Icom IC-F4001 Service Manual page 21

Table of Contents

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[MAIN-A UNIT]
REF
PARTS
NO.
NO.
R108
7030005080 S.RES ERJ2GEJ 823 X (82K)
R109
7030005530 S.RES ERJ2GEJ 100 X (10)
R110
7030004980 S.RES ERJ2GEJ 101 X (100)
R112
7030004970 S.RES ERJ2GEJ 470 X (47)
R113
7030007300 S.RES ERJ2GEJ 332 X (3.3K)
R114
7030005090 S.RES ERJ2GEJ 104 X (100K)
R115
7030005090 S.RES ERJ2GEJ 104 X (100K)
R116
7030005310 S.RES ERJ2GEJ 124 X (120K)
R117
7030005090 S.RES ERJ2GEJ 104 X (100K)
R118
7030005310 S.RES ERJ2GEJ 124 X (120K)
R119
7030005100 S.RES ERJ2GEJ 154 X (150K)
R120
7030005710 S.RES ERJ2GEJ 121 X (120)
R121
7030007300 S.RES ERJ2GEJ 332 X (3.3K)
R122
7030004970 S.RES ERJ2GEJ 470 X (47)
R123
7030005530 S.RES ERJ2GEJ 100 X (10)
R125
7030008370 S.RES ERJ2GEJ 561 X (560)
R126
7030007290 S.RES ERJ2GEJ 222 X (2.2K)
R127
7030005090 S.RES ERJ2GEJ 104 X (100K)
R128
7030005010 S.RES ERJ2GEJ 681 X (680)
R132
7030005050 S.RES ERJ2GEJ 103 X (10K)
R134
7030005090 S.RES ERJ2GEJ 104 X (100K)
R135
7030007290 S.RES ERJ2GEJ 222 X (2.2K)
R136
7030007290 S.RES ERJ2GEJ 222 X (2.2K)
R137
7030008410 S.RES ERJ2GEJ 392 X (3.9K)
R138
7030005000 S.RES ERJ2GEJ 471 X (470)
R139
7030005090 S.RES ERJ2GEJ 104 X (100K)
R140
7030008410 S.RES ERJ2GEJ 392 X (3.9K)
R141
7030005240 S.RES ERJ2GEJ 473 X (47K)
R142
7030005090 S.RES ERJ2GEJ 104 X (100K)
R143
7030005040 S.RES ERJ2GEJ 472 X (4.7K)
R146
7030004970 S.RES ERJ2GEJ 470 X (47)
R147
7030005030 S.RES ERJ2GEJ 152 X (1.5K)
R148
7030005120 S.RES ERJ2GEJ 102 X (1K)
R149
7030007060 S.RES ERJ2GEJ 684X (680K)
R151
7030005600 S.RES ERJ2GEJ 273 X (27K)
R152
7030005210 S.RES ERJ2GEJ 822 X (8.2K)
R153
7030007300 S.RES ERJ2GEJ 332 X (3.3K)
R154
7030005210 S.RES ERJ2GEJ 822 X (8.2K)
R155
7030005600 S.RES ERJ2GEJ 273 X (27K)
R156
7030005120 S.RES ERJ2GEJ 102 X (1K)
R157
7030005120 S.RES ERJ2GEJ 102 X (1K)
R158
7030005120 S.RES ERJ2GEJ 102 X (1K)
R159
7030005290 S.RES ERJ2GEJ 682 X (6.8K)
R301
7030007340 S.RES ERJ2GEJ 153 X (15K)
R302
7030008010 S.RES ERJ2GEJ 123 X (12K)
R303
7030005720 S.RES ERJ2GEJ 563 X (56K)
R304
7030005030 S.RES ERJ2GEJ 152 X (1.5K)
R310
7030005220 S.RES ERJ2GEJ 223 X (22K)
R311
7030005220 S.RES ERJ2GEJ 223 X (22K)
R312
7030005220 S.RES ERJ2GEJ 223 X (22K)
R313
7030007300 S.RES ERJ2GEJ 332 X (3.3K)
R314
7030006610 S.RES ERJ2GEJ 394 X (390K)
R315
7030005080 S.RES ERJ2GEJ 823 X (82K)
R316
7030005000 S.RES ERJ2GEJ 471 X (470)
R317
7030005290 S.RES ERJ2GEJ 682 X (6.8K)
R318
7030005050 S.RES ERJ2GEJ 103 X (10K)
R321
7030007340 S.RES ERJ2GEJ 153 X (15K)
R322
7030008300 S.RES ERJ2GEJ 184 X (180K)
R323
7030005720 S.RES ERJ2GEJ 563 X (56K)
R324
7030005220 S.RES ERJ2GEJ 223 X (22K)
R325
7030005290 S.RES ERJ2GEJ 682 X (6.8K)
R326
7030005240 S.RES ERJ2GEJ 473 X (47K)
R327
7030005240 S.RES ERJ2GEJ 473 X (47K)
R328
7030005240 S.RES ERJ2GEJ 473 X (47K)
