Sony HCD-GNX60, Service Manual, Page: 20 / 86

18
HCD-GNX60/GNX70/GX9900
[VACS ON/OFF]
• This mode is used to switch ON and OFF the VACS (Variable
Attenuation Control System).
Procedure:
1. Press
?/1
button to turn the set ON.
2. Press x button and [ILLUMINATION] button simultaneously.
The message “VACS OFF” or “VACS ON” appears on the
fluorescent indicator tube.
[TUNER STEP CHANGE]
• The step interval of AM channels can be toggled between 9
kHz and 10 kHz.
Procedure:
1. Press
?/1
button to turn the set ON.
2. Press
[TUNER/BAND]
button repeatedly to select the “AM”.
3. Press
?/1
button to turn the set OFF.
4. Press
[ENTER]
button and
?/1
button simultaneously. The
system will turn ON automatically. The message “AM 9k
STEP” or AM 10k STEP” appears on the fluorescent indicator
tube and thus the channel step is changed.
[CD SERVICE MODE]
• This mode let you move the CD sled motor freely. Use this
mode when you want to clean the optical pick-up.
Procedure:
1. Press
?/1
button to turn the set ON.
2. Select CD function.
3. Press
x
,
[ENTER]
button, and
Z
OPEN/CLOSE button
simultaneously.
4. The CD service mode is activated. The message “SERVICE
MODE” appears.
5. With the CD in stop status, turn M m knob to clockwise
rotation to move the optical pick-up to outside track, or turn
M m
knob to counterclockwise rotation to move to
inside track. The message “SLED OUT” or “SLED IN”
appears on the fluorescent indicator tube.
6. To turn on or off the laser, press [DIRECTION] button. The
message “LASER ON” or “LASER OFF” appears on the
fluorescent indicator tube.
7. To release this mode, press
?/1
button.
[AGING MODE]
This mode can be used for operation check of CD section.
• If an error occurs, the aging operation would stops and the
status is displayed.
• If there are no error occurs, the aging operation would
continues repeatedly.
Procedure:
1. Press
?/1
button to turn the set ON
2. Select CD function.
3. Load three discs on the disc tray.
4. Press
[PLAY MODE] button repeatedly to select the “ALL
DISCS” mode, and press the
[REPEAT]
button repeatedly to
select “REPEAT OFF” mode.
5. Press
x
button,
[ENTER]
button, and
[EX-CHANGE/DISC
SKIP]
button simultaneously.
6. Aging operation is started.
7. To release this mode, press
?/1
button or disconnect the
power cord to turn the power OFF.
Aging mode sequence:
Start (from disc 1)
Disc chucking
TOC reading
Play first track for 2 seconds
Play last track for 2 seconds
EX-CHANGE open/close
Open the disc tray
Disc skip
Close the disk tray
Change the next disc