No sound in the headphones Yes No Is the sound muted? Yes Is the volume set to "0"? Yes Are the signals output from IC4804? (pin 31) (pin 32) No Check around IC4804 and each input signal. No Raise the volume and check the sound again. Cancel muting and check the sound with the headphones again.
No sound from the audio output Yes Are the signals output from IC4804? (pin 13) (pin 14) No Check around IC4804 and each input signal.
B
47 48
Yes Is the flexible cable correctly No Plug the flexible cable in connected between CN4010 correctly and check the and CN7402? sound again. Yes Check around the pinjack.
43 44
Yes Are the signals output from IC4807? (pin 1) (pin 7)
C
No
Check around IC4807.
45 46
Yes Is the flexible cable correctly No Plug the flexible cable in connected between CN4001 correctly and check the and CN7804? sound again. Yes Check around the phono jack.
D
