Main Unit (1); Ux-910 Main Unit (1) - Icom IC-910H Service Manual

12-8 UX-910 MAIN UNIT (1)

MAIN UNIT (1)

-5V
+9
L511 10µH
+5 C522
0.1 C523
C507 470p C520
0.1 C508 0.001
470p
0.35
4.9
R501
1k
ULP
Q501 C506
C564
DTA144EU
10p L501
22p
10µH
CK
DAT
IC501
R503 R511
TB31242FN
1k 5.6k
R502 CP 10
1 FIN
1k 2 BS 9
GND
3 LD 8
CLK
4 VCC 7
C561 DATA
5 XIN 6
STB
22p
C562
C504
22p C503
0.0047
22
C502
470p
C501
470p
R504
1k
R681
56
12PS
C563
22p
R506
680
FM
+9
CNTY
FM :4.8
SSB/CW:0
+5
L603 L604
J312
P312 0.33µH 0.68µH SCLK
TO IC-910
PLL UNIT J541
C603 C604
R607
100p 120p
2.2k
R605
R606
220
33k
2.8
C608
0.1
0.7
Q601
2SC4215
12DS
12C2
DAT
CK
R633
2k
R621 R634
1k 2k
R635
2k
R622 1k
R636
R623 1k 2k
R637
R624 1k 2k
R638
R625 1k
2k
R639
2k
R626 1k
R640
2k
R627 1k
R641
R628 1k 2k
3.8V
R642
R629 1k 2k
1.0V
R643
R630 1k 2k
R644
R631 1k 2k
MP602
R645
2k
L651 L652 L653
33µH 39µH 39µH
C678
C652 C656 0.001
20p 3.5p
C654
10p
R652
150
C651 C653 C655 C657 R651
47p 68p 82p 56p 1k
+5
+9
-5V
C515 470p
C524
SSB,CW R515
1 EP510 10
Q531
7.6
R531
2SD2216
C511 C516
C512 C513 220
1
0.001 0.1 0.1
C514
0.0047
1
IC502A
TC7W66FU
C538
R512
8 0.001 C533
2.2k
4
7 1
C531 C532
470 1 D531
2
MA8082
R514
120
Q511
2SK880
0.7
L512 R517
R519
R518 1.2k 0.1µH 1k
120
C510
0.7 4.8
0.033
CP501
Q512
2SC4116
4.9
W531
W532
4.8
R516 C517 C518
2.2
1.8k 1
6 5 IC502B
TC7W66FU
3
FM :7
SSB/CW:0
Q502
R505
DTC114TU 4.7k
C505
0.001
Q503
DTA114EE
+5
FM :0
SSB/CW:8.8 1G_RET
4.8
R612
68
R604 100
5V_DDS
R613 R611
100
L602 100
1Vpp
C605
10µH
0.0047 1 5
2
4
3
IC601
TC7SU04F
C609 R603
0.1
1M
R663
R664
1k
1k
C672
0.001 C671
0.1
R661 C673
R662 C670
1k 1k 0.001
0.001
W601
4.8
1 ETCO0 75
VSS
2 ETCO1 74
SYSCLKO
3 ETCO2 73
C661 VDD
VSS 72
4
0.001 VDD
5 ETCO3 71
VSS
PD1
6 ETCO4 70
DA0
VSS 69
7
DA1 C669
8 ETCO5 68 PD2
DA2
0.1
9 ETCO6 67
DA3
10 ETCO7 66
VSS
VSS 65
11 IC661
DA4
12 VDD 64
DA5
SC-1246A
13 Q4MA 63
DA6
14 Q16MA 62
DA7
VSS 61
15 C668
VSS
16 FCK 60
VSS 0.001
17 RC 59
DA8
REF_OSC 58
18
DA9
19 VDD 57
DA10
20 PDTRI 56
DA11
21 VSS 55
VDD
PD0 54
22
TE1
23 VDD 53
TE2
C662
24 PD1 52
TE3
0.001
25 PD2 51
VDD
C676
0.1
C667
C680
0.001
C674
47 R771
0.001
1k
5V_DDS
C770
470p
C663 C664 C677 C665
C675
L661 C666
0.001 0.1 0.1 0.001
10
10µ 0.001 UNLOCK:4.4
4.2V
C679 4.8
0.1
L621
IC621
10µH
TC7SU04F
0.5V
1 5
2
3 4
L622
C622
47µH
0.1
C624
1
R648 C623
5.6k C621
0.001
0.1
MP601
