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5-9.
SCHEMATIC DIAGRAM - MAIN Section (4/4) -
1
2
3
4
MAIN BOARD (4/4)
A
R1452
100
B
1.7
25
26
27
28
C
29
>009S
30
31
MAIN
32
BOARD
(3/4)
33
(Page 36)
34
35
C564
36
220
D
6.3V
C502
100
>005S
13
10V
14
MAIN
RC_IN0
BOARD
15
C519
0.1
(2/4)
16
(Page 35)
KEY_IN0
E
C521
0.1
C1409
KEY_IN1
C505
0.1
F
C509
0.1
R541
100k
C501
100
10V
G
R545
10k
XM_PWR
R512
100
R548
R501
10k
100
H
R521
100k
EN_SYS
R682
100k
ECO
USB_OVR
I
C510
0.1
C506
0.1
REMOTE_1K
J
R660
100
USB_ON
C511
0.1
C507
0.1
R503
0
K
I2C0_SCL
CL501
CL502
R504
100
I2C0_SDA
I2C1_SCL
CL503
CL504
I2C1_SDA
R540
33k
RE_IN0
RE_IN1
L
RC_IN1
R1369
R1428
M
R1367
10k
0
1.2k
3.4
0
Q1308
LTA043ZUBFS8TL
3.3
BUFFER
N
REMOTE_1K
RC_IN0
>008S
DMU
MAIN
DPU
BOARD
(2/4)
(Page 35)
O
WX-850BT/900BT/900BTM
• See page 31 for Waveforms. • See page 41 for IC Block Diagrams. • See page 44 for IC Pin Function Description.
5
6
7
8
9
IC501
IC504
RESET SIGNAL GENERATOR
IC501
BUFFER
R1435
BU4228F-STR
IC504
1k
74LVC1G17GW-125
1
4
3.3
GND
VOUT
1
5
3.4
3.4
2
3
1.7
NC
VCC
VDD
CT
2
13.333MHz
C559
R567
0.0033
3
4
1.8
0
GND
R571
0
C523
0.1
C560
C517
R513
47
0.1
100
R680
R681
100
100k
R563
R562
R684
R572
10k
10k
0
100k
R551
1k
R549
100k
R554
100
6
R520
2.2
100
R555
100
R507
0
CL509
0
89
BSCANP
3.4
90
PVcc
CL507
(1.8)
91
PARADISSO_BCK
92
CL508
NC
93
Vss
94
(900BT: US, CND)
SYNC_ON
1.3
95
R525
Vcc
100
3.4
96
XM_PWR
0
97
TRST
R542
100
0
98
TDO
R509 100
3.4
99
TDI
R502 100
R546 10k
3.3
100
TMS
R547 10k
0
101
TCK
102
Vss
103
R522
CL1333
NC
100
3.4
104
EN_SYS
1.3
105
R550
Vcc
0
3.4
106
PWR_ECO
107
Vss
3.4
108
USB_OVR
R1433
R524
3.4
109
0
100
PVcc
110
USB_ON2
R523
111
R516
100k
USB_OVR2
100
3.4
112
BT_PWR
113
R517
CL1335
NC
100
3.4
114
BT_RST
0
115
REMOTE1K
116
Vss
0
117
NC
R578
100
3.4
118
USB_ON
1.3
119
Vcc
120
CL1334
NC
121
Vss
3.3
122
RE_ON
3.4
123
PVcc
(0)
124
R534
2.2k
MEC_DSW
3.4
125
I2C0_SCL
R535
2.2k
3.4
126
I2C0_SDA
R505
0
3.3
127
I2C1_SCL
R506
100
3.3
128
I2C1_SDA
R538
2.2k
3.4
129
NC
R544
R539
2.2k
3.4
130
33k
R510
NC
1k
0
131
RE_IN0
0
132
RE_IN1
R511
C503
C504
1k
0.01
0.01
D501
RB751V40,115
R553
100
R1429
0
R558
100k
3.4
R1370
10k
0
7
Q1307
LTA043ZUBFS8TL
3.3
BUFFER
R1368
1.2k
D1308
C1353
R1040
R565
R1361
DZ2J06800L
0.1
18k
470
5.6k
D502
RB751V40,115
R1395
C1361
0.001
0.1
R1394
C518
C522
8p
8p
X501
48MHz
Note 1: IC503 on the MAIN board cannot replace with sin-
