3-31
NO
NO
YES
YES
YES
When DTV is main
OK
(C1)
Check input stream existence.
Any problem?
Is there any decoding problem?
Is there any problem in selecting
ATSC and DSS?
Check signal strength.
If OK, check system clock 27MHz.
(X600 pin 3,IC602 pin 31)
Stream Input Check (IC501,502,503)
Terr. : check VSB(IC303 ) block. FIG.05
DSS: check TPN ( IC1950 ) block.
Check voltage of IC501,502,503 pin1.
ATSC: 3.3V, DSS: 0V
Check HD 1 chip Interrupt
(R503) FIG.06
Fig.05
Fig.06
Содержание HD-SAT520
Страница 8: ...3 8 Fig 01 Fig 02 Fig 03 Fig 04 Fig 05 Fig 06 Fig 07 Fig 08...
Страница 14: ...3 14 Fig 12 Fig 13...
Страница 39: ...3 39 FIG 01 FIG 02 FIG 03 FIG 04 FIG 05...
Страница 105: ...3 68 3 69 2 FRONT CIRCUIT DIAGRAM...
Страница 106: ...3 70 3 71 3 CPU 1 CIRCUIT DIAGRAM...
Страница 107: ...3 72 3 73 4 CPU 2 CIRCUIT DIAGRAM...
Страница 108: ...3 74 3 75 5 TERRESTRIAL CIRCUIT DIAGRAM...
Страница 109: ...3 76 3 77 6 DVI TRANSMITTER NTSC ENCODER CIRCUIT DIAGRAM...
Страница 110: ...3 78 3 79 7 ATSC TP DEMUX VD XDO CIRCUIT DIAGRAM...
Страница 111: ...3 80 3 81 8 VDP I F DISPLAY CIRCUIT DIAGRAM...
Страница 112: ...3 82 3 83 9 AUDIO DECODER SPDIF CIRCUIT DIAGRAM...
Страница 113: ...3 84 3 85 10 NTSC AUDIO PROCESSOR CIRCUIT DIAGRAM...
Страница 114: ...3 86 3 87 11 POWER DSS FRONT CIRCUIT DIAGRAM...
Страница 115: ...3 88 3 89 12 DIRECTV TP DEMUX CIRCUIT DIAGRAM...
Страница 116: ...3 90 3 91 13 SMART CARD I F CIRCUIT DIAGRAM 1...
Страница 117: ...3 92 3 93 14 SMART CARD I F CIRCUIT DIAGRAM 2...
Страница 118: ...3 94 3 95 PRINTED CIRCUIT DIAGRAMS 1 DIGITAL MAIN P C BOARD BOTTOM...
Страница 119: ...3 96 3 97 2 DIGITAL MAIN P C BOARD TOP...
Страница 120: ...3 98 3 99 3 POWER P C BOARD 4 KEY P C BOARD 5 KEY P C BOARD LOCATION GUIDE...