(2) No sound (Hi-Fi Model)
No sound
YES
Check the Vcc of IC751 Pins 1, 19, 33.Check 5V power.NO
YES
NO
Check the Tuner SiF signal at IC751 Pin 2.Check the Tuner Audio of TU701 Pin 22.
YES
NO
Check the oscillator of IC751 Pins 5, 6.Replace X751.
YES
NOCheck the IIC Clock and Data at
Check the Audio of IC751 Pins 30, 31.IC751 Pins 12, 13.
YES
NOCheck the signal flow from IC751
Check the Audio of IC801 Pins 2, 3.
Pins 30, 31 to IC801 Pins 2,3.
YES
Check the Audio of IC801 Pins 18, 19.NOCheck the IIC Clock and Data at
IC801 Pins 42, 43.
YES
Check the signal flow from IC801
pins 18, 19 to JK901 Pins 1, 3.
3-16 |