DOWNLOAD Sony HT-NT3 Service Manual ↓ Size: 7.95 MB | Pages: 96 in PDF or view online for FREE

Model
HT-NT3
Pages
96
Size
7.95 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
ht-nt3.pdf
Date

Sony HT-NT3 Service Manual ▷ View online

HT-NT3
17
2-8.  SWITCHING  REGULATOR (3L405W),  AUDIO  IO  BOARD
‡:LUHVHWWLQJ
top side
‡:LUHVHWWLQJ
AUDIO IO board
acoustic tape
cushion, saranet
top side
AMP board
stopper, wiring
REGULATOR, SWITCHING 
(3L405W)
1
 CN101 
 (9P)
3
 stopper, wiring
4
 stopper, wiring
5
 REGULATOR,
SWITCHING
(3L405W)
8
  wire (flat type) 
 
(9 core) (CN705)
2
  four screws (+BVTP 3 x 8)
7
 cushion, saranet
6
 acoustic tape
9
  two screws (+BVTP 3 x 8)
0
  one screw (+BVTP 3 x 8)
qa
  AUDIO IO board
HT-NT3
18
2-9.  AMP  BOARD
‡:LUHVHWWLQJ
‡:LUHVHWWLQJ
top side
stopper, wiring
AMP board
top side
AMP board
stopper, wiring
4
 heat sink, AMP
 
Note: When you install the heat sink, AMP 
 
 
spread the compound referring to “NOTE 
 
 
OF REPLACING THE IC6001 ON THE 
 
 
AMP BOARD AND THE COMPLETE
 
 
AMP BOARD” on page 5.
qa
 stopper, wiring
0
 stopper, wiring
IC6001
qs
 AMP board
5
 CN6001 (5P)
6
 CN6002 (4P)
8
  wire (flat type) (24 core) (CN6004)
7
 CN6007 (4P)
2
  wire holder PWB
1
  one screw (+BVTP 3 x 8)
9
  four screws (+BVTP 3 x 8)
3
  two screws (+BVTP 3 x 10)
HT-NT3
19
2-10.  MB-1407  BOARD
A
A
3
 two screws (+BVTP 3 x 8)
4
 heat sink, MB
6
 shield, MB
2
 sheet, copper
1
 cushion tw-side
7
 three screws (+B 3 x 5)
8
 two screws (+B 3 x 5)
9
 MB-1407 board
5
 six screws (+BVTP 3 x 8)
(AEP, UK, RU, AUS)
(AEP, UK, RU, AUS)
(AEP, UK, RU, AUS)
• Abbreviation
 AUS  
Australian 
model
  RU 
 : Russian model
Ver. 1.1
HT-NT3
20
SECTION  3
TEST  MODE
COLD  RESET
The cold reset clears certain data in this system without initialize 
Personal Information and some operation data.
Execute this mode when returning the unit to the customers.
Procedure:
1.  Press the [
?/1
] button on the main unit to turn the power on.
2.  Press the [
?/1
] button and [VOL -] button on the main unit 
simultaneously for fi ve seconds.
3.  The message “WAIT” appears and then “RESET” appears on 
the fl uorescent indicator tube, then becomes standby states.
PANEL  TEST
Procedure:
1.  Press the [
?/1
] button on the main unit to turn the power on.
2.  Press button in order of the [
x
→ [DISPLAY] → [
m
→ [
M
]  
on the remote commander. 
 
(Make the interval when each button is pressed within two sec-
onds).
3.  All segments in fl uorescent indicator tube are lighted up and 
then is dimmed after a second.
4.  In the state of step 3, press the [INPUT +] button on the remote 
commander and “K 0” is displayed on the fl uorescent indicator 
tube.
5.  In the state of step 4, press the [VOL +] button on the remote 
commander and “SZ_A” is displayed on the fl uorescent indi-
cator tube.
6.  In the state of step 5, press the [VOL -] button on the remote 
commander and all segments in fl uorescent indicator tube are 
lighted up and then is dimmed after a second.
7.  In the state of step 6, press the [
x
] button on the remote com-
mander and “1   24” is displayed on the fl uorescent indicator 
tube.
Releasing method:
To release from this mode, press the [
?/1
] button on the main unit 
or press the [
?/1
] button on the remote commander.
AMP  TEST
Procedure:
1.  Touch the [
?/1
] touch key on the main unit to turn the power 
on.
2.  Press button in order of the [
x
→ [DISPLAY] → [VOL -] → 
[
M
] on the remote commander.
 
The messsage “MSURE” is displayed on the fl uorescent indi-
cator tube.
3.  In the state of step 2, press [DIMMER] button on the remote 
commander.
 
The message will appear in order of the “FULL” 
→ “THRU” 
→ “F2S” → “F2SB” → “F2CW” on the fl uorescent indicator 
tube.
4.  In the state of step 3, press [
m
] button on the remote com-
mander.
 
The message will appear in order of the “A.OFF” 
→ “A.ON” 
on the fl uorescent indicator tube.
5.  In the state of step 4, press [
%
] button on the remote com-
mander.
 
The message will appear in order of the “V.N” 
→ “V.MSM” on 
the fl uorescent indicator tube.
6.  In the state of step 5, press [CLEARAUDIO+] button on the 
remote commander.
 
The message will appear in order of the “VAON” 
→ “VAOFF” 
on the fl uorescent indicator tube.
7.  In the state of step 6, press [VOICE] button on the remote com-
mander to adjust the volume gain.
 
It can be adjusted between -3.0 to +3.0 (increase everytime 0.1 
step).
 
Eg: When gain +1.0 dB by pressing the [VOICE] button, the 
message “G +1.0” will appear on the fluorescent indicator 
tube.
8.  In the state of step 7, press [NIGHT] button on the remote 
commander to adjust the volume gain.
 
It can be adjusted between +3.0 to -3.0 (decrease everytime 0.1 
step).
 
Eg: When gain -1.0 dB by pressing the [NIGHT] button, the 
message “G -1.0” will appear on the fluorescent indicator tube.
WIRELESS  SOUND  TEST  MODE
It can display the 
μ-com version of Subwoofer (SA-WNT3).
Note : More than one item may be displayed on the fl uorescent indicator 
tube, but it is not used for the servicing other than “VER”.
Preparation:
•  Prepare the remote commander attached to this unit.
 Remote 
commander:
 
RM-AH110U (US and Canadian models)
 
RM-AH110E (Except US and Canadian models)
•  Connect the Bar Speaker (SA-NT3) and the Subwoofer (SA-WNT3) 
 by 
wireless.
Procedure:
1.  Press button in order of the [
x
→ [DISPLAY] → [CLEAR 
AUDIO+] 
→ [
M
] on the remote commander.
2.  The message “FACTR” is displayed on the fl uorescent indica-
tor tube and enter the wireless sound test mode.
3. Press 
the 
[
M
]/[
m
] buttons on the remote commander, select the 
“VER”, and press the [
] button on the remote commander.
4. The 
μ-com version of Subwoofer (SA-WNT3) is displayed on 
the fl uorescent indicator tube. For example, 0.12A.
5. When [
M
]/[
m
] buttons on the remote commander is pressed 
while the 
μ-com version of Subwoofer (SA-WNT3) is dis-
played on the fl uorescent indicator tube, year, month and day 
of the creation is displayed on the fl uorescent indicator tube. 
For example, 41027.
 When 
[
M
]/[
m
] buttons on the remote commander is pressed 
again, the display returns to the 
μ-com version of Subwoofer 
(SA-WNT3) display.
Releasing method:
Press the [
?/1
] button to release the test mode menu.
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