Pa Unit (1) - Icom IC-910H Service Manual

12-3 PA UNIT (1)

PA UNIT (1)
VPA
UHF TX:9.07
other :0
Q656
CPH3404
VHF TX:0.684
UHF TX:0.729
C691
0.001 other :0
UVBB
R151 R150
EVN-2ACA00B23
470
UT9L
C167
0.001
R650
EVN-2ACA00B23
R651
VCC
470
PAHV
VT9V
VYGR
VHF TX:9.1
other :0
0
Q501
2SK302
R503
C524
RV-152
15p
C506
C504
0.001
33p
W557
R504
RV-143
L501 W559
LS-164
W558
C503
100p
VHF TX :5.90 C507
VHF MAIN-RX:4.47 0.001
other :0
C505
C525
33p
15p
J501 Q502
P501
2SK302
to MAIN
V MAIN
unit J51
R501 R502
560
1k
VHF TX:6.70
other :0
C501 C502
VHF TX:0
0.0047 0.0047
VHF RX:5.25
other :0.13
BAND
L503 0.47 H
D501 MA77
VHF SUB:4.65
C518
other :0 560p
D508 MA77
D520 MA77
J510 D507
P510 MA77 D509 MA77
to MAIN VSUB
unit J651
Q506
VHF SUB :5.44
R520 DTC144EU
TX(except above):0
1k
RX(except above):0.131
Q505
DTC144EU
VUMS5
Q508
C542
DTC144EU
0.0047
14V C595 0.001
J504 EP565
EP562
VUTP VUTP C598
16
VTU1 VTU1 0.001
15
14PV 14PV
14
GND GND
13
VT9V VT9V
12
11 HV HV
VR9V VR9V
10
to MAIN C918 C616
VATT VATT
9
0.001 47p
unit J1301 UTU2 UTU2
8
GND GND
7 C573
6 VPRI VPRI
C618 0.001
BAND BAND
5 47p
VTU2 VTU2
4
ICL ICL
3
ICH ICH
2
1 NC1
C912 0.001
C920
0.001
C913 0.001
C914 0.001
C916 0.001
C921 0.001
L510
HF50ACC322513-B EP517
5V
5VL
C198 C83
0.001 47p
C922
L517
0.001 2.2 H
4.84
C578
0.001
5V_L510
6
R584 C580 C582
L621
33p
47nH 39 0.001
1 4
C581 R585
IC502
2 3 5 0.001 18
PC2710
R537 R586 L581
R583 R536
270 270 82nH
150 150
J503
from PLL 144M 1Lo
unit J251 L620
C620 68nH C621
22p 27p
C658
15p
C657
C656 15p
22p C659
50p
VHF TX:0.677
other :0
R658 R657
1k 1k
VHF TX:1.329
UHF TX:1.379 Q658
other :0 CPH3404
L651
EXC-ELDR25C
Q650
2SD1585K
VARISTOR-C BOARD
C694
C690
0.001 R656
C651 0.001
33
0.001
J651
D680 C650
C649 V-C1 V-C2
1SS301 0.001 0.001
C652 0.001
C653 0.001
J652
VHF TX:9.01
Q653
other :0
C509 DTC114EU
22p V-A2
C931
0.001 0.001
R507
100k
Q654
DTC114EU
VHF TX:0.58
other :0
C932
R513
0.001 C512 C514
NTCCM16083NH221KC
2p 0.5p
D502
1SV286 L502
R516 C513
LS-145
47 220p R509
C511
100k
0.001
L533 D503
92nH
C521
1SV286
R506 R514
0.001
100k 120
C520
R508
0.001 22
C544 C541
VHF TX:0
0.001 0.001
other :5.75
R546
EP566
4.7k
C572
0.001
VHF SUB:4.48
other :0
C570 C614
0.001 47p
C571
0.001
C631
100p
C632
47p
L632
VHF TX:5.60
0.12 H
other :0
C619
C575
47p
0.001
13.0
R587
680
C588
C84
R588 R589 0.001
C538
0.001
1k 47
0.001
R541
L521
47
LS-228
VHF TX:0
other :5.56
D518 R539
MA77 560
C589
C579 0.0047
0.001
C587
D516 0.0047
MA77
L519 L520 L600 L601
39nH 39nH 39nH 47nH
R540
D517
2.2k
MA77
C584 C600 C601
10p 3.5p 2.5p
R538
C583 C585 C602 C603 C604
3.3k
20p 12p 22p 39p 24p
12 - 3
VHF TX:0.672
13.80
other :0
L653 Q651
LA-263 2SC5125
C665
R652
56p
C667 C684 C668 47
68p 68p 68p
R653
10
C669 C677
L652 L654
C685 120p 120p
LW-9 LA-263
68p
Q652
C670
2SC5125
C661 15p
R654
56p
47
L655
LA-179
C696
C697 C663 C664
0.001
47 68p 68p
C679
L656
220p
LW-33
D1
J653 C688
MA29B
