Icom IC-T70A Service Manual page 39

MAIN UNIT (4/4)
TTEMP
5VS
VCC- I
C519
0.001
T5
R512
10
4.88V
L502
R520
C517 C522 C1000
8.2k
0.1 0.001 0.01
R502
0.001 C509 JDP2S04E JDP2S04E C523
3.3k
C500 0 0.001 0.001
D500 D501
R519
R517
1k
R515
R510 1k
1k
TX:0.78V
R518
R522
VHFC
1.5k 100
R516
TXMUTE 10k C520 C527
0.1 0.01
UHFC
T5
V TX:1.77V
C512
U TX:2.24V
0.001
R514 MMZ1005Y102CT
V TX:0.44V
1M
U TX:0.56V
V TX:0.74V
5
3
U TX:0.94V
4
R505
BPF1/ISET1 1
IC500
22k 2 TA75S01F
V TX:0.44V
U TX:0.56V
BPF2 /ISET2
R524
22k
C526
0.01
BPF3 /PSET
TXMUTE
VR5
4.21V
C529
Q500 3.13V
BB506C
0.5P
3.16V
C507
VHF C530
10P
1ST IF MIX
1.60V
8P
C506
0.001
2.68V
( 145MHz)
EP503
7.20V
MPZ1608S101A
MMZ2012Y102B C566 C579
C576
EP501 1
0.001 0.001
C539 C542 C547 C551
0.001 0.1 0.1 0.1
L507 V TX:1.94V
22N U TX:1.95V
V TX:1.78V
C561 L510 L512
U TX:2.23V
LQW18AN68NG00D
0.001 15N 12N
RFM01U7P
L505
C543 Q 503
C559
33P
0.001 18N
C540
0.001 C548
Q502
R532 R824
12P C957
2SC5998 47
0 33P
C574
390
18P
R528
R533
47k
C549 C552 3.3k R543
0.001 0.1
100
R537
C560
0.001
R550
15k
C577
UHFC
0.001
VHFC
MMZ1005Y102C T
EP502
R822
0
R823
V TX:2.37V
0
C568 C572
1M
U TX:2.39V
R527
0.01 R534 0.001 0.001 R548
C536 10k
560k
V TX:0.59V
U TX:0.60V
C555
I C501 0.01
V TX:0.59V 1 8
Q504
2 7
U TX:0.60V LDTA144EE
R540
3 6
4 5
10k
R538
LM2904PWR
C961 C960
R529 15k
1
0.1 1
33k C553
C557
0.01
BPF3
C558
0.01
R539
15k
RX140 (136-174)
R535
47
4.87V
4.00V
4.85V
R542
C541 C554
1P 8P 47
4.41V 2.70
Q505
BB506C R551
1.31 V
0
C538
8P
LQW18AN82NG00D
2.37V
2.74V (145MHz)
(145MHz)
V TX:2.02V
U TX:3.50V
RX:0V
150 Q510
LDTC114EE
R564
R568
C623 C610
NTCG10
470 P
R570 0.001
47
L514
20.0N
D506
*C584 C586 C588
8P 100P 1SV307 C599
*C585 0.3P
L517
V TX:2.03V
16.0N
Q507
U TX:3.82V
L516
RFM12U7X L518 RX:0V
2.5N
0.22U
MP500
3253 V TX:0V
C589 U TX:4.7V
R556
0.001 RX:0V C595
0
0.001
R555
C592
1k
0.001
EP504
MMZ1005Y102CT
Q508
1 5
2
34
XP1115
C614
0.001
C657
0.001
C606
L522
0.001
0.82U
1SV308
L515 C596 D510
V TX:1.68V
10.3N 100P
U TX:0V
RX:0V
D 511
1SV308
LQW18ANR15G00D LQW18AN56NG00
L519 C613 L524
C593
220P 0.001
D509
C615
C609
1SV308 15P
15P
3.12V
4.25V
3.04V
Q509
C607
BB506C
V 1.53V
15P
C597
0.001
UHF
1ST IF MIX
2.29V
(435MHz)
V TX:3.97V V TX:2.02V
U TX:0V U TX:3.82V
RX:0V RX:0V
R561
C605
150 C604
D525 0.001
47P
1SV271
*C670
C699 C651
L523 L625
16.1N 20N 8P 4P
C702
C701
39P
0.3P
C624
0.3P
C612
*C608 L624
10P
18.3N
C635
0.001
R573
47k
L535
18N
C647 C659
4P 7P
R574
R569
R572 82k
47k
10k
C627
0.001
C959
C620
0.5P
0.5P
L532
C616 L531 L534
61N
0.1 72.0N 45.5N
C644 C650
1P
2P
C642 C649
C652
30P
18P 22P
V TX:0.85V
U TX:0V
RX:0V
4.86V
R575 L530 R578
UR5
33N
47 0
R577
4.84V
4.7k
4.37V
1P
2.45
C617 C621 1P 1P C641
1P C629 C633 68P
1.01V Q511
BB506C
C630
C622
1P
1P
2.23V 2.54V
( 435MHz) (435MHz)
RX440 400-479 MHz
*: Refer to the PARTS LIST for the value and name of component.
10 - 4
J500
1
C654
7P
C653
100P
R588
L533
82k
15.1N
MP501
OG-503040
V TX:0.81V
U TX:0.84V
C958
RX:0V
0.001
R582
150
D524
1SV308
V
L536 C662 C667 C671
47N 100P 100P 100P