R329
7030005040 S.RES ERJ2GEJ 472 X (4.7K)
R330
7030005090 S.RES ERJ2GEJ 104 X (100K)
R331
7030005240 S.RES ERJ2GEJ 473 X (47K)
R341
7030005070 S.RES ERJ2GEJ 683 X (68K)
R342
7030005070 S.RES ERJ2GEJ 683 X (68K)
R343
7030005070 S.RES ERJ2GEJ 683 X (68K)
R344
7030005070 S.RES ERJ2GEJ 683 X (68K)
R345
7030005070 S.RES ERJ2GEJ 683 X (68K)
R346
7030005240 S.RES ERJ2GEJ 473 X (47K)
R347
7030005050 S.RES ERJ2GEJ 103 X (10K)
R348
7030005090 S.RES ERJ2GEJ 104 X (100K)
R349
7030005160 S.RES ERJ2GEJ 105 X (1M)
R350
7030005050 S.RES ERJ2GEJ 103 X (10K)
R351
7030008290 S.RES ERJ2GEJ 183 X (18K)
R352
7030005050 S.RES ERJ2GEJ 103 X (10K)
R353
7030005210 S.RES ERJ2GEJ 822 X (8.2K)
R354
7030005160 S.RES ERJ2GEJ 105 X (1M)
R355
7030005050 S.RES ERJ2GEJ 103 X (10K)
R359
7030005210 S.RES ERJ2GEJ 822 X (8.2K)
R360
7030007290 S.RES ERJ2GEJ 222 X (2.2K)
R361
7030005000 S.RES ERJ2GEJ 471 X (470)
R362
7030005060 S.RES ERJ2GEJ 333 X (33K)
R363
7030005000 S.RES ERJ2GEJ 471 X (470)
R364
7030005090 S.RES ERJ2GEJ 104 X (100K)
R366
7030005100 S.RES ERJ2GEJ 154 X (150K)
R368
7030005700 S.RES ERJ2GEJ 274 X (270K)
R369
7030005100 S.RES ERJ2GEJ 154 X (150K)
R370
7030005170 S.RES ERJ2GEJ 474 X (470K)
R371
7030005290 S.RES ERJ2GEJ 682 X (6.8K)
R372
7030009290 S.RES ERJ2GEJ 562 X (5.6K)
R373
7030005080 S.RES ERJ2GEJ 823 X (82K)
R374
7030008410 S.RES ERJ2GEJ 392 X (3.9K)
R375
7030005000 S.RES ERJ2GEJ 471 X (470)
R377
7030005060 S.RES ERJ2GEJ 333 X (33K)
R378
7030005050 S.RES ERJ2GEJ 103 X (10K)
R379
7030005700 S.RES ERJ2GEJ 274 X (270K)
R381
7030005700 S.RES ERJ2GEJ 274 X (270K)
R382
7030005170 S.RES ERJ2GEJ 474 X (470K)
R383
7030008310 S.RES ERJ2GEJ 564 X (560K)
R384
7030005090 S.RES ERJ2GEJ 104 X (100K)
R385
7030005310 S.RES ERJ2GEJ 124 X (120K)
DESCRIPTION
M.
LOCATION
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
T
T
T
B
B
B
B
B
B
B
B
T
T
B
B
B
B
B
B
B
B
B
B
B
B
B
T
T
T
T
T
T
T
T
T
T
B
B
B
T
T
T
T
T
T
T
T
T
T
T
T
T
B
T
T
T
T
T
T
T
T
B
B
B
B
B
T
B
T
T
B
T
T
T
T
T
T
T
T
T
T
T
T
T
[MAIN-A UNIT]
H/V
REF
PARTS
NO.
NO.
19.2/29
R386
7030005060 S.RES ERJ2GEJ 333 X (33K)
21.2/31
R387
7030005030 S.RES ERJ2GEJ 152 X (1.5K)
22.1/25.4
R388
7030008010 S.RES ERJ2GEJ 123 X (12K)
25.8/25.4
R389
7030005800 S.RES RR0510P-102-D (1K)
24.2/28.5
R390
7030005810 S.RES RR0510P-152-D (1.5K)
27.4/26.8
R391
7030007290 S.RES ERJ2GEJ 222 X (2.2K)
31/26.8
R393
7030005700 S.RES ERJ2GEJ 274 X (270K)
35.4/29.3
R394
7030005090 S.RES ERJ2GEJ 104 X (100K)
33.4/25.1
R395
7030005310 S.RES ERJ2GEJ 124 X (120K)
36.4/25.1
R396
7030005700 S.RES ERJ2GEJ 274 X (270K)
36.4/29.3
R397
7030008300 S.RES ERJ2GEJ 184 X (180K)
39.4/25.1
R398
7030005050 S.RES ERJ2GEJ 103 X (10K)
41.2/27.7
R401
7030005120 S.RES ERJ2GEJ 102 X (1K)
43.3/25.1
R402
7030005000 S.RES ERJ2GEJ 471 X (470)
39.2/29.8
R403
7030010040 S.RES ERJ2GEJ-JPW
35.6/40.8
R406
7030005090 S.RES ERJ2GEJ 104 X (100K)
