![background image](http://html.mh-extra.com/html/icom/ic-7800/ic-7800_service-manual-addendum_612348328.webp)
Jul. 2008
79
BPF UNIT
VOLTAGE LINE
Explanatory notes
RX LINE
BPF UNIT (1)
J101
HF OUT-A
to DIGISEL
unit J2
+
-
RL21
FTR-B4CA012Z
C21
0.0047
C22
0.0047
L23
LR-443
C28
0.001
C27
0.001
C29
330p
C30
120p
L24
LR-444
C31
180p
C32
27p
C33
330p
C34
47p
L25
LR-444
C35
180p
C36
27p
C38
330p
C39
120p
C40
0.001
C41
0.001
L27
LR-443
L26
LR-444
+
-
RL22
FTR-B4CA012Z
C25
0.0047
C26
0.0047
D21
MA2S111
L21 47
L22 47
+
-
RL1
FTR-B4CA012Z
C2
0.0047
C1
0.0047
+
-
D1
MA2S111
RL2
FTR-B4CA012Z
C5
0.0047
C6
0.0047
L2 47
L1 47
R1
47k
R3
0
C7
0.0022
C8
0.0027
L3
3.3
L5
3.3
C9
0.0012
C10
0.0022
L4
3.3
L6
3.3
C4
0.0047
C24
0.0047
B0A
B1A
+
-
D900
MA2S111
RL900
FTR-B4CA012Z
C900
0.0047
C907
0.01
L900
10
C908
0.1
R900
47
EP900
C909
0.0047
C910
0.01
R911
100
C927
5p
Q901
2SC5551
L906
100
C922
0.1
R901
1k
C923
0.1
R902
5.6k
R904
15
R903
330
R905
330
EP901
+
-
RL901
FTR-B4CA012Z
C912
0.0047
D901
MA2S111
+
-
RL902
FTR-B4CA012Z
C914
0.0047
D902
MA2S111
C915
0.01
R908
47
C924
0.1
L907
10
EP902
C916
0.0047
C917
0.01
R912
100
R913
1
C928
5p
R910
5.6k
Q903
2SC5551
L909
100
C926
0.1
R909
1k
C925
0.1
Q900
DTA114EU
Q902
DTA114EU
L905
LR-498
L908
LR-498
EP903
C918
0.01
+
-
RL903
FTR-B4CA012Z
C919
0.0047
D903
MA2S111
C921
0.0047
J102
6m OUT-A
to RXPLL-A
unit J1201
J601
HF OUT-B
6m OUT-B
to DIGISEL
unit J502
J602
to RXPLL-B
unit J1201
+
-
RL51
FTR-B4CA012Z
C52
0.0047
C51
0.0047
C58
330p
C60
39p
L53
LR-445
C57
560p
C59
330p
L54
LR-446
L55
LR-446
C62
330p
C61
56p
C65
330p
C66
56p
C64
47p
C63
330p
+
C67
330p
-
D51
MA2S111
C68
39p
L56
LR-446
L57
LR-445
C70
330p
C69
560p
RL52
FTR-B4CA012Z
C55
0.0047
C56
0.0047
B2A
L52 47
L51 47
C54
0.0047
+
-
RL81
FTR-B4CA012Z
C82
0.0047
C81
0.0047
C88
390p
C90
33p
L83
LR-447
C87
560p
C89
180p
L84
LR-458
L85
LR-458
C92
82p
C91
15p
C95
82p
C96
15p
C94
56p
C93
120p
+
C97
180p
-
D81
MA2S111
C98
33p
L86
LR-458
L87
LR-447
C100
390p
C99
560p
RL82
FTR-B4CA012Z
C85
0.0047
C86
0.0047
B3A
L82 47
L81 47
C84
0.0047
+
-
RL111
FTR-B4CA012Z
C112
0.0047
C111
0.0047
C118
150p
C120
27p
L113
LR-447
C117
330p
C119
150p
L114
LR-448
L115
LR-448
C122
120p
C121
27p
C125
120p
C126
27p
C124
10p
C123
150p
+
C127
150p
-
D111
MA2S111
C128
27p
L116
LR-448
L117
LR-447
C130
150p
C129
330p
RL112
FTR-B4CA012Z
C115
0.0047
C116
0.0047
B4A
L112 47
L111 47
C114
0.0047
+
-
RL141
FTR-B4CA012Z
C142
0.0047
C141
0.0047
C148
220p
C150
22p
L143
LR-449
C147
220p
C149
100p
L144
LR-450
L145
LR-450
C152
39p
C151
33p
C155
39p
C156
33p
C154
22p
C153
82p
+
C157
100p
-
D141
MA2S111
C158
22p
L146
LR-450
L147
LR-449
C160
220p
C159
220p
RL142
FTR-B4CA012Z
C145
0.0047
