Ricoh D158 - Sc6 Xx: Device Communication

Service Call Conditions
D158/D159/D160/D161/D170 5-25 SM
Trouble-
shooting
SC6xx: Device Communication
No.
Definition
Symptom Possible Cause
620 B
Communication error between BICU and ADF
The BICU does not
receive a response from
the ARDF main board for
4 seconds or more.
The BICU receives a
break signal from the
ARDF main board.
 Poor connection between the
BICU and ARDF main board (DF
connector)
 ARDF main board
 BICU defective
621 B
ADF connection error (D160/D161/D170)
An incorrect ARDF is
detected.
An ARDF (including the
correct ARDF) is installed
while the copier is in the
energy saver mode.
 ARDF incorrect
 The connector of the ARDF is
installed while the machine is in
the energy saver mode.
622 B
Paper Bank communication error
An error occurs during
line connection.
A communication error
report is received from the
UART.

The paper bank's control board is
faulty.
 Defective BCU/IOB
 The paper bank's connection is
faulty.
632 B
Accounting error 1
An error is detected
during the communication
with the MF accounting
device.
 Accounting device
 Loose connection