JVC KW-XG500J, Service Manual

Page: 14 / 41

1-14 (No.MA345)
SECTION 4
ADJUSTMENT
4.1 Adjustment method
4.1.1 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 x 1
4.1.2 Standard measuring conditions
Power supply voltage : DC14.4V(11 to 16V)
Load impedance : 20K.(2 Speakers connection)
Output Level : Line out 2.5V (Vol. MAX)
4.1.3 Standard volume position
Balance and Bass &Treble volume : lndication"0"
Loudness : OFF
4.1.4 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 an-
tenna input.The loss of 6dB need not be considered since direct
reading of figures are applied in this working standard.
4.1.5 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.
EXTSH002-22P
Extension cable