JVC KS-F171 - SECTION 3

KS-F171
1-12 (No.49774)
SECTION 3
Adjustment method
AM mode 999kHz/62dB,INT/400Hz,30%
modulation signal on recieving.
FM mono mode 97.9MHz/66dB,INT/400Hz,22.5kHz
deviation pilot off mono
Band
Test Instruments reqired for adjustment  Standard volume position
 Measuring conditions(Amplifier section)
 Frequency band
1. Digital oscilloscoe(100MHz)
2.Frequency counter meter
3.Electric voltmeter
4.Wow & flutter meter
5.Test tapes
6.Torque gauge...................Cassette type for CTG-N
(Mechanism adjustment)
VT724.......................for DOLBY level measurement
VT739............For playback frequency measurement
VT712....For wow flutter & tape speed measurement
VT703.....................For head azimuth measurement
Balance and Bass, Treble volume, Fader
:Center(Indication"0")
Loudness,Dolby NR,Sound,Cruise:Off
Volume position is about 2V at speaker output with
following conditions,Playback the test tape VT721.
Power supply voltage.............. DC14.4V(11V - 16V allowance)
Load impedance............ 4
Ω (4 Ω to 8 Ω allowance)
Line out level/Impedance..............1.0V/20k
Ω load (250 nWb/m)
FM stereo mode 1kHz,67.5kHz dev.pilot 7.5kHz dev
Output level 0dB(1
µV,50Ω/open terminal)
FM: 87.5 MHz to 107.9 MHz
AM : 530 kHz to 1710 kHz