Sharp MX-6500N / MX-7500N (serv.man11) Service Manual ▷ View online
MX-7500N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 23
15
AC power PWB
Controls the primary side power.
16
Paper size detection PWB (Paper feed tray 3)
Detects the paper size.
17
Paper size detection PWB (Paper feed tray 4)
Detects the paper size.
18
DC power PWB
AC cord 1 power monitor signal (FW signal output)
19
PCU PWB
Controls the engine section.
20
Driver PWB
Drives the motors.
21
TC2 PWB (High voltage TC2 PWB)
Generates the secondary transfer voltage.
22
Paper feed tray detection PWB (Paper feed tray 2)
Opens/closes the paper feed tray and detects paper.
23
MFP control PWB
Controls image data (compression, decompression, and filing), and controls the whole machine.
24
BD PWB
Detects laser and outputs the synchronous signal.
25
Right door interface PWB
Interfaces the signals of the sensors in the paper transport section.
26
LD PWB
Drives the laser diode and controls the power.
27
LSU PWB
Controls the LSU.
28
HM-KEY PWB
Outputs the key operation signal.
29
PW-KEY PWB
Power display lamp
30
USB I/F PWB
USB interface
31
HDD
Stores the MFP PWB program data, the filing data, the e-manual data, the watermark data, the log
data, and the authentication data. Also used as a work area.
data, and the authentication data. Also used as a work area.
32
SD card memory
Stores the Main Reus program data.
33
Sub Reus Flash memory
Stores the Sub Reus program data.
34
CF card memory
Stores the SOC program data.
35
SOCKET 1
SOC memory (2GB)
36
LCHM Drive PWB 1/2
Drives LCHM motor 1/2
37
PED cis PWB
Detects the paper edge
38
Double feed detection PWB
Detects double feed of paper
No.
Name
Function/Operation
MX-7500N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 24
16. Fuses and thermostats
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MX-7500N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 25
Fuses
Thermostats
Signal name
Name
Type
Location
200V series
(North America)
200V series
(Other than North America)
F1
Fuse
-
T10AH250V
SUB AC POWER PWB
F2
Fuse
-
T10AH250V
SUB AC POWER PWB
F3
Fuse
-
T2.0AH2
SUB AC POWER PWB
F1
Fuse
20A 250V
T10AH 250V
AC POWER PWB
F2
Fuse
-
T10AH 250V
AC POWER PWB
F3
Fuse
T2AH 250V
T2AH 250V
AC POWER PWB
F4
Fuse
-
T2AH 250V
AC POWER PWB
F101
Fuse
T12AH AC250V
SUB DC POWER PWB
F102
Fuse
T3.15AH AC250V
SUB DC POWER PWB
F301
Fuse
T5AH AC250V
SUB DC POWER PWB
F401
Fuse
T3.15AH AC250V
SUB DC POWER PWB
F601
Fuse
T6.3AH AC250V
SUB DC POWER PWB
F602
Fuse
T6.3AH AC250V
SUB DC POWER PWB
F603
Fuse
T6.3AH AC250V
SUB DC POWER PWB
F604
Fuse
T6.3AH AC250V
SUB DC POWER PWB
F201
Fuse
F5AH 250V
DC POWER PWB
F301
Fuse
T6.3AH AC250V
DC POWER PWB
F302
Fuse
T6.3AH AC250V
DC POWER PWB
F303
Fuse
T6.3AH AC250V
DC POWER PWB
F304
Fuse
T6.3AH AC250V
DC POWER PWB
F305
Fuse
T6.3AH AC250V
DC POWER PWB
F306
Fuse
F8AH 250V
DC POWER PWB
F501
Fuse
T2AH 250V
DC POWER PWB
F601
Fuse
T12AH 250V
DC POWER PWB
Signal name
Name
Type
Function/Operation
TS L
Thermostat L
Mechanical thermostat
Shuts down the heater lamp (HL_LM) circuit when the fusing section is overheated.
TS M
Thermostat M
Mechanical thermostat
Shuts down the heater lamp (HL_UM/HL_UW) circuit when the fusing section is overheated.
TS S
Thermostat S
Mechanical thermostat
Shuts down the heater lamp (HL_US) circuit when the fusing section is overheated.
MX-7500N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 26
17. Rollers
No.
Name
Function/Operation
1
Paper pickup roller (Paper feed tray 4)
Feeds paper to the paper feed roller.
2
Paper feed roller (Paper feed tray 4)
Feeds paper to the paper transport section.
3
Separation roller (Paper feed tray 4)
Separates paper to prevent double-feeding.
4
Transport roller 1 (Drive)
Transports paper fed from the paper feed tray to the transport roller 2.
5
Transport roller 1 (Idle)
Apply a pressure to paper and the transport roller to provide the transport power of the transport
roller to paper.
roller to paper.
6
Transport roller 2
Transports paper to the transport roller 9.
7
Paper pickup roller (Paper feed tray 3)
Feeds paper to the paper feed roller.
8
Paper feed roller (Paper feed tray 3)
Feeds paper to the paper transport section.
9
Separation roller (Paper feed tray 3)
Separates paper to prevent double-feeding.
10
Transport roller 3 (Drive)
Transports paper fed from the paper feed tray to the transport roller 4.
11
Transport roller 3 (Idle)
Apply a pressure to paper and the transport roller to provide the transport power of the transport
roller to paper.
roller to paper.
12
Transport roller 4
Transports paper to the transport roller 10.
13
Paper pickup roller (Paper feed tray 2)
Feeds paper to the paper feed roller.
14
Paper feed roller (Paper feed tray 2)
Feeds paper to the paper transport section.
15
Separation roller (Paper feed tray 2)
Separates paper to prevent double-feeding.
16
Transport roller 5
Transports paper to the transport roller 12.
17
Paper pickup roller (Paper feed tray 1)
Feeds paper to the paper feed roller.
18
Paper feed roller (Paper feed tray 1)
Feeds paper to the paper transport section.
19
Separation roller (Paper feed tray 1)
Separates paper to prevent double-feeding.
20
Transport roller 6 (Drive)
Transports paper fed from the paper feed tray to the transport roller 7.
56
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40
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48
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5
3
2
30
1
9
8
7
4 6 29
11 10 12
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