3-12
RGB signal is missing
yes
no
yes
no
Component port
Normal output?
Check the direction of IC151
Check IC151.4 -> 9V, IC151.11 -> ground
Check whether there exists Pin 7, 8 and 12 signals of IC151 from
VGA connector
Red :
J111.1 -> F106 -> R471 -> C471
Green : J111.2 -> F107 -> R473 -> C472
Blue :
Check J111.3 -> F108 -> R474 -> C473 signal
Check whether R429, R430, R439, R440, R441 and R442 have
bad soldering
Check L122 terminal is +9V.
Check whether R507,R508, R244, R245 and R246 have bad
soldering
Check Green signal : Check whether there exists Q115.Base and
IC151.12 signals.
Check Red signal :
Check whether there exists Q114.Base and
IC151.5 signals
Check Blue signal :
Check whether there exists Q116.Base and
IC151.10 signals
Check IC151 and IC152 direction
Check IC151.4 -> 9V, IC151.11 -> ground
Check the direction of IC162
Check IC162.20 -> 3.3V
Check IC162.10 -> ground
Check Hsync: Check J111.13 -> F109 -> R449 -> IC162.18 ->
IC162.2 signals
Check Vsync: Check J111.14 -> F110 -> R450 -> IC162.16 ->
IC162.4 signals
Check the direction of IC151
Check IC151.4 -> 9V, IC151.11 -> ground
Check whether L122 terminal is +9V.
Check Hsync and Vsync (See the above block)
Check whether R507,R508, R244, R245 and R246 have bad
soldering
Check Green signal : Check whether there exists Q115.Base and
IC151.12 signals.
Check Red signal :
Check whether there exists Q114.Base and
IC151.5 signals
Check Blue signal :
Check whether there exists Q116.Base and
IC151.10 signals
Check IC151 and IC152 direction
Check IC151.4 -> 9V, IC151.11 -> ground
No RGB screen
signal
Normal YPbPr port output
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...
