ICD-PX440 (serv.man2) - Sony Audio Service Manual (repair manual). Page 16

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ICD-PX440
16
4-10. BATT 
A/D
A/D value (voltage value and temperature value state) acquisition 
can be performed.
Procedure:
1.  Enter the test mode.
 
(Refer to “SETTING THE TEST MODE” on page 12)
2.  Press the [
>
] or [
.
] keys to select the “BATT A/D”, and 
press the [
N
] key.
3.  A/D value (voltage value and temperature value state) are ac-
quired, and they are displayed.
 
(8 bit (The bit shift after LSB side 2 bit omission))
 
Displayed values are always updated.
 
(Displayed characters/values in the following fi gure are ex-
ample)
AC:7B 2AC:8A
BC:7B 4BC:8A
TEMP:8C
<BATT A/D>
LCD Display
Releasing method:
Press the [STOP/
x
] key, return to test mode menu.
4-11. ZLOAD
Not used for the servicing.
4-12. LOW 
DET
Not used for the servicing.
4-13. VBUS
VBUS detection signal can be checked.
Procedure:
1.  Enter the test mode.
 
(Refer to “SETTING THE TEST MODE” on page 12)
2.  Press the [
>
] or [
.
] keys to select the “VBUS”, and press 
the [
N
] key.
3.  The state of VBUS_XDET is displayed.
 
(Displayed characters/values in the following fi gure are ex-
ample)
OFF
<VBUS>
LCD Display
 OFF 
VBUS_XDET=1 
(H)
 ON 
VBUS_XDET=0 
(L)
 
Key input settings under this mode of operation:
 
[
N
] : It shifts to the suspension state.
Releasing method:
Press the [STOP/
x
] key, return to test mode menu.
Remove battery, in order to be released from the suspension state.
4-14. FM 
TEST
Not used for the this unit.
4-15. KEY 
COUNT
The count value of the keys and switches operation can be dis-
played. However, distinction of kind of the keys and switches 
which operated is not performed.
Only the key pressed fi rst is counted.
Note: It cannot move to other modes from this mode.
Procedure:
1.  Enter the test mode.
 
(Refer to “SETTING THE TEST MODE” on page 12)
2.  Press the [
>
] or [
.
] keys to select the “KEY COUNT”, 
and press the [
N
] key.
3.  The count value of the keys and switches operation is dis-
played.
 
(Displayed characters/values in the following fi gure are ex-
ample)
KEY:PLAY
00888
<KEY COUNT>
LCD Display
The key name of
the pressed first
 
Count value increase conditions:
 
One of keys is pressed.
 
One of switches is slid.
 
Memory card is inserted.
 
Headphone or microphone is inserted.
 
Initial value:
 
Count number : 00000 (Maximum is 99999)
 
If the key is pressed in the state of 99999, it will return to 
00000.
Releasing method:
Remove battery.
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