Adjustment - JVC KD-LH3101 Service Manual

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3.1 Adjustment method
Test instruments required for adjustment
(1) Digital oscilloscope (100MHz)
(2) Electric voltmeter
(3) Digital tester
(4) Tracking offset meter
(5) Test Disc JVC :CTS-1000
(6) Extension cable for check
EXTSH002-22P × 1
Standard volume position
Balance and Bass &Treble volume : lndication"0"
Loudness : OFF
How to connect the extension cable for adjusting
Caution:
Be sure to attach the heat sink and rear bracket onto the power amplifier IC and regulator IC 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.
The cardboard is cut in a suitable size.
uses for the insulation stand of mechanism.
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L 13942296513
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Heat sink
(Attach the heat sink
using the two screws.)
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Front chassis assembly
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(Attach the front chassis assembly using the two screws.)
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SECTION 3 8

Adjustment

Standard measuring conditions
Power supply voltage
Load impedance
Output Level
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.
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3 6 7 1 3 1 5
EXTSH002-22P
co
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9 4 2 8
DC14.4V(11 to 16V)
20KΩ (2 Speakers connection)
Line out 2.0V (Vol. MAX)
0 5 8 2 9 9 4 2 8
Extension cable
Rear bracket
(Attach the rear bracket
using the screw.)
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(No.49843)1-25
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