User`s manual

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6 INSPECTION AND MAINTENANCE
(2) Q172DEX module battery replacement procedure
When the battery has been exhausted, replace the battery with a new one in
accordance with the procedure shown below.
POINT
When replacing the battery, pay attention to the following.
(1) The Multiple CPU power supply must be on for 10 minutes or longer before
dismounting the battery.
(2) Encoder data in the memory are backed up for a while by a capacitor even
after the battery is removed. However, since data in the memory may be
erased if the time for replacement exceeds the backup time shown the
following guaranteed value, replace the battery quickly.
• Backup time by capacitor : 3 minutes
Front
Side of the Q172DEX
END
Replacing Battery
Encoder cable
Battery
(A6BAT/MR-BAT)
Connector
(BATTERY)
Turn on the Multiple CPU system power
supply for 10 minutes or longer.
Turn off the Multiple CPU system power
supply.
Remove the encoder cable from Q172DEX.
Remove the Q172DEX from the base unit.
Remove the old battery from its holder of
the Q172DEX.
Install the Q172DEX to the base unit.
Connect the encoder cable to the
Q172DEX.
MITSUBISHI
LITHIUM BATTERY
Install a new battery into the holder in the
correct direction. Connect the lead
connector to the connector (BATTERY).
Turn on the Multiple CPU system power
supply.