Backup Battery (Ni-Cad)
Some components on PCB’s are static sensitive. It is recommended
that static discharge precautions be observed when working in and
around the FoxJet controller and when handling FoxJet printed
circuit boards.
Rechargeable Ni-Cad batteries were installed on all CPU PCB’s
manufactured before November 1997. CPU PCB’s manufactured
after November 1997 will have lithium batteries.
Removal
1. Turn system power off.
2. Remove CPU PCB.
3. Unsolder three pins to BT1 on CPU PCB.
FoxJet cannot be held responsible for damage to boards occurring
from poor soldering techniques or faulty soldering equipment. Any
soldering on PCB’s performed outside of FoxJet’s Repair Facility will
void any and all warranties.
4. Carefully clean solder from holes.
Installation
1. Inspect battery for corrosion.
2. Position battery on board and solder in place.
3. Re-install CPU PCB and apply system power.
4. Measure battery voltage. Voltage should be 3.4 – 4.0 VDC.
Battery will recharge as long as power is applied to system.
8-8
Removal/Replacement Procedures
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