Sony CDX-C880 - Fm/am Compact Disc Player, Service Manual

Page: 29 / 65

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TU10
RV1
AM AUTO SCAN/
STOP LEVEL ADJ
RV2
FM AUTO SCAN/
STOP LEVEL ADJ
RV3
FM STEREO
SEPARATION ADJ
(WIDE)
RV4
FM STEREO
SEPARATION ADJ
(NARROW)
SHUF
SHUF
SHUF
AM RF signal
generator
antenna
terminal
AM dummy
antenna(50
Ω
)
30
Ω
65 pF
15 pF
set
Adjustment Location : tuner unit (TU10)
–set upper view–
AM Auto Scan/Stop Level Adjustment
Setting :
SOURCE
n
MODE button : AM
FREQUENCY SELECT switch (E model) : AM 10K
Procedure :
1. Set to the test mode. (See page 27.)
2. Push the SOURCE button.
3. Push the MODE button and set to AM.
Display
4. Push the preset 3 button.
Display
5. Adjust with the volume RV1 on TU10 so that the “AM”
indication turns to “AM0” indication on the display window.
But, in case of already indicated “AM0”, turn the RV1 so that
put out light “0” indication and adjustment.
Display
Carrier frequency : 1000 kHz
30% amplitude
modulation by
1 kHz signal
output level
: 33 dB (44.7
µ
V)
Adjustment Location : tuner unit (TU10)