Read Sharp AM-400 (serv.man5) Service Manual online
AM-400DE
5 – 26
[8] Troubleshooting
1. Printer error code
2. Scanner message
PAPER JAM
The roller sensor could not detect its home position
after driving the pick up motor for the specified period.
SYSTEM ERROR [P2]
The printer controller detected the optical unit (LSU)
error.
SYSTEM ERROR [P3]
Thermistor error was detected.
SYSTEM ERROR [P4]
ROM or RAM error was detected on the printer
control unit.
SYSTEM ERROR [P5]
High temperature error was detected.
SYSTEM ERROR [P6]
Low temperature error was detected.
SYSTEM ERROR [P7]
Communication error between the main controller
and the printer controller was detected.
The roller sensor could not become NOT-Active after
passing the specified period from picking up paper.
The external interrupt signal for optical unit (LSU) or
High-voltage control did not become active after
passing the specified period.
CHK SCANNER LOCK
The scanner unit could not detect change point of
home postion. (ON -> OFF or OFF -> ON)
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