Ricoh G147 Service Manual page 161

Lift motor connector or harness loose, broken, defective.
Lift motor defective
Height sensor connector or harness loose, broken, defective
Height sensor defective
Paper tray unit motor lock (optional
paper tray)
A main motor lock was detected for
506 B
more than 50 ms during rotation of
the motor in either the 3rd or 4th tray
of the optional paper feed unit.
LCT main motor lock
A main motor lock signal was
507 B
detected for more than 50 ms during
rotation if the LCT motor.
510 B LCT tray malfunction
One of the following has occurred:
1. The LCT lift sensor did not activate within 18 sec. after the LCT lift
motor turned on.
2. The LCT lower limit sensor did not activate within 18 sec. after the LCT
lift motor turned on.
3. The LCT lift sensor was already activated when the LCT lift motor
turned on.
4. After the paper end sensor was actuated while the tray was being
raised, the upper limit sensor did not actuate within 2.5 sec. In this
case, a message is displayed to remind the user to set the paper and
tray control halts. The display is reset by opening and closing the LCT
door.
5. This SC code is issued if problem "4" occurs 3 times.
SM
Paper tray unit main motor
connector or harness loose,
broken, defective
Motor overload due to an
obstruction
Motor defective
LCT main motor connector or
harness loose, broken, defective
Motor overload due to an
obstruction
LCT main motor defective
4-11 G147