Toshiba RD-X V45KB, Service Manual

Page: 39 / 135

1-11-16 E439ATR
Yes
F
Check the line between Pin(73,74) of IC1506 and
audio terminal (JK1504), and service it if defective.
Are the audio signals outputted to the specific
output terminal?
Are the audio signals outputted to the audio
terminal (JK1504)?
Are the audio signals outputted to the audio
terminal (JK2001)?
Yes
IC1506 73,74PIN AUDIO-OUT 1 (AV1)
IC1506 71,72PIN AUDIO-OUT 2 (AV2)
Are the audio signals outputted to each pin
of IC1506?
No
No
Check the line between Pin(71,72) of IC1506 and
audio terminal (JK2001), and service it if defective.
No
Check the AL+5V(2) , AL+9V
line and service it if defective.
Replace IC1506
Yes No
Is 5V voltage supplied to Pin(27,29,47,63) of
IC1506?
Is 9V voltage supplied to Pin(75) of IC1506?
Check the line between Pin(3,13) of IC1501 and
Pin(4,50) of IC451, and service it if defective.
Check the circuit of AL+5V, P-ON+5V and
P-ON+9V, and service it if defective.
Is the 5V voltage supplied to Pin(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(74,76)
of IC451?
Is the audio signal inputted into Pin(81,82) of
IC1506?
Is the audio signal inputted to Pin(4,50) of IC451?
Yes
Yes
Yes
Yes
No
No
No
No
No
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(74,76) of IC451 and
Pin(81,82) of IC1506, and service it if defective.
Replace IC451.