Sharp AR-RP3, Service Manual

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[5] OPEREATIONAL DESCRIPTIONS
1. Major parts of the paper fed section
No. Part name Operation
1 Document length
sensor (L2) Detects the document length on
the tray.
2 Document length
sensor (L1) Detects the document length on
the tray.
3 Document set sensor
(W0) Detects presence of documents.
4 Document width sensor
(W1, W2, W3) Detects the document width.
5 Pickup roller Picks up documents.
6 Paper feed roller Feeds and transports documents.
7 Paper entry sensor
(PAPER) Detects transport of documents.
8 PS roller Makes synchronization between
the document lead edge and the
image lead edge.
9 PS follower roller Makes synchronization between
the document lead edge and the
image lead edge.
10 Transport roller Transports documents.
11 Transport follower roller Transports documents.
12 Paper exit sensor (PO) Detects transport of documents.
13 Paper exit follower roller Discharges documents.
14 Paper exit roller Discharges documents.
15 Reverse gate Opens/closes the document
reverse path.
16 Paper exit gate Separate document exit to the
intermediate or the paper exit tray.
17 Intermediate tray Discharges documents to the
intermediate tray during document
reverse.
2. Out line of operations
[Duplex documents]
1) Document set (Document set sensor ON)
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2) Document size detection (Document width sensors W1, W2, W3
detect the document width, and document length sensors L1, L2
detect the document length.)
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3) Copier COPY key ON
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4) SPF motor ON
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5) Pickup solenoid ON
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6) Pickup roller and paper feed roller rotation
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7) Paper entry sensor detects the document presence.
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8) PS roller rotation
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9) Copying (Front surface of document)
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10) Transport roller rotation
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11) Paper exit roller rotation
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12) Paper exit gate falls down. (Documents are discharged to the
intermediate tray.)
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13) Reverse gate falls down.
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14) Paper exit roller reverse rotation (Documents are fed to the re-
verse path.)
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15) Paper entry sensor detects document presence.
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16) PS roller rotation
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17) Copying (Back surface of document)
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18) Transport roller rotation
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19) Paper exit roller rotation
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20) Paper exit gate falls down (Documents are discharged to the
intermediate tray.)
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21) Reverse gate falls down.
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22) Paper exit roller reverse rotation (Documents are fed to the re-
verse path.)
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23) Paper entry sensor detects document presence.
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24) PS roller rotation
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25) Paper exit roller rotation
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26) Paper exit gate lifts up.
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27) Documents are fed to the paper exit tray.
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28) Next document
®
(YES)
®
Go to 4).
¯
(NO)
29) SPF motor OFF
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