CMT-SPZ50, CMT-SPZ70, HCD-SPZ50, HCD-SPZ70 - Sony Audio Service Manual (repair manual). Page 11

11

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 [PLAY MODE/TUNING MODE], [DISPLAY]

and  

I/

1 

 simultaneously.

2. The fluorescent indicator tube becomes blank momentarily,

then becomes standby states.

This mode is used to check operations of Amplifier.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press three buttons of [DSGX],

 

[DISC SKIP/EX-CHANGE] and

[DISPLAY] simultaneously.

3. When the COMMON test mode is activated, “SLEEP” and

“c PLAY” blink on the fluorescent indicator tube.

– HCD-SPZ70 –
4. Turn the [BASS]  knob counterclockwise, “TONE MIN” is

displayed on the fluorescent indicator tube. Turn the [BASS]
knob clockwise, “TONE MAX” is displayed on the fluorescent
indicator tube. Turn the [TREBLE]  knob clockwise or
counterclockwise, “TONE FLAT” is displayed on the
fluorescent indicator tube.

– HCD-SPZ50 –
4. Each time [EQ] button is pressed, the display changes starting

“TONE MIN”, “TONE FLAT” and “TONE MAX” this order.

5. Turn the [VOLUME] knob counterclockwise, “VOL MIN” is

displayed on the fluorescent indicator tube. Turn the [VOLUME]
knob clockwise, “VOL MAX” is displayed on the fluorescent
indicator tube.

6. To release this mode, press the

I/

1

button.

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

1. Press the

I/

1

button to turn the power on.

2. Press three buttons of [PLAY MODE/TUNING MODE], [FUNCTION]

and [DISPLAY] simultaneously.

3. Fluorescent indicator tube is all turned on and each LED of

[DSGX] and [STANDBY] blink every 0.5 seconds.

4. When you want to enter the model, destination and version display

mode, press the [DISPLAY] button. The model and destination
are displayed alternately on the fluorescent indicator tube.

5. Press the [DISPLAY] button again MC version, display on the

fluorescent indicator tube.

6. When [FUNCTION] button is pressed while the MC version is

displayed, year, month and day of the software creation display.
When [FUNCTION] button is pressed again, the display returns
to the MC version display.

7. Press the [PUSH ENTER] button, the key check mode is

activated.

8. In the key check mode, the fluorescent indicator tube displays

“K 0 J0 V0”.

9. Each time a button is pressed, “K” value increases. However,

once a button is pressed, it is no longer taken into account.
All keys are pressed, display becomes “K25” (SPZ50) or
“K23” (SPZ70).

10. “V” value increases 1, 2, 3 ... if turn the [VOLUME]  knob

clockwise, or it decreases 0, 9, 8 ... if turn the knob
counterclockwise
“J” value increases like 1, 2, 3 ... if turn the [BASS] (SPZ70
only) or [TREBLE] (SPZ70 only) or jog knob clockwise, or it
decreases like 0, 9, 8 ... if turn the knob counterclockwise.

11. To release this mode, press three keys in the same manner as

step 2, or disconnect the power cord.

This mode moves the optical pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
after repair.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press the [FUNCTION] button to select “CD”.
3. Press two buttons of [PLAY MODE/TUNING MODE] and [DISC

1] simultaneously.

4. After the “STANDBY” display blinks, “LOCK” is displayed

on the fluorescent indicator tube, and the ship mode is set.

This mode is used to perform CD ship mode and cold reset
simultaneously.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press the [FUNCTION] button to select “CD”.
3. Press three buttons of [DSGX], [DISC SKIP/EX-CHANGE] and

[DISC 1] simultaneously.

4. After the “STANDBY” display blinks, “LOCK” is displayed

on the fluorescent indicator tube, and the ship mode is set.

This mode is used to unable to take sample disc out of disc table in
the shop.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press the [FUNCTION] button to select “CD”.
3. Press two buttons of

x

and

Z

for 5 seconds.

4. The message “LOCKED” is displayed on the fluorescent

indicator tube and the disc slot is locked. (Even if pressing
the

Z

button, the message “LOCKED” is displayed on the

fluorescent indicator tube and the disc table is locked)

5. To release from this mode, press two buttons of

x

and 

Z

for

5 seconds.

6. The message “UNLOCKED” is displayed on the fluorescent

indicator tube and the disc table is unlocked.

This mode is used to changed over CD power on/off for decreasing
of reception noise in the tuner mode.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press the [FUNCTION] button to select “CD”.
3. Press the

I/

1

button again to turn the power off.

4. Press two buttons of

x

and

I/

1

simultaneously.

5. The message “CD POWER” is displayed on the fluorescent

indicator tube momentarily, then display changes “ON” or
“OFF”, and CD power on/off changed over in the tuner mode.