Harman kardon 100 plus service manual

Page 2

ALIGNMENT PROCEDURES

AM IF AMPLIFIER ALIGNMENT PROCEDURE

INSTRUMENT: AM Generator (with Scope)
OUTPUT OF GENERATOR: Connect to TCS (On V,C. - AM 050) Terminal, Frequency = 455 KHz.

Adjust IFT51 and IFT52 as follows: -
Adjust "B" for Maximum
NOTE: Generator Signal must be kept as low as possible to avoid A.V.C. action. B
AM ALIGNMENT PROCEDURE

INSTRUMENT: AM Signal Generator, AC VTVM 8L 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.V.C. action

' | G t '
Steps Signa enera or Tuning. D'al VTVM & Scope Adjustment Adjust for
Coupling Frequency Setting Connection
L52
1 515KH2 F'Fluency
Minimum
2 1650KHz Freqf'encv T05
Maxvmum
*3
OKH
The Test Loop GOOKHZ 60 1 L51
4 b t 60 m (2 n) 00" 30% (Bar Am)
a ou f c M B Modulation) '- Channel Tape Maximum
ail/av :wsA ar Out Terminal Amplitude
: °°'° c ' 1400KH2 1400KHz
5 ma (400H2, 30% T04
Modulation)
*6
7 TOOOKHZ 1000KHZ VR52 0.225V (HMS)
(400Hz. 30% Output
Modulation)
Generator Signal Meter
R 1
8 Output 0.1V V 5 Full Scale
*3 Repeat Steps 1 and 2 until no further improvement is noticed.
*5 Repeat Steps 4 and 5 until no further improvement is noticed.