0.0047
C680 C681
C654 C655
0.047 2.2
0.001
0.001
VARISTOR-B BOARD
C682
220p
C687
C689
220p 0.1
L658
EXC-ELDR25C
D1
MA29B
VARISTOR-A BOARD C675
0.001
IC501
PC2709T
2 3 5
C515 C517 C606
R563
0.3p 2.5p 0.001 5.6
1 4
6
R510
VHF TX:4.62
100k
L506
other :0
1 H
R562
L504 820
C906
D504 92nH
C522 0.001
0.001 1SV286
L507
C903
2.2 H
470p Q503
XP4312
3 4
C526 C529
VHF TX:9.13 0.001
0.01
other :0 2 5
1 6
C904
C907
470p
0.001
C905
470p
L512
C545 2.2 H
0.001
L513 C549 C552
92nH 0.5p 0.75p
C609
15p
C547
C550
15p
15p
EP561 EP563
D510
D511
1SV217
1SV217
C917 C596
0.001
0.001
EP567
C566 C567
0.001 0.001
C608 5p
L528
R631
0.15 H
47
C612 5p
C610
12p
C607 33p
L529
68nH
2.75
C613 10p
Q511
2SK1740 R543
470
C611
15p
C592
0 0.001
W513 W520
R544
470
L522 W521
617PT-1026
C591
C593
0.001
0.001
Q512
2SK1740
R545
470
C678 10p
L657
C676 10p
LA-300
RL700
AE5349 L721
C674 LA-177
C673
47p
2p
C722 1.5p
R711
C671 C672 56
15p 15p
R713
C721 C723
56
R710
15p 33p
56
Q700
12.56
XP4312
Q702 2SB1132
4 3
5 2
C701
R702
0.001 C703
6 1
0.001 68k
VHF TX:12.83
C683 C686 PREAMP ON,VHF TX:12.47
470 470 other :0 PREAMP ON,UHF TX:11.81 L701
HF50ACC322513-B
PREAMP ON,RX :11.81
other :12.47
13.73
R731
150k
2.41
IC701
PQ20VZ51
VIN 1
VC 2
VO 3
VADJ 4
GND 5
R732
1k
12.56
C718
470p
1.256
R712
100
C641 C648
C644 C645
2.5p 0.5p 2.5p
0.5p
C712
C642 0.001 C711
C646
220p 0.001
0.001 R573
R531 820
R641 R642
820
100k 100k
L642
92nH
L641
D641 C643 C537
92nH
1SV286 0.001 0.001
C543
VHF TX:0
0.001
VHF TX:0
other :8.64
R528 other :1.89
100k
R525
27
Q507
3SK177
L560
C554 92nH
12p
R556
1.8k
C561
C560
R527 100p
15p
27k
D512
R524
C555 100k 1SV217 C559
D514
0.001 0.001
HSM88AS
D513
1SV217
R529
100k
EP568 EP564
VHF TX:0
C568 other :0.902
C569 C597
0.001
0.001 0.001
VHF RX(VHF ATT ON) :1.532
ATT OFF and except above :0
VHF TX:0
other :9.02
VHF ATT OFF :0
VHF TX(VHF ATT ON):0.87
other :4.35
MEASUREMENT CONDITIONS
VHF:144MHz,FM
UHF:440MHz,FM
DIGITALMULTIMETER
Unit:Volt
R722 R715 C715
C731 1k 47k
100p
100p
D721
R721 C730
HSU88
68 6p
CHASSIS J1
L722 L723
[VHF ANT]
W710
LA-177 LA-176
C726 3p
C734
C724
2p
1.5p
R723
C725 C728 C729 D720
82
18p 10p 6p HSU88 L720
1812CS.122XKBC
C732 C733
R724
100p
1k 0.001
C704
R716 47k
0.1
VFOR
VREF
Q703
C716 100p
DTC114EU
R703
VPRI
680 VHF RX(VHF ATT ON) :12.55
C707 ATT OFF and except above :0
R725
470p
6.8k
VT9V
14PV
R734
8.2k
C708 C706
R726
0.001 470p 3.3k
PRV
R733
680
C719
470p
C717
470p C710
0.001
L710 R718
1.2 H 470
5 4 3
D710
1SV265
1 2
C713
0.001
L711
1.2 H
R717
470
PA UNIT (2)
VPA
VPA
C562 C563
0.001 0.001
UVBB
UVBB
D515
1SV237
UT9L
UT9L
Q510
13.80
DTC144EU
VCC
C564 VCC
R530
0.001
470
PAHV
PAHV
C565 VT9V
0.001 VT9V
VYGR
VYGR
VUMS5
VUMS5
14V
14V
UTU2
UTU2
Q515 ICL
ICL
2SC2712
ICH
ICH
5V
5V
EP911
HV
HV
C714
VREF
VREF
0.001
VFOR
VFOR
BAND
BAND
PRV
PRV
5VL
5VL
D532
5V_L510
1SS355 5V_L510
C940
0.001
R534
1k
VHF RX(VHF ATT ON) :3.64
ATT OFF and except above :0