Sony MDX-C8900R, Service Manual

Page: 27 / 88

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MW Auto Scan/Stop Level Adjustment
Setting:
[SOURCE]
n
[MODE]
button : MW
Procedure:
1. Set to the test mode. (See page 25.)
2. Push the
[SOURCE]
button and set to FM.
3. Push the
[MODE]
button and set to MW.
Display
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.
Display
Adjustment Location: See page 28.
FM RDS S-Meter Adjustment
Setting:
[SOURCE]
button : FM
Procedure:
1. Set to the test mode. (See page 25.)
2. Push the
[SOURCE]
button and set to FM.
Display
3. Push the preset
[10]
button .
4. Adjust RV1 on MAIN board so that the display indication is
“13.0”.
Display
Specification: Display indication: 12.8 to 13.2.
Adjustment Location: See page 28.
set
antenna jack (CN1)
FM RF signal
generator
Carrier frequency : 98.00 MHz
Output level : 35 dB (56.2
µ
V)
Mode : mono
Modulation : no modulation
0.01
µ
F
SHUF
REG
SHUF
REG
AM RF signal
generator
Carrier frequency : 999 kHz
30% amplitude
modulation by
1 kHz signal
Output level
: 33 dB (44.7
µ
V)
(50
Ω
)
set
AM dummy antenna
30
Ω
15 pF
65 pF
antenna jack (CN1)
TP
SHUF
TP
SHUF