Sony HCD-GX255 Service Manual page 17

AGING MODE
This mode can be used for operation check of CD section and tape
deck section.
CD section and tape deck section work in parallel.
If an error occurred:
The aging operation stops only an error occurred sections and display
then status.
If no error occurs:
The aging operation continues repeatedly.
Procedure:
1. Press the button to turn the power on.
I/1
2. Press the [CD] button to select "CD".
3. Load three discs and insert two tape to the deck A and B.
, [ILLUMINATION] and [DISC SKIP/EX-
4. Press three buttons of
x
CHANGE] simultaneously.
5. Aging operations of CD and tape are started at the same time.
6. To release this mode, press the
off or press the function buttons to change the function.
1. Display at the Aging Mode
Display operating state of CD section and tape deck section
alternately.
If an error occurred, stop display which that section.
2. CD Section
The sequence during the aging mode is following as below.
Display at the aging mode is the same as the normal operation.
Aging mode sequence (CD section) :
Start (from disc 1)
Disc chucking
TOC read
Play first track for 2 seconds
Play last track for 2 seconds
EX-change open/close
Open the disc tray
Disc skip
Close the tray
Change the next disc.
button to turn the power
I/1
HCD-GX255/RG170/RG470
3. Tape Deck Section
The sequence during the aging mode is following as below.
If an error occurred, stop display that step.
Aging mode sequence (tape deck section) :
Rewind the tape A and B
"TAPE AAG-1 or TAPE BAG-2"
Shut off
FWD play the tape A
"TAPE AAG-3"
2 minutes
Rewind the tape A
"TAPE AAG-6"
Shut off
FWD play the tape B
"TAPE BAG-3"
2 minutes
Rewind the tape B
"TAPE BAG-6"
Shut off
Note: "TAPE *AG-*" is display of each step.
PANEL TEST MODE
This mode is used to check the fluorescent indicator tube, LEDs
and buttons.
Procedure:
1. Press the button to turn the power on.
I/1
2. Press three buttons of
x
simultaneously.
3. Fluorescent indicator tube and LEDs are all turned on.
4. Press two buttons of [ALBUM ---] and [ENTER] simultaneously,
mode is changed over.
5. In the key check mode, press each key, the defined key number
of every each key list is displayed on the fluorescent indicator
tube.
6. In the key count check mode, "KEYCNT 0" is displayed on
the fluorescent indicator tube. Each time a key is pressed, "K"
value increases. However, once a key is pressed, it is no longer
taken into account.
7. In the headphone input check mode, connect the headphone,
the message "H_P ON" is displayed on the fluorescent
indicator tube, and disconnect the headphone, the message
"H_P OFF" is displayed on the fluorescent indicator tube.
8. In the volume check mode, "VOLUME FLAT" is displayed
on the fluorescent indicator tube. Turn the [MASTER
VOLUME] knob clockwise, the message "VOLUME UP"
is displayed on the fluorescent indicator tube momentarily
and turn the [MASTER VOLUME] knob counterclockwise,
the message "VOLUME DOWN" is displayed on the
fluorescent indicator tube momentarily.
, [ILLUMINATION] and [GROOVE]
17