Kenwood
TK-940
service manual
Install
Jumper setup charts
Time-Out Timer
Scan indicator
DC Power and wiring
KDD-4assembly
Connection procedure
Panel Tuning Mode
Testing
Power supply circuit
Page 26
Page 25
Page 27
Image 26
Page 25
Page 27
Contents
$@$, ~\, !? .- $LU~CO .i@&4170-XX
FX-R%~?ONIT1x57-4590-XXI BIZ
Testing
General
Antenna
DC Power and wiring
Installation Planning Control Stations 5-1. Antenna system
Radio
System SET-UP
Operating Features
Delete 1 indicator
Front Panel Displays and Indicators System display
Scan indicator
Busy indicator
Details of Features
SystemIGroup Revert
Time-Out Timer
TEL ID Codes TEL Mode
Last call revert
Transpond
Free System Ringback
System Search
Preferred System Revert
Audible User Feedback Tones
Delay tone
Auto TEL
Proceed tone
Conventional System Operation
Transmit disable receive-only channels
Call indicator, alert tone
Talk-around
Continuous
Horn Alert
Non-continuous
System Scan Type Fix system scan
Ir 4-1.lntroduction
Data Program Mode
Transceiver Programming
KPG-4 Description Optional PC programming interface cable
Description of Each Modes
Clone Mode Figure
Dealer mode
System key
Group key
Panel Tuning Mode
Volume key
Scan key
Installing the Signaling Unit KDD-4 Dtmf Option
KDD-4assembly
Installation
Installing the KDD-4 in the transceiver
Monireset ON-HOOK OFF-HOOK JU2
Accessory Connection Cable KCT-19 Option
Jumper setup charts
JU3 JUJ Mute Urimute
Terminal function
GND
Ignition Sense Cable KCT-18 Option
Connecting the KCT-18 to the transceiver
R5 and R6 setup chart
Modifying the transceiver
KES-3 Option
Connection procedure
External Speaker
KES-4 Option
Fitting the Control Panel Upside Down
Page
Page
Page
Page
MCF ANT AMP If System -AMPSP
RF unit
If unit
PLL MIC AMP
Audio amplifier unit Squelch circuit
Microphone amplifier
Vcxo
PLL
Buff IRF AMP
DET Invsw
Control unit
Horn control
Power supply circuit
PLL data output
CPU
LCD Assembly
Power switch circuit
Tone generator
Block diagram
Terminal connection diagram
Test
Terminal connection diagram Terminal function
Eeprom AT24C02NlOS12.7 TX-RX Unit IC201
DEC DIN
Microprocessor 78312AGF3563BE TX-RX Unit IC209
Microprocessor 75308BGK740BE9 LCD Assy IC2
TEST2 TEST1
CLK
Output a
DTA114EU--DC
NJM78L05UA
Eeprom
DTA114YU
LCD Assy B38-0731-05
Cc4riq
Rating wattage
TK-940/941
Kusa
Y4U
Tapttte Screw A T Head T a P T T I E Sciiewpannel Screw SET
Insulating Tube ANT Cable Speaker 16 QHM 1W Micrqphqnb
Icpqwer Modulej .. Drive TX-RX
W w w W W 1 W l
U U P F
I P C X E D C
Uuupi
U P F
R c
Hesbnatuh
ES $j
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Pattern
Page
Foil side
IC20E
Dtci 14EU DTCI44EU
Page
Page
Component side
PC Board View
~ o h ~ o n esident
Page
TX-RX Unit TX-RX Section X57 4590 XX A/2 11 TK A1 PLL
O w m o d
+4- aLIE- - aIz23z=
Page
Ccrl--------ASSYDISPLAY S~ECTION838
Eqqzj
Top
Page
Image
Contents