Read Sharp AR-M700 (serv.man22) Service Manual online
AR-M550/M620/M700 DETAILS OF EACH SECTION 6 - 117
B. Operational descriptions
(1) Document tray lift operation
When a job is started, the document tray is lifted until a document at
the top in the document tray turns on the document upper limit sensor
(STUD).
the top in the document tray turns on the document upper limit sensor
(STUD).
The pressure between the document at the top in the document tray
and the take-up roller is maintained at a constant level to improve the
paper feed capability.
and the take-up roller is maintained at a constant level to improve the
paper feed capability.
When paper to be scanned is exhausted, the document empty sensor
(SPED1) turns off and the document tray moves down automatically
until the lower limit sensor detects it.
(SPED1) turns off and the document tray moves down automatically
until the lower limit sensor detects it.
Up and down movements of the document tray are performed by the
lift motor (normal rotation, reverse rotation) and the lift gear.
lift motor (normal rotation, reverse rotation) and the lift gear.
C. Maintenance and parts replacement
(1) Maintenance and parts replacement
(Replacement parts)
a. Document tray unit
1) Remove the cabinet. (See “a-1. Cabinet” in the previous section,
“[External outfit section]”)
2) Disconnect the connector, and remove the document tray unit.
a-1. SPF document length detector 1
a-2. SPF document length detector 2
a-3. SPF document size (width) detection analog data detector
1) Remove the cabinet. (See “a-1. Cabinet” in the previous section,
“[External outfit section]”)
2) Remove the document tray unit. (See “a. Document tray unit” in
this section)
3) Remove the screw, and remove the cover.
STLD
SPED1
STUD
No.
Unit
Parts
a
Document tray unit
1
SPF document length detector 1
2
SPF document length detector 2
3
SPF document size (width)
detection analog data detector
detection analog data detector
b
1
SPF paper tray lift motor
2
SPF paper tray lower limit detector
3
SPF document empty detector
a
b-3
b-1
b-2
a-1
a-2
a-3
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