NWZ-S763, NWZ-S763BT, NWZ-S764, NWZ-S764BT, NWZ-S765 - Sony Audio Service Manual (repair manual). Page 24

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NWZ-S763/S763BT/S764/S764BT/S765
24
4-5-2.  Key check (KEY)
The operation of the key is confi rmed.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “OTHER”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “KEY”.
4.  Press the [
u
] key, all keys are displayed.
 
Screen display
OTHER KEY
                       UP             VOL+
REW        PLAY    FF    VOL–
                    DOWN     OPTION
HOLD                               BACK
BT
START
5.  The character corresponding to the key is selected every time 
the key is pressed. Confi rm the character colors other than 
“BT” changed.
6.  Slide the [HOLD] key from ON to OFF, return to minor item 
selection screen.
4-5-3.  Frequency check that presses key (KEYNUM)
The frequency to which the key is pressed, insert/pull out frequen-
cy of cradle and insert/pull out frequency of the headphone are 
displayed.
Note: Not used for the servicing.
4-5-4. Format (FORMAT)
The user’s area is formatted, and ICV for the video and ICV for 
audio are initialized. 
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)
The destination setting, language information, and sound pressure 
regulation information are written in the NAND fl ash memory.
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.
4-5-7.  Firmware version check (FWVER)
The fi rmware version is displayed.
Checking method:
1.  Enter the test mode.
2. Press 
the 
[
v
]/[
V
] keys to select the “OTHER” and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “FWVER”.
4.  Press the [
u
] key, the fi rmware version is displayed.
 
Screen display
OTHER FWVER
X.XX.XX
MODEL NAME
NWZ-####
SERIAL NO
@@@@@@@
BT MAC ADR
$$-$$-$$-$$-$$-$$
    X.XX.XX 
: Firmware version
    #### 
: Model name
    @@@@@@@ 
: Serial No.
    $$-$$-$$-$$-$$-$$ 
: Bluetooth MAC address
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 
[
v
]/[
V
] keys to select the “OTHER”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “NCAPCHK”.
4. Press 
the 
[
u
] key, capacity of NAND fl ash memory, present 
bad block, maximum bad block, and vender ID are displayed.
 
Screen display
OTHER NCAPCHK
X GB
BADBLOCK
CUR (####)/MAX (@@@@)
VENDOR (XXXXXXXX)
$$$$
    X 
:  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.
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