HCD-WZ5, HCD-WZ50, MHC-WZ5 - Sony Audio Service Manual (repair manual). Page 14

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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  ,   EQ EDIT  and  ?/1   simultaneously.
2. The liquid crystal display does not display any message and the

set is reset.

• This mode is used to select the function of MD or VIDEO.
Procedure:
1. Press the  ?/1  button to turn the set on.
2. Press the  MD(VIDEO)  and    ?/1   buttons simultaneously.
3. The function will change from MD to VIDEO, and "VIDEO" is

displayed.

4. To change change back to MD , repeat the same procedure.

• Either the 9 kHz step or 10 kHz step can be selected for the AM

channel step.

Procedure:
1. Set the function to AM.
2. Turn off the main power.
3. While depressing the  x   button, press the  ?/1   button to turn

on the main power.

4. The channel step is changed over.
* For E model only

• 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  ?/1  button to turn the set on.
2. Set the function to CD.
3. Press the  x    button and the  

M    (Control lever) button

simultaneously.

4. After the "STANDBY" display blinks six times, the message

"LOCK" is displayed on the liquid crystal display, and the CD
ship mode is set.

• This mode is used to perform the CD Ship Mode with Cold Reset.
Procedure:
1. Press the  ?/1  button to turn the set on.
2. Set the function to CD.
3. Press three buttons  x    ,    z  START  (REC PAUSE) and

.m –  simultaneously.

4. After the "STANDBY" display blinks six times, the message

"LOCK" is displayed on the liquid crystal display, and the CD
ship mode is set.

• The disc tray lock function for the antitheft of an demonstration

disc in the store is equipped.

Setting Procedure :
1. Press the  ?/1  button to turn the set on.
2. Set the function to CD.
3. Press two buttons of   x  and   Z   simultaneously for five seconds.
4. The message “LOCKED” is displayed and the tray is locked.
Releasing Procedure :
1. Press two buttons of   x  and   Z  simultaneously for five seconds

again.

2. The message “UNLOCKED” is displayed and the tray is

unlocked.

Note :When “LOCKED” is displayed, the tray lock is not released

by turning power on/off with the  ?/1  button.

• This mode is used to check the software version, key board, VACS

level, liquid crystal display and LEDs.

Procedure:
1. Press three buttons  x      ,    z  START  (REC PAUSE) and

TUNER/BAND  simultaneously.

2. Segments of the liquid crystal display and LEDs are all turned

on.

3. To enter the software version display mode, press the  .m –

button. The model name and destination are displayed.

4. Each time the  .m –  button is pressed, the display changes

in the following order. MC, GC, CD, CDD, CDMA, CDMB,
BDA, BDB, ST, TA, TM, TC and MD. Each time the  + M >
button is pressed, the contents of the version display change.

5. Press the  hH  button, and the key check mode is activated.
6. In the key check mode, "K 0 V 0" is displayed. Each time a

button is pressed, "K 0" value increases. However, once a button
is pressed, it is no longer taken into account. "V 0" value
increases like 1, 2, 3 ... if rotaing the  VOLUME  knob clockwise,
or it decreases like 0, 9, 8 ... if rotating couterclockwise.

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

as step 1, or disconnect the power cord.

• VACS Level Display Mode
Procedure:
1. Press three buttons  x      ,    z  START  (REC PAUSE) and

TUNER/BAND  simultaneously.

2. Press the  X  button. The VACS level "VACS 0+0" is displayed.
3. To exit from this mode, press three buttons in the same manner

as step 1, or disconnect the power cord.

• Display Check
Procedure:
1. Press three buttons  x   ,  z  START  (REC PAUSE) and

TUNER/BAND  simultaneously.

2. Press the  x  button and the display changes. Each time the  x

button is pressed, the pattern of segments changes.

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

as step 1, or disconnect the power cord.

• This mode is used to switch on and off the VACS (Variable

Attenuation Control System).

Procedure:
1. Press the  ?/1  button to turn the set on.
2. To enter the test mode, press three buttons  x  ,  z  START

(REC PAUSE) and  MOVIE MODE  simultaneously.

3. The message "VACS OFF" or "VACS ON" appears.