Sony NW-A25 / NW-A25HN / NW-A26HN / NW-A27HN Service Manual ▷ View online
NW-A25/A25HN/A26HN/A27HN
9
18. Press the [
v
]/[
V
] keys to select the “NC”, and press the [
B
] key
to enter the minor item.
MPTAPP (X.XX.XX.XX)
Screen display
POWER
AUDIO
VIDEO
OTHER
CLESTE
DIREC
BLUETOOTH
NFC
USB HOST
SD
FM
NC
NC
SHUTDOWN
EXITTEST
GAIN-L
GAIN-R
NCHPCHK
GAIN-R
NCHPCHK
19. Press the [
v
]/[
V
] keys to select the “GAIN-L”.
MPTAPP (X.XX.XX.XX)
Screen display
POWER
AUDIO
VIDEO
OTHER
CLESTE
DIREC
BLUETOOTH
NFC
USB HOST
SD
FM
NC
NC
SHUTDOWN
EXITTEST
GAIN-L
GAIN-R
NCHPCHK
GAIN-R
NCHPCHK
20. Press the [
u
] key, and confi rm that the NC parameter setting
value for L-ch is updated properly.
(Displayed values in the following fi gure are example)
NC GAIN-Lch
28
MODE
-1
Screen display
21. Press the [BACK] key, and press the [
v
]/[
V
] keys to select the
“GAIN-R”.
MPTAPP (X.XX.XX.XX)
Screen display
POWER
AUDIO
VIDEO
OTHER
CLESTE
DIREC
BLUETOOTH
NFC
USB HOST
SD
FM
NC
NC
SHUTDOWN
EXITTEST
GAIN-L
GAIN-R
NCHPCHK
GAIN-R
NCHPCHK
22. Press the [
u
] key, and confi rm that the NC parameter setting
value for R-ch is updated properly.
(Displayed values in the following fi gure are example)
NC GAIN-Rch
30
MODE
-1
Screen display
23. Press the [BACK] key twice, return to major item selection
screen.
24. Press the [
v
]/[
V
] keys to select the “EXITTEST”, and press
the [
u
] key to select the “SURE ?”.
MPTAPP (X.XX.XX.XX)
Screen display
POWER
AUDIO
VIDEO
OTHER
CLESTE
DIREC
BLUETOOTH
NFC
USB HOST
SD
FM
NC
NC
SHUTDOWN
EXITTEST
SURE?
25. Press the [
u
] key, turn the power off and release the test
mode.
NW-A25/A25HN/A26HN/A27HN
10
ABOUT THE REPAIRING OF BOARD
When the board installed by this unit is defective, replace the com-
plete mounted board. The individual mounted electrical parts can-
not replace and repair.
Moreover, the SW board cannot replace with single. If replace the
SW board, be sure to replace the MAIN board simultaneously.
The MAIN board can replace with single.
When the board installed by this unit is defective, replace the com-
plete mounted board. The individual mounted electrical parts can-
not replace and repair.
Moreover, the SW board cannot replace with single. If replace the
SW board, be sure to replace the MAIN board simultaneously.
The MAIN board can replace with single.
FORMATTING MEMORY
You can initialize your Walkman by formatting the memory.
1. From the Home menu, select
[Settings].
2. Select [Common Settings] - [Reset/Format] - [Format System Storage] or [Format SD Card] - [Yes].
3. Follow the on-screen instructions to format the memory.
Note
Be sure not to initialize (format) the memory of your Walkman using a computer. If you have formatted it with a
computer, format it again using the Walkman.
Formatting the memory erases all content data (songs, etc., including the sample data installed at the factory,
and the supplied software installer). Be sure to check the data stored in the memory and export any important
data to your computer before formatting.
computer, format it again using the Walkman.
Formatting the memory erases all content data (songs, etc., including the sample data installed at the factory,
and the supplied software installer). Be sure to check the data stored in the memory and export any important
data to your computer before formatting.
