20 February, 2001 SERVICE CALL CONDITIONS
4-7
Trouble-
shooting
No.
Definition
Symptom Possible Cause
IMB non-connected error925 B
IMB is not connected. This SC only
appears with B040 and B043 version
machines.
• IMB is not connected
• Poor connection between BiCU and
IMB
• IMB defective
• BiCU defective
Memory capacity error926 B
The machine detects a discrepancy
between the memory capacity detected
during the memory check at power on
and the check at recovery from low
power or night/off mode.
• Poor connection between optional
DRAM and IMB
• Optional DRAM defective
• IMB defective
• BiCU defective
NVRAM error981 B
The machine detects a discrepancy in
the NVRAM write/read data when
attempting to save actual data to the
NVRAM (i.e. during actual use).
• NVRAM defective
• Poor connection between BiCU and
NVRAM
• NVRAM is not connected
• BiCU defective
Communication error between BICU and IOB990 B
The BiCU board cannot communicate
with the IOB.
• The connection between the BiCU
board and the IOB is poor.
• BiCU board defective
• IOB defective
Program version error999 B
An incorrect type of main software was
downloaded.
• The main software for another
machine was downloaded to this
machine. Switch the machine off.
Connect an IC card that has the
correct firmware to the machine.
Switch the machine on, and download
the firmware (see section 5.1.9).
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