AR-M550 (serv.man12). (6b) Laser scan unit, Image process section, Scanner section, Fusing section, SPF section - Sharp Copying Equipment Service Manual (repair manual). Page 6

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AR-M550/M620  DETAILS OF EACH SECTION  6 - 65
B. Major parts and signal functions
Code
Signal 
name
Name
Function/Operation
Type
Model
Note
TM1X
TM1X
Toner motor 1
Transports toner in the toner hopper to 
the developing unit. /Transports waste 
toner to the waste toner section.
Synchronous 
motor
TM2X
TM2X
Toner motor 2
Transports toner in the toner bottle to the 
toner hopper. 
Synchronous 
motor
TFSD
TFSD
Toner remaining quantity 
detection signal
Toner hopper remaining quantity 
detection
CRUM
CRUM lap
Stores the toner bottle information.
No.
Name
Operation
1
TH shutter
Serves as a shutter to supply toner from the toner bottle unit to the toner hopper. When a toner bottle 
unit is installed, the shutter opens.
2
Toner mixing roller
Mixes toner in the toner hopper.
3
Waste toner box drive gear
Drives the waste toner transport parts.
4
Waste toner transport plate
Remains toner evenly in the waste toner box.
5
Waste toner transport plate
Remains toner evenly in the waste toner box.
6
Waste toner shutter
Serves as a shutter to receive waste toner from the process unit.
7
TH shaft
Toner supply roller to the toner unit section.
8
Toner supply roller
Toner supply roller to the developing unit section.
TM2X
TM1X
1
7
6
5
4
3
2
10
9
8
11
12
9
8
7
6
5
4
3
2
1
9
8
7
6
5
4
3
2
1
12
11
10
12
11
10
4
3
2
1
4
3
2
1
2
1
1
2
2
1
1
2
PCU PWB
CRUSDA
CRUCLK
+5V2
GND2
B12B-PHDSS-B
CN-11
TNCA
GND2
+24V1
TM1a
TM1b
TM2a
TM2b
TFSD
+24V1
TFSD
GND2
TM1a
TM1b
GND2
+5V2
CRUCLK
CRUSDA
GND2
(NC)
(NC)
SRA-01T-3.2
GND2
PHR-4
+24V1
(NC)
TFSD
CRUCLK
CRUSDA
GND2
DRAWER TSR-04V-K
+5V2
SMR-02V-N/SMP-02V-NC
TM1a
TM1b
SRA-01T-3.2
SMR-02V-N/SMP-02V-NC
TM2a
TM2b
TSDP-12V-K/TSDR-12V-K
TONER HOPPER
8
7
2
1
TFSD
3
2
7
8
1
6
5
4
TFSD
CRUM
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