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ICOM i910H Instrukcja Użytkownika Strona 8
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2 - 3
2-2 UX-910 (OPTIONAL UNIT)
• TOP
VIEW
• BOTTOM VIEW
P
ower module IC
(IC21:
M57762-02)
1st LO
VCO circuit
PLL IC
(IC501:
TB31242)
DDS IC
(IC661:
SC-1246A)
RF pre-amplifier
(Q281:
NE34018)
P
ower supply circuit
for A
G-1200
Q72:
DTC144EU
Q73, Q74:
2SC2712
RF amplifier
(Q271:
2SC5454)
YGR amplifier
(IC141:
µ
PC1878G)
TX 1st mixer
(IC131:
µ
PC8163TB)
RX 1st mixer
(IC241:
µ
PC2721)
TX 1st IF amplifier
(IC111:
µ
PC2709)
RX 2nd mixer
(Q221:
3SK166)
TX 2nd mixer
(D82:
HSB88WS)
2nd LO
VCO circuit
P
ower supply circuit f
or AG-1200
(Q71:
2SD1801)
Pre-drive amplifier
(Q36:
2SK2354)
2nd IF amplifier
(Q81:
2SC2712)
Divider
(IC610:
TC7W74FU)
Reference amplifier
(IC601:
TC7SU04F)
Drive amplifier
(Q38:
2SK2855)
1
2
3
4
5
6
7
8
9
10
11
12
13
...
77
78
VHF/UHF ALL MODE TRANSCEIVER
1
ORDERING PARTS
2
REPAIR NOTES
2
INTRODUCTION
2
TABLE OF CONTENTS
3
SECTION 1 SPECIFICATIONS
4
■ RECEIVER
5
SECTION 2 INSIDE VIEWS
6
• PA UNIT
7
2-2 UX-910 (OPTIONAL UNIT)
8
WARNING!
10
RECOMMENDATION:
11
CR-293 soldering
12
SECTION 4 CIRCUIT DESCRIPTION
13
4-2 TRANSMITTER CIRCUITS
15
4-3 PLL CIRCUITS
17
CAUTION !
19
5-2 PLL ADJUSTMENTS
20
5-3 FREQUENCY ADJUSTMENT
20
5-4 RECEIVER ADJUSTMENTS
22
100 msec
24
5-5 TRANSMITTER ADJUSTMENTS
26
5-6 SOFTWARE ADJUSTMENT
30
5-7 UX-910 ADJUSTMENTS
36
SECTION 6 PARTS LIST
40
[FUNC BOARD]
42
[VR-A BOARD]
42
[VR-B BOARD]
42
[PLL UNIT][RIT BOARD]
43
[JACK BOARD]
43
[MIC BOARD]
43
[PLL UNIT][PLL UNIT]
44
[MAIN UNIT][PLL UNIT]
47
[MAIN UNIT][MAIN UNIT]
48
[PA UNIT][PA UNIT]
56
[DRV BOARD][PA UNIT]
63
[BARISTOR-A BOARD]
63
[VARISTOR-B BOARD]
63
[BARISTOR-C BOARD]
63
6-2 UX-910
64
SECTION 7 MECHANICAL PARTS
70
NI: Nickel NI-ZU: Nickel-zinc
71
BS: Brass ZK: Black
71
• TRANSISTORS AND FET’S
72
• DIODES
74
SECTION 9 BOARD LAYOUTS
75
• BOTTOM VIEW (VR-B BOARD)
76
Phone : 06 6793 5302
77
Fax : 06 6793 0013
77
S-13714HZ-C1
78
© 2001 Icom Inc
78
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