39/40.8
R408
7030004980 S.RES ERJ2GEJ 101 X (100)
37.3/40.8
R412
7030005040 S.RES ERJ2GEJ 472 X (4.7K)
39.1/44.4
R413
7030005090 S.RES ERJ2GEJ 104 X (100K)
47.4/17.6
R414
7030005230 S.RES ERJ2GEJ 334 X (330K)
40.4/40.3
R416
7030005120 S.RES ERJ2GEJ 102 X (1K)
43/36.7
R417
7030007340 S.RES ERJ2GEJ 153 X (15K)
43/37.6
R418
7030005120 S.RES ERJ2GEJ 102 X (1K)
45.7/35.1
R420
7030005090 S.RES ERJ2GEJ 104 X (100K)
43/35.5
R421
7210003061 VAR
48.3/35.5
R423
7030005090 S.RES ERJ2GEJ 104 X (100K)
46.5/34.6
R424
7030005090 S.RES ERJ2GEJ 104 X (100K)
46.5/33.7
R426
7030007340 S.RES ERJ2GEJ 153 X (15K)
46.5/31.9
R427
7030005230 S.RES ERJ2GEJ 334 X (330K)
48.3/32.8
R428
7030005030 S.RES ERJ2GEJ 152 X (1.5K)
45.6/44
R429
7030006610 S.RES ERJ2GEJ 394 X (390K)
47.1/42.2
R430
7030005160 S.RES ERJ2GEJ 105 X (1M)
37.8/31.4
R431
7030005050 S.RES ERJ2GEJ 103 X (10K)
37.8/29.6
R432
7030005040 S.RES ERJ2GEJ 472 X (4.7K)
51.7/39
R433
7030005050 S.RES ERJ2GEJ 103 X (10K)
53.9/35.1
R434
7030005050 S.RES ERJ2GEJ 103 X (10K)
55.5/38.5
R435
7030005050 S.RES ERJ2GEJ 103 X (10K)
57.5/36.9
R436
7030005040 S.RES ERJ2GEJ 472 X (4.7K)
58.8/39.8
R437
7030005050 S.RES ERJ2GEJ 103 X (10K)
20.3/21.8
R438
7030007290 S.RES ERJ2GEJ 222 X (2.2K)
31/25.1
R439
7030007290 S.RES ERJ2GEJ 222 X (2.2K)
59.4/35.7
R440
7030009280 S.RES ERJ2GEJ 391 X
29.7/23.8
R441
7030005050 S.RES ERJ2GEJ 103 X (10K)
68.4/12.4
R442
7030007280 S.RES ERJ2GEJ 331 X (330)
66.6/12.4
R451
7030005530 S.RES ERJ2GEJ 100 X (10)
67.5/12.4
R453
7030008010 S.RES ERJ2GEJ 123 X (12K)
69.3/10.7
R454
7030005220 S.RES ERJ2GEJ 223 X (22K)
66.2/36.7
R455
7030008010 S.RES ERJ2GEJ 123 X (12K)
64.6/37.9
R456
7030005050 S.RES ERJ2GEJ 103 X (10K)
64.6/39.6
R457
7030005040 S.RES ERJ2GEJ 472 X (4.7K)
62.6/39.6
R458
7030005120 S.RES ERJ2GEJ 102 X (1K)
63.7/41.2
R459
7030005120 S.RES ERJ2GEJ 102 X (1K)
63.7/42.8
R460
7410001140 S.ARR EXB28V104JX
67.3/42.8
R461
7030005040 S.RES ERJ2GEJ 472 X (4.7K)
66.4/39.6
R462
7030005040 S.RES ERJ2GEJ 472 X (4.7K)
67.3/39.6
R463
7030005050 S.RES ERJ2GEJ 103 X (10K)
73.7/27.7
R464
7030005090 S.RES ERJ2GEJ 104 X (100K)
69.1/33
R466
7410001140 S.ARR EXB28V104JX
70/33
R467
7410001140 S.ARR EXB28V104JX
70.9/33
R468
7030008400 S.RES ERJ2GEJ 182 X (1.8K)
72.8/29.5
R469
7030009280 S.RES ERJ2GEJ 391 X
73.7/29.5
R470
7030005090 S.RES ERJ2GEJ 104 X (100K)
75.5/29.5
R471
7030007340 S.RES ERJ2GEJ 153 X (15K)
75.5/27.7
R472
7030005090 S.RES ERJ2GEJ 104 X (100K)
77.9/29.5
R473
7410001140 S.ARR EXB28V104JX
74.5/32.9
R474
7030007340 S.RES ERJ2GEJ 153 X (15K)
77.4/31.6
R475
7030005090 S.RES ERJ2GEJ 104 X (100K)
84.8/31.1
R476
7030005120 S.RES ERJ2GEJ 102 X (1K)
84.8/29.4
R477
7030005120 S.RES ERJ2GEJ 102 X (1K)
84.8/27.7
86.6/27.7
85.7/26
C1
4030011650 S.CER C1005 CH 1H 1R5B-T
85.7/24.3
C2
4030009720 S.CER C1005 CH 1H 080C-T
81.3/15.4
C3
4030011630 S.CER C1005 CH 1H 0R5B-T
