D2LUD
GND
4
5
6
3
2
1
CZHR-06V-S
BU06P-TZ-S
1
5
6
2
4
3
03XR-6H-P
(179228-3)
03XR-6H-P
(179228-3)
06CZ-6H
(CZHR-06V-S)
19
+5VR
D1PUS
18
/RESERVE_P2
+24V_SOL
17
20
CN-J
+24V_CL
(179228-3)
03XR-6H-P
06CZ-6H
(179228-3)
03XR-6H-P
D1CDT
D1CDT
(CZHR-06V-S)
1
179228-3
179228-3
3
2
+5VR
GND
2
D1PQD
GND
1
3
D1PQD
+5VR
2
1
3
D1PED
+5VR
3
2
1
GND
D1LUD
D1PED
+5VR
GND
D1LUD
4
6
5
CZHR-06V-S
1
2
3
1
BU06P-TZ-S
5
6
4
2
3
D1CDT
GND
GND
GND
GND
D1LUD
+5VR
6
10
D1PQD
2
3
8
9
7
PHDR-20VS
4
1
D1PED
+5VR
15
13
+5VR
14
179228-3
5
DSW_TD
11
12
GND
GND
16
+5VR
11
10
RESERVE_S3
GND
12
+5VR
03XR-6H-P
(179228-3)
C2LUD
/CLUD2
5VN+R
2
GND
3
1
03XR-6H-P
(179228-3)
1
2
/CPED2
3
GND
5VN+R
C2PED
03XR-6H-P
(179228-3)
DSW_C2
2
GND
/DSW_C2
1
3
5VN+R
17CZ-6Y
(CZHR-17V-Y)
03XR-6H-P
(179228-3)
C2PFD
2
GND
/CPFD2
1
5VN
3
6
5
4
12
15
14
11
15
10
CZHR-17V-Y
9
17
13
16
13
11
14
12
7
8
5
6
9
8
10
7
1
2
4
3
BU17P-TZ-S
16
17
3
2
1
Paper feed tray 2 paper transport detector
1
2
3
11
12
10
TxD_DSK
GND(OP)
DSR_DSK
GND
RxD_DSK
/DTR_DSK
RES_DSK
/TRC_DSK
GND
(N.C)
24V4(OP)
5VN
3
2
4
5
9
6
7
8
10
12
11
CN-18
1
PUDP-12V-S
TxD_DSK
GND(OP)
DSR_DSK
GND
RxD_DSK
/DTR_DSK
RES_DSK
/TRC_DSK
GND
GND
24V4(OP)
5VN
2
3
8
9
10
5
6
4
11
7
1
CN-A
PAP-12V-S
12
CW/CCW
N.C.
CLK
LD
ON/OFF
GND
+24V
DPFM
7
6
5
4
3
2
1
03XR-6H-P
1
2
11CK-6H-P
02CZ-6H
(CZHR-02V-S)
02CZ-6H
(CZHR-02V-S)
(PHR-2)
02CK-6H-P
07XR-6H-P
(179228-7)
Main unit
Paper feed tray 4 lift-up motor
Paper feed tray 4 paper feed clutch
TD 3CS main har
ness Ph
TD 4CS main har
ness Ph
Heater har
ness 2 Ph
16
5
4
3
2
P
aper f
eed har
ness Ph-C2SS
Dr
iv
e rela
y har
ness Ph
TD hor
iz
ontal tr
anspor
t har
ness Ph
TD paper f
eed har
ness Ph
TD paper f
eed har
ness Ph
Paper feed tray 2 upper limit detector
Paper feed tray 2 paper transport detector
Paper feed tray 2 open/close detection detector
Paper feed tray 2 transport clutch
Paper feed tray 2 paper feed clutch
Paper feed tray 2 lift-up motor
Paper feed tray 4 paper pass detector
Paper feed tray 3 paper pass detector 1
Paper feed tray 3 paper pass detector 2
Horizontal transport open/close detector
Paper feed tray 4 installation detector
Paper feed tray 4 paper quantity detector
Horizontal transport unit
4CS paper feed unit
Paper feed tray 4 paper empty detector
Paper feed tray 4 upper limit detector
Paper feed tray 3 paper empty detector
Paper feed tray 3 upper limit detector
Paper feed tray 3 installation detector
Paper feed tray 3 paper quantity detector
3CS paper feed unit
2CS paper feed unit
Tandem main PWB unit Ph
TD 4CS main unit connection
har
ness Ph
12
3
4
LCC connection
TD heater har
ness Ph
C2SS har
ness Ph
TD dr
iv
e har
ness Ph
Paper feed tray 2 paper rear edge detector
Paper feed tray 2 paper level detector
Desk paper transport clutch
Desk paper feed motor
Paper feed tray 3 paper feed clutch
Paper feed tray 3 lift-up motor
Heater (Upper stage)
Heater (Upper stage2)
Heater (Lower stage1)
MX-DE28 OPERATIONAL DESCRIPTIONS 5 – 1
MX-DE28
Service Manual
[5] OPERATIONAL DESCRIPTIONS
1. Electrical and mechanical relation diagram
A. Paper feed tray 2
Signal
name
Name
Function/operation
CPFM
Desk paper feed motor
This motor drives the paper feed and transport sections.
