Kenwood NXR-700 Service Manual page 150

A B C D
NXR-700
PC BOARD
1
CONTROL UNIT (X53-4130-XX) -10 : K,K2 -11 : For service
2
Component side view (J79-0011-09)
R550
3
R551
SPG 2
SPO 1
4
CN3
1
2
DC8
R1
GND
DC8 R204
R6 DC8
50MPU
L6 R201
50MPU
R8 GND
DC8
K5 R7
R10 K4
K3
R11 K2 R9
K1 C405 R211
GND
R12 STB1
C226
GND R218
R13 SR_DATA
GND
SR_CLK R219 C227
R14 GND
R436
5 SR_OE
GND
R15
PTT_TXD_SCM 128
SCM_EN
R437
R16 HOOK_RXD_SCM
GND
1
OCXO_ST_G
R17 R414 C406
PWR_ST_R
OCXO_ST_R
SB
R18 L7
VOLUME_IN
33AUD
R19 33MPU
MIC R407
GND
MIG
35
36
R232
R2
C247 R231
6
R234
38
39
C256
R247
1 8
C263
7
CP26 CP24
C262
4 5 R398
R249
CP25
R250
R455 R251
IC38 IC27
IC28
4 3 4 3 3 4
IC36
5 1 5 1 1 5
C283 C235 C234
R203
8
R302
9
J79-0011-09
10
Ref. No. Address Ref. No. Address
IC4 7J IC22
11
IC6 8J IC23
IC7 5S IC25
IC10 6Q IC27
IC11 4P IC28
IC15 8Q IC29
12
IC16 8R IC30
IC17 6F IC31
IC18 4I IC32
13
14
E F G H
CN56
R390
R202
R198
R208
R210
R215
103
R217
102
C121
C120 R292
C277
108
C463
R131
1 5 109
3 4
IC40
R235
IC37
65
64
144
1
C253 C254
C252
R183
1 16
R473
R472
8 9
CN57
Ref. No. Address Ref. No. Address
8E IC33 6C Q1 7I
9N IC34 6D Q6 9N
9N IC35 7B Q7 9N
8D IC36 8D Q18 8B
8C IC37 6H Q26 8N
9K IC38 8C D1 6R
8H IC39 3I D2 4Q
8I IC40 6E D20 10S
6C IC41 9N D25 5B
I J K
C372
R389
CN1
C166 +
C170
+
C144 C141
GND
CLEAR/
CODE
R70 RXEO
TXI
POW
73
72
R277
R275
AOUTL
R271
R273
R532
R531
9 8
C92 R530
R529
POW
16 1
Q1
PTOA
37
GND
AOUTR AINL AINR
36
DATA IN
C255
ANI KEY
C237
IC31
+ +
R216 R88
L M N O
PC BOARD
CONTROL UNIT (X53-4130-XX) -10 : K,K2 -11 : For service
Component side view (J79-0011-09)
CN2
C104
L12
BC8
BC4
C106
BC2
SCR_PTT
BC1
TXO
RXEI
SCRAMBLE SC
R188 C130
MMUTE
C133
TXANTS_O
SIDETONE
TCTL
ANI
R477 R179
+ +
C445 C215
Q6
Q7
R413 C225
1 5
C408
3 4
IC25
L48
P Q R S
NXR-700
R535
1 E
R76 L4
NC
+ SB
R73
R534
4 SB
+
R82
C109
L3
+
L32
IC11
L33
R108
+
L19
R79
L16
C99
R74
R81
C107
C108
D1
IC10
+
R107
C105
+
+
L15
+
C131
C152
R129 R101
+
+
+
+ C157 C162
CN58
CN59
CN75
D20
CN74
R315
Component side
Layer 1
Layer 2
Layer 3
Layer 4
Foil side
1
2
3
4
5
6
7
8
9
10
11
12
13
14