Sharp MX-M363N / MX-M363U / MX-M503N / MX-M503U (serv.man17) Service Manual ▷ View online
MX-M503N EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 17
No.
Name
Function/Operation
1
RD I/F PWB
Interfaces each sensor signal in the right door unit section.
2
Paper size detection PWB
Detects the paper size in the paper feed tray.
3
DC power PWB
Generates a DC voltage.
4
Motor drive PWB
Drives each motor in the paper transport section.
5
HV PWB
Generates the main charger voltage, the developing bias voltage, and the transfer voltage.
6
AC power PWB
Controls the power source in the primary side.
7
Scanner control PWB
Controls the scanner and the operation panel section.
8
CCD PWB
Scans document images.
9
LED drive PWB (N model) / Inverter PWB (U model)
Drives the scanner lamp.
10
Document detection light collector PWB
Outputs the document size detection signal.
11
Document detection light emitting PWB
Drives the document size detection LED.
12
LCD INV PWB (MX-M283N, MX-M363/M453/M503 N/U)
Generates the high voltage for the LCD back-light.
13
LVDS PWB
Converts display signals into LCD display signals.
14
MFP OPE PWB
Outputs the key operation signal.
15
Power SW PWB
Controls ON/OFF of the DC power source.
16
HL PWB
Controls the heater lamp.
17
MFP PWB
Controls data related to images, and controls the whole machine.
18
Mother PWB
Interfaces signals of the MFP PWB and another PWB.
19
PCU PWB
Controls the engine section.
20
PCU Flash ROM PWB
The ROM PWB that control the PCU PWB.
22
LSU PWB
Controls the LSU.
23
LD PWB
Controls laser lighting.
24
PROG1 ROM PWB
Program ROM PWB for booting the printer controller
25
PROG2 ROM PWB
MFP PWB program ROM PWB
26
SCN Flash ROM PWB
Scanner control program ROM PWB
27
USB I/F PWB
USB I/F
28
Scanner function expansion PWB (Option for N model)
Controls compression and decompression of image data.
29
WH PWB (Service kit: Dehumidifier heater)
Controls the dehumidifier heater.
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MX-M503N EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 18
N. Fuses/Thermostats
Signal name
Name
Specifications
Section
TS UM
Thermostat
Fusing roller overheat protection
Fusing unit
TS US
Thermostat
Fusing roller overheat protection
Fusing unit
No.
Signal name
Name
Specifications
Section
1
F201
Fuse
T6.3AH 250V
DC power PWB
2
F202
Fuse
T6.3AH 250V
DC power PWB
3
F203
Fuse
T6.3AH 250V
DC power PWB
4
F204
Fuse
T6.3AH 250V
DC power PWB
5
F205
Fuse
T6.3AH 250V
DC power PWB
6
F1
Fuse
15A 250V (100V) / T10AH 250V(200V)
AC power PWB
7
F2
Fuse
T10AH250V (200V only)
AC power PWB
8
F3
Fuse
T2AH 250V
AC power PWB
9
F4
Fuse
T2AH 250V (200V only)
AC power PWB
10
F101
Fuse
12A 125V (100V) / T6.3AH 250V (200V)
DC power PWB
11
F102
Fuse
T1AH 250V (100V) / T3.15AH 250V (200V)
DC power PWB
12
F103
Fuse
T8AH 250V (100V) / T5AH 250V (200V)
DC power PWB
13
F301
Fuse
T5AH 250V (100V) / T3.15AH 250V (200V)
DC power PWB
14
F1
Fuse
T0.8A 250V
LCD INV PWB (MX-M283/M363/M453/M503 N)
15
F1
Fuse
200mA 250V
LCD INV PWB (MX-M363/M453/M503 U)
16
F1
Fuse
1.25A 250V
CL inverter PWB (MX-M363/M453/M503 U)
10
13
11
12
3
2
1
4
5
5
6
7
7
9
8
TS_UM
TS_US
14
MX-M363/M453/M503 U
MX-M363/M453/M503 U
16
15
MX-M283/M363/M453/M503 N
1
1
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MX-M503N EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 19
O. Rollers
24
25
25
27
26
26
38
28
39
29
3
2
2
6
20
19
18
17
15
9
14
40
41
41
12
13
13
16
21
22
4
23
5
31
30
30
1
10
11
36
37
33
32
35
34
7
8
MX-M503N EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 20
No.
Name
Function/Operation
1
Paper feed roller (Manual paper feed tray)
Feeds paper to the paper transport section.
2
Separation roller (Manual paper feed tray)
Separates paper to prevent Double Feed.
3
Paper pickup roller (Manual paper feed tray)
Sends 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)
Sends paper to the paper feed roller.
6
Separation roller (No. 1 paper feed tray)
Separates paper to prevent 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)
Sends paper to the paper feed roller.
9
Separation roller (No. 2 paper feed tray)
Separates paper to prevent 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.
between images and paper.
11
Resist roller (Idle)
Applies a pressure to paper and the resist roller to give the transport power of the transport roller to the
paper.
paper.
12
Transport roller 1 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to the
paper.
paper.
13
Transport roller 1 (Drive)
Transports paper from No. 3 and No. 4 paper feed tray to the 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 the transport power of the transport roller to the
paper.
paper.
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.
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 the transport power of the transport roller to the
paper.
paper.
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 the transport power of the transport roller to the
paper.
paper.
21
Transport roller 7 (Drive)
Transports paper from the paper feed tray 1, 2, 3, and 4 to the transport roller 8.
22
Transport roller 8 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to the
paper.
paper.
23
Transport roller 8 (Drive)
Transports the paper to resist roller.
24
Transport roller 9 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to the
paper.
paper.
25
Transport roller 9 (Drive)
Transports paper from the fusing roller to the transport roller 1.
26
Transport roller 10 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to the
paper.
paper.
27
Transport roller 10 (Drive)
Transports paper from the transport roller 13 to the transport roller 11.
28
Transport roller 11 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to the
paper.
paper.
29
Transport roller 11 (Drive)
Transports paper from the transport roller 10 to the transport roller 12.
30
Transport roller 12 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to the
paper.
paper.
31
Transport roller 12 (Drive)
Transports paper from the transport roller 11 to the transport roller 8. / Transports the paper from the
manual paper feed tray to the transport roller 8.
manual paper feed tray to the transport roller 8.
32
Transport roller 13 (Drive)
Transports paper to the duplex (ADU) section. / Transports paper to the paper exit roller 2.
33
Transport roller 13 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to the
paper.
paper.
34
Paper exit roller 1 (Idle)
Applies a pressure to paper and the paper exit roller to give the transport power of the paper exit roller to
the paper.
the paper.
35
Paper exit roller 1 (Drive)
Discharges paper. / Transports paper to the right paper exit tray. / Transport paper to the duplex (ADU)
section.
section.
36
Paper exit roller 2 (Idle)
Applies a pressure to paper and the paper exit roller to give the transport power of the paper exit roller to
the paper.
the paper.
37
Paper exit roller 2 (Drive)
Discharges paper.
38
Fusing roller (Heating)
Heat and press toner onto paper to fuse images.
39
Fusing roller (Pressing)
Applies a pressure to the fusing roller (heating).
40
Transport roller 14 (Drive)
Transports paper from the paper feed tray 2 to the transport roller 4.
41
Transport roller 14 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to the
paper.
paper.
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