CMT-M333NT, HCD-M333 - Sony Audio Service Manual (repair manual). Page 9

9

The disc tray lock function for the antitheft of a demonstration disc in the store is equipped.
Procedure:
1.

Press the  ?/1  button to turn the set on.

2.

Select the function “CD”.

3.

A disc is put in and a tray is closed.

4.

Press two buttons of  x  and  Z  (CD) simultaneously for five seconds.

5.

The message “LOCKED” is displayed and the tray is locked. (Even if turning power on/off, the tray is still locked.)

6.

Press two buttons of  x  and  Z  (CD) simultaneously for five seconds again.

7.

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

Under such a position, please do the following confirmation.

Checking the earth from the TC board to the chassis
With this unit, when playing back the cassette tape and turning up the volume while the earth connection of the TC board is detached from the
chassis, oscillation may occur and the tweeter may be damaged.
Therefore, check that the earth is securely connected to the chassis after repair.

About “R”
As this unit has only a few buttons, some operations require the use of remote commander (RM-SM100W/provided with unit)  buttons. These
operations are indicated as “R” in this manual.
Example:  MENU/NO “R”  ...Press the  MENU/NO  button of the remote commander.

Incorrect operations may be performed if the test mode is not entered properly.
In this case, press the  ?/1  button to turn the power off, and retry to enter the test mode.

If the disc tray does not open and the message “LOCKED” appears, press the two buttons of  

x

  and  Z  (CD)  at the same for

5 seconds or longer.
Then the lock is released, the message “UNLOCKED” appears for 2 seconds and the disc tray opens.

MAIN BOARD

TC BOARD

*

 

earth wire

*

 

earth terminal

cassette mechanism deck
(CMAL1Z-233A)

*

 

Either an earth wire or an earth terminal is attached.