Sharp AR-280 Service Manual page 30

AR-405
D. Motors, solenoids, and clutches
Motors
No. Code Name
Paper feed motor
1 DFM
Transport motor
2 DTM
Reverse motor
3 DRM
4 DFSOL Paper feed solenoid
5 DRSOL Reverse solenoid
E. Sensors, switches, detectors
10. FGOD
No. Code Name
1 DFD Original feed sensor
2 DTD Original timing sensor
3 RDD Reverse sensor
4 DWVR Original width volume
Original length sensor 1
5 DLS1
12 DLS2 Original length sensor 2
13 DLS3 Original length sensor 3
Original set sensor
6 DSS
7 DFMRS Paper feed motor rotation sensor
8 DWS Original width sensor
ADF open/close sensor
9 AUOD
10 FGOD Paper feed guide switch
11 TGOD Reverse guide switch
1/21/1999
2. DTM
1. DFM
Type
DC motor Drives the pickup roller, the separation roller,
and the resist roller.
Stepping motor Drives the transport belt roller.
Stepping motor Drives the reverse roller and the paper exit roller.
DC solenoid Presses the paper feed section weight plate onto
the original and opens/closes the shutter.
DC solenoid Drives the reverse flapper to select the paper
exit path or the reverse feed path.
6. DSS
9. AUOD
7. DFMRS
8. DWS
1. DFD
Type
Reflection sensor
Reflection sensor
Reflection sensor
Slide volume
Photo interrupter
Photo interrupter
Photo interrupter
Photo interrupter
Photo interrupter
Photo interrupter
Microswitch
Microswitch
Microswitch
3. DRM
5. DRSOL
4. DFSOL
Functions and operations
13. DLS3
5. DLS1
11. TGOD
12. DLS2
4. DWVR
2. DTD
Functions and operations
Turns HIGH when the original lead edge is
fed just in front of the resist roller.
Turns HIGH when the original lead edge is
transported from the paper feed section to
the vicinity of the transport belt.
Turns HIGH when the original lead edge is
transported to the reverse/paper exit path.
Original width detection on the tray
Original length detection on the tray
Original length detection on the tray
Original length detection on the tray
Original detection on the tray
Paper feed motor rotation detection
Original width detection
ADF unit open/close detection
Paper feed cover open/close detection
Reverse cover open/close detection
6 – 17
Contact/output
When this is ON, the weight plate
and the shutter fall.
When this is ON, the reverse path
is selected.
3. RDD
Contact/output
HIGH when the original is sensed.
HIGH when the original is sensed.
HIGH when the original is sensed.
HIGH when the original is sensed.
HIGH when the original is sensed.
HIGH when the original is sensed.
HIGH when the original is sensed.
Pulse output
LOW when the original is sensed.
LOW when closed.
LOW when closed.
LOW when closed.