Read Sharp AR-M550 (serv.man10) Service Manual online
AR-M550/M620 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 13
FUM
FUM
Fusing motor
DC brushless
motor
motor
Drives the fusing section.
M1LUM
M1LUM
Paper feed tray lift-up
motor (Paper feed tray 3)
motor (Paper feed tray 3)
DC brush motor
Drives the lift plate of the
paper feed tray.
paper feed tray.
Selection of
Rotation mode/
Brake mode
Rotation mode/
Brake mode
M2LUM
M2LUM
Paper feed tray lift-up
motor (Paper feed tray 4)
motor (Paper feed tray 4)
DC brush motor
Drives the lift plate of the
paper feed tray.
paper feed tray.
Selection of
Rotation mode/
Brake mode
Rotation mode/
Brake mode
MIM
MIM
Scanner (reading) motor
Stepping motor
Drives the scanner
(reading) section.
(reading) section.
MM
MM
Main motor
DC brushless
motor
motor
Drives the paper feed trays
1, 2, 3, and 4, and the
manual paper feed section.
1, 2, 3, and 4, and the
manual paper feed section.
PGM
PGM
LSU motor
DC brushless
motor
motor
Drives the scanner (writing)
(LSU) unit mirror.
(LSU) unit mirror.
POM1
POM1
Paper exit motor 1
Stepping motor
Drives the paper transport
roller 16.
roller 16.
Selection of
Normal speed/
High speed
Normal speed/
High speed
POM2
POM2
Paper exit motor 2
Stepping motor
Drives the paper exit roller
1.
1.
Selection of
Normal speed/
High speed/
Reverse
rotation
Normal speed/
High speed/
Reverse
rotation
SLU
/SLUM
SPF paper tray lift motor
Stepping motor
Lifts up and down the SPF
paper feed tray.
paper feed tray.
SPFM
/SPFMD1
SPF paper feed motor,
paper transport motor
paper transport motor
Stepping motor
Drives the paper feed roller
and the transport roller.
and the transport roller.
SPSM
/SPFM2
SPF paper exit motor
Stepping motor
Drives the paper exit roller.
(SPF)
(SPF)
T1LUM
T1LUM
Paper feed tray lift-up
motor (Paper feed tray 1)
motor (Paper feed tray 1)
DC brush motor
Drives the lift plate of the
paper feed tray.
paper feed tray.
Selection of
Rotation mode/
Brake mode
Rotation mode/
Brake mode
T2LUM
T2LUM
Paper feed tray lift-up
motor (Paper feed tray 2)
motor (Paper feed tray 2)
DC brush motor
Drives the lift plate of the
paper feed tray.
paper feed tray.
Selection of
Rotation mode/
Brake mode
Rotation mode/
Brake mode
TM1
TM1
Toner motor 1
Synchronous
motor
motor
Transports toner in the
toner hopper to the
developing unit. /
Transports waste toner to
the waste toner section.
toner hopper to the
developing unit. /
Transports waste toner to
the waste toner section.
TM2
TM2
Toner motor 2
Synchronous
motor
motor
Transports toner in the
toner bottle to the toner
hopper.
toner bottle to the toner
hopper.
TRM
TRM
Resist roller front drive
motor
motor
Stepping motor
Drives the paper transport
roller 15.
roller 15.
Normal speed
mode/ Resist
roller front
paper transport
timing control
(Warp amount
control)
mode/ Resist
roller front
paper transport
timing control
(Warp amount
control)
TURM
TURM
Transfer separation
motor
motor
DC brush motor
Drives and separates the
transfer belt.
transfer belt.
The transfer belt
is pressed on
the OPC drum
only during
printing.
is pressed on
the OPC drum
only during
printing.
VPM
VPM
Vertical paper transport
motor
motor
Stepping motor
Drives the paper transport
rollers 24 and 39.
rollers 24 and 39.
Normal speed
mode
mode
Code
Signal
name
Name
Type
Function/Operation
Active
condition
MODEL
NOTE
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