Unico SQ Series - Upgrade Firmware

Maintenance
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2. There is a round lithium battery on the main CPU PCB. Shown in Figure
7.11where the red arrow is pointed. The battery model is CR1220 with 3V
voltage from Panasonic.
Figure 7. 11 Battery Position
Note: Since the capacitor will only be able to maintain power for 5-6
minutes, we suggest you follow the procedure.
1) With the power unplugged, remove the bottom cover.
2) Locate the battery to be replaced on the board. DO NOT REMOVE IT
YET.
3) Make sure you have the replacement battery ready.
4) Turn on the spectrophotometer and keep it on for a few minutes.
5) Turn off the spectrophotometer.
6) Immediately after turning off the spectrophotometer, remove the old
battery and insert the new one. This MUST be completed within 3
minutes of the spectrophotometer being turned off.
Note: Failure to follow the correct battery replacement procedure may
result in saved data being lost and a possible PC software
communication problem. It is recommended to transfer the data
saved in the memory to computer with PC download software
before replace battery.
3. Replace the bottom cover on the spectrophotometer, ensuring that all the star
washers are in position.
7.5 Upgrade Firmware
1. Turn round spectrophotometer to find the switch shown in Figure 7.12 on the