Mitsubishi Electric MELDAS 600M Series Instruction Manual page 440

(3) Operation section-related problems
None of the key input works.
The F050 cable connecting
the operation section key
switches and control
section is loose.
There is a circuit
abnormality in the HR111
Card.
(4) HDD-related problems
The message "Non System Disk Error"appears in the screen when the system is started.
The connector for the HDD
connection is loose.
When the FDD is
connected, a disk besides
the system disk is loaded in
it.
The machine is warming-up
for low temperature
protection when the
HEAT-UP LAMP on the
operation section is lit.
When the problem does not
correspond to any of the
above.
(5) Problems when the system starts
The NC does not start correctly.
The 7-segment NCLD1
display of the HR111 Card
displays "8".
The 7-segment NCLD1
display of the HR111 Card
displays "E" or "F".
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Cause
Cause
Cause
CAUTION
Do not apply voltages on the connector other than those indicated in this manual. Doing so
may lead to destruction or damage.
Incorrect connections may damage the devices, so connect the cables to the specified
connectors.
Do not connect or disconnect the connection cables between each unit while the power is ON.
Do not connect or disconnect any PCB while the power is ON.
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CHAPTER 3 MAINTENANCE
8. Fault Diagnosis and Action
Check the F050 cable connection.
Contact the nearest service center.
Check the connection state of the HDD F140 cable.
Eject the disk from the FDD, and restart.
Standby until the HDD warmup is completed.
Contact the nearest service center.
Check that the NCSYS rotary switch is set to "0".
Contact the nearest service center.
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Remedy
Remedy
Remedy