94
TROUBLESHOOTING GUIDES (Continued)
B.
NO
Is the ENVE level of IC901 pin
Q
more than 200mVp-p?
Is A.SW PULSE input into
pin
w
of IC901?
Is pin
W
of IC901 0V ?
Change IC901
Is the ENVE level into pin
Q
of IC901?
NO
Check the ICH01
of PRE-AMP circuit
NO
Check IC601
YES
Change IC901
YES
YES
YES
No Hi-Fi sound
in playback mode of Hi-Fi recorded tape.
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...
