HCD-ZX10D, LBT-ZX10D - Sony Audio Service Manual (repair manual). Page 16

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This mode is used to check the fluorescent indicator tube, LED,
model, destination, software version, volume, key, jog and VACS
level.
Procedure:

1. Press three buttons of

x

(TAPE B),  [TUNER ENTER] , and

[DISC 2] simultaneously.

2. All LEDs and segments in fluorescent indicator tube are lighted

up.

3. When you want to enter the software version display mode,

press the [DISC 1] button. The model and destination are dis-
played.

4. Each time [DISC 1] button is pressed, the display changes from

MC version, GC version, CD version, ST version, TC version,
TA version, TM version in this order, and returns to the MC
version display.

5. When [DISC 3] button is pressed while the version numbers are

being displayed except model and destination, the date of the
software creation appear. When [DISC 3] button is pressed again,
the display returns to the software version display. When
[DISC 1] button is pressed while the date of the software creation
is being displayed, the date of the software creation is displayed
in the same order of software version display.

6. Press the [DISC 2] button, the key check mode is activated.
7. In the key check mode, the fluorescent indicator tube displays

“K 0  J0 V0”. Each time a button is pressed, “K” value
increases. However, once a button has been pressed, it is no
longer taken into account.

8. When

 

[DISC 3]

 

button is pressed after all LEDs and segments

in fluorescent indicator tube light up, the fluorescent indicator
tube displays “VACS A   APBB”. A is VACS level which is
trigger by signal level while BB is VACS level which is trigger
by APVACS (Abuse Protection VACS).

9. When [EX-CHANGE] button is pressed after all LEDs and

segments in fluorescent indicator tube light up, alternate
segments in fluorescent indicator tube would light up. If you
press [EX-CHANGE] button again, another half of alternate
segments in fluorescent indicator tube would light up.  Pressing
[EX-CHANGE] button again would cause all segments lights up.

10. To release from this mode, press three buttons in the same

manner as step 1, or disconnect the power cord.

This mode is used to check operations of the respective sections of
amplifier, tuner, and tape.
Procedure:
•

1. Press three buttons of  

x

(TAPE B), [TUNER ENTER] , and

[DISC 3] simultaneously.

2. The 4 speaker symbols and CD ring indicators flash on the

fluorescent indicator tube. The function is changed to
“VIDEO”.

•

1. When  [ENTER]  button is pushed with the up side, GEQ

increases to its maximum and a message “GEQ MAX” appears
on the fluorescent indicator tube.

2. When  [ENTER]

 

button is pushed with the down side, GEQ

decreases to its minimum and a message “GEQ MIN” appears
on the fluorescent indicator tube.

3. When [ENTER] button is pushed with the left side or 

ENTER

button is pushed with the right side, GEQ is set to flat and a
message “GEQ FLAT” appears on the fluorescent indicator
tube.

4. When the [VOLUME] knob is turned clockwise even slightly,

the sound volume increases to its maximum and a message
“VOLUME MAX” appears on the fluorescent indicator tube.

5. When the [VOLUME] knob is turned counterclockwise even

slightly, the sound volume decreases to its minimum and a
message “VOLUME MIN” appears on the fluorescent
indicator tube.

•

1. When a tape is inserted in deck-B and recording is started, the

function is changed to “VIDEO” automatically. When

[CD SYNC] button is pressed during recording in function, ALC

(Automatic Logic Control) is turned on.

2. During recording, press the

.

 

m

  (TAPE B) button will

stop the recording and the function is changed to “TAPE B”
and rewind the tape in deck-B until the recording start position
and playback of the tape is started. If the [REC PAUSE/START]
button is pressed for a pause and pressed again to resume
recording during recording time, when the tape is rewind, the
tape will be rewind until the position where the pause is applied.

•

1. Press the [FUNCTION] button to select the “TAPE A” or “TAPE

B”.

2. Press the [DIRECTION] button to select loop or relay mode.

Insert a test tape AMS-110A or AMS-120 to selected tape
deck.

3. Press the [AMP MENU] button to enter the AMS test mode.
4. After the test tape is rewind to the beginning of the tape, the

AMS+ is checked, and the mechanism is shut off after detecting
the AMS signal twice.

5. Then the AMS– is checked and the mechanism is shut off

after detecting the AMS signal twice.

6. When the check is complete, a message of either “OK” or

“NG” appears on the fluorescent indicator tube.

•

1. To release from this mode, press the

I

/1

button.

2. The cold reset is enforced at the same time.

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 of

x

(TAPE B), [TUNER ENTER]

 

, and

 I

/1

simultaneously.

2. The fluorescent indicator tube becomes blank for a while, and

the set is reset.

This mode is used to switch on and off the VACS (Variable
Attenuation Control System).
Procedure:

1. Press the

I

/1

button to turn the power on.

2. Press two buttons of [PLAY MODE] and

I

/1

simultaneously.

The message “VACS OFF” or “VACS ON” appears on the
fluorescent indicator tube.

The step interval of AM channels can be toggled between 9 kHz
and 10 kHz.
Procedure:

1. Press the

I

/1

button to turn the power on.

2. Press the [TUNER/BAND] button to select the “AM”.
3. Press the

I

/1

button to turn the power off.

4. Press two buttons of [TUNER ENTER] and  

I

/1

  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.