3-14
5) AUDIO PART
No
Yes
Yes
No
No
No
Yes
Yes
No
No
Yes
Yes
No
Yes
Yes
No
When there is no sound after
the power is normally turned on,
Video is
normally displayed
Check whether the rear audio
output terminal is correctly
connected to TV or AMP
Check whether the input is
correctly selected
Check whether the
volume of TV or AMP
is correctly selected
Check the clock output
whether the power of
VX100 is correctly supplied
Check whether
the volume is correctly
selected
AC-3 Decoder
Check whether 27MHz clock
is supplied to IC127 36-Pin
Check
whether data and clock are
supplied to Audio DAC
IC128 2,4,5-Pin
Check
w9V input is
supplied to OP AMP IC125,
126,131,132 8-Pin
Check
whether TR Q104 and
Q1055 2-pin are
Low(0V)
Check
whether 39-pin
of IC160 is Low
(0V)
AC3 Decoder
Check whether clock and data
are supplied to IC127
40,41-Pin
Check
whether 10-Pin
Clock of IC118 is
supplied
Control the volume.
Check the 3-pin
Clock of IC118
Check whether TP data is
supplied to IC113
Check TP output at IC119
Check +9V output at 3-pin
of IC149
Check +12V output at 4
and 6-pin of J119
Check whether
Q104 and Q1055
are correctly connected
Check IC129 power input
and I2C Bus connection
Audio Mute is activated
Check whether IC160
power is supplied
Summary of Contents for HDR230
Page 28: ......
Page 34: ......
Page 37: ......
Page 38: ...3 17 3 18 4 WAVEFORMS 1 DIGITAL SYSTEM CLOCK GENERATOR PART 1 2 3...
Page 39: ...3 19 3 20 2 DIGITAL SYSTEM SYSTEM MEMORY PART 1 2 3...
Page 40: ...3 21 3 22 3 VIDEO PLL PART 1 2...
Page 41: ...3 23 3 24 4 VIDEO OUTPUT CONNECTOR PART 1 2 3 BMK800 BMK800 BMK800 33PF 33PF 33PF...
Page 43: ...3 27 3 28 6 PVR CLOCK PART 1 2 3...
Page 44: ...3 29 3 30 7 VSB VSB DECODER PART 1...
Page 45: ...3 31 3 32 8 VSB DOWN CONVERTER PART 1...
Page 46: ...3 33 3 34 9 MICOM DOWN CONVERTER PART 1...
Page 47: ......
Page 65: ...3 74 3 75 10 VSB CIRCUIT DIAGRAM IF VSB TP Data clock error valid 03 3 15 HDR230 DNS...
Page 67: ...3 78 3 79 12 POWER IF COM VIDEO CIRCUIT DIAGRAM CVBS OUT Y OUT C OUT 03 3 15 HDR230...
Page 68: ...3 80 3 81 13 FRONT CIRCUIT DIAGRAM RIGHT LEFT 03 3 15 HDR230...
Page 69: ...3 82 3 83 8 PRINTED CIRCUIT DIAGRAMS 1 DIGITAL MAIN PRINTED CIRCUIT DIAGRAMS TOP...
Page 70: ...3 84 3 85 2 DIGITAL MAIN PRINTED CIRCUIT DIAGRAMS BOTTOM...
Page 72: ...3 88 3 89 5 POWER PRINTED CIRCUIT DIAGRAM LOCATION GUIDDE...
