ICD-UX502 - Sony Audio Service Manual (repair manual). Page 16

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ICD-UX502
16
4-10. ZLOAD
The battery load check can be operated compulsorily.
Procedure:
1.  Enter the test mode.
2. Press the [
>
] or [
.
] keys to select the “ZLOAD”, and 
press the [
N
/ENTER] key.
3.  ON/OFF of ZLOAD is changed.
 
(Displayed characters/values in the following fi gure are ex-
ample)
<ZLOAD>
ZLOAD : OFF
LCD Display
 
Key input settings under this mode of operation:
 
[
>
] or [
.
]  : ZLOAD_CTL change (H ↔ L)
Releasing method:
Press the [STOP/
x
] key, return to test mode menu.
4-11. LOW 
DET
LOWBATT_XDET (Battery voltage decrease detection signal) 
can be checked.
Procedure:
1.  Enter the test mode.
2.  Press the [
>
] or [
.
] keys to select the “LOW DET”, and 
press the [
N
/ENTER] key.
3.  The state of LOW DET is displayed.
 
(Displayed characters/values in the following fi gure are ex-
ample)
<LOW DET>
LOW DET: OFF
LCD Display
 
OFF : LOWBATT_XDET=1 (H)
 
ON  : LOWBATT_XDET=0 (L)
Releasing method:
Press the [STOP/
x
] key, return to test mode menu.
4-12. VBUS
VBUS detection signal can be checked.
Procedure:
1.  Enter the test mode.
2.  Press the [
>
] or [
.
] keys to select the “VBUS”, and press 
the [
N
/ENTER] key.
3.  The state of VBUS_XDET is displayed.
 
(Displayed characters/values in the following fi gure are ex-
ample)
<VBUS>
OFF
LCD Display
 OFF 
VBUS_XDET=1 
(H)
 ON 
VBUS_XDET=0 
(L)
 
Key input settings under this mode of operation:
 
[
N
/ENTER]  : It shifts to the suspension state.
 
 
  Remove battery, in order to be released from 
 
 
  the suspension state.
Releasing method:
Press the [STOP/
x
] key, return to test mode menu.
4-13. 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.
Note: It cannot move to other modes from this mode.
Procedure:
1.  Enter the test mode.
2.  Press the [
>
] or [
.
] keys to select the “KEY COUNT”, 
and press the [
N
/ENTER] 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 COUNT>
00888
LCD Display
 
Count value increase conditions:
 
One of buttons is pushed.
 
One of switches is slid.
 
Headphone or microphone is inserted.
Releasing method:
Remove battery.
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