Mitsubishi Q01CPU User Manual page 319

11
MAINTENANCE AND INSPECTION
(2) Procedures for replacing battery of Q3MEM-4MBS or Q3MEM-8MBS
Backup the program and the
data.
Remove a memory card
protective cover of the CPU
module at power-on status of
the programmable controller.
With a flat-blade screwdriver, etc.,
remove the battery holder locking
switch from the LOCK position.
Remove the battery holder from
the SRAM card.
Remove the old battery from its
holder.
Insert a new battery into the
holder in the correct direction.
Deeply insert the SRAM card
into the battery holder.
Set a battery holder fixing switch
to the LOCK position
Set the memory card protective
cover on the CPU module.
SD52 to check if bit 1 and bit
Failure of SRAM card battery
Replacing battery
Monitor
OFF
SM52 to verify on/off.
ON
Monitor
Bit 1 and bit 2 are OFF.
2 are ON.
Bit 1 and bit 2 are ON.
Diagram 11.8 SRAM card CPU module battery replacement procedure
11.3.5 SRAM card CPU module battery replacement procedure
CPU module
main unit
CPU module
main unit
Battery holder
fixing switch
CPU module
main unit
Battery holder
fixing switch
11.3 Battery Life and Replacement Procedure
Remove a caver,
pressing fixing claws
of top/bottom
Battery holder
Release
direction
Facing "+ (positive)"
up, install the battery
LOCK
Completed
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