HCD-ZX70DVD - Sony Audio Service Manual (repair manual). Page 5

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• 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 ,  DISPLAY , and  DISC 5 simultaneously.
2. The fluorescent indicator tube displays “COLD RESET” and

the set is reset.

To initialize DVD, refer to “Initializing set up data” in the “4. TEST
MODE 4-7. EMERGENCY HISTORY” (see page 15).

• This mode resets the set with the preset data kept stored in the

memory.  The hot reset mode functions same as if the power
cord is plugged in and out.

Procedure:
1. Press three buttons  x ,  DISPLAY , and  DISC 1  simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,

and the set is reset.

• This mode can run the CD sled motor freely. Use this mode, for

instance, when cleaning the optical pick-up.

Procedure:
1. Enter the test mode. (Refer to “4. TEST MODE” on page 7)
2. Press the 

[2]

 key of remote commander to enter the “Drive

Manual Operation”.

3. Press the 

[2]

 key of remote commander to enter the “Servo

Control”. (Refer to “2. Servo Control” on page 14)

4. Press the  

t  (outward) or T (inward) key of remote

commander to move the sled motor.

5. To release this mode, press the  ?/1  button to turn the power

OFF.

 • Always move the pickup to most inside track when exiting from

this mode.  Otherwise, a disc will not be unloaded.

• Do not run the sled motor excessively, otherwise the gear can be

chipped.

• Remote commander: RM-SD170 (Part No.: 1-418-911-11)

• This mode is used to switch ON and OFF the VACS (Variable

Attenuation Control System).

Procedure:
1. Press ?/1 button to turn the set ON.
2. Press the PUSH ENTER and x buttons simultaneously.  The

message “VACS OFF” or “VACS ON” appears.

• 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  MODE SELECT  and ?/1 buttons simultaneously, 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.

• This mode is used to check the software version, FL tube, LED,

keyboard and VACS.

Procedure:
1. Press ?/1 button to turn the set ON.
2. Press three buttons  x  ,  DISPLAY  , and  DISC 2  simultaneously.
3. LEDs and fluorescent indicator tube are all turned on.
4. When you want to enter the software version display mode,

press  DISC 1 .  The model number and destination are displayed.

5. Each time  DISC 1  is pressed, the display changes starting

from Z-DVD version,  MC version, GC version, VC version,
DVD version, ST version, TC version, TA version, TM version
and BR version in this order, and returns to the model number
and destination display.

6. When  DISC 3  is pressed while the version numbers are being

displayed except model number and destination, year, month
and day of the software creation appear.  When  DISC 3  is
pressed again, the display returns to the software version display.
When  DISC 1  is pressed while year, month and day of the
software creation are being displayed, the year, month and day
of creation of the software versions are displayed in the same
order of version display.

7. Press  DISC 2  button, and the key check mode is activated.
8. In the key check mode, the fluorescent indicator tube displays

“K 

0

 Vo 

0

 Stick N”.  Each time a button is pressed, “K 0”

value increases. However, once a button is pressed, it is no longer
taken into account.
“Vo 0” value increases like 1, 2, 3 ... if rotating  VOLUME
knob in “+”  direction, or it decreases like 0, 9, 8 ... if rotating in
“–” direction.
Moving the stick changes the “STICK N” display.
When moved up

: “STICK 

R”

When moved down

: “STICK r ”

When moved to the left : “STICK 

T”

When moved to the right : “STICK 

t”

9. Also when  DISC 3  is pressed after lighting of all LEDs and FL

tubes, value of VACS appears.

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

as step 1, or disconnect the power cord.