SC 442 - 446 (01-02-03) Ricoh MPC 6502, 6503

SC446-01 D ITB: Lock: Encoder 1 error
SC446-02 D ITB: Lock: Encoder 2 error
SC446-03 D ITB: Lock: Encoder 1/2 error
SC446-04 D ITB: Lock: Hole error
SC446-05 D ITB: Lock: Overload error
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SC442-00 D ITB Lift Error
Even though the ITB lift motor rotates, the ITB lift sensor failed to detect the
specified sensor feeler status within specified time.
Details:
• During home-positioning (operation for fixing the separated status)
(separation movement)
The sensor failed to detect the transition from “feeler present” to
“feeler absent” (separation movement) within 2000 msec from the
start of ITB lift motor rotation.
• During normal contact/separation movement (printing/process
control/MUSIC/forced toner consumption)
Contact movement:
The sensor failed to detect the transition from “feeler absent” to
“feeler present” (contact) within 2000 msec from the start of ITB lift
motor rotation.
Separation movement:
The sensor failed to detect the transition from “feeler present” to
“feeler absent” (separation) within 2000 msec from the start of ITB
lift motor rotation.
SC No. Level Error Name/Error Condition/Major Cause/Solution
• During contact/separation movement under special conditions
(paper jam, paper end etc.)
Separation movement:
The sensor failed to detect the transition from “feeler present” to
“feeler absent” (separation) within 2000 msec from the start of ITB
lift motor rotation.
Detection timing: During contact/separation movement
Detection interval: 2msec or more
• Sensor smudged
• Motor/sensor defective
• Harness broken or problem with connection (such as a disconnected
connector)
• If smudged: cleaning
• If defective or broken: replacement
• Problem with connection: reconnection

[@HoangHuy-yp5ql]

good man