Kenwood TH-25A Service Manual
2-m fm handheld transceiver
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Also See for TH-25A:
- Service manual (73 pages) ,
- Instruction manual (24 pages) ,
- Instruction manual (83 pages)
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KENWOOD
SERVICE MANUAL
©1987-12 PRINTED IN JAPAN
B51-3253-00(0)1573
+——_——
CONTENTS!
DISASSEMBLY
FOR
REPAIR
....
2...
00000
2
CIRCUIT DESCRIPTION
1.0.2... cc
cece
ccc cence eens 4
SEMICONDUCTOR DATA
.......-.000ccceeeeee
cee eeeeee 10
DESCRIPTION OF COMPONENTS ..........200000-0002
0002 14
PARTS UIST: fos i0 bale ace dencivy Ba cee cee trgtid etl bien obenub 15
DISASSEBLY ......... 00sec ees c eee e cee et enneeeueeees
28
PACKING:
95-35 sets cece wate
dade Bala idaihs auch. Gide eats 29
ADJUSTMENT
«io eis ei
etait ean ere
ace eat
ee, Ra eS
Bue
gs
30
PC BOARD VIEWS/CIRCUIT DIAGRAM
AVR UNIT (X58-3200-10)
oe
cee cece e eens 34
IF UNIT (X58-3210-11) 2.00.2. 0 ee S t e s
Sateen ite ten eehaeresd
35
APC UNIT (X59-3220-10) .. cece cece ee tees een e ee neeees
36
PLILUNIT: (X58°3230210):~
cies
i rece ecees cee lekrats Ph voreck eters
37
MIC AMP UNIT (X59-3300-XX) 0. cee eee eee
eee eee es 38
AF AMP UNIT (X59-3310-10) oo eve cece eee erence ees
39
FRONT-END UNIT (X59-3320-10) ..
cece cee
eee renee
40
DRIVE UNIT (X50-3330-10) . 2...
cee ee eee
ees
41
SIGNALING UNIT (X52-3090-10) cc. ee cece cece eee
eees
42
CONTROL UNIT (X53-3080-XX) oo.
eee
eee eee
43
TX-RX UNIT (X57-3160-XX) vec cece eee e eee e eee neeeee
45
SCHEMATIC DIAGRAM ........0
0-0-0002 e eee eee ee eee 47
BLOCK DIAGRAM
........ 0000 cece
cence eee eeee
49
LEVEL DIAGRAM
2.0... cece ccc eee
ete
eet teens
50
TERMINAL FUNCTIONS 0.00... ce ccc
eeu eee eee e eens
51
BC-9 (BATTERY CHARGER)
........---.-200ecceeeeeeeee - 51
BC-10 (COMPACT
CHARGER)
.......---0-.0-
000 ee eee eee
52
BC-11 (RAPID CHARGER) ........-.
000 -cc cece eee ee eeee 53
BT-6 (AAA MANGANESE/ALKALINE BATTERY CASE) .........
63
DOITA(DG:ADAPTER) 4.6 oie
5.2
28
Se
es
8
a
ol
ete
63
HMC-2 (HEAD SET WITH VOX & PTT)
«0... ee eee eee ees 64
PB-5/6/7/8/9 (Ni-Cd BATTERY)
«2.02.00
00 0000 cece ee ceeeee 66
SC-14/15/16 (SOFT CASE) 22... eee eens
68
SMC-31 (SPEAKER MICROPHONE) ...................
00000 68
TSU-6:(CTCSS
UNIT)
22:2. cee
ee
a
ae
ee
Eee
69
MB-5 (MOBILE BRACKET)...
000 ccc eee e eee nee e eens
71
WR-1 (WATERPROOF CASE) ..........-0
00sec ee ee ceeees "1
SPECIFICATIONS 1... 0.0000 cece eee eee e eee ee BACK COVER
Photo is TH-25AT.
71
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