2RV/2RW/2RX/2RY/3RA-3
7-76
C0970: Power interruption detection
C1810: Paper feeder communication error (PF1)
Target: Paper feeder 1
No paper feeder is detected after the paper feeder installation is detected when turning the power on.
Step Check description Assumed cause Measures Reference
1 Checking the interlock
switch
The interlock switch does
not turn on.
Check if the interlock switch
turns on by opening/closing
the right cover. If not, reattach
the interlock switch.
2 Resetting the main power The main/engine PWB
does not correctly operate.
Turn off the power switch and
unplug the power cord. After
5s passes, reconnect the
power cord and turn on the
power switch.
3 Checking the connection The connector is not prop-
erly connected or the wire
is faulty.
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire.
• Low voltage PWB (YC103)
- Main/engine PWB (YC20)
4 Replacing the low voltage
PWB.
The low voltage PWB is
faulty.
Replace the low voltage
PWB.
5 Replacing the main/engine
PWB
The main/engine PWB is
faulty.
Replace the main/engine
PWB.
Step Check description Assumed cause Measures Reference
1 Reinstalling the paper
feeder
The drawer connector
between the main unit and
paper feeder 1 is not con-
nected properly.
Place the main unit on the
paper feeder 1 so that the
drawer connector is securely
connected.
2 Checking the connection The connector is not con-
nected properly or, the wire
or drawer connector is
faulty.
Check and clean the terminal
of the following wire connec-
tors or, repair and reconnect
the connectors. If there is no
continuity or the drawer con-
nector is faulty, replace the
wire.
• PF main PWB (YC5) -
Drawer connector
• Drawer connector - Main/
engine PWB (YC17)
3 Replacing the PF main
PWB
The PF main PWB is
faulty.
Replace the PF main PWB.
4 Replacing the main/engine
PWB
The main/engine PWB is
faulty.
Replace the main/engine
PWB.
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