82.3/34.6
C4
4030011650 S.CER C1005 CH 1H 1R5B-T
83.2/34.6
C5
4030009720 S.CER C1005 CH 1H 080C-T
86.6/24.3
C6
4030011630 S.CER C1005 CH 1H 0R5B-T
75.5/24.3
C7
4030019740 S.CER C1005 JB 1H 102K-T
71.8/12
C8
4030011670 S.CER C1005 CH 1H 2R5B-T
72.7/10.2
C9
4030011700 S.CER C1005 CH 1H 040B-T
75.4/10.2
C10
4030019740 S.CER C1005 JB 1H 102K-T
73.7/24.3
C11
4030019740 S.CER C1005 JB 1H 102K-T
56.1/10.5
C12
4030009720 S.CER C1005 CH 1H 080C-T
56.1/9.6
C13
4030009760 S.CER C1005 CH 1H 150J-T
25.1/43.9
C14
4030007050 S.CER C1608 CH 1H 220J-T
51.6/7.5
C18
4030019740 S.CER C1005 JB 1H 102K-T
57.8/8.7
C19
4030019740 S.CER C1005 JB 1H 102K-T
59.5/5.5
C20
4030019740 S.CER C1005 JB 1H 102K-T
57.8/9.6
C21
4030019740 S.CER C1005 JB 1H 102K-T
61.7/8.7
C22
4030019740 S.CER C1005 JB 1H 102K-T
61.7/10.4
C23
4030019930 S.CER C1005 JB 1A 104K-T
61.7/11
C24
4030019950 S.CER C1005 JB 0J 224K-T
74.5/8.4
C25
4030019810 S.CER C1005 JB 1E 103K-T
80.2/8.4
C26
4030019740 S.CER C1005 JB 1H 102K-T
84.7/10.2
C27
4030019740 S.CER C1005 JB 1H 102K-T
86.5/10.2
C28
4030019970 S.CER C1005 JB 0J 105K-T
85.6/12
C29
4030019740 S.CER C1005 JB 1H 102K-T
84.7/13.8
C36
4030011320 S.CER C1005 CH 1H 470J-T
86.5/15.6
C37
4030014260 S.CER C1005 JB 1H 331K-T
84.7/15.6
C38
4030019740 S.CER C1005 JB 1H 102K-T
70.9/15.6
C39
4030011320 S.CER C1005 CH 1H 470J-T
71.8/13.8
C45
4030011320 S.CER C1005 CH 1H 470J-T
70.9/13.8
C47
4030014260 S.CER C1005 JB 1H 331K-T
80.9/15.4
C51
4030011700 S.CER C1005 CH 1H 040B-T
74.5/13.8
C52
4030019740 S.CER C1005 JB 1H 102K-T
M.=Mounted side (T: Mounted on the Top side, B: Mounted on the Bottom side)
6 - 2
DESCRIPTION
M.
T
T
B
B
B
T
B
B
B
B
B
B
T
B
B
B
B
B
T
B
B
B
B
T
TP76N00N-15F-A103-2251A
T
T
B
B
B
B
B
B
B
B
B
B
B
B
T
T
B
B
B
B
B
B
B
B
T
B
B
B
B
B
T
T
B
B
T
T
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
T
T
T
T
T
T
T
T
T
B
B
B
B
B
B
B
B
B
S.=Surface mount
H/V
LOCATION
73.6/13.8
73.6/15.6
78.8/13.7
77.9/13.7
77.2/15.5
74.5/15.6
61.7/7.8
60.8/6.2
60.8/7.8
61.7/6.2
60.8/4.6
61.7/9.4
66.2/35.8
68.5/22.5
67.5/28.7
12.7/45.6
35.6/46.3
16.8/38.3
19.8/32.2
21.5/34.9
21.5/35.8
21.3/37.1
19.8/37.9
79.6/32.3
6.9/37.8
5.2/38.7
69.3/6.3
68.4/4.6
65.1/3.1
66.8/3.1
71.7/3.1
66.6/34.8
70.5/30.9
67.5/30.3
70.5/30
76.8/24.5
75.4/30
8.4/34.7
4.8/33.3
83.2/8.4
17.5/43.6
20.8/43.6
20.2/33.7
85.2/37.3
87.9/35.2
87/32.2
86.1/35.2
87.6/42.7
80.7/35
81.3/30
80.4/30
77.7/30
84/30.8
84/29.9
71.8/37.7
73.4/34.8
69.5/40
69.5/37
70/41.6
70/39.5
74.7/46.1
72.6/45.4
72.6/47.2
77.7/46.1
72.6/46.3
79.5/30
75.9/46.1
85.2/34.5
8.5/5.7
10.6/5.7
12.5/8
9.1/10.5
10.7/14.9
12.5/10
14.9/6.6
12.4/14.9
12.4/15.8
14.8/13.4
16.5/13.4
17.7/11.8
19.7/11.8
21.4/10.3
19.8/19.1
18.2/19.2
33.5/11.3
30.8/5.9
39.2/5.9
31.7/11.3
35.7/5.9
35.7/11.3
36.6/9.6
36.6/7.6
37.5/7.6
37.3/9.1
23.8/16.1
24.7/16.1
32.7/15.1
32.7/14.1
32.7/12.1
33.2/9.1
39.1/14.2
41/8.9

