Read Sony CFS-B21L Service Manual online
4-2.
RADIO SECTION
•
FM Section
Setting :
FUNCTION switch : RADIO
BAND switch : FM
FUNCTION switch : RADIO
BAND switch : FM
set
0.01
µ
F
FM RF signal
generator
generator
telescopic antenna
input
input
22.5kHz frequency
deviation by 400Hz signal
output level : as low as possible
deviation by 400Hz signal
output level : as low as possible
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
*
* : The FM IF adjustment specifications are different depending
upon the color code of CF1. See the following table.
CF1 color
Red
Blue
Orange
Black
White
frequency
10.70MHz
10.67MHz
10.73MHz
10.64MHz
10.76MHz
color code
CF1
AM RF signal
generator
generator
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
30% amplitude
modulation by
400Hz signal
output level : as low as possible
modulation by
400Hz signal
output level : as low as possible
32
Ω
phones jack
set
level meter
(range : 0.5–5V ac)
(range : 0.5–5V ac)
+
–
( ) : EE1 model
•
MW Section
Setting :
FUNCTION switch : RADIO
BAND switch : MW
FUNCTION switch : RADIO
BAND switch : MW
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