HCD-GN1200D, MHC-GN1200D - Sony Audio Service Manual (repair manual). Page 19

Procedure:
1. Press 

 

 button to turn on the system.

2.  Select DVD function.
3. Press 

Y

 button, [SOUND FLASH] button and 

 

 but-

ton simultaneously during “DVD NO DISC” condition. The 
system will turn off automatically.

4.  After the “STANDBY” blinking display fi nishes, a message 

“MECHA LOCK” appears on the fl uorescent indicator tube 
and the DVD ship mode is set.

5.   The Memory is clear after AC Power OFF.

[DVD SHIP MODE (WITHOUT MEMORY CLEAR)]
•  This mode moves the optical pick-up to the position durable 

to vibration. Use this mode when returning the set to the cus-
tomer after repair.

Procedure:
1. Press 

 

 button to turn on the system.

2.  Select DVD function.
3.  Press [DVD] button and 

 

 button simultaneously during 

“DVD NO DISC” condition. The system will turn off auto-
matically.

4.  After the “STANDBY” blinking display fi nishes, a message 

“MECHA LOCK” appears on the fl uorescent indicator tube 
and the DVD ship mode is set.

[DVD TRAY LOCK MODE]
•  This mode is used to lock the disc tray. When this mode is acti-

vated, the disc tray will not open when [OPEN/CLOSE] button 
or [EX-CHANGE/DISC SKIP] button is pressed. The message 
“LOCKED” appears on the fl uorescent indicator tube.

Procedure:
1. Press 

 

 button to turn on the system.

2.  Select DVD function.
3. Press 

Y

 button and [OPEN/CLOSE] button simultaneously 

and hold down until “LOCKED” or “UNLOCKED” appears 
on the fl uorescent indicator tube (around 5 seconds).

[TV/SAT SWITCHING]
•  This mode let you switch from TV to SAT and vice-versa.
 
Procedure:
1. Press 

 

 button to turn on the system.

2. Select 

TV 

function.

3.  Press [TV/SAT] button and 

 

 button simultaneously.  The 

function will change to SAT. Press the same buttons again to 
change from SAT to TV. 

[DVD COLOR SYSTEM]
•  This mode let you change the color system of the video output 

from PAL to NTSC or vice-versa.

Procedure:
1. Press 

 

 button to turn on the system.

2.  Select DVD function.
3. Press 

 

 button again to turn off the system.

4. Press 

9

 button and 

 

 button simultaneously. The sys-

tem will turn on automatically.

5.  The message “COLOR PAL” or “COLOR NTSC” appears on 

the fl uorescent indicator tube.

[REMOTE COMMANDER DISABLE MODE]
•  This mode let you disable the remote commander reception. 

When this mode is activated, the system will not response if 
the button on the remote commander is pressed. The message 
“Remote Disable” appears on the fl uorescent indicator tube. 

This mode is essential for conducting test and repairing when 
no interruption from the other remote commander is expected. 
This mode is cancelled automatically when the AC power sup-
ply is turned off.

Procedure:
1. Press 

 

 button to turn on the system.

2. Press 

Y

 button, [FLANGER] button and [DISC 2] button 

 

simultaneousl untill“RemoteDisable” or “RemoteEnable” ap-
pears on the fl uorescent indicator tube.

[TCM OFFLINE MODE]
•  This mode is used to prevent the system from turning off au-

tomatically when TCM is not connected. Therefore, measure-
ments can be done even when TCM is not connected during 
production.

 
• Procedure:
1.  When the system is turned off, press [EQ BAND] button, 

[TAPE A/B] button and 

 

 button simultaneously. The sys-

tem will turn on automatically.

2.  The message “TCM OFFLINE” will appears on the fl uores-

cent indicator tube.

•  To release from TCM Offl ine Mode, perform “COLD RESET” 

or turn off the power supply.

[DVD FIRMWARE DISPLAY]
• This mode is used to display the DVD fi rmware version. 

• Procedure:
1. Press 

 

 button to turn on the system.

2.  Press [DVD] button to switch to DVD function.
3. Press 

 

 button again to turn off the system.

4. Press 

Y

 button and 

 

 button. 

     The system turns on automatically.
5.  The version of DVD fi rmware appears on the TV screen.

 [DVD OFFLINE]
•   This mode is used to enable audio output from the function 

other than DVD function in order to check the audio output 
from the system without connecting DVD.

 

This model is also used to prevent system enter protector mode 
when DVD is not connected.

• Procedure:
1.  When the system is turnd off, press 

Y

 button, [FLANGER] 

button and [DISC 1] button simultaneously and the message 
“DVD OFFLINE” appears on the fl uorescent indicator tube.

•  To release from DVD Offl ine Mode
 

To release from this mode, perform “COLD RESET” or turn 
off the power supply.

[VACS DISPLAY]
•  This mode is used to check the VACS level.

• Procedure:
1.   Press 

 

 button to turn on the system.

2.   Press 

Y

 button, [SOUND FIELD] button and [DISC 2] but-

ton simultaneously.

3.   The VACS Level Display, the fl uorescent indicator tube dis-

plays  “VATB F APC”. “V” represent VACS , A represent 
VACS level which is triggered by signal level, “T” represent 
Thermal VACS NEO, B represent VACS level which is trig-
gered by temperature, “F” represent FAN is triggered by soft-
ware to turn in to high speed, “AP” represent APVACS (Abuse