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Do you have a question about the IC-F4001 and is the answer not in the manual?

Questions and answers

kabindra
February 3, 2025

ptt pressed but not tx

1 comments:
Mr. Anderson
February 10, 2025

The Icom IC-F4001 may not be transmitting when the PTT is pressed due to several possible reasons:

1. Transmit Inhibit Function – Transmission is restricted if:
- The channel is muted (PMR operation only).
- The channel is busy.
- A signal with an unmatched (or matched) CTCSS or DTCS tone is received.
- The selected channel is a "receive only" channel.

2. Time-Out Timer – If the transceiver has been transmitting continuously beyond the pre-programmed time limit, the time-out timer activates and stops further transmission.

3. Penalty Timer – After the time-out timer activates, the penalty timer may further inhibit transmission for a set period.

4. Power Supply Issues – If the transceiver is connected to a power supply with incorrect voltage or reversed polarity, it may not function properly.

5. Antenna Damage – If an RF signal stronger than 20 dBm (100 mW) was applied to the antenna connector, the transceiver’s front-end could be damaged, affecting transmission.

Checking these factors can help identify and resolve the issue.

This answer is automatically generated

kabindra
February 16, 2025

Q73 trasistor does not work when PTT pressed but software is ok

This manual is also suitable for:

Ic-f4002Ic-f4003Ic-f4006Ic-f4008

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