Alpine 7619R - Page 11

(4) Adjustment Procedures
s 98.1MHz, 72dB
: ieee igure.8 |” avid, OFF)
,
Front
(1)] Figure 9 98.1MHz
.
Output
Noise Level
2 Adjustment
,
Front
(2)| Figure 9 (Mod. 400Hz, 98.1MHz
Output
Dev. 22.5kHz)
98.1MHz, 27dB
Seek Stop :
: Figure (Mod. 400Hz, 98.1MHz
Adjustment
Dev. 22.5kHz)
MHz, 7
vco
.
98
z,
72dB
:
: Figure 11 (Mod. 400Hz, 98.1MHz
Adjustment P.
Dev. 22.5kHz)
Stereo
; 98.1MHz, 72dB
5 Separation ; (Stereo Mod Saath Front
Adjustment Piguet? Ten eatn : Bees Output
,on
(Leh) pee
Stereo
98.1MHz, 46dB
Blend : Front
; Figure 12 (Stereo Mod, 98.1MHz
Adjustment (eh adiy) Output
(Lch) cd
98.1MHz, 72dB
;
Front
Figure 12 (Stereo Mod, 98.1MHz
Output
Rch, only)
98.1MHz, 46dB
Figure 12 (Stereo Mod 98.1MHz Eon
2 ‘ Output
Rch, only)
_
a Pe
Dial Control
Adjustment
T2101 for 04 30mV.
98.1MHz, 72dB
(Mod. 400Hz,
Dev. 22.5kHz)
98.1MHz, - 19dB
Adjust VR204 (VOLUME) to obtain 2V
output This value is OdB.
Adjust VR2102°to 30+5dB output at SG
level minimum.
Adjust VR2101 to obtain 27+5dB at T.P.3
output.
= oO
Adjust VROO2 to read 19+0.05KHz on
Counter at T.P.4.
Adjust VR0O3 for Rch output to be
minimum, and confirm Lch and Rch output
level difference is more than 25dB.
Adjust VROO4 for Lch and Rch output level
difference to be 8dB.
Stereo
Separation
Adjustment
(Rch)
Proceed same adjustment under step 5 by
alternating Lch and Rch.
Stereo
Blend
Adjustment
(Rch)
Proceed same adjustment under step 6.
Adjust VROO1 so that the waveform of
oscilloscope becomes maximum as shown in
figure below.
RDS
(Sencitivity)
Adjustment
98.1MHz, 72dB
(RDS : ON,
Mod: 0.4%)
7619R