Service Call Conditions
D158/D159/D160/D161/D170 5-98 SM
SC9xx: Miscellaneous
No.
Definition
Symptom Possible Cause
901 B
Mechanical total counter
The mechanical total counter
does not work properly.
Defective total counter
Loose connection
Defective IOB
903 B
Engine total counter error (D160/D161/D170)
The checksum of the total
counter is not correct.
NVRAM on the BICU
928 B
Memory error (D160/D161/D170)
The machine detects a
discrepancy in the write/read
data during its write/read test
(done at power off/on and at
recovery from low power or
night/off mode).
BICU
Poor connection between BICU and
memory
929 B
IMAC error (hardware) (D160/D161/D170)
Error register for IMAC is on,
while IMAC is operating.
Mechanical problem (e.g.
interlock does not turned off
when right door is open
and .bypass tray is used at
the same time.)
Defective BICU
Defective interlock switch
981 B
NV-RAM error (D160/D161/D170)
If the machine fails to read
the specific value written onto
the NV-RAM on program
startup, an SC code appears.
Defective NV-RAM
NV-RAM is not installed
Rev. 11/07/2013
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