Sony MDX-C8900R Service Manual page 27

FM RDS S-Meter Adjustment
Setting:
[SOURCE]
button : FM
FM RF signal
generator
Carrier frequency : 98.00 MHz
: 35 dB (56.2 µ V)
Output level
Mode : mono
Modulation : no modulation
Procedure:
1. Set to the test mode. (See page 25.)
[SOURCE]
2. Push the button and set to FM.
REG
[10]
3. Push the preset button .
4. Adjust RV1 on MAIN board so that the display indication is
"13.0".
REG
Specification: Display indication: 12.8 to 13.2.
Adjustment Location: See page 28.
antenna jack (CN1)
0.01 µ F
set
Display
SHUF
Display
SHUF
MW Auto Scan/Stop Level Adjustment
Setting:
[SOURCE] [MODE]
n
AM RF signal
generator
AM dummy antenna
(50 Ω )
Carrier frequency : 999 kHz
30% amplitude
modulation by
1 kHz signal
Output level
Procedure:
1. Set to the test mode. (See page 25.)
[SOURCE]
2. Push the
[MODE]
3. Push the
TP
4. Adjust the volume RV1 on TU1 by turning clockwise untill
"0" is shown next to "MW" on the display window, If "0" is
already shown or the volume RV1 has been turned too far,
turn it back counterclockwise untill "0" is disappeared once,
then try this adjustment.
TP
Adjustment Location: See page 28.
– 27 –
button : MW
30 Ω 15 pF
antenna jack (CN1)
: 33 dB (44.7 µ V)
button and set to FM.
button and set to MW.
Display
SHUF
Display
SHUF
65 pF
set