Kenwood TH 25 Service Manual

Page 1

TH25A/AT/E KENWO

SERVICE MANUAL

191987-12 PRINTED IN JAPAN
BS1-3253-OO(O)1573

(-ICDNTENTSI--~-1

. DISASSEMBLY FOR REPAIR ............................. 2
CIRCUIT DESCRIPTION ................................ 4
SEMICONDUCTOR DATA .............................. 10
DESCRIPTION OF COMPONENTS ......................... 14
PARTS LIST ........................................ 15
DISASSEBLY ....................................... 28
PACKING .......................................... 29
ADJUSTMENT ...................................... 30
PC BOARD VIEWS/CIRCUIT DIAGRAM
. AVR UNIT (X5873200 10) ............................ 34
IF UNIT(X58A3210-11) .......... ' .................... 35
APC UNIT (X58-3220- 10) ............................. 36
PLL UNIT (ma-3230.10) .................... 37
MIC AMP UNIT (XBQFBSOO-XX) ......................... 33
AP AMP UNIT (mg-3310.10) .......................... 39
FRONTEND UNIT (x59-3320-10) ....................... 4o
DRIVE UNIT (x593330-10) ........................... 41
SIGNALING UNIT (X52~3090-10) ...... 42
CONTROL UNIT (X5373080-XX) ........................ 43
TXERX UNIT (X57-3160-XX) .......................... 45
SCHEMATIC DIAGRAM ................................ 47
BLOCK DIAGRAM ................................... 49
LEVEL DIAGRAM ................................... so
TERMINAL FUNCTIONS ............................... 51
BC»9(BATTERY CHARGER) ............................ . 51
86-10 (COMPACT CHARGER) ........................... 52
(ac-11 (RAPID CHARGER) .............................. 53
BT~6 (AAA MANGANESE/ALKALINE BATTERY CA'SE) ......... 63
um (DC ADAPTER) .................................. 63
HMC»2 (HEAO SET WITH vox & PTT) ..................... 64
PB-5/6/7/8/9 (Ni-Cd BATTERY) .......................... as
8014/15/16 (SOFT CASE) ............................ as
SMC-31 (SPEAKER MICROPHONE) ...................... 68
Tsu-e (CTCSS UNIT) .................................. 69
MB-5 (MOBILE BRACKET) .............................. 71
. WR-1 (WATERPROOF CASE) ............................ 71
SPECIFICATIONS ............................ BACK COVER

. Photo is TH-25AT.

71

Page 2

TH-25A/AT/ E

DISASSEMBLY FOB REPAIR

all umbered parts in the illustration In nu erlca
er, starting with (0).

Remove

0rd

EXTRACTING TOOL (T-041)