3-33
(D)
Check NTSC encoder(IC403)
Check current display mode is 480i
Using VFD message.
Change display format to 480i
by pressing front format button.
OK
NO
NG
Check NTSC mute signal is low.
Check Q403,404,405 base voltage.
Must be low.
If not, check IC201 pin 44
OK
NG
power check; L401 3.3V
Analog output:
IC403 pin 30(composite) FIG.12,
pin 27(Y), pin 24 (C). FIG.13
Pixel clock: 27MHz continuous
Clock in IC403 pin 4. FIG.14
IIC: IC403 pin41(SCL) pin 42(SDA)
FIG.15
Is there any quantize noise
or unstable sync timing?
OK
Check digita input data short
IC403 pin9~16.
YES
Fig.12
Fig.13
Fig.14
Fig.15
Summary of Contents for HD-SAT520
Page 8: ...3 8 Fig 01 Fig 02 Fig 03 Fig 04 Fig 05 Fig 06 Fig 07 Fig 08...
Page 14: ...3 14 Fig 12 Fig 13...
Page 39: ...3 39 FIG 01 FIG 02 FIG 03 FIG 04 FIG 05...
Page 105: ...3 68 3 69 2 FRONT CIRCUIT DIAGRAM...
Page 106: ...3 70 3 71 3 CPU 1 CIRCUIT DIAGRAM...
Page 107: ...3 72 3 73 4 CPU 2 CIRCUIT DIAGRAM...
Page 108: ...3 74 3 75 5 TERRESTRIAL CIRCUIT DIAGRAM...
Page 109: ...3 76 3 77 6 DVI TRANSMITTER NTSC ENCODER CIRCUIT DIAGRAM...
Page 110: ...3 78 3 79 7 ATSC TP DEMUX VD XDO CIRCUIT DIAGRAM...
Page 111: ...3 80 3 81 8 VDP I F DISPLAY CIRCUIT DIAGRAM...
Page 112: ...3 82 3 83 9 AUDIO DECODER SPDIF CIRCUIT DIAGRAM...
Page 113: ...3 84 3 85 10 NTSC AUDIO PROCESSOR CIRCUIT DIAGRAM...
Page 114: ...3 86 3 87 11 POWER DSS FRONT CIRCUIT DIAGRAM...
Page 115: ...3 88 3 89 12 DIRECTV TP DEMUX CIRCUIT DIAGRAM...
Page 116: ...3 90 3 91 13 SMART CARD I F CIRCUIT DIAGRAM 1...
Page 117: ...3 92 3 93 14 SMART CARD I F CIRCUIT DIAGRAM 2...
Page 118: ...3 94 3 95 PRINTED CIRCUIT DIAGRAMS 1 DIGITAL MAIN P C BOARD BOTTOM...
Page 119: ...3 96 3 97 2 DIGITAL MAIN P C BOARD TOP...
Page 120: ...3 98 3 99 3 POWER P C BOARD 4 KEY P C BOARD 5 KEY P C BOARD LOCATION GUIDE...