RESETTING TO THE FACTORY SETTINGS
Your Walkman can be reset to the default settings. Resetting the Walkman will not delete content such as music.
1. From the Home menu, select
[Settings].
2. Select [Common Settings] - [Reset/Format] - [Reset All Settings] - [Yes].
Note
If you reset your Walkman to the factory settings, the pairing information of the connected Bluetooth devices
will be deleted.
will be deleted.
COLOR VARIATION
Model
Destination
Color
(B)
Charcoal
Black
(S)
Silver
(L)
Viridian
Blue
(P)
Bordeaux
Pink
(R)
Cinnabar
Red
(Y)
Lime
Yellow
NW-A25
E (A25)
z
z
z
z
z
z
CH
z
z
z
z
z
z
NW-A25HN
CEW
z
–
z
z
z
z
EE
z
–
–
–
z
z
CH
z
z
z
z
z
z
NW-A26HN
E (A26HN)
z
z
z
z
z
z
EE
–
z
–
–
–
–
NW-A27HN
CEW
z
–
–
–
–
–
EE
z
–
–
–
–
–
CH
z
z
–
–
–
–
NW-A25/A25HN/A26HN/A27HN
11
SECTION 2
DISASSEMBLY
•
This set can be disassembled in the order shown below.
2-1. DISASSEMBLY FLOW
SET
2-2. CASE REAR BLOCK
(Page
(Page
12)
2-3. BUTTON VOL, PANEL FRONT ASSY
(Page
(Page
13)
2-5. SHORT-LAND
SOLDER
(Page
14)
2-7. SHEET (BOTTOM), SHEET (N)
(Page
(Page
15)
2-8. NFC
ANTENNA
(NFC1)
(Page
16)
2-9. BT-VOL FPC BOARD
(Page
(Page
17)
2-10. BT BOARD
(Page
(Page
18)
2-11. BATTERY ASSY (BAT1)
(Page
(Page
19)
2-12. LIQUID CRYSTAL DISPLAY PANEL (LCD1)
(Page
(Page
20)
2-13. MAIN BOARD BLOCK
(Page
(Page
21)
2-14. 5PIN HP ASSY (HPJ1), MAIN BOARD
(Page
(Page
22)
2-6. SW
BOARD
(Page
15)
2-4. CASE
REAR
ASSY
(Page
14)
JIG
When disassembling the unit, use the following jig.
Part No.
Description
9-913-402-33 TOOL FOR DISASSEMBLING
NW-A25/A25HN/A26HN/A27HN
12
Note: Follow the disassembly procedure in the numerical order given.
2-2. CASE REAR BLOCK
1
two screws
(M1.4)
knob hold
switch
Lid slot assy is floating.
(There is gap)
OK
Lid slot assy is flat.
(There is no gap)
NG
+RZWRFORVHWKHOLGVORWDVV\
4
claw
6
case rear block
4
claw
4
three claws
4
three claws
–
5HDUYLHZ–
bottom
top
2 Open the lid slot assy.
4
claw
4
three claws
4
claw
4
two claws
+RZWRLQVWDOOWKHFDVHUHDUEORFN
Note 2: When installing the case rear block,
while pulling the lid slot assy in the
direction of the arrow, align the switch
and knob hold.
knob hold
3 Insert the jig into the space and slowly
remove the case rear assy.
Note
1: When using a jig, please work carefully
so as not to damage the case rear assy
and panel front assy.
case rear assy
panel front assy
jig
5 Peel off the adhesive
sheet
FR.
+RZWRLQVWDOOWKHFDVHUHDUEORFN
Note 3: When installing the case rear block, be careful
not to pinch the adhesive sheet FR.
OK
NG
adhesive
sheet FR
sheet FR
lid slot assy
Click on the first or last page to see other NW-A25 / NW-A25HN / NW-A26HN / NW-A27HN service manuals if exist.