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© 2004-10 PRINTED IN JAPAN
B51-8556-20 (N) 1219
VHF FM REPEATER
TKR-750
SERVICE MANUAL
VHF FM REPEATER TKR-750
Front panel
(A62-0934-03)
Knob (DC source)
(K29-9106-04)
Key top
(K29-5460-02)
Knob (Volume)
(K29-5389-03)
Modular jack
(E08-0877-05)
Antenna cable (N)
(E30-3419-05)
Antenna cable (BNC)
(E30-3418-05)
TEST/SPKR connector assy
(E37-0913-05)
D-sub cable assy
(E37-0904-05)
DC backup terminal
(E70-0402-05)
DC cord (Ext DC in)
(E30-3414-05)
Fuse (Blade, 15A/32V)
(F05-1537-05) x 2
GENERAL ................................................................. 2
SYSTEM SET-UP ..................................................... 2
OPERATING FEATURES ......................................... 3
REALIGNMENT ........................................................ 4
INSTALLATION ........................................................ 5
MODIFICATION ....................................................... 8
DISASSEMBLY FOR REPAIR ................................ 10
CIRCUIT DESCRIPTION ......................................... 11
SEMICONDUCTOR DATA ..................................... 18
COMPONENTS DESCRIPTION ............................. 20
PARTS LIST ............................................................ 22
EXPLODED VIEW .................................................. 34
PACKING ................................................................ 36
ADJUSTMENT ....................................................... 37
CONTENTS
TERMINAL FUNCTION ......................................... 46
INTERCONNECTION DIAGRAM ........................... 50
PC BOARD
FINAL UNIT (X45-373X-XX) ............................. 52
DISPLAY UNIT (X54-3330-21) .......................... 56
TX-RX UNIT (X57-695X-XX) (A/2) ................... 60
TX-RX UNIT (X57-695X-XX) (B/2) ................... 64
RX VCO UNIT (X58-4780-10) ........................... 68
TX VCO UNIT (X58-4790-10) ............................ 69
SCHEMATIC DIAGRAM ........................................ 70
BLOCK DIAGRAM .................................................. 83
KES-5 (EXTERNAL SPEAKER) .............................. 86
SPECIFICATIONS ................................................... 87
REVISED II
This service manual applies to products 60700001 or subsequent serial number.
In terms of the products with the serial numbers earlier than 60700001, refer to the TKR-750 service manual as per part number
B51-8556-10 and B51-8661-00.