Read Sharp AR-651 (serv.man8) Service Manual online
AR-651/810 GENERAL OPERATIONS 4 - 2
4. 2. 2. Standby state (ready for copying)
• Keys on control panel enabled
• When no key is pressed for a certain period of time:
~ Set number “1” and reproduction ratio “100%” displayed and copier returning to normal standby
state
4. 2. 3. Cassette feed copying with [START] key ON
(1) [START] key ON
• “READY” display changed to “COPYING”
• Main charger, developer bias and discharge lamp turned ON/Each fan rotating at a high speed
• Drum, transfer belt, fuser unit and developer unit rotating
(2) Cassette paper feeding
• Feed motor and feed clutch turned ON
~ Pickup roller, feed roller and transport roller rotating
• Paper reaching transport roller
~ Cassette transport sensor turned ON
• Feed clutch turned OFF after a certain period of time
• Paper reaching registration roller
~ Registration sensor turned ON and aligning performed
• Feed motor stopping after a certain period of time
(3) Carriage operation
•
Exposure lamp turned ON
→
White shading compensation is carried out.
•
Scanning motor turned ON
→
Carriages 1 and 2 start to advance.
•
Copier entering toner supply operation with developer material toner density being lower than pre-set
value
(4) In a certain time after carriage operation:
•
Registration motor turned ON
→
Paper is sent to the transfer section.
•
Copies counted
(5) In a certain time after registration motor is turned ON:
• Transfer charger ON
(6) Carriage scanning termination
•
Scanning motor turned OFF
•
Exposure lamp turned OFF
•
Registration motor turned OFF (after paper trailing edge has passed registration sensor)
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