Sharp 15FS-25H Service Manual / Specification ▷ View online
MX-2300/2700 N/G EXTERNAL VIEW AND INTERNAL STRUCTURE 5 – 13
M. PWB
No.
Name
Function/Operation
Note
1
RD I/F PWB
Detects the sensors in the right door unit.
2
Tray 1 detection PWB
Detects the tray 1.
3
Tray 2 detection PWB
Detects the tray 2.
4
DC power PWB
Outputs the secondary side voltage.
5
Driver main PWB
Drives the transport motor and related sections.
6
MC PWB
Generates the high voltage for the main charger and the developing bias voltage.
7
Primary transfer PWB
Generates the primary transfer voltage.
8
AC power PWB
Controls the primary side power source.
9
Scanner control PWB
Controls the scanner section.
10
CCD PWB
Scans the document images.
11
Phase detection PWB
Adjusts the BL/CL drum phase.
12
CL inverter PWB
Drives the xenon lamp.
13
Document detection light receiving PWB
Outputs the document size detection signal.
14
Document detection light emitting PWB
Emits the document size detection LED lights.
15
LCD INV PWB
Generates the high voltage for the LCD backlight.
16
LVDS PWB
Converts the display signal and outputs to the LCD.
17
MFP OPE-P PWB
Outputs the key operation signal.
18
Power SW PWB
Outputs the ON/OFF control signal of the DC power source.
19
HL PWB
Controls the heater lamp.
20
Driver sub PWB
Drives the process motor and related sections.
21
Secondary transfer PWB
Generates the secondary transfer voltage and the transfer belt cleaning voltage.
22
Temperature/humidity sensor PWB
Detects the ambient temperature and humidity.
23
Manual paper feed width detection PWB
Detects the manual paper feed tray paper width.
24
MFPcnt PWB
Controls images and the whole machine.
25
Mother PWB
Interfaces the MFPcnt PWB and other PWB.
26
PCU PWB
Controls the engine section.
27
PCU Flash ROM PWB
Controls the PCU PWB.
28
BD PWB
Detects laser and outputs the synchronous signal.
29
LSU CNT PWB
Controls the LSU.
30
LSU thermistor
Measures the temperature in the LSU.
31
DL PWB
Discharges electric charges on the OPC drum.
32
DV initial PWB
Detects the DV model.
33
LD PWB
Controls laser lighting.
DV
LSU
control box
10
21
23
22
1
13
18
17
15
16
12
14
9
37
19
20
8
24
25
26
27
28
29
30
31
32
4
5
11
2
3
7
6
38
33
34
35
36
36
MX-2300/2700 N/G EXTERNAL VIEW AND INTERNAL STRUCTURE 5 – 14
N. Fuses/Thermostats
34
SCAN IN PWB
Rectifies the waveform of scanner image data.
DOCC PWB
Recognizes the document control pattern.
Option
35
BOOT ROM PWB
Stores the program to boot the printer controller.
36
PROGRAM ROM PWB
Stores the program.
37
SCN Flash ROM PWB
Stores the scanner control program.
38
HVR PWB
Divides the primary transfer electrode for each color to improve the transfer capability.
No.
Signal name
Name
Specifications
Section
1
HLTS1
Thermostat
Prevents against overheating of the fusing roller.
Fusing unit
2
HLTS2
Thermostat
Prevents against overheating of the fusing roller.
Fusing unit
3
HLTS3
Thermostat
Prevents against overheating of the fusing roller.
Fusing unit
4
F201
Fuse
T6.3AH250V
DC power PWB
5
F202
Fuse T6.3AH250V
DC
power
PWB
6
F203
Fuse
T6.3AH250V
DC power PWB
7
F204
Fuse
T6.3AH250V
DC power PWB
8
F205
Fuse T6.3AH250V
DC
power
PWB
9
F1
Fuse
20A 125V
AC power PWB
10
F2
Fuse
20A 125V
AC power PWB
11
F3
Fuse T2AH250V
AC
power
PWB
12
F4
Fuse
T2AH250V
AC power PWB
13
F1
Fuse
200mA 250V
LCD INV PWB
14
F101
Fuse
125V 12A
DC power PWB
15
F102
Fuse
T1AH250V
DC power PWB
16
F103
Fuse T8AH250V
DC
power
PWB
17
F301
Fuse
T5AH250V
DC power PWB
18
F1
Fuse
1.25A250V
CL invertor PWB
No.
