3-6
YES
YES
NO
(4) No 12VA
Is there about 13V
at the IC155 pin1?
Is there about 3.3V~5V
at the IC155 pin4?
Check the IC155
and Replace
Check or Replace
the D109
NO
Check the ‘PWR CTL
“H”’ signal from µ-com
YES
YES
YES
YES
NO
NO
NO
(6) No VFD
No VFD
Is The R123
Normal?
Is The D107
Normal?
Is The ZD102
Normal?
Check and
Replace the D108
Replace the R123
Replace the R107
Replace the ZD102
YES
YES
NO
(5) No 30VA
No 30VA
Is The ZD110
Normal?
Check and
Replace the D110
Replace the ZD101
Summary of Contents for LST-3100A
Page 17: ...3 8 Fig 01 12 2880MHz clock Fig 02 48KHz clock Fig 04 Analog Audio Signal Fig 03 Data Signal ...
Page 19: ...3 10 Fig 06 Analog Audio Signal ...
Page 22: ...3 13 Fig 07 Digital Audio Signal Fig 08 Coaxial Digital Audio Signal ...
Page 31: ...3 23 FIG 04 V sync signal FIG 03 H sync signal ...
Page 33: ...3 25 FIG 05 Input Stream to IC203 FIG 06 Interrupt Signal ...
Page 34: ...3 26 ...
Page 35: ...3 27 ...
Page 36: ...3 28 YES D Check analog buffers IC303 for 480i Jump to A flow ...
Page 50: ...3 50 3 51 2 CPU AUDIO POWER CIRCUIT DIAGRAM ...
Page 51: ...3 52 3 53 3 HD2 TUNER DVI CIRCUIT DIAGRAM ...
Page 52: ...3 54 3 55 4 ATSCII STB CIRCUIT DIAGRAM ...
Page 53: ...3 56 3 57 5 FRONT CIRCUIT DIAGRAM ...
Page 54: ...3 58 3 59 PRINTED CIRCUIT DIAGRAMS 1 DIGITAL MAIN P C BOARD BOTTOM LOCATION GUIDE ...
Page 55: ...3 60 3 61 2 DIGITAL MAIN P C BOARD TOP ...
Page 56: ...3 62 3 63 3 FRONT P C BOARD 4 POWER P C BOARD LOCATION GUIDE ...
Page 57: ......
