Mitsubishi Q12PRHCPU - Page 307

8
TROUBLESHOOTING
8.1 Troubleshooting Flow
8.1.2 When the CPU Module "BACKUP" LED is ON (Red)
8 - 6
1
OVERVIEW
2
SYSTEM CONFIGURATION
3
TRACKING CABLE
4
PROCEDURE FOR STARTING UP A REDUNDANT SYSTEM
5
REDUNDANT SYSTEM FUNCTIONS
6
REDUNDANT SYSTEM NETWORKS
7
PROGRAMMING CAUTIONS
8
TROUBLESHOOTING
YES
NO
NO
Clear the control system CPU
module errors.( )
Is the "BACKUP"
LED lit up solid
green?
Replace standby system's CPU
module.( )
Clear the control system CPU
module errors.( )
Is the "BACKUP"
LED lit up solid
green?
YES
1)
2) 3)
Replace the tracking cable.
( )
YES
NO
Is the "BACKUP" LED
lit green?
Power off the standby system.
Disconnect and then reconnect the
tracking cable. ( )
Power on the standby system.
Reset the error of the control system
CPU module. (Refer to .)
Section 8.3.9
Section 3.3
Section 8.2
Section 8.2
Section 8.3.1
Section 8.2