Spf Unit <Al-1622 Only> - Sharp AL-1611 Service Manual

7. SPF UNIT <AL-1622 ONLY>
[Sensors and detectors]
No. Code
1 W0 Document set sensor
2 COVER Open/close sensor
3 W1 Document sensor (A4R, LTR, A5)
4 W2 Document width sensor (B4R, B5)
5 W3 Document width sensor (WLTR, A5R, A4, LT)
6 PSOL Pickup solenoid
7 PAPER Paper entry sensor
9 CLH Transport clutch
10 MOT SPF motor
12 — Interface PWB
13 L1 Document length detection SW (Short)
14 L2 Document length detection SW (Long)
15 COVER OPEN Book sensor
8. PAPER FEED SECTION <AL-1622 ONLY>
No. Name
1 Document length sensor (L2)
2 Document length sensor (L1)
3 Document length sensor (W0)
4 Document width sensor (W1, W2, W3)
5 Pickup roller
6 Paper feed roller
7 Paper entry sensor (PAPER)
8 PS roller
9 PS follower roller
10 Transport roller
11 Transport follower roller
12 Paper exit follower roller
13 Paper exit roller
14
15
5
4
3
Name
Photo transmission
Photo transmission
Photo transmission
Photo transmission
Photo transmission
Photo transmission
Stepping motor
Photo transmission
Photo transmission
Photo transmission
9 10 11 1 1
Detects the document length on the tray.
Detects the document length on the tray.
Detects the presence of document.
Detects the document width.
Picks up the document.
Feed and transport the document.
Detects the document transport.
Makes synchronization between the document lead edge and the image lead edge.
Makes synchronization between the document lead edge and the image lead edge.
Transports the document.
Transports the document.
Discharges the document.
Discharges the document.
AL-1611/AL-1622 EXTERNAL VIEWS AND INTERNAL STRUCTURE
4 – 6
13
12
10
9
6
7
2
1
Type Function, operation
Document presence detection
Paper feed unit open/close detection
Tray document width detection
Tray document width detection
Tray document width detection
—
Document presence detection
—
Tray paper feed, transport, paper exit roller drive
— SPF control and communication with the copier body
Tray document length detection
Tray document length detection
Detects SPF floating.
1
Operation
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