86
TROUBLESHOOTING
A-5. DVD E-E
Is there reset at ICD01 #14?
NO
NO
YES
YES
Is 12V obtained at ICD02 #8?
Are there signal at ICD02 #1, #7?
Is 12V obtained at IC251 #58?
Check DVD Board.
Check signal flow circuit.
NO sound DVD EE mode.
Are there voltage at ICD01
#8(5V), #9(3.3V), #21(5V)?
YES
Are there clocks at ICD01 #5(BCLK),
#6(LRCLK), #10(MCLK)?
Check ICD02
NO
YES
NO
Check POWER circuit.
YES
Is 5V obtained at IC251 #40?
YES
Is audio signal at IC251
#1,#2,#3, #4?
YES
Check output JACK.
Is audio signal output at IC251
#53, #57?
YES
NO
Check IC601.
Are CLK and DATA obtained at
IC251 pin#42,43?
Replace IC251
YES
YES
Is there MUTE(H)
at IC251 pin#36?
NO
YES
NO
YES
NO
All manuals and user guides at all-guides.com
Summary of Contents for DR-C912B
Page 13: ...11 INSTRUMENT DISASSEMBLY All manuals and user guides at all guides com...
Page 39: ...37 EXPLODED VIEW 6 3 EXPLODED VIEW OF FL ASS Y All manuals and user guides at all guides com...
Page 44: ...42 WAVEFORMS VIDEO WAVEFORMS 480 4 6 20 34 All manuals and user guides at all guides com...
Page 114: ...NORMAL AUDIO BLOCK DIAGRAM 112 BLOCK DIAGRAM All manuals and user guides at all guides com...
Page 117: ...AMP BLOCK DIAGRAM 115 BLOCK DIAGRAM All manuals and user guides at all guides com...
