SERVICE MANUAL
ADJUSTMENTS FOR DVD UNIT
1. Power on the unit only after ensuring DVD130
A
modules is connected correctly in accordance with the
wiring diagram.
2. If the unit fails to play after power-on, repair the DVD130
A
according to the service illustration until it can
read discs and has corresponding AV output.
3. Inspect audio output of the DVD130
A
in the following ways.
a. Inspect digital audio output: When playing a disc, connect a signal cable to the coaxial output
terminal. Press the SETUP button on the remote control and set
“
AUDIO OUT
”
in the SETUP
menu to
“
SPDIF/SOURCE CODE
”
. Then start playback with the PLAY button and the following
diagram will be displayed with waveform amplitude of 0.75
±
0.25Vpp on the oscilloscope. After
inspection, set
“
AUDIO OUT
”
to
“
ANALOG
”
.
b. Connect the OUT terminal on the DVD130
A
to the IN terminal on the TV and shift the TV to the DVD
mode. After power-on for several seconds, the TV should display the preset LOGO picture on the
screen, which should be smooth and distort-free with normal color. Press the OPEN/CLOSE button
on the remote control to open the disc tray. Place the disc on the disc tray. Press the PLAY button
and play should begin after several seconds. The color and sound should be normal, and picture
should be smooth and distortionless.
c. With a CD disc played, the TV should display the preset LOGO picture on the screen. The color
and sound should be normal, and picture should be smooth and distortionless.
14
Summary of Contents for MTV-DV05
Page 54: ...SERVICE MANUAL 3 block Diagram Fig17 MT1336 Function Block Diagram 54...
Page 69: ...4 Horizontal Vertical Scan Circuit 4 1 No raster but with sound SERVICE MANUAL 69...
Page 70: ...4 2 No picture and no sound but with raster 5 Audio System No sound SERVICE MANUAL 70...
Page 77: ...Circuit Diagram for AT1314DV...
Page 78: ...N COMB PCB ASSEMBLY...
Page 79: ...DVD Power PCB...
Page 80: ...BTSC PCB...