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2. CD Test Mode
In the CD test mode, the set works as following sequence.
CD test mode sequence:
1. Enter the CD test mode
2. STOP mode
Press the u (CD)
button.
3. FOCUS mode
Press the u (CD)
button.
4. ALL SERVO
ON mode
Press the u (CD)
button.
5. LPC OFF
mode
Press the u (CD)
button.
6. TRACKING
GAIN UP mode
Press the u (CD)
button.
Note: TRACKING GAIN UP mode is not used in servicing.
1. Entering the CD Test Mode
1. Press the
button to turn the power ON.
?/1
[EJECT ]
2. Press the
Z
button to open the disc tray, and put a
disc.
[EJECT ]
3. Press the
button to close the disc tray.
Z
4. Press the
?/1
button to turn the power OFF.
5. While pressing the both
[CD]
press the
(function) button.
6. Enter the CD test mode, and display as below for a few sec-
onds.
Display
AUTO
F
* * * *
Note: Lights up "STEREO" indication
Does not light up "STEREO" indication: LPC OFF
*) LPC: Laser power control
7. Then display as below, and enter the STOP mode.
Display
* * * *
Press the x (CD)
button.
Press the x (CD)
button.
Press the x (CD)
button.
Press the x (CD)
button.
(TAPE) and
(CD) buttons,
x
x
STEREO
: LPC ON
STEREO
2. STOP Mode
[EJECT ]
1. Press the
Z
button twice to disc tray open and close.
(All servo ON)
2. Press the
and
>
.
to position of the track where signal is recorded.
3. FOCUS Mode
1. Press the
button to enter the FOCUS mode and display
u
as below. (Focus servo ON. CLV-S, tacking and sled servo
OFF)
Display
F
* * * *
2. Connect an oscilloscope to TP (TE) and TP (VC) on the BD
board.
Connection:
oscilloscope
(DC range)
BD board
TP (TE)
TP (VC)
3. Confirm the traverse level and center value of waveform sat-
isfy specified value as follows.
Traverse waveform
0 V
Specified value:
traverse level A: more than 350 mVp-p
center value B : 0 ± 50 mV
button to move the optical pick-up
+
–
Center of the waveform
A
B (DC
voltage)
7
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