Sony NW-ZX300 Service Manual page 41

4-2-18. ULP Check (ULP Check)
It can be output the "Output path ULP" audio signal for ULP check.
Procedure:
1. Enter the test mode.
(Refer to "1. SETTING THE TEST MODE" on page 35)
2. Press the [+]/[–] keys to select the "Audio", and press the [
or [ ] key to enter the minor item.
>
3. Press the [+]/[–] keys to select the "ULP check".
4. Press the [ ] key, the audio signal output screen is displayed.
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Screen display
Audio ULP
(AUD ULPP command)
sampling [ 44100]
bit rate [16]
freq(R) [ 100]
freq(L) [ 100]
play time [10]
output [SE(ULP)]
volume [ 90]
>>> -------
Key input settings under this mode running:
[+]/[–] : Selection of each item
[ ]/[ ] : Setting change of the selected item
. >
[ ] : Audio signal output/stop
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Each item:
sampling : Sampling rate switching (44100/48000/96000)
bit rate : Bit rate switching (16/32)
freq (R) : Frequency switching (100/1000)
freq (L) : Frequency switching (100/1000)
play time : Play time up/down (0 to 60)
output : Output switching
(SE (ULP) (headphone)/LO (ULP) (line out)/
BTL (ULP) (balanced))
volume : Volume up/down (0 to 120)
5. Press the [ ] key, and output an audio signal using the set-
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tings selected.
Note 1: The screen turns off during ULP playback.
Note 2: If connect/disconnect the USB during the test, ULP playback pos-
sible to fail.
Note 3: If Bluetooth is enabled, ULP playback will fail. Do not perform
the "4-7. Bluetooth safety test" and "4-8. Bluetooth test tools".
If performed "4-7. Bluetooth safety test" and "4-8. Bluetooth test
tools", refer to "4-17-2. Reboot (test mode release)" and exit test
mode and start again from the beginning.
6. When the set playback time has elapsed, the result is display.
Screen display
Audio ULP
(AUD ULPP command)
sampling [ 44100]
bit rate
freq(R) [
freq(L) [
play time
output [SE(ULP)]
volume
>>> SUCCESS
7. Slide the [HOLD] switch in the direction of on, to return to
minor item selection screen.
The format of the
audio signal output
Item of key input settings
[16]
100]
100]
[10]
[ 90]
"SUCCESS"
or
"FAILURE"
4-3. Video (Video)
]
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4-3-1. LCD panel check (LCD panel check)
It can be check the LCD screen display.
Procedure:
1. Enter the test mode.
(Refer to "1. SETTING THE TEST MODE" on page 35)
2. Press the [+]/[–] keys to select the "Video", and press the [
or [ ] key to enter the minor item.
>
3. Press the [+]/[–] keys to select the "LCD panel check".
4. Press the [ ] key, the color bar screen is displayed.
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5. In step 4 state, each time the [
display changes in the following order.
Color bar (default) t All black t All red t All green t
All blue t All white t Maximum drawing size confi rmation
t diagonal gradation (red) t diagonal gradation (green) t
diagonal gradation (blue) t diagonal gradation (white) t
Color bar ...
Maximum drawing size confi rmation:
All blue (All sides are red) is displayed. Whether red in all
sides is seen is confi rmed.
6. In step 5 state, each time the [
brightness changes in the following order.
brightness 120 (default) y brightness 180 y brightness 240
y brightness 1 y brightness 60 y brightness 120 ...
7. Slide the [HOLD] switch in the direction of on, to return to
minor item selection screen.
4-3-2. EGL test (Run egl_test)
Note: Not used for the servicing.
4-3-3. Arbitrary picture display (Show picture)
Note: Not used for the servicing.
NW-ZX300/ZX300A
Screen display
Diagnosis APP
[ver X.XX.XX]
Video
LCD panel check
Run egl_test
Show picture
] key is pressed, the screen
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]/[ ] key is pressed, LCD
. >
]
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