Icom IC-706MKIIG Service Manual page 77

• PA UNIT
PA
D101 L104 L105
MA77 39nH 4.7uH
P2T8
C115
7p
R107 13.6 V
680
2.1 V
Q101
P101 J101 C113 D104 C102
2SK2854
MA77
PAI 0.1 0.1
D102 R102 0.3 V
MA77 15
MAIN(1)
J231
R106
4.7k
R231
10k
MEASUREMENT CONDITIONS
SUPPLY VOLTAGE: 13.8 V
14.1 MHz USB
DIGITAL MULTIMETER : 50 k‰/V
13.7 V
C231
0.001 W235
Q231
SRFJ7044
L212
EXC-ELDR25C
D481
1SV237
UHF PREAMP ON:2.4 V
J481 C476 C462 C471 6.2 V
P481
0.001 3p 0.5p
VURX
Q453
3SK291
MAIN (1)
J141
0.3 V
LEFT SIDE
10 - 6
J160
R124 C141 L141 L142 L143
0.1uH 0.18uH 0.15uH
560 0.1
HFI
HFI
C161
C145 C147
0.1 GND
6p 3p
L103 C121
GND
6.8nH
0.1
Q121
MXR9745-RT1
J210
C153 C155 C213
15p
47p 0.001
VUI
VUI
C127
GND
0.1
GND
R108
33
C129
0.1
R214 R213
2k 10
R161
100
UHF TX:0.2 V
D261 C265 L262 L263 L264 L265
C261 RX:0 V
STRIP
27p MI407 0.001 LA-253 LA-263 LA-254 LA-243
R261 D291 R269
UM9401F 1k
47
R267
C291
1k
30p
D262 D263
MA742 MA742
C292
12p
D292
UM9401F
D293
1SS355
C244 C245 C246
27p 18p 0.001
STRIP
C421 L407
0.001 W409 82nH
W300 C455 L456
OFF:1.7 V
3p 4.7nH
UHF PREAMP ON:0 V W462
OFF:4.4 V
W301
1.4 V
Q452
DTC114EU
R471
270k
DRIVER
R178 13.7 V
15
13.8 V
L171 Q171
J161 LR-322B C172 SRFJ7044
Q100 0.0068
HFO
MRF1508
HFO
R182
GND 0.68
GND
R166
1
C169 470
HF TX MP1
4.2 V
J211 R183
Q200 C167 0.1
0.68
VUO
MRF1508
VUO
C173
GND Q172
0.068
SRFJ7044
GND
W213
V/U TX R179
4.6 V 15
13.8 V
R201
13.7 V
0.012
D171 D172
DAN202U DAN202U R202
3.3k
R174 R175
10k 10k
R163
1k R162
2k
VHF TX:0.8 V
RX:0 V
R301
L301 D311 D344 L312 L314 L315
C311 10k L313
0.25-1.9-13TL
33p UM9401F MI407 LA-382 LA-383 LA-233 LA-382
C344
Q301
8p
DTC114EU
C312 Q351
L351
C345 DTC114EU
0.001
0.001 0.25-1.9-13TL
R312
D341
C341
100k UM9401F
12p
R302 C329 D342
100 0.001 UM9401F
R352
100
D343
R320
1SS355
4.7k
L352
LW-25
L402 C405 L406
C412 5.6 V C408
0.001 0.001 82nH 0.001 22nH
Q403
VHF PREAMP ON:3.0 V
3SK291
OFF:2.1 V
C407
C414 470p
470p
Q402
1.8 V
0.8 V R423
DTC114EU
220k
VHF PREAMP ON:0 V
OFF:4.4 V
C187
0.68
EP601
W601
W602
EP602
W603
L173 L175
LR-376 LA-262
W604
14V
F592 F591 F593
RL591
C196 0.001 S-N5054 FGB4A S-N5054
JV-12-KT
C197 0.001
C198 0.001
C199 0.001
C200 0.001
C593 0.1 Q591
W572
DTC114EU
EP605 W180
Q501
R205 D591
2SB1132
3.3k DAN202U
8V
Q502
W181
DTC114EU
T8V
Q511 R502
2SA1577 1k
8V
ICL Q514
ICH DTC114EU
PHT8 LPF8
Q512
PHV DTC114EU
T8V
PT8V
R512
Q521 R513
1k 10k
P2T8 2SB1132
R521 47k
Q522 Q513
DTC114EU DTC114EU
R522 1k
LPF9
D231
VFOR
DAN202U
Q531 Q523
2SA1577 DTC114EU
C326 8V
C327 C328
9p 5p 9p
R531 47k
Q532
DTC114EU
R532 1k
T8V
Q533
DTC114EU
R8V
P4T8
Q541
Q542
DTA114EU
DTC114EU
P2R8
LPF8
Q552
DTC114EU
P4R8
LPF9
Q551
8V
DTA114EU
Q573
UFOR
DTA114EU
Q574
2SC4081
THPE
14V
Q575
DTC114EU
T8V
Q576
DTA114EU 8V
R582
47k
D575
DAN202U
CP573
14V
C577
0.1
R576
10k
Q571
2SB1132
D573
CP574
Q572
PR3S DAN202U
2SC4081
P2R8
2MBL R581
1.5k
D574
MA8056
AT13
L361
P4R8
LW-25
TB2V
TB1V
PR4S
J172
HPAO
FILTER
P2
P601
R591
4.7
CP611 CP612 CP613 CP614
J612
J611
ETKY
ETST
L613 2943-666663 ET14
ETE
C627 0.1
C623 0.1
C622 0.1
C621 0.1
J621
HV
2MBL
C688 0.001 8V
8V
GND
THEP
14V
14V
PA
14V
J252
GND
GND
POWS
ESPE
ESPE
ESPO
ESPO
C632 0.1
J641
ESPO
ISPO
ESPE
J651 EP604 P651
ISPO
ESPE
W651 W652
C670 0.1
C682 0.1
C669 0.1
C668 0.0047
C683 0.1
C667 0.0047
C666 0.1
C665 0.1
C664 0.1
C663 0.1
C662 0.1
C661 0.1
J651
TB4V
C685 0.001
TB3V
TB2V
L663 0.82uH TB1V
PR4S
PR3S
STRT
KEY
LPF9
LPF8
MAIN (2)
GND
J401
UREF
R601
4.7k VREF
L622 4.7uH UFOR
L623 4.7uH VFOR
AT13
ICL
ICH
T8V
R8V
C684 0.1 C676 0.1
C680 0.1 C675 470p
C679 0.1 C674 470p
C678 0.1 C673 470p
C677 0.1 C672 470p
J571
FANO
W361 FANE
L571
HF50ACC322513-T
J270
to
144/440MHz ANT
RIGHT SIDE