8
TROUBLESHOOTING
Noise appears on the Full
playback screen.
Are SW pulse and HA SW
normal?
Recheck step C-1 (Bad
playback quallty (1)).
Check HEAD AMP connector
and HEAD.
YES
YES
NO
NO
ENVE Wave at PT01 pin #4?
Check VIDEO circuit.
Are there SW, HA SW pulse at
IC601 pin #16, 18?
Check PCB Pattern.
Check IC601.
C-2. Bad playback quality (2)
No broadcasting signal
received
Is the output at IC601 pin#
71(CLK), 72 (DATA) normal?
Is SIF,Video output at
TMI(RF101) pin#18,20 normal?
Check IC 601.
Check IC301.
Check IC601.
YES
YES
NO
NO
NO
Is Video Signal input at IC601
pin#50?
Is there Video output at IC601
pin#52?
Check TMI (RF101) Block.
NO
Check Video Buffer Q101
D. No broadcasting signal received
YES
YES
NO
YES
YES
YES
Summary of Contents for DV6T811N-LT
Page 27: ...26 WAVEFORMS 15 9 P201 2 2 AUDIO 2 1 AUDIO Mono 2 2 AUDIO HI Fl Q901 collector...
Page 29: ...28 CIRCUIT DIAGRAM 1 POWER SUPPLY SCHEMATIC DIAGRAM 120V ONLY 5...
Page 30: ...29 CIRCUIT DIAGRAM 2 PO W ER SUPPLY SCH EM ATIC DIA G RA M DV D CO M BO FREE 5...
Page 31: ...30 CIRCUIT DIAGRAM 3 VIDEO AUDIO SCHEMATIC DIAGRAM...
Page 32: ...CIRCUIT DIAGRAM 4 SERVO SYSCON SCHEMATIC DIAGRAM 31...
Page 33: ...CIRCUIT DIAGRAM 5 DIGITAL AUDIO SCHEMATIC DIAGRAM 32...
Page 34: ...CIRCUIT DIAGRAM 6 Hi Fi SW CIRCUIT DIAGRAM 33...
Page 35: ...CIRCUIT DIAGRAM 7 INPUT AUTPUT SCHEMATIC DIAGRAM 34...
Page 36: ...CIRCUIT DIAGRAM ATATI 35...
Page 37: ...CIRCUIT DIAGRAM 36...
Page 38: ...CIRCUIT DIAGRAM CPU 37...
Page 39: ...CIRCUIT DIAGRAM DECODER 38...
Page 40: ...39 PCB CIRCUIT BOARD 1 1 VCR MAIN 6...
Page 41: ...PCB CIRCUIT BOARD 1 2 POWER 40...
Page 42: ...PCB CIRCUIT BOARD 1 3 LOGIC 41...
Page 43: ...PCB CIRCUIT BOARD 2 1 DVD MAIN A 42...
