Sony NWZ-S754 Service Manual page 24

NWZ-S754/S755
4-5-2. Key check (KEY)
The operation of the key is confi rmed.
Checking method:
1. Enter the test mode.
2. Press the [ ]/[ ] keys to select the "OTHER", and press the
v V
[ ] key to enter the minor item.
B
3. Press the [ ]/[ ] keys to select the "KEY".
v V
4. Press the [ ] key, all keys are displayed.
u
Screen display
OTHER KEY
UP
REW PLAY FF VOL–
DOWN OPTION
HOLD
START
5. The character corresponding to the key is selected every time
the key is pressed. "OK" is displayed if all keys are pressed.
6. Slide the [HOLD] key from ON to OFF, return to minor item
selection screen.
4-5-3. Frequency check that presses key (KEYNUM)
Note: Not used for the servicing.
4-5-4. Format (FORMAT)
Note: Not used for the servicing.
Format the set from "Settings" → "Common settings" → "Reset/
Format" → "Format" when it home menu in usually operates when
the set should format it.
4-5-5. Destination setting (DEST)
Note: Not used for the servicing.
4-5-6. Sound pressure regulation setting (SPSET)
ON/OFF of sound pressure regulation is confi rmed.
Note: Not used for the servicing.
24
VOL+
BACK
4-5-7. Firmware version check (FWVER)
The fi rmware version is displayed.
Checking method:
1. Enter the test mode.
2. Press the [ ]/[ ] keys to select the "OTHER" and press the
v V
[ ] key to enter the minor item.
B
3. Press the [ ]/[ ] keys to select the "FWVER".
v V
4. Press the [ ] key, the fi rmware version is displayed.
u
Screen display
OTHER FWVER
X.XX.XX
MODEL NAME
NWZ-####
SERIAL NO
@@@@@@@
X.XX.XX
####
@@@@@@@
5. Press the [BACK] key, return to minor item selection screen.
4-5-8. NAND capacity check (NCAPCHK)
Capacity of NAND fl ash memory, present bad block, maximum
bad block, and vender ID are displayed.
Checking method:
1. Enter the test mode.
2. Press the [ ]/[ ] keys to select the "OTHER", and press the
v V
[ ] key to enter the minor item.
B
3. Press the [ ]/[ ] keys to select the "NCAPCHK".
v V
4. Press the [ ] key, capacity of NAND fl ash memory, present
u
bad block, maximum bad block, and vender ID are displayed.
Screen display
OTHER NCAPCHK
XX GB
BADBLOCK
CUR (####)/MAX (@@@@)
VENDOR (XXXXXXXX)
$$$$
XX : Capacity of NAND fl ash memory
@@@@ : Number of present bad block
(It makes an error the acquisition of the number of
bad blocks at "–1")
#### : Number of maximum bud block
(It makes an error the acquisition of the vender ID
at "–1")
$$$$ : Vender of NAND fl ash memory
5. Press the [BACK] key, return to minor item selection screen.
: Firmware version
: Model name
: Serial No.