HCD-RV20, HCD-RV50, HCD-RV60 - Sony Audio Service Manual (repair manual). Page 3

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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 the [POWER] key to turn the power ON.
2. Press three keys of x , [GROOVE] and [POWER] simultaneously.
3. The message “COLD RESET” is displayed on the fluorescent

indicator tube momentarily, then becomes standby states.

• A step of AM channels can be changed over between 9 kHz and

10 kHz.

Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press the [TUNER BAND] key to select “AM”.
3. Press the [POWER] key to turn the power OFF.
4. Press two keys of [EFFECT ON/OFF] (RV20) or [ENTER] (RV50/

RV60) and [POWER] simultaneously.

5. The message “9K STEP” or “10K STEP” is displayed on the

fluorescent indicator tube, and thus the channel step is changed
over.

• 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 [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Press two keys of [CD] and [POWER] simultaneously.
4. The message “LOCK” is displayed on the fluorescent indicator

tube, and the CD ship mode is set.

• This mode is used to enable function of external input to change

over between MD and VIDEO.

Procedure:
1. Set to standby state.
2. Press two keys of [MD  VIDEO ]  and [POWER] simultaneously.
3. The message “MD” or “VIDEO” is displayed on the fluorescent

indicator tube, and the function of external input is changed
over.

• This mode is used to unable to take sample disc out of tray in the

shop.

Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Set disc on the tray.
4. While pressing the x key, press the Z key for 5 seconds.
5. The message “LOCKED” is displayed on the fluorescent

indicator tube and the tray is locked. (Even if pressing
the Z key,  the message “LOCKED” is displayed on the
fluorescent indicator tube and the tray is locked)

6. To release from this mode, while pressing the x key,  press

the Z key for 5 seconds.

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

indicator tube and the tray is unlocked.

• This mode is used to set the parameter of AMP IC for adjustment

of tone quality and VACS level and display VACS status.

Procedure:
1. Press the [POWER] key to turn the power ON.
2. Press three keys of x ,  [GAME EQ]  and  [EFFECT ON/OFF]

simultaneously.

3. When the AMP test mode is activated, the message “AMP

TEST” is displayed on the fluorescent indicator tube
momentarily.

4. Press two keys of [GAME EQ] and [DISC 2] simultaneously, mode

is changed over to parameter setting of AMP IC and display of
VACS status.

5. When the VACS status, the message VACS level, VACS signal

level, and VACS signal hold level is displayed on the fluorescent
indicator tube.

6. Press the [GROOVE] key, DBFB ON/OFF is changed over.
7. Press the [GAME MIXING] key, surround ON/OFF is changed

over.

8. Press the cursol  

B  and  b  key, EQ band is changed over to

LOW, MID or HIGH. (Case of HCD-RV50/RV60)

9. Press the cursol  

V  and  v  key, EQ curve adjustment value is

changed over between –8dB to +8dB. (Case of HCD-RV50/
RV60)

10. To release from this mode, press two keys of [GAME EQ] and

[MOVIE EQ] simultaneously.

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