Mitsubishi Electric QS001CPU User Manual page 126

12
TROUBLESHOOTING
12
- 19 12.2 Troubleshooting Flowchart
12.2.12 Flowchart for when the CPU cannot communicate with the GX Developer
(From previous page)
How is the "POWER" LED
of the power supply module?
On
Is the CPU module
RESET/STOP/RUN switch in
the neutral position?
Other than RESET position
Replace the power supply module and
confirm that the "POWER" LED is on.
Can the CPU communicate
with the GX Developer?
NO
Hardware failure of the following modules
1) CPU module
2) Base unit
3) Intelligent function module (if mounted)
Execute operation check sequentially from the
minimum system.
For the module that does not operate, please consult
your local Mitsubishi representative, explaining a
detailed description of the problem.
Section 12.2.3
Off
the "POWER" LED turns off.
RESET position
Cancel the RESET.
NO
Can the CPU communicate
with the GX Developer?
YES
Hardware fault of power supply module.
Flowchart for when
YES
Completed