Read Sony SA-NS400 Service Manual online
SA-NS400
11
SECTION 3
TEST MODE
VERSION DISPLAY MODE
Procedure:
1. Slide the [POWER] switch to turn the power on the system.
2. Press and hold down the two keys [AUDIO IN] and [VOL –] simultaneously (about 3 sec).
3. The version of the system is displayed. The method of version display is described in the following “Version Display Operation Speci-
Procedure:
1. Slide the [POWER] switch to turn the power on the system.
2. Press and hold down the two keys [AUDIO IN] and [VOL –] simultaneously (about 3 sec).
3. The version of the system is displayed. The method of version display is described in the following “Version Display Operation Speci-
fi cation”.
4. To release from this mode, operate any keys such as [VOL+], [VOL –] or slide the [POWER] switch to turn the power off.
KEY/LED TEST MODE
Key tests and LED illumination tests can be performed on a board basis. *When fl ickering, all the LED’s repeat the cycle of 0.5 sec on and
0.5 sec off states.
Procedure:
1. Slide the [POWER] switch to turn the power on the system.
2. Press and hold down the three keys [PARTY], [WPS] and [VOL –] simultaneously (about 3 sec).
3. All the LED’s lights up.
4. To release from this mode, perform the same procedure as the item 2 or slide the [POWER] switch to turn the power off.
Key tests and LED illumination tests can be performed on a board basis. *When fl ickering, all the LED’s repeat the cycle of 0.5 sec on and
0.5 sec off states.
Procedure:
1. Slide the [POWER] switch to turn the power on the system.
2. Press and hold down the three keys [PARTY], [WPS] and [VOL –] simultaneously (about 3 sec).
3. All the LED’s lights up.
4. To release from this mode, perform the same procedure as the item 2 or slide the [POWER] switch to turn the power off.
Boards Check
PANEL board
When each trigger is given, the states are changed through a sequence of the steps as given below.
PANEL board
When each trigger is given, the states are changed through a sequence of the steps as given below.
PARTY LED
ILLUMINATION LED (blue)
ILLUMINATION LED
(PLAY) (white)
STEP
TRIGGER
Red
Green
Center
Side
Center
Side
0
MODE IN
on
on
on
on
on
on
1
Pressing of [PARTY] key
on
off
on
off
on
off
2
Pressing of [PARTY] key
off
on
on
on
off
off
3
Pressing of [PARTY] key
off
off
off
off
on
on
(4)
(Automatic transit after 2 sec)
blink
blink
blink
blink
blink
blink
MAIN board
When each trigger is given, the states are changed through a sequence of the steps as given below.
When each trigger is given, the states are changed through a sequence of the steps as given below.
LED
STEP
TRIGGER
AUDIO IN
LINK (red)
LINK (green)
0
MODE IN
on
on
on
1
Pressing of [AUDIO IN] key
on
off
off
2
Pressing of [VOL –] key
off
on
off
3
Pressing of [VOL +] key
off
off
on
4
Pressing of [WPS] key
off
off
off
(5)
(Automatic transit after 2 sec)
blink
blink
blink
LED
STEP
TRIGGER
NETWORK STANDBY
0
MODE IN
on
1
Pressing of [ALL RESET] key
2 sec blink
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