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14
SECTION 4
TEST MODE
[LED All Lit, Key Check Mode]
Procedure:
1. Press the
?
/
1
button to turn the power ON.
2. Press three buttons of
s
(DECK B),
A
(DISC 1), and
[DISC 5]
simultaneously.
3. LEDs are all turned on.
Press the
G
(CD) button, and the key check mode is activated.
LEDs are all OFF.
4. When a button is pressed, the LED near the pressed button
blinks or lights up.
Also, if all buttons are pressed, all LEDs light up (not blink).
5. To release from this mode, press three buttons in the same
manner as step 2, or remove the power cord.
[CD Delivery Mode]
• This mode moves the optical pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
after repair.
Procedure:
1. Press the
?
/
1
button to turn the power ON.
2. Press the
s
(DECK B) and
[DISC 1]
buttons simultaneously.
3. A message “LOCK” is displayed on the liquid crystal display
of the STR-NX300, and the CD delivery mode is set.
[Tape Deck Test Mode]
(In case of connected to the STR-NX300)
• If connected to the STR-NX300, the mode also acts as the STR-
NX300 amplifier test mode.
Procedure:
1. Press the
?
/
1
button to turn the power ON.
2. Press three buttons of
s
(DECK B),
A
(DISC 1), and
S
(CD)
simultaneously.
3. On liquid crystal display of the STR-NX300, the disc calen-
dar blinks, and “ALC OFF” is displayed, then the function
which was set before the test mode became active is displayed.
4. The automatic level control of the tape deck is in OFF status,
but while the
s
(CD) and
[REC PAUSE/START]
buttons are
pressed during recording, automatic level control goes in ON
status.
[Tape Deck Test Mode]
(In case of connected to the power feed jig)
Procedure:
1. Turn on the Power switch on the power feed jig.
2. Press three buttons of
s
(DECK B),
A
(DISC 1),
and
s
(CD) simultaneously.
3. The
G
(CD) and
S
(CD) LEDs blink, and then pressing
G
(CD),
G
/
g
(DECK A), or
G
/
g
(DECK B) button can
make each play possible.
4. Also, the other functions are enabled by pressing two buttons
simultaneously.
A combination of respective functions and buttons is as fol-
lows.
function
button
CD AMS –
s
(DECK A),
S
(CD)
AMS +
s
(DECK A),
s
(CD)
FR
s
(DECK B),
S
(CD)
FF
s
(DECK B),
s
(CD)
Deck-A REW/AMS –
s
(CD),
g
(DECK A)
FF/AMS +
s
(CD),
G
(DECK A)
Deck-B REW/AMS –
s
(CD),
g
(DECK B)
FF/AMS +
s
(CD),
G
(DECK B)
Note:
Check that CD/TC signal change switch of relay connector jig is
set to the TC position.
[VIDEO CD Color-bars Mode]
On this mode, the data of the color-bars signal as a picture signal
and the 1 kHz sine wave signal as a sound signal are output by the
mechanism controller (IC505) for the video CD signal check.
When measurement of the voltage and waveform on the VIDEO
board, perform it in this mode.
For reference, the color-bars signal can be observed at J502
(VIDEO OUT) and the sound signal can be observed at J101
(VIDEO/MD (AUDIO) OUT) (STR-NX300) using an oscillo-
scope.
Procedure:
1. Short the both ends of the land of SL503 of the VIDEO board.
2. Turn the power on. Press the
[FUNCTION]
button to select
CD.
3. The color-bars appears when the CD is in stop status, and it
disappears when the CD goes in play status.
4. After measuring, remove the lead wire connected.
– VIDEO board (Side B) –
CN501
SL501
SL502
SL503
CN502
IC505
Содержание HTC-NX300
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