Name
Function/Operation
Note
3
13
9
10
4
5
6
7
8
6
7
8
1
2
12
11
17
15
14
16
18
MX-2300/2700 N/G EXTERNAL VIEW AND INTERNAL STRUCTURE 5 – 15
O. Adjustment volumes
P. Gate
Signal name
Function/ Operation
Section
Note
VR201
+12V output adjustment
DC power PWB
VR203
+24V output adjustment
DC power PWB
VR204
+5VN output adjustment
DC power PWB
VR205
+3.3V output adjustment
DC power PWB
VR402
+5VO, +5VL output adjustment
DC power PWB
No.
Name
Function/ Operation
Note
1
ADU reverse gate
Switches the paper route: discharged to the inner tray or
discharged to the right tray.
discharged to the right tray.
2
ADU gate lower
Switches the transport route by switchback when paper is
transported to the duplex (ADU) section.
transported to the duplex (ADU) section.
VR201
VR203
VR203
VR205
VR402
VR204
1
2
MX-2300/2700 N/G EXTERNAL VIEW AND INTERNAL STRUCTURE 5 – 16
Q. Rollers
No.
Name
Function/ Operation
Note
1
Paper feed roller (Manual paper feed tray)
Feeds paper to the paper transport section.
2
Separation roller (Manual paper feed tray)
Separate paper to prevent against double feed.
3
Paper pickup roller (Manual paper feed tray)
Feeds paper to the paper feed roller.
4
Paper feed roller (No. 1 paper feed tray)
Feeds paper to the paper transport section.
5
Paper pickup roller (No. 1 paper feed tray)
Feeds paper to the paper feed roller.
6
Separation roller (No. 1 paper feed tray)
Separates paper to prevent against double feed.
7
Paper feed roller (No. 2 paper feed tray)
Feeds paper to the paper transport section.
8
Paper pickup roller (No. 2 paper feed tray)
Feeds paper to the paper feed roller.
9
Separation roller (No. 2 paper feed tray)
Separates paper to prevent against double feed.
10
Resist roller (Drive)
Transports paper to the transfer section. Controls the paper transport
timing to adjust relative relations between images and paper.
timing to adjust relative relations between images and paper.
11
Resist roller (Idle)
Applies a pressure to paper and the resist roller to give paper the
transport power of the transport roller.
transport power of the transport roller.
12
Transport roller 1 (Idle)
Applies a pressure to paper and the resist roller to give paper the
transport power of the transport roller.
transport power of the transport roller.
13
Transport roller 1 (Drive)
Transports paper from No. 3 and No. 4 paper feed tray to the
transport roller 4.
transport roller 4.
14
Transport roller 3 (Idle)
Reduces friction between paper and the paper guide.
15
Transport roller 4 (Idle)
Applies a pressure to paper and the transport roller to give paper the
transport power of the transport roller.
transport power of the transport roller.
16
Transport roller 4 (Drive)
Transports paper from the transport roller 1 and paper feed roller (No.
2 paper feed tray) to the transport roller 7.
2 paper feed tray) to the transport roller 7.
17
Transport roller 5 (Drive)
Transports paper from the paper feed tray 1 to the transport roller 7.
18
Transport roller 5 (Idle)
Applies a pressure to paper and the transport roller to give paper the
transport power of the transport roller.
transport power of the transport roller.
19
Transport roller 6 (Idle)
Reduces friction between paper and the paper guide.
20
Transport roller 7 (Idle)
Applies a pressure to paper and the transport roller to give paper the
transport power of the transport roller.
transport power of the transport roller.
35
34
32
33
36
37
24
25
27
24
25
27
26
38
28
39
29
3
2
6
20
19
18
17
15
9
14
12
13
13
16
21
22
4
23
5
31
30
1
10
11
7
8
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