Test Mode - Sony HCD-GX450 Service Manual

[Change-over of AM Tuner Step between 9 kHz and
10 kHz]
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press ?/1 button to turn the set ON.
2. Select the function "TUNER", and press TUNER/BAND
button to select the BAND "AM".
3. Press ?/1 button to turn the set OFF.
4. Press PLAY MODE/TUNING MODE and ?/1 buttons si-
multaneously, and the display of fluorescent indicator tube
changes to "AM 9 k STEP" or "AM 10 k STEP", and thus the
channel step is changed over.
[Cold Reset]
• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Press three buttons x , PLAY MODE/TUNING MODE ,
and DISC 1 simultaneously.
2. The fluorescent indicator tube displays "COLD RESET" and
the set is reset.
[Aging Mode]
This mode can be used for operation check of CD section and tape
deck section.
• If an error occurred:
The aging operation stops and is displayed status.
• If no error occurs:
The aging operation continues repeatedly.
1. Operating method of Aging Mode
Press ?/1 button to turn the set ON and select "CD" of the function.
1) Set three discs in tray. Press the PLAY MODE/TUNING MODE
button to set the "ALL DISCS" mode, and the PRESET EQ
button to "REPEAT" off.
2) Load the tapes recording use into both decks.
3) Press three buttons x , PLAY MODE/TUNING MODE ,
and EX-CHANGE simultaneously.
4) Aging operations of CD and tape are started at the same time.
5) To exit the aging mode, perform [Cold Reset].
2. Aging mode in CD section
1) Operation during aging mode
• In the agining mode ,the program is excuted in the following
sequence.
(1) The disc tray opens and closes.
(2) The disc tray turns to select a disc 3.
(3) The pick-up accesses to the first track, and plays 3 seconds.
(4) The pick-up accesses to the last track, and plays 3 seconds.
(5) The disc tray opens and closes.
(6) The disc tray turns to select a disc 1.
(7) The same operation starts like step (3).
(8) After a disc 1 aging operation, a disc 2 is selected.
(9) When an aging operation of a disc 3 is completed, the display
∗∗∗∗
"AGING " value increases.
(10) If no error occurs, the aging operation continues repeatedly.
SECTION 2

TEST MODE

2) Error display
Display
E00D01022
E00D02022
E00D02023
E00D02014
Display
E00M__E_0
E00M__C_2
E00M__D_0
E00M__F_3
E00M__D_5
E00M__C_2
E00M__C_3
3. Aging mode in Tape Deck section
1) Operation during aging mode
• In the agining mode, the program is excuted in the following
sequence.
Step
1 Rewind the TAPE A
2 Rewind the TAPE B
3 Play the TAPE A (1 minute)
4 Stop the TAPE A (1 second)
5 Play the TAPE A (3 minutes)
6 Rewind(AMS) the TAPE A
7 F.F.(AMS) the TAPE A
8 Play the TAPE B (1 minute)
9 Stop the TAPE B (1 second)
10 Record the TAPE B (3 minutes)
11 Rewind(AMS) the TAPE B
12 F.F.(AMS) the TAPE B
2) Error display
• If error occurred, the display remains like "TAPE BAG-2".
4. Exiting from the aging mode
• Be sure to perform Cold Reset to exit from the aging mode.
HCD-GX450
Disc error
Error
Focus error (No disc)
Sub Q error (Focus is good)
TOC reading error
Access error (Unable within regular time)
Mechanism error
Error
Error during opening tray
EX-CHANGE disc error
Error during closing tray
EX-OPEN error
EX-CLOSE error
Chuck-up error
Unchucking error
Operation
TAPE
TAPE
TAPE
TAPE
TAPE
TAPE
TAPE
TAPE
TAPE
TAPE
TAPE
TAPE
Display
AAG-1
BAG-2
AAG-2
AAG-3
AAG-4
AAG-5
AAG-6
BAG-2
BAG-3
BAG-4
BAG-5
BAG-6
13