KD-S743R/KD-S741R
(No.49810)1-23
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)
How to connect the extension cable for adjusting
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.
Standard volume position
Balance and Bass &Treble volume : lndication"0"
Loudness : OFF
BBE : OFF
Frequency Band
FM 87.5MHz~108.0MHz
MW 522kHz~1620kHz
LW 144kHz~279kHz
EXTSH002-22P
Extension cable
Heat sink
Rear bracket
The cardboard is cut in a suitable size.
uses for the insulation stand of mechanism.
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.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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