Ricoh Aficio MP2550B Service Manual page 1096

Electrical Components
No. Error
6 Front side fence
motor error
7 Rear side fence
motor error
8 Feed-out belt motor
D372
Problem/Solution
not go OFF within the prescribed time.
During initialization, the positioning roller HP sensor
remained OFF did not go ON within the prescribed
time.
When the positioning roller arm is raised from the
down position, the HP sensor does not go ON even
after the positioning roller motor remained on for 450
pulses.
Solution:
Problem:
Occurs at power on, when the paper moves to the start
position in the finisher, or in standby mode.
The front side fence HP sensor did not switch from
ON to OFF after the front side fence motor remained
on for 50 pulses to move the fence toward the rear.
The front side fence HP sensor did not switch from
OFF to ON after the front side fence motor remained
on for 420 pulses.
Solution:
Problem:
Occurs at power on, when the paper moves to the start
position in the finisher, or in standby mode.
The rear side fence HP sensor did not switch from ON
to OFF after the rear side fence motor remained on
for 50 pulses to move the fence forward.
The front side fence HP sensor did not switch from
OFF to ON after the front side fence motor remained
on for 420 pulses to move the fence toward the rear.
Solution:
Problem:
Occurs at initialization or during feed-out belt operation.
The feed-out belt HP sensor did not switch from ON to
58 SM