STR-DH510 - Sony Audio Service Manual (repair manual). Page 10

DMPORT MODE
*  All preset contents are cleared when this mode is activated. Use 

this mode before returning the product to clients upon comple-
tion of repair.

* Procedure:
1.  Connect the DMPORT check jig (P/N: J-2501-309-A) with 

the DMPORT Jack (J2901) on the MICOM board.

2.  While pressing the [TUNING MODE] and [MUSIC] buttons, 

press the [

?/1

] button to turn on the main power.

3.  The message “DMPORT T.” and “DMPORTOK” appears on 

the fl uorescent indicator tube and enter the digital media port 
test mode. (Confi rmation of communication line). When 
“NO DET”, “UART NG” and “UART TO” are displayed on 
the fl uorescent indicator tube, confi rm the connection of the 
DMPORT check jig, and enter the mode again. Each time the 
[>] button on the remote commander is pressed, the con-
nect check and adaptor version check are switched. Press the 
[.] button on the remote commander, connected confi rma-
tion of the DMPORT check jig is done again.

4.  To a pin jack of the DMPORT check jig input information 

relevant to audio signal (sine-wave 1.0V rms) and composite 
video signal (white 100% 1.0Vp-p, color bar, etc).

5. Confi rm the output of speakers and monitor TV. (Confi rma-

tion of analog signal).

6.  To release from this mode, press the [x] button on the remote 

commander.