C146
0.0047
B5A
L142 47
L141 47
C144
0.0047
+
-
RL171
FTR-B4CA012Z
C172
0.0047
C171
0.0047
C178
68p
C180
47p
L173
LR-451
C177
220p
C179
47p
L174
LR-452
L175
LR-452
C182
33p
C181
33p
C185
33p
C186
33p
C183
82p
+
C187
47p
-
D171
MA2S111
C188
47p
L176
LR-452
L177
LR-451
C190
68p
C189
220p
RL172
FTR-B4CA012Z
C175
0.0047
C176
0.0047
B6A
L172 47
L171 47
C174
0.0047
+
-
RL201
FTR-B4CA012Z
C202
0.0047
C201
0.0047
C208
47p
C210
18p
L203
LR-453
C207
180p
C209
47p
L204
LR-454
L205
LR-454
C212
22p
C211
15p
C215
22p
C216
15p
C213
47p
+
C217
47p
-
D201
MA2S111
C218
18p
L206
LR-454
L207
LR-453
C220
47p
C219
180p
RL202
FTR-B4CA012Z
C205
0.0047
C206
0.0047
B7A
B0A
B1A
B2A
B3A
B4A
B5A
B6A
B7A
L202 27
L201 27
C204
0.0047
C911
0.01
C203
0.0047
C173
0.0047
C214
8p
C143
0.0047
C113
0.0047
C83
0.0047
C53
0.0047
C23
0.0047
C3
0.0047
+
-
RL231
FTR-B4CA012Z
C232
0.0047
C231
0.0047
C238
18p
C240
18p
L233
LR-455
C237
120p
C239
33p
L234
LR-456
L235
LR-456
C242
33p
C241
10p
C245
33p
C246
10p
C243
47p
+
C247
33p
-
D231
MA2S111
C248
18p
L236
LR-456
L237
LR-455
C250
18p
C249
120p
RL232
FTR-B4CA012Z
C235
0.0047
C236
0.0047
B8A
L231 10
C234
0.0047
C233
0.0047
L232 10
+
-
RL261
FTR-B4CA012Z
C262
0.0047
C261
0.0047
C268
15p
C270
12p
L263
LR-457
C267
100p
C269
22p
L264
LR-453
L265
LR-453
C271
22p
C275
22p
C273
22p
+
C277
22p
-
D261
MA2S111
C278
12p
L266
LR-453
L267
LR-457
C280
15p
C279
100p
RL262
FTR-B4CA012Z
C265
0.0047
C266
0.0047
B9A
L262 6.8
L261 6.8
C264
0.0047
C263
0.0047
C274
7p
+
-
RL291
FTR-B4CA012Z
C292
0.0047
C291
0.0047
L293
68n
C297
150p
L294
0.68
L295
68n
C302
15p
C303
100p
+
-
D291
MA2S111
RL292
FTR-B4CA012Z
C295
0.0047
C296
0.0047
B10A
L292 2.2
L291 2.2
C294
0.0047
C293
0.0047
+
-
RL321
FTR-B4CA012Z
C322
0.0047
C321
0.0047
L323
0.27
C327
56p
L324
0.22
L325
0.27
C329
68p
C331
56p
+
-
D321
MA2S111
RL322
FTR-B4CA012Z
C325
0.0047
C326
0.0047
B10WA
B10A
B10WA
L322 2.2
L321 2.2
C324
0.0047
C323
0.0047
+
-
RL501
FTR-B4CA012Z
C502
0.0047
C501
0.0047
+
-
D501
MA2S111
RL502
FTR-B4CA012Z
C505
0.0047
C506
0.0047
B0B
L502 47
L501 47
C504
0.0047
C503
0.0047
R501
47k
R503
0
C507
0.0022
C508
0.0027
C509
0.0012
L505
3.3
L507
3.3
L504
3.3
L506
3.3
C510
0.0022
+
-
RL531
FTR-B4CA012Z
C532
0.0047
C531
0.0047
C538
0.001
C540
120p
L533
LR-443
C537
0.001
C539
330p
L534
LR-444
L535
LR-444
C544
47p
C541
180p
C545
180p
C543
330p
+
C547
330p
-
D531
MA2S111
C548
120p
L536
LR-444
L537
LR-443
C550
0.001
C549
0.001
RL532
FTR-B4CA012Z
C535
0.0047
C536
0.0047
B1B
L532 47
L531 47
C534
0.0047
C533
0.0047
C542
27p
C546
27p
+
-
RL561
FTR-B4CA012Z
C562
0.0047
C561
0.0047
C568
330p
C570
39p
L563
LR-445
C567
560p
C569
330p
L564
LR-446
L565
LR-446
C574
47p
C571
56p
