Read Sharp AR-810 (serv.man24) Service Manual online
AR-651/810 GENERAL OPERATIONS 4 - 1
4. GENERAL OPERATIONS
4. 1. Overview of Operation
Copier operation
Operation during warming-up, pre-running and standby
Automatic feed copying by pressing [START] key
Copying operation
Bypass copying
Interrupt copying
4. 2. Operation
4. 2. 1. Warming-up
(1) Initialization
• Power turned ON
• IH coil turned ON
• Set number “1” and “WAIT WARMING UP” displayed
• Fan motors turned ON
• Scanning section initialization
~ Carriage moving to home position and stopping there
~ Carriage moving to peak detection position
~ Exposure lamp turned ON ~ Peak detection (White color is detected by the shading correction plate.)
~ Exposure lamp turned OFF
~ Carriage moving to home position
• Feed unit initialization
~ Each cassette tray going up
• Writing section initialization
~ Polygonal motor rotating
~ Beam position controlled
• Other
~ Main charger cleaner operating
(2) Pre-running operation
Pre-running operation is started when the temperature of the fuser roller reaches a certain temperature.
(Pre-running is not carried out when the fuser roller has been already hot enough.)
• Fuser roller rotating
• Drum rotating
~ Drum motor, used toner transport motor turned ON
• Image quality control
~ Patch formed on drum and its reflective ratio read out to set an optimal condition.
(3) When fuser roller temperature becomes sufficient for fusing:
• IH coil turned OFF
• Set number “1” and “READY” displayed
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