• Service Manuals |
  • Sharp |
  • DVD |
  • DV-NC100H

DV-NC100H. Cover, Contents, , Laser beam safety precautions, Important safeguards and precautions, Standard notes for servicing, Preparation for servicing, Operating controls and functions, Cabinet disassembly instructions, Electrical adjustment instructions, Firmware renewal mode, Troubleshooting, Block diagrams, Function indicator symbols, Main Schematic diagram 1 9. - Sharp DVD Service Manual (repair manual). Page 34

Read Sharp DV-NC100H Service Manual online

1-10-12
H9741TS
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?
Page of 48
Display

Click on the first or last page to see other DV-NC100H service manuals if exist.

Random: