Sony NAS-SV20DI / NAS-SV20I (serv.man2) Service Manual ▷ View online
NAS-SV20Di/SV20i
9
2-7. SPEAKER BOX ASSY
– Rear bottom side view –
1
screw
(BVTP3
u 8)
4
five screws
(BVTP3
u 10)
4
six screws
(BVTP3
u 10)
3
6
6
6
5
3
2
FERRITE CORE board
7
speaker box assy
:ire SroFessiQJ
speaker wire
tape
tape
tape
NAS-SV20Di/SV20i
10
2-8. LOUDSPEAKER (6.5 cm) (SP1/SP2)
224 mm
EVA cushion (10)
EVA cushion (10)
clamp filter
(ferrite core)
(ferrite core)
tape
tape
clamp filter
(ferrite core)
(ferrite core)
The wire is made triple to roll.
164 mm
:LUHSURFHVVLQJ
–5HDUERWWRPVLGHYLHZ–
–5FKVLGH–
–/FKVLGH–
1
two terminals
1
two terminals
4
loudspeaker (6.5 cm)
(SP1: L-ch)
4
loudspeaker (6.5 cm)
(SP2: R-ch)
to Loudspeaker (6.5 cm)
(SP2) (R-ch)
to Loudspeaker (6.5 cm)
(SP1) (L-ch)
(SP2) (R-ch)
to Loudspeaker (6.5 cm)
(SP1) (L-ch)
2
speaker wire block
3
four screws
(BVTP3
u 8)
3
four screws
(BVTP3
u 8)
110 mm ± 3 mm
110 mm ± 3 mm
EVA cushion (10)
speaker wire
speaker wire
NAS-SV20Di/SV20i
11
2-9. LCD BOARD BLOCK
3
flexible flat cable (5 core)
(CN400)
tape
4
POWER_SW board
POWER_SW board
LCD board
LCD-JUNC board
4
LCD board block
– Rear bottom side view –
1
two screws
(BVTP3
u 8)
5
two screws
(BVTP3
u 8)
5
two screws
(BVTP3
u 8)
2
claw
:ire SroFessiQJ
NAS-SV20Di/SV20i
12
SECTION 3
TEST MODE
SETTING THE SERVICE MODE
Setting method:
1. Connect the AC plug.
2. Touch the [u] and [v] sensors simultaneously within one
Setting method:
1. Connect the AC plug.
2. Touch the [u] and [v] sensors simultaneously within one
second after “WELCOME” is displayed
3. Enter the test mode, and display the main menu screen.
RELEASING THE TEST MODE
Disconnect the AC plug.
Disconnect the AC plug.
OPERATION OF THE SERVICE MODE
0. KEY
The buttons and touch sensors are confi rmed.
0. KEY
The buttons and touch sensors are confi rmed.
Procedure:
1. Enter the service mode, and touch the [u] sensor.
2. The key test mode is begun. Press all buttons except [\/1]
1. Enter the service mode, and touch the [u] sensor.
2. The key test mode is begun. Press all buttons except [\/1]
button, and touch all sensors.
3. Then, the key test mode ends if the [\/1] button is pressed,
and it returns to the main menu screen.
0-0. KEY_LOAD
The key driver is loaded.
The key driver is loaded.
Procedure:
1. Enter the service mode.
2. Touch the [>] sensor to select “0:KEY_LOAD”.
3. Touch the [u] sensor, the key driver is loaded.
4. Touch the [.] sensor, return to the main menu screen.
1. Enter the service mode.
2. Touch the [>] sensor to select “0:KEY_LOAD”.
3. Touch the [u] sensor, the key driver is loaded.
4. Touch the [.] sensor, return to the main menu screen.
0-1. KEY_Unld
The key driver is unloaded.
The key driver is unloaded.
Procedure:
1. Enter the service mode.
2. Touch the [>] sensor, and touch the [m] sensor to select
1. Enter the service mode.
2. Touch the [>] sensor, and touch the [m] sensor to select
“1:KEY_Unld”.
