"F"
No
Is the audio signal supplied to Pin(4,50) of IC451?Check the line between Pin(3,13) of IC1501 and
Pin(4,50) of IC451, and service it if defective.
Yes
Is the 5V voltage supplied to Pin(16,32,35,36,46,55) of No
Check the circuit of AL+5V, P-ON+5V and
IC451, or the 9V voltage supplied to Pin(69) of IC451?
P-ON+9V, and service it if defective.
Yes
Is the serial data and the clock signal supplied to NoCheck the line between Pin(37,38) of IC451 and
Pin(37,38) of IC451?Pin(71,72) of IC501, and service it if defective.
Yes
NoCheck the line between Pin(53) of IC451 and
Is the "L" pulse inputted into the Pin(53) of IC451?
Pin(28) of IC501, and service it if defective.
Yes
Is the audio signal outputted to Pin(74,76) No
Replace IC451.
of IC451?
Yes
Is the audio signal inputted into Pin(2,12) of NoCheck the line between Pin(74,76) of IC451 and
IC1508?Pin(2,12) of IC1508, and service it if defective.
Yes
Is the audio signal outputted to Pin(14,15) of NoIs approximately 5V voltage supplied to Pin(16)
IC1508?of IC1508, or approximately -5V voltage supplied to
Pin(7) of IC1508?
Yes
No
Check the AL+5V line and the AL-5V line, and
service it if defective.
Is the audio signal inputted into Pin(6,12) of NoCheck the line between Pin(14,15) of IC1508 and
IC1518?Pin(6,12) of IC1518, and service it if defective.
Yes
Are the audio signals outputted to each pin
of IC1518?
No
Is 12V voltage supplied to Pin(2,4) of IC1518?
IC1518 21,25PIN AUDIO-OUT 1 (AV1)
IC1518 22,26PIN AUDIO-OUT 2 (AV2)YesNo
Replace IC1518.Check the AL+12V(1) line
Yes
and service it if defective.
Are the audio signals outputted to the specific
output terminal?
Are the audio signals outputted to the audio NoCheck the line between Pin(21,25) of IC1518 and
terminal (JK1502)?audio terminal (JK1502), and service it if defective.
Are the audio signals outputted to the audio NoCheck the line between Pin(22,26) of IC1518 and
terminal (JK2001)?audio terminal (JK2001), and service it if defective.
1-10-18E9BA1TR |
ACEC
TOSHIBA
