Adjustment Method - JVC KS-FX288 Service Manual

KS-FX288
QQ
3 7 63 1515 0

Adjustment method

Test Instruments reqired for adjustment
1. Digital osclloscope(100MHz)
2. Frequency Counter meter
3. Electric voltmeter
4. Wow & flutter meter
5. Test Tapes
VT724 ....................... for DOLBY level measurement
VT739 ............ For playback frequency measurement
VT712 .... For wow flutter & tape speed measurement
VT703 ..................... For head azimuth measurement
6. Torque gauge .................... Cassette type for CTG-N
Measuring conditions(Amplifier section)
Power supply voltage .............. DC14.4V (10.5 - 16V)
Load impedance ........... 4
Line out ............................................................ 20k
TE
L 13942296513
Frequency Band
FM
Band
AM
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1-12
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(mechanism adjustment)
(2Speakers connection)
50KHz step
87.5-108MHz
9KHz step
531-1602KHz
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8
Standard volume position
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.
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
FM stereo mode 1kHz,67.5kHz dev. pilot7.5kHz dev.
Output level 0dB(1 V,50
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3 6 7 1 3
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2 9 9 4 2 8
/open terminal)
1 5 0 5 8 2 9 9 4
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9 9
2 8 9 9