FST-ZX100D, FST-ZX80D, HCD-ZX100D, HCD-ZX80D, LBT-ZX100D, LBT-ZX80D - Sony Audio Service Manual (repair manual). Page 17

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This mode is used to check the fluorescent indicator tube, LEDs,
keys, MASTER VOLUME knob, OPERATION DIAL knob, X-
ROUND JOG knob, model, destination, software version and VACS
level.
Procedure:

1. Press three buttons of

x

, [ENTER] and [DISC 2] simultaneously.

2. All LEDs except

I

/1

LED (green color) 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 information appears on
the fluorescent indicator tube.

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

from destination information, MC version, GC version, SYS
version, DVD version, ST version, TC version, TA version,
TM version in this order, and returns to the model information
display.

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

are being displayed except model information and destination
information, the date of the software creation appears. When
the [DISC 3] button is pressed again, the display returns to the
software version display. When the [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 V0J0 X0”. Each time a button is pressed, “K 0” value
increases. However, once a button has been pressed, it is no
longer taken into account.

8. “V” value increases in the manner of 0, 1, 2, 3 ... if the

[MASTER VOLUME] knob is turned clockwise, or it decreases
in the manner of 0, 9, 8, 7 ... if the [MASTER VOLUME] knob is
turned  counterclockwise.
“J” value increases in the manner of 0, 1, 2, 3 ... if the
[OPERATION DIAL] knob is turned clockwise, or it decreases
in the manner of 0, 9, 8, 7 ... if the [OPERATION DIAL] knob is
turned  counterclockwise.
“X” value increases in the manner of 0, 1, 2, 3 ... if the [X-
ROUND JOG] knob is turned clockwise, or it decreases in the
manner of 0, 9, 8, 7 ... if the [X-ROUND JOG] knob is turned
counterclockwise.

9. When the

 

[DISC 3]

 

button is pressed after all LEDs except

I

/1

LED

(green color) and segments in fluorescent indicator tube light
up, the fluorescent indicator tube displays “VACS A+B F
APC”. A is conventional VACS level which is triggered by
signal level. B is thermal VACS level which is triggered by
temperature F is shown if the fan is turned in high speed and
vice-versa. C is VACS level which is triggered by APVACS
(Abuse Protection VACS). The signal level , which will trigger
VACS A is shown in the center area of the fluorescent
indicator tube.

10. When [EX-CHANGE/DISC SKIP] button is pressed after all LEDs

except

I

/1

LED (green color) and segments in fluorescent

indicator tube light up, alternate segments in fluorescent
indicator tube and LEDs would light up. If you press [EX-
CHANGE/DISC SKIP] button again, another half of alternate
segments in fluorescent indicator tube and LEDs would light
up. Press [EX-CHANGE/DISC SKIP] button again would cause
all LEDs except

I

/1

LED (green color) and segments in

fluorescent indicator tube lights up.

11. 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 and tape.
Procedure:

•

1. Press three buttons of

x

, [ENTER] and [DISC 3] simultaneously.

2. The DVD ring indicators, tape A and B indicators and the line

below DVD ring indicators and tape A and B indicators flash
synchronously on the fluorescent indicator tube. The function
is changed to “TV”.

•

1. Press the [EQ BAND] button repeatedly until a message “GEQ

MAX” appears on the fluorescent indicator tube. GEQ
increases to its maximum.

2. Press the [EQ BAND] button repeatedly until a message “GEQ

MIN” appears on the fluorescent indicator tube. GEQ
decreases to its minimum.

3. Press the [EQ BAND] button repeatedly until a message “GEQ

FLAT” appears on the fluorescent indicator tube. GEQ is set
to flat.

4. When the [MASTER 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 [MASTER 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 “TV” automatically. When the [CD
SYNC] button is pressed during recording in function, ALC
(Automatic Logic Control) is turned on.

2. During recording, press the  

m

  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. 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.
Procedure:

1. Press the

I/

1

button to turn on the system.

2. Press three buttons of

x

, [ENTER] and

I/

1

simultaneously.

3. The message “COLD RESET“ appears on the fluorescent

indicator tube. Then, the fluorescent indicator tube becomes
blink for a while , and the system 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 on the system.

2. Press two buttons of

x

and [ILLUMINATION] simultaneously.

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