Harman kardon 150 plus service manual

Page 1

The Harman-Karclon
Model 150+

' AM [Stereo FM
Multichannel Receiver

Technical Manual -

harman/kardon '

96¢ A/ewoxz/
€057: S/c.

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ALIGNMENT PROCEDURES

AM IF AMPLIFIER ALIGNMENT PROCEDURE

INSTRUMENT: AM Generator (With Scope)

OUTPUT 0F GENERATOR: Connect to TC5 (0n V.C. - AM OSC) Terminal 455KC
Adjust IFT51 for Maximum '

NOTE: Keep Signal as low as possible when adjusting.

AM ALIGNMENT PROCEDURE

INSTRUMENT: AM Signal Generator, AC VTVM Bi Oscilloscope
NOTE: Set Function Switch to AM"
Set Mode Switch to "MONO
Set Volume Control to MINIMUM"
Input Signal must be kept as low as possible to avoid A.G.C action

Signal Generator '
Steps Tuning D'al VTVM & Scope Adjustment Adjust for
Coupling Frequency Setting Connection
Frequency L53 lAM OSC
1 515KHZ Minimum C0")
Frequency TC6 (AM OSC
2 1650 Maximum TRIMMER)
3
L51 (BAR ANT
The Test Loop BOOKHZ GOOKHZ TRIMMER)
4 (400HZ, 30%
about 60 cm (2 ft.) . L52 (AM RF ,
Modulation) L Channel Tape C - MaXImum
away from AM Bar _ 0' .
(L St'ck) A Out Terminal Amplltude
°°p ' ' 1400KH2 1400KHZ TCS (BAR ANT
5 tenna (400Hz 30% TRIMMER)
M ', TC7 (AM RF
odulation) TRIMMER)
*6
IOOOKHZ IOOOKHZ 0.225v IRMSI
R
7 (400Hz, 30% V 52 Output
Modulation)
Generator Tuning Meter
8 Output 0.1V VR53 FUII Scall
*3 7 Repeat Steps 1 and 2 until no further improvement is notice
*6 Repeat Steps 4 and 5 until no further improvement is notice

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