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1-10-12
H9740TS
FLOW CHART NO.11
Hi-Fi E-E audio does not operate normally.
Check the peripheral circuit of the front input
terminal and service it if defective.
Check the peripheral circuit of the Scart jack 1
(JK101) and service it if defective.
Check the peripheral circuit of the Scart jack 2
(JK1402) and service it if defective.
Check the circuit of AL+5V, P-ON+5V and
AL+9V, and service it if defective.
Is the SIF signal outputted from Pin(22) of the tuner?
Is the 5V voltage supplied to Pins(16,32,35,36,46,55) of
IC451, or the 9V voltage supplied to Pin(69) of IC451?
Is the serial data and the clock signal supplied to
Pin(37,38) of IC451?
Is the audio signal outputted to Pin(65,67,74,76)
of IC451?
Is the audio signal inputted into Pin(2,12) of
IC751?
Is the audio signal outputted to Pin(14,15) of
IC751?
Is each signal supplied to each pin of IC451 as below?
Front input terminal
L-ch
R-ch
Pin(8)
Pin(54)
Pin(6)
Pin(52)
Pin(4)
Pin(50)
Scart jack 1 (JK101)
Pin(10)
Pin(56)
Scart jack 2 (JK1402)
Tuner audio signal
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
Check the line between Pins(4,
50) of IC451 and Pin(22) of
tuner, and service it if defective.
Check the line between Pin(37,38) of IC451 and
Pin(71,72) of IC501, and service it if defective.
Check the line between Pin(53) of IC451 and
Pin(28) of IC501, and service it if defective.
Check the line between Pin(74,76) of IC451 and
Pin(2,12) of IC751, and service it if defective.
Is approximately 5V voltage supplied to Pin(16)
of IC751, or approximately -5V voltage supplied to
Pin(7) of IC751?
Replace IC751.
Check the AL+5V line and the AL-30V line
(R764, R765), and service it if defective.
Check the line between Pin(14,15) of IC751 and
Pin(1,3) of JK101 (Scart jack), and service it if
defective.
Replace IC451.
Replace IC501.
Replace the
tuner.
Is the "L" pulse inputted into the Pin(53) of IC451?
Is the "L " pulse inputted into the Pins(9,10,11) of
IC751?
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 ...