Adjustment - JVC KD-A305J Service Manual

4.1

Adjustment

Test instruments required for adjustment
(1) Digital oscilloscope (100MHz)
(2) Digital tester
(3) Test Disc
(4) Extension cable : EXTGS004-26PL
Standard volume position
Balance and Bass &Treble volume : lndication "0"
Loudness : OFF
How to connect the extension cable for adjusting
Be sure to attach the het 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.
SECTION 4
ADJUSTMENT
Standard measuring conditions
Power supply voltage DC 14.4V(10.5 to 16V)
Load impedance 20K ohm (2 Speakers connection)
Dummy load
Exclusive dummy load should be used for AM, and FM.
For FM dummy load, there isa 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.
Extension cable
EXTGS004-26PL
(No.MA429<Rev.002>)1-17