C575
330p
C573
330p
+
C577
330p
-
D561
MA2S111
C578
39p
L566
LR-446
L567
LR-445
C580
330p
C579
560p
RL562
FTR-B4CA012Z
C565
0.0047
C566
0.0047
B2B
L562 47
L561 47
C564
0.0047
C563
0.0047
C572
330p
C576
56p
+
-
RL591
FTR-B4CA012Z
C592
0.0047
C591
0.0047
C598
390p
C600
33p
L593
LR-447
C597
560p
C599
180p
L594
LR-458
L595
LR-458
C604
56p
C601
15p
C605
82p
C603
120p
+
C607
180p
-
D591
MA2S111
C608
33p
L596
LR-458
L597
LR-447
C610
390p
C609
560p
RL592
FTR-B4CA012Z
C595
0.0047
C596
0.0047
B3B
L592 47
L591 47
C594
0.0047
C593
0.0047
C602
82p
C606
15p
+
-
RL621
FTR-B4CA012Z
C622
0.0047
C621
0.0047
C628
150p
C630
27p
L623
LR-447
C627
330p
C629
150p
L624
LR-448
L625
LR-448
C634
10p
C631
27p
C635
120p
C633
150p
+
C637
150p
-
D621
MA2S111
C638
27p
L626
LR-448
L627
LR-447
C640
150p
C639
330p
RL622
FTR-B4CA012Z
C625
0.0047
C626
0.0047
B4B
B5B
B5B
B8A
B9A
B0B
B1B
B2B
B3B
B4B
L622 47
L621 47
C624
0.0047
C623
0.0047
C632
120p
C636
27p
+
-
RL651
FTR-B4CA012Z
C652
0.0047
C651
0.0047
C658
220p
C660
22p
L653
LR-449
C657
220p
C659
100p
L654
LR-450
L655
LR-450
C664
22p
C661
33p
C665
39p
C663
82p
+
C667
100p
-
D651
MA2S111
C668
22p
L656
LR-450
L657
LR-449
C670
220p
C669
220p
RL652
FTR-B4CA012Z
C655
0.0047
C656
0.0047
L652 47
L651 47
C654
0.0047
C653
0.0047
C662
39p
C666
33p
+
-
RL681
FTR-B4CA012Z
C682
0.0047
C681
0.0047
C688
68p
C690
47p
L683
LR-451
C687
220p
C689
47p
L684
LR-452
L685
LR-452
C691
33p
C695
33p
C693
82p
+
C697
47p
-
D681
MA2S111
C698
47p
L686
LR-452
L687
LR-451
C700
68p
C699
220p
RL682
FTR-B4CA012Z
C685
0.0047
C686
0.0047
B6B
L682 47
L681 47
C684
0.0047
C683
0.0047
C692
33p
C696
33p
VPR2A
VHDWA
VHD
W
A
+
-
RL711
FTR-B4CA012Z
C712
0.0047
C711
0.0047
C718
47p
C720
18p
L713
LR-453
C717
180p
C719
47p
L714
LR-454
L715
LR-454
C721
15p
C725
22p
C723
47p
+
C727
47p
-
D711
MA2S111
C728
18p
L716
LR-454
L717
LR-453
C730
47p
C729
180p
RL712
FTR-B4CA012Z
C715
0.0047
C716
0.0047
B7B
L712 27
L711 27
C714
0.0047
C713
0.0047
C722
22p
C726
15p
C724
8p
+
-
RL741
FTR-B4CA012Z
C741
0.0047
C748
18p
C750
18p
L743
LR-455
C747
120p
C749
33p
L744
LR-456
L745
LR-456
C751
10p
C755
33p
C753
47p
+
C757
33p
-
D741
MA2S111
C758
18p
L746
LR-456
L747
LR-455
C760
18p
C759
120p
RL742
FTR-B4CA012Z
C745
0.0047
C746
0.0047
B8B
L742 10
L741 10
C744
0.0047
C743
0.0047
C752
33p
C756
10p
+
-
C950
0.0047
D950
MA2S111
RL950
FTR-B4CA012Z
C951
0.01
R950
47
C952
0.1
L950
10
C304
18p
L296
0.33
C821
18p
L808
0.33
C962
0.01
EP950
C953
0.0047
C954
0.01
R961
100
C972
5p
R952
5.6k
Q951
2SC5551
L952
100
C968
0.1
R951
1k
C967
0.1
R953
330
R954
15
R955
330
EP951
+
-
RL951
FTR-B4CA012Z
EP953
C956
0.0047
D951
MA2S111
+
-
RL952
FTR-B4CA012Z
C958
0.0047
D952
MA2S111
C959
0.01
