![](/images/new-backgrounds/1147473/147473251x1.webp)
7521Plus / N N/B MAINTENANCE
8.10 AUDIO FAILURE
No sound from speaker after audio driver is installed.
AUDIO IN
VA
R27
+12V
L13
J4
+ |
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| C321 |
L26 | C39 | + | R50 | U4 |
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| ||
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| D2 |
L10
INTERNAL MIC1 |
SH16 |
J509 |
SH6
C59 + C48 +
R42 R41
C66
L506 | EXT MIC. |
C75 | L505 |
SH16
U24
ASDIN0 8
ASDOUT 5
SH16 | 21 | C61 |
| 23 | C56 |
|
| |
U5 | 24 | C55 |
|
LINE_IN/LR504
LINE_IN/RR502
R503
R505
L503 J503
L502 LINE IN
L501
J512
SIS
630S
ASYNC 10
CS4299 | CDROM_R | C63 |
|
| |
20 |
|
|
| ||
| CDROM_L | C73 |
|
| |
18 |
|
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| ||
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| |||
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|
| |
19 |
| CDROM_COMM | C64 | ||
2 |
|
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| |
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| |
|
|
|
|
|
| R35 |
| R60 |
R55 | R40 |
R46
CDROM_RIGHT CDROM_ LEFT
CDROM_GND
SH13
CDROM CONNECTOR
U31
W83626F
24.576MHZ
R179 L51 R75
C221
CODEC XIN
125