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1-10-13
H9740TS
FLOW CHART NO.13
Hi-Fi audio can not be playbacked normally. (Hi-Fi E-E mode is normal.)
FLOW CHART NO.14
Hi-Fi audio can not be recorded normally in the linear audio mode. (E-E mode is normal.)
Is the audio signal inputted into Pin(13,15,17) of IC301?
Does the Bias oscillation circuit operate normally?
Is the audio signal outputted to Pin(11) of IC301?
Is the Playback Envelope signal outputted to
Pin(33) of IC451?
Replace IC301.
Is CN504 and the connected cable normal?
Is the Hi-Fi-H-SW signal inputted into to Pin(39) of IC451?
Yes
Yes
Yes
Is the audio signal outputted to Pin(100) of IC301?
Yes
Yes
Replace ACE head.
Yes
Yes
No
No
No
No
Check the Hi-Fi-H-SW line between
Pin(39) of IC451 and Pin(19) of
IC501, and service it if defective.
Check the line between Pin(78) of IC451 and
Pin(13,15,17) of IC301, and service it if defective.
Check the Bias oscillation circuit (Q401,Q403,
Q404,Q405,Q406) and service it if defective.
Replace
IC451.
Replace IC451.
No
Replace IC301.
No
Replace CN504 and the connected cable.
No
FLOW CHART NO.12
Hi-Fi audio can not be recorded normally. (E-E mode is normal.)
Is the REC FM signal outputted to Pin(26) of IC451?
Is the line between Pin(8) of CN251 and
Pin(26) of IC451 normal?
Replace the Cylinder Assembly.
Yes
Yes
No
Replace IC451.
No
Check the line between Pin(8) of CN251 and
Pin(26) of IC451, and service it if defective.
Summary of Contents for DV-NC100S
Page 48: ...1 12 3 1 12 4 H9740SCM1 Main 1 9 Schematic Diagram VCR Section ...
Page 50: ...Main 3 9 Schematic Diagram VCR Section 1 12 7 1 12 8 H9740SCM3 ...
Page 51: ...Main 4 9 Schematic Diagram VCR Section 1 12 9 1 12 10 H9740SCM4 ...
Page 52: ...1 12 11 1 12 12 H9740SCM5 Main 5 9 Schematic Diagram VCR Section ...
Page 53: ...Main 6 9 Schematic Diagram VCR Section 1 12 13 1 12 14 H9740SCM6 ...
Page 54: ...Main 7 9 DVD Open Close Schematic Diagrams VCR Section 1 12 15 1 12 16 H9740SCM7 ...
Page 55: ...Main 8 9 Schematic Diagram VCR Section 1 12 17 1 12 18 H9740SCM8 ...
Page 56: ...1 12 19 1 12 20 H9740SCM9 Main 9 9 Schematic Diagram VCR Section ...
Page 58: ...Jack A Schematic Diagram 1 12 23 1 12 24 H9740SCJ ...
Page 59: ...AFV Schematic Diagram 1 12 25 1 12 26 H9740SCAFV ...
Page 60: ...1 12 27 1 12 28 H9740SCD1 DVD Main 1 3 Schematic Diagram DVD Section ...
Page 61: ...1 12 29 1 12 30 H9740SCD2 DVD Main 2 3 Schematic Diagram DVD Section ...
Page 69: ...1 12 46 BE5900G04012 1 12 45 DVD MAIN CBA Top View ...
Page 70: ...1 12 47 1 12 48 BE5900G04012 DVD MAIN CBA Bottom View ...