DOWNLOAD Sony CDX-C880 Service Manual ↓ Size: 10.04 MB | Pages: 71 in PDF or view online for FREE

Model
CDX-C880
Pages
71
Size
10.04 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cdx-c880.pdf
Date

Sony CDX-C880 Service Manual ▷ View online

– 25 –
5
 LOAD SW board
4
 PS 2x3
1
 tension spring (RA)
2
 arm (roller)
3
 roller assy
washer
arm
washer
Fig. 1
arm
washers
2
 PS 2x5
3
 heat sink
7
 CN2
 SERVO board
6
 PS 2x4
8
 P 2x3
9
 loading motor assy
1
 PS 2x5
5
 CN5
4
 CN4
2-9. SERVO BOARD
2-10. ROLLER ASSY
• When installing, take note of the positions
  arm (roller) and washers. (Fig. 1)
– 26 –
1
 P 2x3
2
 sled motor assy
3
 optical pick-up block
6
 chassis (OP) (O/S) assy
7
 compression spring (FL)
4
 Fit lever (D) in the
     direction of the arrow.
3
 damper (T)
2
 damper (T)
5
 Turn loading ring in the
     direction of the arrow.
1
 tension spring (angle)
8
 compression spring (FL)
2-11. CHASSIS (OP) (O/S) ASSY
2-12. OPTICAL PICK-UP BLOCK
– 27 –
SHUF
SHUF
SHUF
FM RF signal
generator
antenna
terminal
0.01 
µ
F
set
SECTION 3
ELECTRICAL ADJUSTMENTS
Carrier frequency : 97.9 MHz
Output level
: 22 dB (12.6 
µ
V)
Mode
: mono
Modulation
: 1 kHz, 22.5 kHz deviation (30%)
Procedure :
1. Set to the test mode.
2. Push the  SOURCE  button and set to FM.
Display
FM Auto Scan/Stop Level Adjustment
Setting :
SOURCE button
: FM
FREQUENCY SELECT switch (E model) : FM 200K
3. Push the preset  3  button.
Display
4. Adjust with the volume RV2 on TU10 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.
Display
  CD SECTION
CD section adjustments are done automatically in this set.
  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.
TEST MODE
This set have the test mode function. In the test mode, FM Auto
Scan/Stop Level and AM Auto Scan/Stop Level adjustments can be
performed easier than it in ordinary procedure.
<Set the Test Mode>
1. Set the “OFF” mode.
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 indicates all lights, the test mode is set.
<Release the Test Mode>
1. Push the  OFF  button.
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
0 dB = 1 
µ
V
Adjustment Location : See page 29.
– 28 –
FM RF signal
generator
antenna
terminal
set
level meter
10 k 
LINE OUT REAR
0.01 
µ
F
FM RF signal
generator
antenna
terminal
set
level meter
10 k 
LINE OUT REAR
0.01 
µ
F
FM Stereo Separation Adjustment (WIDE)
Setting :
SOURCE button
: FM
FREQUENCY SELECT switch (E model) : FM 200K
Carrier frequency : 97.9 MHz
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%)
FM stereo
Level meter
Level meter
signal generator
connection
reading (dB)
output channel
L-CH
L-CH
A
B
R-CH
L-CH
Adjust RV3 on TU10 for
minimum reading.
R-CH
R-CH
C
D
L-CH
R-CH
Adjust RV3 on TU10 for
minimum reading.
L-CH stereo separation : A – B
R-CH stereo separation : C – D
The separations of both channels should be equal.
Specification : Separation more than 24 dB
Adjustment Location : See page 29.
Procedure :
FM Stereo Separation Adjustment (NARROW)
Setting :
SOURCE button
: FM
FREQUENCY SELECT switch (E model) : FM 200K
Carrier frequency : 97.9 MHz
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%)
FM stereo
Level meter
Level meter
signal generator
connection
reading (dB)
output channel
L-CH
L-CH
A
B
R-CH
L-CH
Adjust RV4 on TU10 for
minimum reading.
R-CH
R-CH
C
D
L-CH
R-CH
Adjust RV4 on TU10 for
minimum reading.
L-CH stereo separation : A – B
R-CH stereo separation : C – D
The separations of both channels should be equal.
Specification : Separation more than 18 dB
Adjustment Location : See page 29.
Procedure :
1. Set to the test mode.
2. Push the  SHIFT  button.
3. Push the  4  button three times.
4. Push the  5  button twice and set to NARROW mode.
Ver 1.1
1. Set to the test mode.
2. Push the  SHIFT  button.
3. Push the  4  button three times.
4. Push the  5  button once and set to WIDE mode.
Page of 71
Display

Click on the first or last page to see other CDX-C880 service manuals if exist.