Backup Battery; Battery Replacement Procedure - Panasonic NV-DV2000 Service Manual

2.5.1. Backup Battery B7901
This VTR equipped with the Backup Battery (B7901) to backup the following memorized data in the Timer
microprocessor (IC7501).
1. Setting condition of "VCR Functions"
OSD(AUTO/ON/OFF)
VCR display(ON/OFF/DIMMED)
Colour Mode(COLOUR/ B/W)
Comb filter (ON/OFF)
E-TBC (ON/OFF)
REC-DNR (LEVEL1/LEVEL2)
PB-DNR (LEVEL1/LEVEL2)
Remote (VCR1/VCR2/VCR3)
2. Setting condition of "Edit Functions"
Search with Sound (OFF/EDIT ONLY/ALWAYS ON)
Audio Mode(12bit/16bit)
One-Touch-Edit(OFF/ON)
Still Album(3-20seconds adjustable)
3. Clock& Date data
4. Self-Diagnosed Result Record (3 records)
2.5.2. Replacement Procedure
1. Remove the Top Panel and Mechanism unit with DIGITAL C.B.A.(VEP03F39A).(Refer to Disassembly Procedures).
2. Unsolder the Lithium Battery;B7901"CR2354-1GUF" and then replace it into new
CAUTION:
The lithium battery is a critical component (Type No.: CR2354-1GUF Manufactured by Panasonic.) / It must never be
subjected to excessive heat or discharge. / It must therefore only be fitted in equipment designed specifically for its use. /
Replacementbatteries must be of the same type and manufacture. / They must be fitted in the same manner and location
as the original battery, with the correct polarity contacts observed. / Do not attempt to re-charge the old battery or re-use it
for any otherpurpose. / It should be disposed of in waste products destined for burial rather than incineration.
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one.(SeeFig.
Fig. B1
B1)