SV-SD750VGC, SV-SD750VGH, SV-SD750VGK, SV-SD750VGN, SV-SD750VSG - Panasonic Audio Service Manual (repair manual). Page 9

9

[ Content ]
Displays the rechargeable battery voltage, and the KEY IN volt-
age AD conversion values (hexadecimal) at the [FWD-Skip],
[REW-Skip], [MODE], [MARK], [+], [-] key operations.
The AD conversion value is used for button operation checks
and for the remaining battery capacity display.
[ Operating procedure ]

1. Select [ SERVICE 3 ] on the service mode menu and then

press the [PLAY/STOP] button, then displayed the battery
capacity display and control button operation check
screen.

2. Turn the power OFF to complete the procedure.

Check the BATT's AD conversion value and the remaining 
battery capacity display.
The BATT display (hexadecimal) indicates the voltage of the
internal rechargeable battery.
The internal rechargeable battery voltage =
2.9 (V) x [BATT display content] / 1024.
[Example]
When the BATT value is "1CC" ("460" as decimal value):
Internal rechargeable battery voltage = 2.9 x 460 / 1024 = 
1.3027....= 1.303 (V)

The value of BATT2: is not used in this mode. 

Displays the AD value judgment for the button operation.
Press each of the [FWD-Skip], [REW-Skip], [MODE], [MARK],
[+], [-] buttons and verify the changes in the KEYIN's AD 
conversion value.

If the AD conversion value displayed at the button operation
is outside the range shown in the table, this may indicate a
hardware malfunction.

Remaining Battery Voltage 

Display

AD Conversion Value

3 battery marks

1C3 < Batt

2 battery marks

1B3 < Batt < or = 1C3

1 battery mark

19B < Batt < or = 1B3

Blinking battery mark

172 < Batt < or = 19B

Low battery voltage

           Batt < or = 172

Button Operation

AD Conversion Value

FWD-Skip

000 ~ 055

REW-Skip

056 ~ 0FF

MARK

100 ~ 1AA

+

1AB ~ 255

-

256 ~ 2FF

MODE

300 ~ 3AA

No key input

3AB ~ 3FF