Service manual

SC Tables
D127/D128 6-28 SM
No.
Definition
Symptom Possible Cause/Countermeasure
839 USB NAND Flash ROM error
839
B
Serial Flash access error
[9001]
The result of reading and writing
in software status register of
Serial Flash, the device for
certification, came to an error.
 Defective Serial Flash
[9101] B
The ID of the USB NAND Flash
ROM cannot be read.
 Defective controller board
1. Replace the controller board.
[9110] B
The USB NAND Flash ROM is
disconnected.
840 B
EEPROM access error
While I/O operation to EEPROM
Three times retry is ineffective
after reading error
Writing error occurs.
 Defective EEPROM
841 B
EEPROM reading error
All of the data values being read
from three areas which are given
EEPROM mirroring, are different
from each other.
 Particular area in EEPROM has
been changed by some cause
842 D
Nand-Flash update VerifyError
SCS detected abnormal writing
(verifying Error) in the module
which is written in Nand-Flash on
the time of ROM remote update
or ROM update.
 Defective Nand-Flash