JVC KW-NT1E, Service Manual

Page: 18 / 167

1-18 (No.MA453<Rev.003>)
SECTION 4
ADJUSTMENT
4.1 Test instruments required for adjustment
(1) Digital oscilloscope (100MHz)
(2) Digital tester
(3) Test Disc
(4) Extension cable : EXTXD001-50PF (CN403 - CN461)
EXTDV002-30P (CN351 - CN451)
EXTFP001-30P (CN302 - CN442)
EXTFP001-60PF (CN301 - CN421)
EXTFP001-42P (CN401 - CN681)
EXTNT001-30PF (CN921 - CN951)
(5) Extension stud : STDV001-3P
4.2 Standard measuring conditions
Power supply voltage DC14.4V(10.5 to 16V)
Load impedance 20K ohm (2 Speakers connection)
Output Level Line out 2.5V (Vol. MAX)
4.3 Standard volume position
Balance and Bass &Treble volume : lndication"0"
Loudness : OFF
4.4 Dummy load
Exclusive dummy load should be used for AM,and FM.
For FM dummy load, there is a loss of 6dB between SSG
outputand antenna input.
The loss of 6dB need not be considered sincedirect reading of
figures are applied in this working standard.
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.
CN403
STDV001-3P
STDV001-3P
EXTNT001-30PF
Original wire
EXTFP001-42P
CN681
CN401
CN921
CN951
to CN422
to CN421
CN461
CN451
EXTXD001-50PF
EXTDV002-30P
CN351
CN302
CN301
EXTFP001-30P
EXTFP001-60PF