Sharp MX-6240N / MX-7040N (serv.man23) Service Manual ▷ View online
MX-7040N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 21
15. PWB/Memory device
No.
Name
Function/Operation
1
LVDS PWB
Converts the display data signal to the LCD display signal. Controls the touch panel.
2
Document size detection PWB (Light receiving)
Outputs the document size detection signal.
3
CCD PWB
Scans document images and performs A/D conversion of the scanning signal.
4
Scanner lamp drive PWB
Drives the scanner lamp.
5
Document size detection PWB (Light emitting)
Drives the LED for the document size detection.
6
HL control PWB
Drives the heater lamp.
7
SCN Mother PWB
Process image data, controls the overall scanner, and controls the operation section. Interfaces
the MFP PWB and the operation PWB, the PCU PWB, the LSU PWB, and the FAX unit.
the MFP PWB and the operation PWB, the PCU PWB, the LSU PWB, and the FAX unit.
8
TC1 PWB (High voltage TC1 PWB)
Generates the primary transfer voltage.
9
PCI interface PWB
Interfaces the PCI power.
10
MC PWB (High voltage MC PWB)
Generates the main charger voltage and the DV bias voltage.
11
Paper feed tray detection PWB (Paper feed tray 1)
Opens/closes the paper feed tray and detects paper.
12
SUB AC POWER PWB
Controls the power of the heater lamp drive circuit. AC cord 2 power monitor signal (FW signal
output). (Only in the 2-power plug system models)
output). (Only in the 2-power plug system models)
13
SUB DC POWER PWB
Generates the power for the SPF and options.
14
Dehumidifier heater PWB
Controls the dehumidifier heater.
6
18
15
19
21
20
17
22
16
10
7
8
28
29
30
2
1
4
3
5
9
12
13
14
33
32
38
36
37
34
35
11
25
31
26
27
24
23
MX-7040N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 22
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
KEY PWB
Outputs the key operation signal.
29
Power lamp 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
DIMM 1
Main Reus memory (1GB)
34
DIMM 3
Sub Reus memory (1GB)
35
Sub Reus Flash memory
Stores the Sub Reus program data.
36
CF card memory
Stores the SOC program data.
37
SOCKET 1
SOC memory (2GB)
38
SOCKET 2
SOC memory (1GB)
No.
Name
Function/Operation
MX-7040N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 23
16. Fuses and thermostats
TS M
TS S
F302
F602
F604
F304
TS L
F2
F3
F2
F1
F4
F3
F1
F601
F603
F301
F102
F101
F401
F601
F501
F201
F301
F303
F305
F306
MX-7040N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 24
Fuses
Thermostats
Signal name
Name
Type
Location
100V series
200V series
(North America)
200V series
(Other than North
America)
F1
Fuse
T10AH 250V
–
–
SUB AC POWER PWB
F2
Fuse
T10AH 250V
–
–
SUB AC POWER PWB
F3
Fuse
T2.0AH 250V
–
–
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.
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