Sony NW-ZX300 Service Manual page 44

NW-ZX300/ZX300A
4-12. Key (Key)
Screen display
Diagnosis APP
[ver X.XX.XX]
Press check
Press count check
Connection check
Connection status
4-12-1. Key press check (Press check)
It can be check the pressing of the each keys (buttons).
Procedure:
1. Enter the test mode.
(Refer to "1. SETTING THE TEST MODE" on page 35)
2. Press the [+]/[–] keys to select the "Key", and press the [
or [ ] key to enter the minor item.
>
3. Press the [+]/[–] keys to select the "Press check".
4. Press the [ ] key, all keys are displayed to the screen.
u
Screen display
Key push
(KEY PUSH command)
LEFT PLAY RIGHT
HOLD
5. The character in the screen corresponding to the pressed
key (button) is selected, every time the each key (button) of
WALKMAN main unit is pressed.
([ ], [+], [–], [ ], [ ], [
1 . u
direction of on)
6. When all of the keys are checked, "Key push OK" is displayed.
Screen display
Key push
(KEY PUSH command)
LEFT PLAY RIGHT
HOLD
Key push OK
7. Slide the [HOLD] switch from "on t off", return to minor
item selection screen.
44
Key
VOL+
VOL–
POWER
], Slide [HOLD] switch in the
>
VOL+
VOL–
POWER
4-12-2. Key press count check (Press count check)
Note: Not used for the servicing.
If you have entered this mode by mistake, press the [ u ] key in a
state in which slide the [HOLD] switch in the direction of on, return
to minor item selection screen.
4-12-3. Accessory connection count check
(Connection check)
Note: Not used for the servicing.
4-12-4. Headphone connection status
(Connection status)
Note: Not used for the servicing.
4-13. FM tuner (FM tuner)
Note: This major item is not used for the servicing.
4-14. SD card (SD card)
Note: This major item is not used for the servicing.
4-15. NVP (NVP)
Note: This major item is not used for the servicing.
]
u
4-16. Others (Others)
4-16-1. Real time clock check (RTC check)
It can be check the operation of an internal clock.
Procedure:
1. Enter the test mode.
(Refer to "1. SETTING THE TEST MODE" on page 35)
2. Press the [+]/[–] keys to select the "Others", and press the
[ ] or [ ] key to enter the minor item.
u >
3. Press the [+]/[–] keys to select the "RTC check".
4. Press the [ ] key, date and time are displayed.
u
5. If an internal clock check is fi nished, the "testing" of center of
screen is changed into "OK".
(Displayed characters/values in the following fi gure are ex-
ample)
RTC check
Clock information
6. Slide the [HOLD] switch in the direction of on, to return to
minor item selection screen.
Screen display
Diagnosis APP
[ver X.XX.XX]
Others
RTC check
Set destination
Sound pressure
Accessory-ID
FW version check
NAND check
Bundle HP check
Color variation
Sleep timer
Auto shutdown
EU Vol regulation
MSC control
Safety standard
Screen display
(OTR RTCC command)
date
Tue, Aug 01 2017
time
13:28:07.641628
"testing"
>>> testing
r
"OK"