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
R150
R151
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
C524 R503
RV-152
15p
C506
C504
0.001
33p
W557
R504 VHF TX:0.58
RV-143
other
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
1k 560
VHF TX:6.70
other :0
C501 C502
VHF TX:0
0.0047 0.0047
VHF RX:5.25
other :0.13
BAND
L503 0.47µH
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
EP565
J504
EP562
VUTP VUTP C598
16
0.001
15 VTU1 VTU1
14PV 14PV
14
GND GND
13
VT9V VT9V
12
11 HV HV
VR9V VR9V
to MAIN 10
C918 C616
VATT VATT
9
0.001 47p
unit J1301 UTU2 UTU2
8
7 GND GND
C573
VPRI VPRI
6 C618 0.001
BAND BAND
5 47p
VTU2 VTU2
4
3 ICL ICL
ICH ICH
2
NC1
1
C912 0.001
C920
0.001
C913 0.001
C914 0.001
C916 0.001
C921 0.001
R587
L510
HF50ACC322513-B EP517 680
5V
5VL
C198 C83 C84
47p 0.001
0.001
C922
L517
0.001 2.2µH
4.84
C579
C578
0.001
0.001
5V_L510
C580 6 C582
L621 R584
0.001 33p
47nH 39
1 4
C581 R585
IC502
2 3 5 0.001 18
µPC2710
R537 R586 L581
R583
R536
270 270 82nH
150 150
J503
144M 1Lo
from PLL
unit J251 L620
C620
68nH C621
22p 27p
C658
15p
C657
C656 15p
22p
C659
VHF TX:0.677 50p
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
R656
0.001
C651 0.001
33
0.001
J651
D680
C650 C649 V-C1 V-C2 C654
1SS301 0.001 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
: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
1SV286 C521
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
EP561
C570 C614 C917
0.001
0.001 47p
C571
0.001
C631
100p
C632
47p
L632
VHF TX:5.60
0.12µH
other :0
C619
C575
47p
0.001
13.0
C588
R588 R589 0.001
C538
1k 47
0.001
R541
L521
47
LS-228
VHF TX:0
other :5.56
D518 R539
MA77 560
C589
0.0047
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
From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library
VHF TX:0.672
13.80
other :0
L653 Q651
LA-263 2SC5125
C665
R652
56p 47
C667 C684 C668
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
C697 C696 C663 C664
0.001 47 68p 68p
C679
L656
220p
LW-33
D1
J653 C688
MA29B
0.0047
C680 C681
C655
0.047 2.2
0.001
VARISTOR-B BOARD
C682
220p
C687 C689
220p 0.1
L658
EXC-ELDR25C
D1
MA29B
C675
VARISTOR-A BOARD
0.001
IC501
µPC2709T
2 3 5
C515 C517 C606
R563
0.3p 2.5p 0.001
5.6
1 4
6
R510
R531
VHF TX:4.62
100k L506
820
other :0
1µH
R562
L504 820
C906
D504 92nH
C522 0.001
0.001 1SV286
L507
C903 2.2µH
470p Q503
XP4312
3 4
C526 C529
VHF TX:9.13
0.01 0.001
2 5
other :0
1 6
C904
C907
470p
0.001
C905
470p
L512
C545
2.2µH
0.001
L513 C549 C552
0.5p 0.75p
92nH
C609
15p
C547
C550
15p
15p
EP563
D510
D511
1SV217
1SV217
C596 C555
0.001 0.001
EP567
C566 C567
0.001 0.001
C608 5p
L528
R631
0.15µH
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
W521
L522
617PT-1026
C591
0.001 C593
0.001
Q512
2SK1740
R545
470
C678 10p
L657
C676 10p
LA-300
RL700
AE5349 L721 L722
C673 C674 LA-177 LA-177
2p 47p
C722 1.5p
R711
C671 C672 56 C724
15p 15p 1.5p
R713
C721 C723 C725
56
R710
15p 33p 18p
56
Q700
12.56
XP4312
Q702 2SB1132
4 3
5 2
C704
C701
R702
0.001 C703
6 1
68k
0.001
VHF TX:12.83
C683 C686 PREAMP ON,VHF TX:12.47
R703
L701
470 470 other :0 PREAMP ON,UHF TX:11.81
680
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
C648
C641 C644 C645
0.5p 2.5p
2.5p 0.5p
C712
C642 0.001 C711
C646
220p 0.001
0.001 R573
R642 820
R641
100k
100k
L642
92nH
L641
C643
D641 C537
92nH
1SV286 0.001
0.001
C543
VHF TX:0
0.001
VHF TX:0
other :8.64
R528
other :1.89
R525 100k
27
Q507
3SK177 L560
C554 92nH
R556 12p
1.8k
C561
C560
R527 100p
15p
27k
D512
R524
1SV217
100k C559
D514
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
C730 D721
R721
68 6p HSU88
CHASSIS J1
L723
[VHF ANT]
W710
LA-176
C726 3p
C734
2p
R723
C728 C729 D720
10p 82
6p HSU88 L720
1812CS.122XKBC
C732
R724 C733
100p 0.001
1k
R716 47k
0.1
VFOR
VREF
Q703
C716 100p
DTC114EU
VPRI
VHF RX(VHF ATT ON) :12.55
C707 ATT OFF and except above :0
470p R725
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
1.2µH 470
5 4 3
D710
1SV265
1 2
C713
0.001
L711
1.2µH
R717
470
PA UNIT (2)
VPA
VPA
C563
C562
0.001 0.001
UVBB
UVBB
D515
1SV237
UT9L
UT9L
Q510
DTC144EU 13.80
VCC
VCC
C564
R530
0.001
470
PAHV
PAHV
C565
VT9V
VT9V
0.001
VYGR
VYGR
VUMS5
VUMS5
14V
14V
UTU2
UTU2
Q515 ICL
2SC2712 ICL
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