Ricoh Aficio MP 1600L2, Field Service Manual

Page: 187 / 264

No.
Definition
Symptom Possible Cause
590 B
Left exhaust fan motor error
The CPU detects an exhaust fan
lock signal for more than 5
seconds.
• Loose connection of the exhaust fan motor
• Too much load on the motor drive
591 B
Rear exhaust fan motor error
The CPU detects an exhaust fan
lock signal for more than 5
seconds.
• Loose connection of the exhaust fan motor
• Too much load on the motor drive
620 B
Communication error between BICU and ADF
The BICU does not receive a
response from the ADF main board
for 4 seconds or more.
The BICU receives a break signal
from the ADF main board.
• Poor connection between the BICU and
ADF main board (DF connector)
• ADF main board defective
• BICU defective
621 B
ADF connection error
An incorrect ADF (an ADF for some
other copier) is detected. (for Basic
and GDI machines)
An ADF (including the correct ADF)
is installed while the copier is in the
energy saver mode. (for GDI
machine only)
• ADF incorrect (The ADF for B039/B040/
B043 or B121/B122/B123 is installed on
a B244/B268/B269/B276/B277.)
• The connector of the ADF is removed while
the machine is in the energy saver mode.
632 C
Accounting error 1
An error is detected during the
communication with the MF
accounting device.
• Accounting device defective
• Loose connection
633 C
Accounting error 2
After communication is established
with the MF accounting device, a
brake signal is issued.
• Accounting device defective
• Loose connection
Service Call Conditions
185
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