3. Touch the [u] sensor, the key driver is unloaded.
4. Disconnect the AC plug because the all key operation becomes
4. Disconnect the AC plug because the all key operation becomes
impossible.
1. Version
The software version is displayed.
The software version is displayed.
Procedure:
1. Enter the service mode, and touch the [m] sensor to select
1. Enter the service mode, and touch the [m] sensor to select
“1:Version”.
2. Touch the [u] sensor, the software version is displayed.
When the region is set, it is displayed at the right side of the
third line.
third line.
3. Press the [PARTY] button, return to the main menu screen.
2. LCD
The liquid crystal display is confi rmed.
The liquid crystal display is confi rmed.
Procedure:
1. Enter the service mode, and touch the [m] sensor to select
1. Enter the service mode, and touch the [m] sensor to select
“2:LCD”.
2. Touch the [u] sensor, all segments in the liquid crystal dis-
play are lighted up. Then, the brightness of backlight keeps
changing into three stages.
changing into three stages.
3. Press the [PARTY] button, return to the main menu screen.
2-0. LCD_Bright
The brightness of backlight is changed.
The brightness of backlight is changed.
Procedure:
1. Enter the service mode, and touch the [m] sensor to select
1. Enter the service mode, and touch the [m] sensor to select
“2:LCD”.
2. Touch the [>] sensor to select “0:LCD_Bright”.
3. Touch the [u] sensor.
4. The brightness of backlight changes into three stages when-
3. Touch the [u] sensor.
4. The brightness of backlight changes into three stages when-
ever the [m]/[M] sensors are touched.
5. Press the [PARTY] button, and touch the [.] sensor, return
to the main menu screen.
2-1. LCD_Pattern
The display pattern is changed.
The display pattern is changed.
Procedure:
1. Enter the service mode, and touch the [m] sensor to select
1. Enter the service mode, and touch the [m] sensor to select
“2:LCD”.
2. Touch the [>] sensor, and touch the [m] sensor to select
“1:LCD_Pattern”.
3. Touch the [u] sensor.
4. The display pattern is changed whenever the [m]/[M] sensors
4. The display pattern is changed whenever the [m]/[M] sensors
are touched.
5. The icon segment lights one by one whenever the [m]/[M] sen-
sors are touched.
6. Press the [PARTY] button, and touch the [.] sensor, return
to the main menu screen.
2-2. LCD_Font
The font is edited.
The font is edited.
Procedure:
1. Enter the service mode, and touch the [m] sensor to select
1. Enter the service mode, and touch the [m] sensor to select
“2:LCD”.
2. Touch the [>] sensor, and touch the [m] sensor to select
“2:LCD_Font”.
3. Touch the [u] sensor.
4. In this state, the font can be edited.
5. Press the [PARTY] button, and touch the [.] sensor, return
4. In this state, the font can be edited.
5. Press the [PARTY] button, and touch the [.] sensor, return
to the main menu screen.
3. Micon
The micon software version is displayed.
The micon software version is displayed.
Procedure:
1. Enter the service mode, and touch the [m] sensor to select
1. Enter the service mode, and touch the [m] sensor to select
“3:Micon”.
2. Touch the [u] sensor, the micon software version is dis-
played.
3. Press the [PARTY] button, return to the main menu screen.
3-0. Micon_Load
The micon driver is loaded.
The micon driver is loaded.
Procedure:
1. Enter the service mode, and touch the [m] sensor to select
1. Enter the service mode, and touch the [m] sensor to select
“3:Micon”.
2. Touch the [>] sensor, and touch the [m] sensor to select
“0:Micon_Load”.
3. Touch the [u] sensor.
4. The micon driver is loaded.
5. Touch the [.] sensor, return to the main menu screen.
4. The micon driver is loaded.
5. Touch the [.] sensor, return to the main menu screen.
Click on the first or last page to see other NAS-SV20DI / NAS-SV20I (serv.man2) service manuals if exist.