3-13
yes
no
yes
no
yes
yes
no
yes
no
A/V Out port
No video screen
signal
Check J118.5 -> F114 -> R467 -> C742 -> C741->R746->
R737->Q709->L709->R723->Q706->R728 signal.
Check whether Q703.base is Low(0V) (Mute Off)
Check whether L112 terminal is +9V
System error
Check Front Display format LED
Check F118 -> R478 -> C746->IC165.7->C744->R748->
R739->Q711->L711->R725->Q708 terminal C_OUT
signal.
Check whether L708 has bad soldering
Check whether L708(6.8uH) has bad soldering
Check whether Q704.base and Q705.base are Low(0V)
(Mute Off)
Check whether the front display format LED is 480i (OFF)
Check F117 -> R477 -> C747->IC165.1->C743->R747->
R738->Q710->L710->R724->Q707->R729 terminal
Y_OUT signal. Check whether L708 has bad soldering
S-video port
No signal
RGB/YPbPr
Normal output?
No S-video screen color
RGB/YPbPr
Normal output
System debugging
S-video
No screen signal
A/V Out port ok
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...
