81
TROUBLESHOOTING GUIDES (Continued)
SERVO/SYSCON/LOGIC CIRCUIT
Is+5V supplied to
pin of IC601?
76
Is-24V supplied to
pin of IC601?
75
Are -20 and -16.5V
supplied to pin and
of G701?
1
35
Is 5V at pin of
IC601?
37
Check X602.
Check IC601.
Check the
D804
Check power circuit.
Check the power circuit
and D717.
Check IC604.
Is 5V applied to
pin of IC601.
YES
YES
YES
YES
YES
NO
NO
NO
A.
NO
NO
87
Check R624.
NO
Check X601
and IC601.
YES
Digitron does
not operate.
Summary of Contents for DV-K784N-JJ
Page 35: ...34 AC001 K884NZ SJ M K884NZ SG M only...
Page 36: ...35...
Page 37: ...36...
Page 38: ...37...
Page 39: ...38...
Page 66: ...65 ELECTRICAL ADJUSTMENTS Fig 1 Circuit Board Location...
Page 99: ...98 INTERCONNECT WIRING DIAGRAM K884N K784N K804N Hi Fi INTERCONNEC WIRING DIAGRAM REV 1 97 2 5...
Page 100: ...99 POWER SUPPLY SCHEMATIC DIAGRAM FREE VOLTAGE K884NY SJ M K884NZ SJ M K884NZ SG M...
Page 102: ...101 PRE AMP SCHEMATIC DIAGRAM K884N K784N 804N Hi Fi PREAMP SCHEMATIC DIAGRAM REV 1 97 2 5...
Page 103: ...102 VIDEO AUDIO SCHEMATIC DIAGRAM K884N K784N K804N...
Page 104: ...103 PIF MPX SCHEMATIC DIAGRAM K884N K784N K804N Hi Fi PIF MPX SCHENATIC DIAGRAM REV 1 97 2 5...
Page 105: ...104 TIMER SYSCON SCHEMATIC DIAGRAM K884N K784N K804N...
Page 106: ...105 Hi Fi AUDIO SCHEMATIC DIAGRAM K884N K784N K804N Hi Fi AUDIO SCHEMATIC DIAGRAM REV 1 97 2 5...
Page 107: ...106 POWER SUPPLY BLOCK DIAGRAM FREE VOLTAGE K884NY SJ M K884NZ SJ M K884NZ SG M...
Page 108: ...107 POWER SUPPLY BLOCK DIAGRAM 120V ONLY K884N SJ K884N JJ K884N SG K784N SJ K784N JJ K784N SG...
Page 109: ...108 PRE AMP BLOCK DIAGRAM K884N K784N K804N Hi Fi PREAMP BLOCK DIAGRAM REV 1 97 2 5...
Page 110: ...109 VIDEO AUDIO BLOCK DIAGRAM K884N K784N K804N Hi Fi VIDEO BLOCK DIAGRAM REV 1 97 2 5...
Page 111: ...110 PIF MPX BLOCK DIAGRAM K884N K784N K804N Hi Fi PIF MPX BLOCK DIAGRAM REV 1 97 2 5...
Page 113: ...112 Hi Fi AUDIO BLOCK DIAGRAM K884N K784N K804N AUDIO BLOCK DIAGRA REV 1 97 2 5...
