Read Sony MDX-C8900R (serv.man4) Service Manual online
SERVICE MANUAL
CORRECTION-2
Correct your service manual as shown below.
MDX-C8900R
AEP Model
UK Model
ELECTRICAL ADJUSTMENTS
!
: Indicates corrected portion.
Sony Corporation
Mobile Electronics Company
9-926-014-92
99I0542-1D
Printed in Japan
C
1999. 9
Published by Quality Assurance Dept.
FM Stereo Separation Adjustment (Wide)
Setting:
[SOURCE]
button : FM
Procedure:
1. Set to the test mode. (See page25)
2. Push the
1. Set to the test mode. (See page25)
2. Push the
[SHIFT]
button.
3. Push the
[4]
button four times.
4. Push the
[5]
button once and set to wide mode.
5. Adjust the volume RV3 on FM/AM tuner unit (TU1) for the
best separation.
L-CH Stereo separation: A-B
R-CH Stereo separation: C-D
The separations of both channels should be equal.
R-CH Stereo separation: C-D
The separations of both channels should be equal.
Specification: Separation more than 24 dB
Adjustment Location: See page 28.
FM Stereo
Level meter
Level meter
signal generator
connection
reading (dB)
output channel
L-CH
L-CH
A
B
L-CH
R-CH
Adjust RV3 on TU1
for minimum reading.
R-CH
R-CH
C
R-CH
L-CH
D
FM RF signal
generator
Carrier frequency : 98.00 MHz
Output level
Output level
: 70 dB (3.2 mV)
Mode
: stereo
Modulation
: main : 1 kHz, 20 kHz deviation (45%)
sub : 1 kHz, 20 kHz deviation (45%)
sub : 1 kHz, 20 kHz deviation (45%)
:
19 kHz pilot: 7.5 kHz deviation (10%)
0.01
µ
F
set
antenna jack (CN1)
+
–
–
level meter
10 k
Ω
REAR
AUDIO OUT
AUDIO OUT
(75
Ω)
FM Stereo Separation Adjustment (Narrow)
Setting:
[SOURCE]
button : FM
Procedure:
1. Set to the test mode. (See page25)
2. Push the
1. Set to the test mode. (See page25)
2. Push the
[SHIFT]
button.
3. Push the
[4]
button four times.
4. Push the
[5]
button twice and set to narrow mode.
5. Adjust the volume RV4 on FM/AM tuner unit (TU1) for the
best separation.
L-CH Stereo separation: A-B
R-CH Stereo separation: C-D
The separations of both channels should be equal.
R-CH Stereo separation: C-D
The separations of both channels should be equal.
Specification: Separation more than 18 dB
Adjustment Location: See page 28.
FM RF signal
generator
Carrier frequency : 98.00 MHz
Output level
Output level
: 70 dB (3.2 mV)
Mode
: stereo
Modulation
: main : 1 kHz, 20 kHz deviation (26.5%)
sub : 1 kHz, 20 kHz deviation (26.5%)
sub : 1 kHz, 20 kHz deviation (26.5%)
:
19 kHz pilot: 7.5 kHz deviation (10%)
0.01
µ
F
set
antenna jack (CN1)
+
–
–
level meter
10 k
Ω
REAR
AUDIO OUT
AUDIO OUT
(75
Ω)
FM Stereo
Level meter
Level meter
signal generator
connection
reading (dB)
output channel
L-CH
L-CH
A
B
L-CH
R-CH
Adjust RV4 on TU1
for minimum reading.
R-CH
R-CH
C
R-CH
L-CH
D
Page 26
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