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The Harman Kardon
Model TU-940 Manual A
AM/FM STEREO DIGITAL RDS TUNER
TU 940 RDS Tuning
Remote sensor Display PTY
LOCAL DX RDS PTY RT CT TA EON TUNED STEREO
MONO TUNINGRESET
P
1 2 3 4 5 Direct Character
RF LEVEL
STANDBY CLOCK
NARROW
WIDE TIMERON OFF SLEEPAUTOMEMORY
SCAN
6 7 8 9 0
Auto/Man RF Mode FM Mode
Power Memory Tune/Pst Pst Scan
Band IF Band Display
Mode
CONTENTS
LEAKAGE TEST....................................2 GENERAL UNIT EXPLODED VIEW.........21
SPECIFICATIONS..................................3 PRINTED CIRCUIT BOARDS.................22
CONTROL AND FUNCTIONS..................4 ELECTRICAL PARTS LIST.....................24
BLOCK DIAGRAM.................................7 IC FUNCTIONAL BLOCK DIAGRAM........32
DISASSEMBLY PROCEDURES...............8 PACKAGE..........................................33
CIRCUIT DESCRIPTION.......................13 WIRING DIAGRAM..............................35
ALIGNMENT PROCEDURES.................16 SCHEMATIC DIAGRAMS......................36
harman/kardon
Parts and Service Office
80 Crossways Park West, Woodbury, N.Y. 11797
Printed in Korea
LEAKAGE TEST
Before returning the unit to the user, perform the model WT 540A or use alternate method as follows:
following safety checks: plug the power cord directly into a 230-volt AC
1. Inspect all lead dress to makes certain that leads receptacle ( do not use an isolation transformer for
are not pinched or that hardware is not lodged this test.). Using two clip leads, connects a 1500
between the chassis and other metallic parts in the ohm, 10-watt resistor paralleled by a 0.15