CDX-C90R - Sony Car Audio Service Manual (repair manual). Page 15

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– 15 –
AM RF signal
generator
antenna
terminal
AM dummy
antenna (50 
)
30 
65 pF
15 pF
set
MW Auto Scan/Stop Level Adjustment
Setting :
SOURCE 
n MODE button : MW
Procedure :
1. Set to the test mode. (See page 13.)
2. Push the  SOURCE  button.
3. Push the  MODE  button and set to MW.
Display
4. Push the preset  3  button.
Display
5. Adjust with the volume RV1 on TU701 so that the “MW”
indication turns to “MW0” indication on the display window.
But, in case of already indicated “MW0”, turn the RV1 so that
put out light “0” indication and adjustment.
Display
Carrier frequency : 999 kHz
30% amplitude
modulation by
1 kHz signal
output level
: 33 dB (44.7 
µ
V)
Adjustment Location : See page 16.
EL
D
EL
D
EL
D
Carrier frequency : 98.0 MHz
Output level
: 35 dB (56.2 
µ
V)
Mode
: mono
Modulation
: no modulation
Procedure :
1. Set to the test mode. (See page 13.)
2. Push the  SOURCE  button and set to FM.
Display
FM RDS S-Meter Adjustment
Setting :
SOURCE button : FM
3. Push the preset  10  button.
4. Adjust RV701 so that the display indication is “13.0”.
Display
Specification : Display indication : 12.8 to 13.2.
Adjustment Location : See page 16.
FM RF signal
generator
antenna
terminal
0.01 
µ
F
set
EL
D
EL
D
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Display

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