10
11
12
13
14
C528
C533
10p
R1473
15p
0
C524
10p
C531
12p
X502
X503
32.768kHz
C529
C570
R568
C500
C1410
C540
0.1
2.2
0
1000p
2.2
R666
0
5
R643
100k
44
(3.3)
LRCK_INT
43
3.4
R644
100
DEBUG_TX
FB501
42
1.7
SYNC_OUT
41
(0)
R587
100
MEC_EJECT
R621
1k
40
0
LCD_DO
39
3.4
PVcc
R628
1k
38
0
LCD_CE
37
CL529
NC
36
Vss
R623
1k
35
0
LCD_CLK
34
1.3
Vcc
33
1.4 (0.9)
DEC_SDIN_CH0
32
(1.3)
DEC_SDOUT_F
31
Vss
30
(1.7)
DEC_LRCK_IN
29
(1.7)
DEC_BCK_IN
28
0
BEEP
27
(0)
BSIF_DO
26
(3.3)
BSIF_LR
CL512
25
3.4
PVcc
24
(0)
CL539
IC503
BSIF_BCK
23
Vss
AUDIO DSP,
22
0 (0.3)
JL532
CD_SDI
SYSTEM CONTROLLER
21
1.3
IC503
Vcc
R7S7200032CFP-A
20
(0)
R627
100
CD_SDO
R634
100
19
3.4 (3.2)
CD_XCCE
18
Vss
R625
100
17
(3.3)
CD_BUSCLK
16
(0)
BSIF_ST_REQ
R533
0
15
(3.4)
DSP_SSTBY
14
(3.4)
R630
100
DSP_RST
13
(0)
DEC_INT
12
(0)
R528
0
BSIF_GATE
11
3.4
PVcc
10
3.3 (0)
CD_ZDET
9
Vss
8
0 (3.4)
R683
0
DEC_XMUTE
7
1.3
Vcc
6
(2.9)
SP_DATA
AMPSTB
5
(3.4)
SP_CLK
AMP_MUTE
4
3.4
R638
100
SERVO_ON
BT_MIC_DET
3
3.4
2
3.4
1
3.4
R616
0
R559
100k
R561
100
R652
100
R649
100
R642
100
R614
100k
R615
100k
R612
C1563
C545
100
0.01
1
R601
R602
JL522
100
100
IC502
JL523
R1481
100
SERIAL FLASH
IC502
R611
MX25L3235EM2I-10G-A10
R610
100
100
0
1
8
3.4
0
CS
VCC
2
7
SO/SIO1
HOLD/SIO3
3
6
0
WP/SIO2
SCLK
4
5
R600
R665
GND
SI/SIO0
100
100
JL529
Note 2: When IC502 on the MAIN board is replaced, the
gle. When this part is damaged, replace the complete
mounted board.
37
37
15
16
17
18
DEC_BCK_IN
0.1
>006S
18
19
MAIN
20
BOARD
(2/4)
(Page 35)
C546
0.1
C550
0.1
C551
0.1
C547
0.1
C548
0.1
R526
C549
100
0.1
LRCK_IN
MEC_EJECT
CL535
LCD_DATA
CL536
LCD_CE
CL537
LCD_CLK
R662
10k
R629
100
DEC_SDIN_CH0
R622
100
R552 10k
DEC_SDOUT_F
R1448
100
R631 10k
DEC_LRCK_IN
R632 10k
DEC_BCK_IN
R557
100
BEEP
R624
100
BSIF_DO
R633
10k
BSIF_BCK
R646 10k
CD_SDO
JL531
CD_SDI
JL533
CD_XCCE
JL534
CD_BUSCLK
R635
100k
BSIF_ST_REQ
DSP_SSTBY
DSP_RST
DEC_INT
BSIF_GATE
CD_ZDET
DEC_XMUTE
R647
100k
SP_DATA
R648
100k
SP_CLK
SERVO_ON
R592
100k
R639
100
STB
R640
47k
R650
100
AMP_ATT
R641
100k
R637
100k
R651
100
ATT
FB504
MEC_SELFSW
>001S
BUS1
BUS2
MAIN
BOARD
(1/4)
(Page 34)
R626
100k
R656
100
JL527
R603
100
JL525
R604
100
JL524
destination setting is necessary. Refer to "DESTINA-
TION SETTING METHOD" on page 5.
WX-850BT/900BT/900BTM
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