Epson RC620 CU Manual page 183

6.4.1.2 BIOS Backup Battery (Normal)
 Lithium batteries contain flammable materials such as lithium, organic
CAUTION
BIOS (1) Remove the CPU board.
Backup Battery
(Normal)
Removal
(2) Remove the BIOS backup battery placed behind the CPU board.
NOTE

RC620 Rev.8
Maintenance 6. Maintenance Parts Replacement Procedures
solvents, etc. If misused, batteries may generate heat, explode or catch
fire. Observe the following precautions for safe use of lithium batteries.
- Be sure to use the battery supplied as the maintenance parts from
EPSON.
- Do not allow the positive (+) and negative (-) electrodes to short circuit
during maintenance.
- Do not discard batteries into fire or heat them to high temperature.
- Do not disassemble or alter batteries.
- Discarding batteries according to the regulations.
Refer to Maintenance: 6.4.1.1 CPU Board (Normal).
Front
Remove the BIOS backup battery while pressing the latch of battery holder in the
direction shown in the photo.
Battery holder 2. Remove
Latch
Back
1. Press
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