Table of Contents
Advertisement
4.9 Speaker Trouble
TEST POINT
U203
U203.17
CIRCUIT DIAGRAM
26M_MIDI
13MHz
_MIDI_RESET
ADD00
_MIDI_CS
2V85_VCAM
2V85_VCAM
C228
C229
1u
1u
U203.18
Figure 18
U203
YMU762C-QZ
R210
NA
1
CLK1
HPOUT_R
4
_RST
HPOUT_L
30
A0
31
_RD
_RD
29
_CS
5
NC
28
_WR
_WR
3
_MIDI_IRQ
_IRQ
27
DATA08
D0
26
DATA09
D1
25
DATA10
D2
24
DATA11
D3
23
DATA12
D4
22
DATA13
D5
21
DATA14
D6
20
C222
DATA15
D7
1000p
R218
3.3K
6
PLLC
9
VREF
C224
0.1u
32
IOVDD
7
VDD
8
VSS
- 61 -
4. TROUBLE SHOOTING
Soldering C heck
R211
20K
11
10
C214
0.01u
R212
12
EQ1
33K
13
EQ2
C218
R214
120K
270p
14
EQ3
2
LED
19
MTR
17
SPOUT1
18
SPOUT2
VBAT
15
SPVDD
C227
0.1u
16
SPVSS
C213
SPK
0.1u
SPK_P
SPK_N
Advertisement
Table of Contents
