Sony CDX-L350 / CDX-L450X / CDX-L470X / CXS-2100 Service Manual ▷ View online
13
CDX-L350/L450X/L470X
1
tension spring (KF1)
7
compression spring (FL)
6
floating block assy
8
compression spring (FL)
4
Fit lever (D) in the
direction of the arrow.
2
damper (T)
3
damper (T)
5
Turn loading ring in the
direction of the arrow.
Fig. 1
1
tension spring (RA)
2
arm (roller)
3
retaing ring (RA)
4
shaft retainer
5
shaft roller assy
retaing ring (RA)
arm
arm
washer
washer
shaft retainer
shaft retainer
2-9. FLOATING BLOCK ASSY
2-8. SHAFT ROLLER ASSY
• When installing, take note of the positions
arm (roller) and washers. (Fig. 1)
arm (roller) and washers. (Fig. 1)
14
CDX-L350/L450X/L470X
1
P 2x3
2
sled motor assy
3
optical pick-up block
2-10. OPTICAL PICK-UP BLOCK
15
CDX-L350/L450X/L470X
TUNER SECTION
Cautions during repair
When the tuner unit is defective, replace it by a new one because
its internal block is difficult to repair.
its internal block is difficult to repair.
Procedure :
1. Set to the test mode.
2. Push the SRC button and set to FM.
1. Set to the test mode.
2. Push the SRC button and set to FM.
FM Auto Scan/Stop Level Adjustment
Setting :
SOURCE button
: FM
FREQUENCY SELECT switch (L450X/L470X) : FM 50k
3. Adjust with the volume RV2 on TU601 so that the “FM”
indication turns to “FM0” indication on the display window.
But, in case of already indicated “FM0”, turn the RV2 so that
put out light “0” indication and adjustment.
But, in case of already indicated “FM0”, turn the RV2 so that
put out light “0” indication and adjustment.
*1: L450X/L470X are indicates “98.00”.
Adjustment Location : See page 16.
0 dB = 1 µV
Note on Adjustment
The adjustments of tuner section, should be performed according
to the following sequence.
1. FM Auto Scan/Stop Level Adjustment
2. FM Stereo Separation Adjustment
3. AM Auto Scan/Stop Level Adjustment
to the following sequence.
1. FM Auto Scan/Stop Level Adjustment
2. FM Stereo Separation Adjustment
3. AM Auto Scan/Stop Level Adjustment
Carrier frequency : 97.9 MHz (L350)
: 98.0 MHz (L450X/L470X)
Output level
: 22 dB (12.6 µV)
Mode
: mono
Modulation
: 1 kHz, 22.5 kHz deviation (30%)
TEST MODE
This set have the test mode function. In the test mode, FM Auto
Scan/Stop Level and AM Auto Scan/Stop Level check can be
performed easier than it in ordinary procedure.
Scan/Stop Level and AM Auto Scan/Stop Level check can be
performed easier than it in ordinary procedure.
<Set the Test Mode>
1. Turn ON the regulated power supply to ACC and BATT
1. Turn ON the regulated power supply to ACC and BATT
terminals is “OFF” position (display 1:00).
2. Push the preset 4 button.
3. Push the preset 5 button.
4. Press the preset 1 button for more than two seconds.
5. Then the display and LED on the front panel indicates all lights,
3. Push the preset 5 button.
4. Press the preset 1 button for more than two seconds.
5. Then the display and LED on the front panel indicates all lights,
the test mode is set.
<Release the Test Mode>
1. Push the OFF button.
1. Push the OFF button.
SECTION 3
ELECTRICAL ADJUSTMENTS
antenna
terminal
terminal
FM RF signal
generator
0.01
µ
F
set
FM
97.90
Z
ST
SHUF
1
l
Display
FM0
Z
97.90
Z
ST
SHUF
1
l
Display
16
CDX-L350/L450X/L470X
AM Auto Scan/Stop Level Check
Note : This adjustment should be performed after the FM Auto
Scan / Stop Level Adjustment is done.
Setting :
SOURCE
t MODE button
: AM
FREQUENCY SELECT switch (L450X/L470X) : AM 9k
Carrier frequency : 1000 kHz (L350)
: 999 kHz (L450X/L470X)
Output level
: 30 dB (44.7 µV)
Mode
: mono
Modulation
: 1 kHz, 22.5 kHz deviation (30%)
Procedure :
1. Set to the test mode. (See page 15)
2. Push the SRC button.
3. Push the MODE button and set to AM.
1. Set to the test mode. (See page 15)
2. Push the SRC button.
3. Push the MODE button and set to AM.
4. Check that the “AM” indication turns to “AM0” indication on
the display window.
*2: L450X/L470X are indicates “999”.
FM Stereo Separation Adjustment
Setting :
SOURCE button
: FM
FREQUENCY SELECT switch (L450X/L470X) : FM 50k
Carrier frequency : 97.9 MHz (L350)
: 98.0 MHz (L450X/L470X)
Output level
: 70 dB (3.2 mV)
Mode
: stereo
Modulation
: main :1 kHz, 33.75 kHz deviation (45%)
sub :1 kHz, 33.75 kHz deviation (45%)
19 kHz pilot : 7.5 kHz deviation (10%)
sub :1 kHz, 33.75 kHz deviation (45%)
19 kHz pilot : 7.5 kHz deviation (10%)
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 :
FM stereo
Level meter
Level meter
signal generator
connection
reading (dB)
output channel
L-CH
L-CH
A
B
R-CH
L-CH
Adjust RV1 on TU601
for maximum reading.
for maximum reading.
R-CH
R-CH
C
D
L-CH
R-CH
Adjust RV1 on TU601
for maximum reading.
for maximum reading.
Procedure :
antenna
terminal
terminal
0.01
µ
F
set
level meter
FM RF signal
generator
AUDIO OUT REAR
10 k
Ω
RV1
FM Stereo Separation
Adjustment
RV2
FM Auto Scan/Stop
Level Adjustment
TU601(Component Side)
antenna
terminal
terminal
set
AM RF signal
generator
AM dummy
antenna (50
antenna (50
Ω
)
65 pF
15 pF
set
30
Ω
AM
0
1 00Z
Z
Z
ST
SHUF
2
Display
AM0
Z
0
1 00Z
Z
Z
SHUF
2
ST
Display
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