Alinco DR-620, Service Manual

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DR-620
Service Manual
CONTENTS
S P E C IF IC A T IO N S
1) G E N E R A L .............................................................................2
2) T R A N S M IT T E R ...................................................................2
3) R E C E IV E R ........................................................................... 3
C IR C U IT D E S C R IP T IO N
1) V H F R e ce p tio n ....................................................................4
2) UHF R ecep tio n ....................................................................5
3) FM R ecep tio n .......................................................................5
4) V /V (V H F -V H F ) Dual R eception......................................6
5) U/U (U H F-U H F) Dual R eception .................................... 6
6) V H F Squelch C o n tro l......................................................... 6
7) UHF Squelch C ontrol......................................................... 6
8) Transmit Signal P a th .......................................................... 7
9) V H F Transmit Signal P a th .................................................7
10) UHF Transmit Signal P a th .................................................7
11) V H F Tx A P C C irc u it............................................................7
12) UHF Tx A P C C irc u it............................................................8
13) V H F PTT Circuit...................................................................8
14) UHF PTT C irc u it..................................................................8
15) V H F P L L ................................................................................ 8
16) UHF P L L ................................................................................ 9
17) Power-on C irc u it................................................................. 9
S E M IC O N D U C T O R DATA
1) M 5218FP (X A 0 0 6 8 )......................................................... 10
2) NJM 78L05UA (XA0098) ................................................. 10
3) NJM 7808FA (X A 0 1 0 2 ).................................................... 10
4) T C 4S 66F (X A 0 1 1 5 )......................................................... 11
5) A N 8010M (X A 0 1 1 9 ).........................................................11
6) BU4052BF (X A 0 2 3 6 )....................................................... 11
7) TA75S01F (X A 0 3 3 2 )........................................................ 12
8) TC 4W 53FU (X A 0 3 4 8 )..................................................... 12
9) TA31136FN (X A 0 4 0 4 )..................................................... 12
10) LA4425A (X A 0 4 1 0 ).......................................................... 13
11) N JM 2904V (X A 0 5 7 3 )....................................................... 13
12) NJM2902V-TE1 (XA0596) ............................................. 13
13) S -80845A LM P -E A 9-T2 (X A 0 6 2 0 )............................... 14
14) T K 10931V (X A 0 6 6 6 )........................................................ 14
15) B R 24C 64F-E 2 ( X A 0 6 6 9 )............................................... 15
16) L C 7 5 8 8 4 W (X A 0 8 9 9 ) ..................................................... 16
17) M 51132FP (X A 0 9 0 0 )....................................................... 17
18) M 30620FCAG P (X A 0 9 1 3 /X A 0 9 4 9 )...................... 17~19
19) M 38503M 2H 667F P (X A 0 9 1 4 )............................... 20~21
20) M 64076A G P (X A 0 9 1 5 )................................................... 22
21) S-816A 50A M C (X A 0 9 2 5 )............................................... 23
22) N JM 78M 05D L1A ( X A 0 9 4 7 ) .......................................... 23
23) Transistor, Diode, and LED Outline D raw ings.... 24~25
24) LCD C o n n e ctio n ........................................................2 6 ~2 7
E X P L O D E D V IE W
1) Front V ie w ........................................................................... 28
2) Bottom V ie w ....................................................................... 29
PARTS L IS T
Front U n it.................................................................... 30~31
LED U n it..............................................................................31
Main U n it..................................................................... 31~42
Mechanical P a r ts .............................................................. 42
Packing P arts..................................................................... 42
Accessories (Screw S e t).................................................42
A D J U S T M E N T
1) Adjustment S p o t...............................................................43
2) Adjustment M o d e .............................................................. 44
3) V H F Adjustment Specification.......................................45
4) UHF Adjustment S pecification..................................... 46
5) V H F Test Specification....................................................47
6) UHF Test Specification....................................................48
PC B O A R D V IE W
1) Front Side A ........................................................................49
2) Front Side B ........................................................................49
3) Main Side A ........................................................................50
4) Main Side B ........................................................................ 51
F R O N T S C H E M A T IC D IA G R A M
................................... 52
M A IN S C H E M A T IC D IA G R A M ........................................ 53
F R O N T B L O C K D IA G R A M
.............................................. 54
M A IN B L O C K D IA G R A M ................................................... 55
ALINCO,INC.