KD-LH70R
(No.49803)1-19
SECTION 3
Adjustment
3.1 Adjustment method
Test instruments required for adjustment
1. Digital oscilloscope (100MHz)
2. AM Standard signal generator
3. FM Standard signal generator
4.
Stereo
modulator
5.
Electric
voltmeter
6.
Digital
tester
7. Tracking offset meter
8. Test Disc JVC :CTS-1000
9. Extension cable for check
EXTSH002-22P
1
Standard measuring conditions
Power supply voltage DC14.4V(11~16V)
Load impedance
20Kohm(2 Speakers connection)
Output Level
Line out 2.0V (Vol. MAX)
Standard volume position
Balance and Bass &Treble volume : lndication"0"
Loudness : OFF
Frequency Band
FM 87.5MHz ~ 108.0MHz
AM (MW) 522kHz ~ 1620kHz
(LW) 144kHz ~ 279kHz
Dummy load
Exclusive dummy load should be used for AM,and FM. For
FM dummy load,there is a loss of 6dB between SSG output
and antenna input.The loss of 6dB need not be considered
since direct reading of figures are applied in this working
standard.
How to connect the extension cable for adjusting
The cardboard is cut in a suitable size.
uses for the insulation stand of mechanism.
EXTSH002-22P
Extension cable
Caution:
Be sure to attach the heat sink and rear
bracket onto the power amplifier IC301
and regulator IC901 respectively,
before supply the power.
If voltage is applied without attaching
these parts, the power amplifier IC
and regulator IC will be destroyed
by heat.
Heat sink
(Attach the heat sink
using the two screws.)
Rear bracket
(Attach the rear bracket
using the screw.)
Front chassis assembly
(Attach the front chassis assembly using the two screws.)
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