Aficio MP1900, Service Manual

Page: 161 / 188

No.
Definition
Symptom Possible Cause
928 B
Memory error
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).
Memory defective
BICU defective
Poor connection between BICU and memory
929 B IMAC Hardware Error
981 B
NVRAM error
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
982 B
Localization error
The localization settings in the
nonvolatile ROM and RAM are
different (SP5807).
First machine start after the NVRAM is replaced
Incorrect localization setting
NVRAM defective
The download (program, print
data, language data) from the IC
card does not execute normally.
Board installed incorrectly
BICU board defective
IC card defective
NVRAM defective
Loss of power during downloading
Important Notes About SC999
Primarily intended for operating in the download
mode, logging is not performed with SC999.
If the machine loses power while downloading,
or if for some other reason the download does
not end normally, this could damage the BICU or
the PCB targeted for the download and prevent
subsequent downloading. If this problem occurs,
the damaged PCB must be replaced.
Service Call Conditions
27
3
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA