User's Manual

37
II.) SOUND DISTORTION
AUDIO BOM
Bill Of Materials September 7,2001 18:09:14 Page1
Item Quantity Reference Part
______________________________________________
1 3 C1,C2,C4 1uF
2 1 C3 2200uF/25V
3 1 C5 10uF/50V
4 2 C6,C7 0.047uF
5 1 C8 100uF/16V
6 1 C9 100uF/25V
7 1 D1 LED
8 2 J1,J3 CON2
9 1 J2 EAR PHONE
10 1 J4 AUDIO IN
11 1 J5 DC IN
12 3 VR1,R1,R2 10K
13 1 R3 33K
14 1 R4 68K
15 2 R5,R6 15K
16 1 R7 130K
17 2 R9,R8 3K
18 2 R11,R10 1(3W)
19 1 R12 680
20 1 S1 SW SPST
21 1 U1 AN7522
Check U1 pin 2, 4 10, 12 is the
voltage output = VCC / 2 . ?
Check U1
CHECK SPEAKER
NG
YES