ICD-PX820, ICD-PX820D, ICD-PX820M - Sony Audio Service Manual (repair manual). Page 8

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ICD-PX820/PX820D/PX820M
8
5-5. Batt AD, DCIN
The current AD value (hexadecimal) of BATT_AD is indicated 
and whether DCIN is present or not is displayed. When DCIN is 
present, BATT_AD is not read. (
>
 displayed)
ON
BATT_AD AD value
DPC
:8RTT :OC
DPC
:8RTT :OC
DCIN with/without information
ENTER
x
FF
m H
m H
To exit from this test mode, get back to the menu screen by press-
ing [
x
] button.
5-6. RTC Test
One second update interrupt is set for the RTC. When an interrupt 
occurs, “OK” is displayed. If no interrupt occurs after an elapse of 
three seconds, “NG” is displayed.
“OK”
OK
DPC
RTC
DPC
RTC
“NG”
NG
DPC
RTC
ENTER
x
m H
m H
m H
To exit from this test mode, get back to the menu screen by press-
ing [
x
] button.
5-7. Battery Life
This mode provides only the display mode designed to indicate the 
previous measurement results.
Only this mode provides the measurement mode to record and play 
back automatically until the low battery is reached and to write a 
log at the end of operation.
• Display Mode
The mode of operation (record and playback), the recording mode, 
and the date (year, month and day) and time of start and end of 
operation are indicated on the display screen.
To exit from this test mode, get back to the menu screen by press-
ing the [
x
] button.
5-8. USB Test
“USB test” is a VBUS mode to check whether VBUS is present 
or not.
• VBUS Mode
If voltage is supplied to the VBUS upon entry into the mode. 
“VBUS ON” is displayed. If not, “VBUS OFF” is displayed.
When the VBUS is withdrawn in the VBUS present state, “VBUS 
OFF” is displayed. If the VBUS is supplied in this condition, 
“VBUS ON” is displayed.
US:8
DPC
VBUS with
VBUS without
OFF
DPC
V BUS
ON
DPC
V BUS
ENTER
x
m H
m H
m H
To exit from this test mode, get back to the menu screen by press-
ing the [
x
] button.
:BATLIFE
DPC
End
DTC
123456
ST
DTC
080101
ENTER
x
m H
m H
m H
Y
M
D
H
M
S
REC
REC
REC
mode
days
start
PLAY
end
times
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