Philips ST-D777ES, Руководство по обслуживанию

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15
Stereo and Tuned Level Adjustment
Setting:
Procedure:
1. Tune the set to 98 MHz.
2. Adjust RV203 to the point (moment) when the “STEREO” and
“TUNED” indicators will change from going off to going on.
FM Signal Level Adjustment
Setting:
Procedure:
1. Tune the set to 98 MHz.
2. Press
[DISPLAY]
button to display the digital signal, then adjust
RV202 to be display as “Signal 70dB”.
set
FM RF SSG
FM ANTENNA (75
Ω
)
Modulation : Stereo Standard signal
Output level : 18
µ
V (25dB) (at 75
Ω
open)
set
FM RF SSG
FM ANTENNA (75
Ω
)
Modulation : Stereo Standard signal
Output level : 3mV (76dB) (at 75
Ω
open)
Stereo Separation Adjustment
Setting:
Procedure:
L-CH Stereo separation :
A
–
B
R-CH Stereo separation : C – D
The separations of both channels should be equal.
set
FM RF SSG
FM ANTENNA (75
Ω
) LINE OUT
level meter
Modulation : Stereo Standard signal
Output level : 6mV (76dB) (at 75
Ω
open)
FM stereo
Signal generator
Output channel
L-CH
R-CH
R-CH
L-CH
Level meter
connection
L-CH
L-CH
R-CH
R-CH
Level meter
reading (dB)
A
B
Adjust RV301 for minimum
reading on Level meter
C
D
Adjust RV301 for minimum
reading on Level meter