Sony NW-ZX300 Service Manual page 43

4-11. Touch panel (Touch screen)
Screen display
Diagnosis APP
[ver X.XX.XX]
Touch screen
Manual check
Cross check
Tap check
Device version
4-11-1. Manual check (Manual check)
It can be displayed the pink points of the touch locus of touch
panel, and check the information of the touch panel.
Procedure:
1. Enter the test mode.
(Refer to "1. SETTING THE TEST MODE" on page 35)
2. Press the [+]/[–] keys to select the "Touch screen", and press
the [ ] or [ ] key to enter the minor item.
u >
3. Press the [+]/[–] keys to select the "Manual check".
4. Press the [ ] key, the touch screen operation check screen is
u
displayed.
Screen display
manual touch test
touch-x :
width-x :
press: 0
released
5. When touch the screen, it is touch locus is displayed in pink
point and each value of touch information is displayed.
Coordinate values
manual touch test
Pressure values
Note: The values does not
change from "0".
Status
"released"
or
"pressed"
6. Press the [ ] key, and erase the touch locus.
.
7. Slide the [HOLD] switch in the direction of on, to return to
minor item selection screen.
0 y: 0
0 y: 0
Screen display
touch-x : 293 y: 646
width-x : 64 y: 76
press: 0
pressed
Touch locus
(pink)
4-11-2. Cross check (Cross check)
It can be displayed the black line of touch locus of touch panel, and
change the line dot.
Note: It can not operate in a state in which the WALKMAN main unit was
MSC connection.
Procedure:
1. Enter the test mode.
(Refer to "1. SETTING THE TEST MODE" on page 35)
2. Press the [+]/[–] keys to select the "Touch screen", and press
the [ ] or [ ] key to enter the minor item.
u >
3. Press the [+]/[–] keys to select the "Cross check".
4. Press the [ ] key, the all white screen is displayed.
u
5. When touch the screen, it is touch locus is displayed in black
line.
Screen display
6. In step 5 state, each time the [+]/[–] keys are pressed, the size
(dot) of the line is changed.
(1 y 3 y 5 y 7 y 9 y 11 (default) y 13 y 15 y
17 dot)
7. Press the [ ] key, and erase the touch locus.
.
8. Slide the [HOLD] switch in the direction of on, to return to
minor item selection screen.
4-11-3. Tap check (Tap check)
Note: Not used for the servicing.
4-11-4. Touch panel version check (Device version)
Note: Not used for the servicing.
NW-ZX300/ZX300A
Touch locus
(black)
43