Alinco DJ-493 User Manual

DJ-493
DJ-496/438
Service Manual
CONTENTS
SPECIFICATIONS
1) G E N ER A L.............................................................................2
2) TR ANSM IT TE R ...................................................................2
3) R EC E IVE R ............................................................................2
CIRCUIT DESCRIPTION
1) Receiver S ys tem ............................................................3, 4
2) Transmitter System .............................................................4
3) PLL Synthesizer C irc u it ............................................... 4, 5
4) CPU and Peripheral C ircuits ............................ . ......... 5, 6
5) M38267M8L252GP (XA0725)..................................... 6 -8
SEMICONDUCTOR DATA
1) NMJ2070M T 1 (XA0210) ..................................................9
2) AT24C16N-10SI-2.7TER (X A0368)................................9
3) M5222FP-600C (XA0385) ............................................. 10
4) TK14521M TL (X A05 15 ).................................................. 11
5) M64076AGP (XA 0 352 ) ................................................... 12
6) NJM2904V-TE1 (XA0573) ............................................. 12
7) NJM2902V-TE1 (XA0596) ............................................. 12
8 ) S-81350HG-KD-T1 (XA0724) ....................................... 13
9) S-80845ALMP-EA9-T2 (XA0620) ................................ 13
10) 2SK2975 (XE0038)........................................................... 13
11) Transistor, Diode, and LED Ontline Drawings ........... 14
12) LCD Connection (E L0044)............................................ 14
SNCO, inc.
EXPLODED VIEW
1) Front V ie w ............................................................................15
2) R ea rV ie w ............................................................................16
PARTS LIST (DJ-493)
MAIN U n it .................................................................... 17-21
Mechanical P a rts .............................................................. 22
Packing Parts......................................................................22
PARTS LIST (DJ-496)
MAIN U n it.....................................................................23-27
Mechanical P a rts...............................................................28
Packing Parts......................................................................28
ADJUSTMENT
1) Required Test E quipm ent ........................................ 29, 30
2) Adjustment M ode ....................................................... 31 -34
PC BOARD VIEW
MAIN U nit.....................................................................35, 36
SCHEMATIC DIAGRAM ............................................. 37, 38
BLOCK DIAGRAM ........................................................ 39, 40
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Alinco DJ-493 Specifications

General

Mode	FM
Channels	200
Receiver System	Double Conversion Superheterodyne
Current drain TX	1.5A
Waterproof	IP54
Type	Handheld
Voltage	7.4V