Adjustment - JVC KD-AHD69J Service Manual

4.1 Test instruments required for adjustment
(1) Digital oscilloscope (100MHz)
(2) Digital tester
(3) Test Disc JVC :CTS-1000
(4) Extension cable for check
EXTSH002-22P x 1
4.2 Standard measuring conditions
Power supply voltage DC14.4V(10.5 to 16V)
Load impedance 20K.(2 Speakers connection)
Output Level Line out 2.5V (Vol. MAX)
4.5 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.
1-16 (No.MA468<Rev.001>)
SECTION 4

ADJUSTMENT

4.3
4.4
Extension cable
EXTSH002-22P
Standard volume position
Balance and Bass &Treble volume : lndication"0"
Loudness : OFF
Dummy load
Exclusive dummy load should be used for AM,and FM.
For FM dummy load, there is a loss of 6dB between SSG
outputand antenna input.
The loss of 6dB need not be considered sincedirect read-
ing offigures are applied in this working standard.