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4. TROUBLE SHOOTING
2V8_VMEM
R208
0
1
R211
0
13MHZ
4
MIDI_RST
30
ADD00
31
RD
29
MIDI_CS
5
28
WR
3
MIDI_IRQ
27
DATA08
26
DATA09
25
DATA10
24
DATA11
23
DATA12
22
DATA13
21
DATA14
20
DATA15
C220
R228
6
3.3K
1000p
9
C227
0.1u
32
7
C230
0.1u
8
SPK+
SPK-
R215
REC_P
12
C228
10p
R216
REC_N
12
11
CLK1
HPOUT_R
10
_RST
C215
HPOUT_L
R212
0.01u
A0
33K
12
EQ1
_RD
_CS
13
EQ2
NC
_WR
R213
82K
_IRQ
14
EQ3
D0
2
D1
LED
19
D2
MTR
D3
U204
D4
YMU762
17
D5
SPOUT1
D6
D7
PLLC
SPOUT2
18
3V3_VMIDI
C222
VREF
SPVDD
47p
15
IOVDD
VDD
C229
0.1u
16
VSS
SPVSS
2V8_VMEM
U203
NLAS4684MR2
C217
1
10
V+
NO2
39p
2
9
NO1
COM2
3
8
COM1
IN2
4
7
IN1
NC2
5
6
NC1
GND
C226
10p
C231
10p
Circuit Diagram 4-16
Figure 4-22
C216
390p
SPK+
SPK+
SPK-
SPK-
C223
47p
Circuit Diagram 4-15
C218
47p
C224
C225
VA201
10p
10p
AVL14K02200
SPK_SEL
R217
100K
- 64 -
U203
R217
C223,C222
C229
C230
C206
U202
Figure 4-23
CN210
REC_SPK-
1
REC_SPK+
2
SP201
SP202
VA202
AVL14K02200
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