After 1 data frame is sent to the LCT, an
ACK signal is not received within 100
ms, and is not received after 3 retries.
• Serial line connection unstable
• External noise on the line
627 D
BICU/LCT communication/break reception error
During communication with the LCT,
the BICU received a break (Low) sig-
nal.
• Serial line connection unstable
• External noise on the line
SC650
NRS Modem Communication Error
One of the following factors could
be the cause of this error:
• Modem has been disconnec-
ted.
• Modem board disconnected.
Check the following for a machine that is using
Cumin (NRS modem):
• An error was returned during the dialup
connection
• A network was detected at startup
• At startup the machine detected that the
NIB was disabled, or did not detect a mo-
dem board
• For more details about this SC code, execute SP5990 to print an SMC report so you can read the
error code. The error code is not displayed on the operation panel. Here is a list of error codes:
Error Problem Solution
1 Failure to certify dial-up Check the dial-up user and dial-up password settings
4 Illegal modem setting Check the setting of SP5816 160 to determine whether the set-
ting for the AT command is correct. If this SP setting is correct,
then the problem is a bug in the software.
5 Poor connection due to
low power supply on the
line.
The problem is on the external power supply line, so there is no
corrective action on the machine.
11 Data in the NVRAM be-
came corrupted when the
network enable switch and
Cumin-M were enabled at
the same time.
Use SP5985 1 and set the NIC to "0" (Disable) to disable the
network board.
4. Troubleshooting
264
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