Replacing Nv-Ram And Memory Backup Battery - Sony PDW-HD1500 Maintenance Manual

1-9. Replacing NV-RAM and Memory Backup Battery

(1) Overview
This unit is provided with a batter backed RAM and EEPROMs on the boards.
These memory devices store system setup data, adjustment data, and other data.
When any of these devices or the backup battery is replaced, the memory data must be rewritten.
Board Ref. No.
HPR-23 IC2907
HPR-23 IC2701
SE-850 IC4
NET-4 IC1301
AU-311 IC912
VPR-99 IC801
PDW-HD1500/V1 (E)
Type Stored data
RAM SYSTEM SEL setting data of setup menu
(with backup battery) CLIP INFORMATION setting data
NUMERIC data of CLIP TITLE
Error log data
Watch information
EEPROM Hours meter data
H1: OPERATION
Serial number data
TC PRESET value
TIME ZONE data
Free-running frequency adjustment value
HD f0, SD f0
DC+12V adjustment value
Setup menu data
Menu bank 1-3 data
Menu backup data for SAVE MENU DATA in
MAINTENANCE MENU
EEPROM Adjustment value of DRIVE MAINTENANCE menu
Hours meter data
H2: LASER PARAMETER
H3: SEEK RUNNING
H4: SPINDLE RUNNING
H5: LOADING COUNTER
EEPROM Control data
EEPROM Analog input level adjustment value (ch1/ch2)
Analog line output level adjustment value (ch1/ch2)
Monitor output level adjustment value (Lch/Rch)
D/A converter Video adjustment data (59.94i/50i)
with built-in SDI ENC VCO data
EEPROM
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