Kenwood TH-K4AT Service Manual

430MHz FM TRANSCEIVER
TH-K4AT/K4E
SERVICE MANUAL
Helical Antenna
(T90-1019-25)
Knob
(PTT/LAMP/MON)
(K29-9274-03)
Key top (16key)
(K29-9272-02)
TH-K4AT
DISASSEMBLY FOR REPAIR ................................... 2
CIRCUIT DESCRIPTION ............................................ 6
SEMICONDUCTOR DATA ...................................... 14
COMPONENTS DESCRIPTION .............................. 15
PARTS LIST ............................................................. 17
EXPLODED VIEW .................................................... 23
PACKING ................................................................. 25
ADJUSTMENT ........................................................ 27
TERMINAL FUNCTION ........................................... 43
PC BOARD
TX-RX UNIT (X57-675X-XX) (A/3) ................... 44
TX-RX UNIT (X57-675X-XX) (B/3),(C/3) .......... 48
Knob (ENC)
(K29-5159-03)
Knob (VOL)
(K29-5150-03)
Front glass
(B10-2746-03)
Cap
(SP/MIC/DC IN)
(B09-0675-03)
Cabinet assy
(16key)
(A02-3822-23)
CONTENTS
©
2003-9 PRINTED IN JAPAN
B51-8660-00 (S) 497
Helical Antenna
(T90-1019-25)
Knob
(PTT/LAMP/MON)
(K29-9274-03)
Key top (4key)
(K29-9276-02)
TH-K4E
SCHEMATIC DIAGRAM .......................................... 50
LEVEL DIAGRAM .................................................... 55
BLOCK DIAGRAM ................................................... 56
BC-21 (WALL CHARGER) ....................................... 58
PB-43N (Ni-MH BATTERY PACK) .......................... 58
BT-14 (BATTERY CASE) ......................................... 59
PG-4Y (PROGRAMMING INTERFACE CABLE) ..... 59
MCP-1A (MEMORY CONTROL PROGRAM) ......... 59
SPECIFICATIONS ................................. BACK COVER
Knob (ENC)
(K29-5159-03)
Knob (VOL)
(K29-5150-03)
Front glass
(B10-2746-03)
Cap
(SP/MIC/DC IN)
(B09-0675-03)
Cabinet assy
(4key)
(A02-3823-23)