12 - 7
From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library
-5V
+9
MP541
8V_1VCO L555
56nH
R533
100
EP543 L531
10nH 7.3
C551
R555
7.8 7.3 100 47p
C546
0.5p
R543
6.8k
R551
R547 3.5
22k
C535 47
4.5
0.1
L581
Q541 Q551 6.8nH
2SC5508 2SC5107
R541
C582
L542 6.8k C542 4.2
1p
8nH 0.5p
C541
C537
6p Q542
47p
2SC5193
C536
0.001
1.6 3.8
R556 C581
2.1 220 2.5p
C543
1.5p
R542 C544
6.8k
1.5p
R544 C545
470 0.001
4.9
C614
EP610
L612 L611 L610 R610 0.001
0.56µH 0.22µH 100
0.82µH
C612 C611 C610
82p 270p 220p 3.8Vpp
IC610
TC7W74FU
C613
0.0047
Q701 L702
2SA1588 10µH
-5V_LPF
+9
-3.3
MP701
R702 C712
C702
470 0.001 CP701
470p
C704 C705
R701 3.0
10
0.001 1k
7
C746
IC701B
10
µPC4570G2 W731
-2.7
C706 C707
4.7
4.7 6 5
7.0
1.9
IC701A
R729 R731
R722 µPC4570G2 R726
4 L711 2.7k
10k 150 2.2M R719 L712
2
0.1µH
1k 43nH
1
3
L703 R728 C715
R727
R723
8 1k 0.001
R724 10µH 100
10k
150
1.4
C713 D711
D712
8.6
0.001 1SV214
C709
1SV214
R732
470p
C708
1k
2.2
C711 C710
10 0.001
4.7
L771
10µH
5V_DDS
L761
C772
C769 C774 C775 0.47µH
L762
0.001
0.1 0.001 0.001
10µH
Q771
3.6
DTC144TU C773
D771 R772 C767 4.7
0.1
DAN222 1k 0.001
C765
ULD
0.001
IC762
C764
C762
TC7S04F
0.1 8 1
VCC2 VCC1 0.001
C771
5 1 7 2
470p C777 OUT IN
2 6 3
0.001 SW2 IN
4 3 5 SW1 4
GND
R773 R766 C776
0.001
100k 2.2k
IC761
µPB1509GV
C763
R763
0.001
R765 220
1M
180mVpp
Q772
DTA144EU
UNLOCK:4.8
+5
+9
-5V
MEASUREMENT CONDITIONS
MULTIMETER:50k /V
OSCLLOSCOPE:20MHz
Display frequency:1295MHz
SUPPLY VOLTAGE:13.8V
modulation at TX:none
C571 C573 C575
L582
5p 2p 3p
8.2nH
C584
C572 C574
0.3p 12p 33p
C583 C585
L571 L572
2p 3p
8.2nH 6.8nH
R557
22
R553 C641 C642 C643
R684 C688 22 5p 2.5p 4p
100 10p
C644 C645
R554
22p 68p
R682
47
56
C686
47p L641 L642
C689
8.2nH
0.1 10nH
C685
R683
0.001
47k
C687
470p
3.8
Q681
2SC5107
0.75
MP501
7.7
Q751
R734
2SD2216
100
8V_2VCO
R751
220
R744
100
8.4
C734
C743
0.1 C756 C755
0.1 0.001
1
C754
C735
C744 47
0.001 D751
0.001
MA8082
R741
3.9k
R748 L743
C742
Q731 15 33nH
12p
2SC5107
C748
R746
2.5p
15 R750
C733 Q741
15
2p 6.6
2SC5107
C731 R742
C747
22p 1.5k
1.0
12p
C749
R733 C741
C732 12p
330 0.001
R743
22p
100 MAIN UNIT
1.7
(2)
1LO
C750 1LO
0.0047 2LO
2LO
C761
R762
0.001 12PS
100
12PS
DAT
DAT
CK
CK
C778
12DS
R764
0.001 12DS
56
12DR
12DR
12UL
12UL
R761 L751
CNTY
47k 27nH
CNTY
12C2
12C2
C753
+5
C751
2p C752 +5
Q761
22p
22p +9
2SC5107 +9
-5V
-5V
0.8
Ω