Ricoh C211 Service Manual page 635

4. Paper Feed Miss
< Phenomenon>
4-2. E-02 k displayed in the counter.
e Possible causes>
1.
The fuse (2.5 amp) [A] on the AC Drive
PCB is blown because of heavy
resistance to main motor rotation.
Therefore, when the Start key is press-
ed and the paper feed table rise signal
goes high, the paper feed table drive
motor does not rotate and E-02 is
displayed in the counter.
(factor for fuse break down)
a. The drum is locked due to a paper
jam.
b.The drum is locked because the
paper delivery pawl is stuck in the
master clamper.
c. The drum is locked because the op-
tional drum protection sheet, which
was not removed, is jammed in the
machine.
2. The fuse blows because the rear cover
pinches the harness from the AC Drive
PCB to the paper table drive motor. This
causes the polyvinyl tube to be broken
and from there the circuit is shorted to
ground.
(~ AC Drive PCB
Paper Table Drive Motor
/
l'; .
!
' Bare Wire
<Countermeasure >
1.
2.
Replace the fuse (2.5 amp) [A] on the AC
Drive PCB.
Remove the inhibiting factor that
caused the fuse to blow.
AC Drive PCB
[N
Cover the bare wire with polyvinyl
tape (electrical tape). To prevent the
harness from being pinched by the
rear cover, change the position of the
harness.
6-13
Rev. 8/89