NW-E10, NW-E7 - Sony Audio Service Manual (repair manual). Page 7

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7
NW-E7/E10
Ver 1.1  2002.01
Operational Procedure
1.  Readjustment of battery voltage threshold value Readjust the voltage with the following procedure.
(1) Start up the service tool (J-2507-037-1) test mode “appollo_service.exe” on the PC and connect the main block to the PC using the
USB cable. The following screen will be displayed.
At this time the remaining battery setting voltage threshold value written into the circuit board will be displayed on block 5.
(2) Provide the regulation setting voltage in table 5 from a DC regulated power supply to the battery terminal.
Next, when block 6 is clicked, the conversion value (threshold value) of the voltage value provided will be displayed.
Clicking block 7 in this condition will write a new conversion value (threshold value) to block 5’s “AD Level”.
(3) Provide the regulation setting voltage and write the conversion value (threshold value) for each step in table 1-5.
Capacity 1 
t2
1.25V
 368
Capacity 2 
t3
1.27V
 400
Capacity 3 
t4
1.29V
432
OFF
1.00V
320
Condition
Voltage set value
Converted value (ref.)
Table 1-5
Caution: The threshold value (the conversion value corresponding to the voltage value) will be different for each set.
Precautions:
1. Apply a voltage accuracy of within 
±
0.01V with minimum ripple for the voltage of DC regulated power supply.
2. Use a proofed (calibrated) measuring instrument to measure the voltage applied.
3. Do not apply solder directly on the battery terminal when applying voltage to the battery terminal. Use clips, etc.,
to connect to the battery terminal.
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