C2LUD
Paper feed tray 2 upper limit detector
This detector detects when the tray in paper feed tray reaches its upper limit.
C2LUM
Paper feed tray 2 lift-up motor
This motor lifts up the tray in paper feed tray.
C2PED
Paper feed tray 2 paper empty detector
This detector detects when there is paper in paper feed tray.
C2PFC
Paper feed tray 2 transport clutch
This clutch controls the ON/OFF status of the transport roller 1.
C2PFD
Paper feed tray 2 paper transport detector
This detector detects when paper is in the transport path for paper feed tray.
C2PUC
Paper feed tray 2 paper feed clutch
This clutch controls the ON/OFF status of the paper feed roller (paper feed tray 2).
C2SPD
Paper feed tray 2 paper level detector
This detector detects the amount of paper remaining in paper feed tray.
C2SS1
Paper feed tray 2 paper rear edge detector 1
The paper feeder recognizes that the tray for paper feed tray has been inserted when any of paper
feed tray paper rear edge detector 1 to 4 turns ON.
This detector detects the paper size of the tray in paper feed tray.
feed tray paper rear edge detector 1 to 4 turns ON.
This detector detects the paper size of the tray in paper feed tray.
C2SS2
Paper feed tray 2 paper rear edge detector 2
C2SS3
Paper feed tray 2 paper rear edge detector 3
C2SS4
Paper feed tray 2 paper rear edge detector 4
C2SSSET
Paper feed tray 2 attachment detection detector
This detector detects when paper feed tray is attached.
DSW-C2
Paper feed tray 2 open/close detection detector
This detector detects when the right door is opened or closed.
C2SS1
C2SS3
C2SS3
C2SS2
C2SS4
C2SS4
C2SSSET_D
C2SPD
C2LUD
C2PED
DSW-C2
C2PFD
1
2
3
4
5
6
6
7
C2PUC
CLUM2
CPFM
C2PFC
MX-DE28 OPERATIONAL DESCRIPTIONS 5 – 2
No.
Name
Function/operation
1
Paper pickup roller (Paper feed tray 2)
Feeds paper to the paper feed roller.
2
Paper feed roller (Paper feed tray 2)
Feeds paper to the paper transport section.
3
Separation roller (Paper feed tray 2)
Separates paper to prevent double feed.
4
Transport roller 1 (Drive)
Transports paper from the paper feed roller to the transport roller 2.
5
Transport roller 1 (Idle)
Applies a pressure to paper and the transport roller to provide a transport power of the transport roller to paper.
6
Transport roller 2
Transports paper from the transport roller 1 to the main unit.
7
Vertical transport roller 1 (Drive)
Transports paper from the transport roller 4 to the main unit.
MX-DE28 OPERATIONAL DESCRIPTIONS 5 – 3
B. Horizontal transport, Paper feed tray 3, Paper feed tray 4
D2CDT
D1CDT
D1PQD
D1PFC
D1LM
D2LM
DPTRC
D1LUD
D1PPD1
D1PPD2
DPFD1
DHOD
D1PED
D2PQD
D2LUD
D2PED
D2PFC
DPFM
2
1
9
11
13
4
10
12
3
6
5
8
7
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