WX-7700MDX
38
38
5-15. SCHEMATIC DIAGRAM – MAIN Board (1/4) –
•
See page 52 for Waveforms.
•
See page 55 for IC Block Diagrams.
D370
L4
C200
IC503
IC504
R10
C24
C33
C26
R11
C39
R17
C31
R16
R15
R31
C14
C15
D1
R7
C16
R508
C521
C519
C518
R507
C514
C526
C520
C522
C529
C527
C528
C513
C507
C506
C512
R504
C504
X500
R500
R502
FB502
R106
C103
C104
R105
R107
C106
C107
C532
IC501
R103
R102
C101
C100
C112
R113
R112
C109
C113
C203
R203
R202
C202
R204
C201
R201
R200
C105
R104
C102
R101
R100
R110
R111
C110
C111
R114
C208
C206
R208
R209
C207
C205
R205
R206
R207
C204
R108
R109
C540
C535
C536
IC502
R239
R141
C138
C233
R240
R142
C139
C234
R143
R241
C235
C140
R144
R242
C511
C505
C538
C539
C501
C502
C517
R506
FB501
C500
C534
R373
C530
C28
D373
C373
C374
C371
Q376
R370
Q375
R374
C377
C376
C375
CNP370
L5
IC2
R8
R9
C30
C533
C25
C29
C19
C17
C18
R14
D371
C537
C108
C531
D372
C508
C509
IC200
IC101
IC100
Q501
Q500
Q372
Q373
Q374
C32
R13
Q2
R12
R20
R21
C525
TU1
R505
R509
R510
FB503
C523
C524
R511
C541
FB509
FB504
R512
C542
C335
C336
C334
FB507
FB505
FB506
FB508
CN4
C34
MA8056-H
22p
TC7SET08FU
TC74VHC157
6.8k
0.047
10
16V
4700p
100k
0.47
22k
0.047
100
100
0
100
16V
0.1
MA8056
-H
1k
0.1
470
100p
100p
100p
1k
0.1
0.1
1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
1.5M
0.1
16.9344MHz
2.2M
560
47k
10
16V
10
16V
6.8k
10k
680p
22p
47
16V
NJM2370U33
6.8k
10k
680p
22p
10
16V
6.8k
10k
22p
100p
10
16V
6.8k
10k
680p
47k
680p
10k
10k
680p
47k
680p
10k
10k
10k
10k
680p
680p
47k
100p
680p
10k
10k
22p
680p
47k
6.8k
10k
10
16V
10k
10k
0.01
100
16V
0.1
NJM2370U33
3.9k
3.9k
220p
220p
3.9k
3.9k
220p
220p
3.9k
3.9k
220p
220p
5.6k
5.6k
10
16V
10
16V
0.01
0.01
0.1
0.1
1000p
10k
1
0.1
1k
0.1
1
MA111
100
16V
0.01
0.01
2SC2712
470
2SB1449R/S-DL
4.7k
100
16V
0.1
0.01
30P
BA00ASFP
33k
5.6k
0.1
0.1
0.022
1
100
16V
100
16V
0.1
0
MA111
1
100p
22
20V
MA8068-L
18p
18p
NJM4580V
NJM4580E
NJM4580V
XN1A312
XN1A312
XN1A312
2SD1802FAT
XN1211
0.1
0
2SD1664
47k
0
0
100p
TUX-020
470
470
1k
1000p
68p
330
22p
330
15p
47p
100p
100p
2P
18p
A1
A2
A3
A4
A5
A6
A7
A8
B1
B2
B3
B4
B5
B6
B7
B8
B9
C1
C2
LIMIT
S
TP
XR
ST
R
ED
Y
DSPS
I
X
LAT
DSPSO
X
M
ST
TSCK
SELF_SW
PACK
TSTB
RFOK
EJECT
LOAD
PH3
PH2
D_SW
PH1
STB
A0
CD_DATA
CDM_ON
SEL_R
SE
L_GND
S
EL_L
XRST
XS24
CD_ON
DSPCK0
TUN_ON
TSO
TSI
2Y
1Y
1Y
2Y
XS24
MD_LRCK
CD_LRCK
CD_LRCK
MD_BCK
CD_DATA
MD_DATA
SEM
MPX
VSM
EE_DATA
EE_CLK
384FS
384FS
A
A
512FS
AA1
A
A2
AA3
AA1
AA2
AA3
AA4
AA5
FR
RR
SUB
RL
FL
EM
PH IN
AA
4
AA5
DSP_ON
IDA
ICK
GND
MPX
S-METER
GND
VDD(5V)
FM ANT IN
AM ANT IN
ANT GND
FM AGC
VCC 8.5V
SW SHIFT
AM DET
RDS
DAT IIC
CKL IIC
DAT-EEP
CKL-EEP
BU5V
LIMIT
D_5V
D_GND
DR_6V
DR_6V
DR_GND
DR_GND
A_5V
A_GND
MAIN
GND
NCO
EMPH
CD_RST
RFOK
A0
TSTB
STB
PACK
SELF_SW
TSCK
PH1
D_SW
PH3
LOAD
EJECT
384FS
BCK
LRCK
(CHASSIS)
+3.3V
REGULATOR
LOW-PASS
FILTER
LOW-PASS
FILTER
LOW-PASS
FILTER
REGULATOR
+8.5V
+3.3V REGULATOR
B+ SWITCH
B+ SWITCH
-1
-2
-1
-2
-1
-2
-1 -2
REGULATOR
+5V
Q372
REGULATOR CONTROL
SWITCH
REGULATOR CONTROL
SWITCH
REGULATOR
Q375,376
+6V
REGULATOR
+5V
CD CLOCK SWITCH
CD/MD
SELECTOR
D_DATA
PH2
TDSPSI
TDSPSO
(TUNER UNIT)
ANT
10mH
10mH