R958
47
C969
0.1
L953
10
EP952
C960
0.0047
C961
0.01
R962
100
R963
1
L954
LR-498
C973
5p
R960
5.6k
Q953
2SC5551
L955
100
Q950
DTA114EU
C971
0.1
R959
1k
C970
0.1
L951
LR-498
Q952
DTA114EU
+
-
RL953
FTR-B4CA012Z
C963
0.0047
D953
MA2S111
C965
0.0047
C955
0.01
VHDWB
VPR2B
+
-
RL771
FTR-B4CA012Z
C772
0.0047
C771
0.0047
C778
15p
C780
12p
L773
LR-457
C777
100p
C779
22p
L774
LR-453
L775
LR-453
C781
22p
C785
22p
C783
22p
+
C787
22p
-
D771
MA2S111
C788
12p
L776
LR-453
L777
LR-457
C790
15p
C789
100p
RL772
FTR-B4CA012Z
C775
0.0047
C776
0.0047
B9B
L772 6.8
L771 6.8
C774
0.0047
C773
0.0047
C784
7p
C742
0.0047
+
-
RL801
FTR-B4CA012Z
C802
0.0047
C801
0.0047
L805
68n
C816
15p
C813
150p
+
-
D801
MA2S111
L806
0.68
L807
68n
C820
100p
RL802
FTR-B4CA012Z
C805
0.0047
C806
0.0047
B10B
L802 2.2
L801 2.2
C804
0.0047
C803
0.0047
+
-
RL831
FTR-B4CA012Z
C832
0.0047
C831
0.0047
L833
0.27
C837
56p
L834
0.22
L835
0.27
C839
68p
C841
56p
+
-
D831
MA2S111
RL832
FTR-B4CA012Z
C835
0.0047
C836
0.0047
B10WB
B6B
B7B
B8B
VHDWB
B9B
B10B
B10WB
L832 2.2
L831 2.2
C834
0.0047
C833
0.0047
+
-
D351
MA2S111
C354
0.0047
C353
0.0047
RL351
FTR-B4CA012Z
C355
0.0047
+
-
D352
MA2S111
C358
0.0047
C356
0.0047
RL352
FTR-B4CA012Z
C357
0.0047
R352
68
R351
150
+
-
D353
MA2S111
C361
0.0047
C360
0.0047
RL353
FTR-B4CA012Z
C359
0.0047
R355
100
R354
47
+
-
RL354
FTR-B4CA012Z
+
-
D355 MA2S111
C365 0.0047
RL355
FTR-B4CA012Z
R357
22
C362
0.0047
L371
LR-459
L372
LR-459
L373
LR-395
R372
100
R373
100
+
-
D371 MA2S111
C371 0.0047
RL371
FTR-B4CA012Z
R371
100
R360
100
D354
MA2S111
C364
0.0047
C363
0.0047
R358
180
Q355
DTA114EU
DWSPA
HF50A
ATT12A
ATT12A
ATT3A
A
TT6A
a
b
BUS LINE1
+15V
BPF
UNIT
(2)
A
B
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
B5B
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
4.58V
4.50V
4.27V
4.55V
4.67V
5.03V
4.37V
4.74V
4.24V
4.74V
4.72V
4.32V
4.28V
4.12V
5.00V
5.00V
4.65V
4.67V
4.78V
4.50V
4.45V
4.91V
4.80V
5.02V
range: input impedance
200mV: 100M
2V: 11M
20V,200V,1000V: 10M
MESUREMENT CONDITIONS
voltage at RX
frequency: 14.1 MHz
mode: J3E(USB)
Digital tester
ANT(RX): no input
(TX): no modulation
Summary of Contents for IC-7800
Page 1: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 65 VOLTAGE DIAGRAM 67 Dec 2009 ...
Page 79: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 60 VOLTAGE DIAGRAM 64 Feb 2009 ...
Page 157: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Aug 2008 ...
Page 245: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Jul 2008 ...
Page 333: ...THE TRANSCEIVER i7800 SERVICE MANUAL S 14015HZ C1 2 Mar 2006 ...
Page 555: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14015HZ C1 2 C 2004 2006 Icom Inc ...