Sony CDXC-5750 Service manual
CDX-C5750/C5850
SERVICE MANUAL
Photo: CDX-C5750
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS (US Model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
17 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more
than 1% total harmonic distortion.
US Model
CDX-C5750/C5850
Canadian Model
CDX-C5750
Model Name Using Similar Mechanism CDX-C480/C580
CD Drive Mechanism Type MG-363T-121
Optical Pick-up Name KSS-521A
Other Specifications
CD player section
System Compact disc digital audio
Signal-to-noise ratio 90 dB
Frequency response 10 – 20,000 Hz
Wow and flutter Below measurable limit
Laser Diode Properties
Material GaAlAs
Wavelength 780 nm
Emission Duration Continuous
Laser output power Less than 44.6 µW*
* This output is the value measured at a distance
of 200 mm from the objective lens surface on the
Optical Pick-up Block.
Tuner section
FM
Tuning range 87.5 – 107.9 MHz
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz
Usable sensitivity 12 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 65 dB (stereo),
Harmonic distortion at 1 kHz
Separation 35 dB at 1 kHz
Frequency response 30 – 15,000 Hz
AM
Tuning range 530 – 1,710 kHz
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity 30 µV
system
68 dB (mono)
0.7% (stereo),
0.5% (mono)
Power amplifier section
Outputs Speaker outputs
(sure seal connectors)
Speaker impedance 4 – 8 ohms
Maximum power output 40 W × 4 (at 4 ohms)
General
Outputs Line outputs (2)
Power antenna relay
control lead
Power amplifier control
lead
Telephone ATT control
lead
Tone controls Bass ±8 dB at 100 Hz
Treble ±8 dB at 10 kHz
Power requirements 12 V DC car battery
(negative ground)
Dimensions Approx. 178 × 50 × 185 mm
(7 1/8 × 2 × 7 3/8 in.)
(w/h/d)
Mounting dimensions Approx. 182 × 53 × 162 mm
(7 1/4 × 2 1/8 × 6 1/2 in.)
(w/h/d)
Mass Approx. 1.2 kg (2 lb. 10 oz.)
Supplied accessories Parts for installation and
connections (1 set)
Front panel case (1)
Design and specifications are subject to change without
notice.
MICROFILM
FM/AM COMPACT DISC PLAYER
– 1 –
SERVICE NOTE
TABLE OF CONTENTS
CAUTION
Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR
BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also use
the procedure in the printed matter which is included in the repair
parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-up
block. Therefore, when checking the laser diode emission, observe
from more than 30 cm away from the objective lens.
NOTES ON PICK-UP FLEXIBLE BOARD
The pick-up flexible board in this set is secured to the optical pick-up
with an adhesive tape. Once the tape is removed , an adhering force
becomes weak, and it cannot be reused.
Therefore, if the optical pick-up is replaced, replace also the pick-up
flexible board with a new one.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE
WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
P ART NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE ! SUR LES
DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
1. GENERAL
Location of controls ................................................................ 3
Getting Started ........................................................................ 3
Setting the clock ..................................................................... 3
CD Player................................................................................ 3
Radio ....................................................................................... 4
Other Functions ...................................................................... 5
CD/MD Unit ........................................................................... 5
TV/Video ................................................................................ 6
Connections ............................................................................8
2. DISASSEMBLY
2-1. Cover Assy ........................................................................ 10
2-2. Front Panel Assy ...............................................................10
2-3. Sub Panel (1) Assy ............................................................ 11
2-4. CD Mechanism Block ....................................................... 11
2-5. Main Board .......................................................................12
2-6. Heat Sink........................................................................... 12
2-7. Chassis (T) Sub Assy ........................................................ 13
2-8. Lever Assy.........................................................................13
2-9. Servo Board.......................................................................14
2-10. Roller Assy ........................................................................ 14
2-11. Chassis (OP) (O/S) Assy ...................................................15
2-12. Optical Pick-up Block ....................................................... 15
3. ELECTRICAL ADJUSTMENTS
Tuner Section ........................................................................ 16
CD Section ............................................................................ 18
4. DIAGRAMS
4-1. Block Diagram –CD Section–...........................................19
4-2. Block Diagram –Main Section–........................................ 21
4-3. Circuit Boards Location .................................................... 23
4-4. Printed Wiring Boards –CD Mechanism Section– ........... 25
4-5. Schematic Diagram –CD Mechanism Section–................ 27
4-6. Printed Wiring Board –Main Section–..............................29
4-7. Schematic Diagram –Main Section (1/2)–........................ 33
4-8. Schematic Diagram –Main Section (2/2)–........................ 35
4-9. Printed Wiring Board –Display Section–..........................37
4-10. Schematic Diagram –Display Section–............................. 39
4-11. IC Pin Description............................................................. 45
5. EXPLODED VIEWS
5-1. Chassis Section .................................................................48
5-2. Front Panel Section ........................................................... 49
5-3. CD Mechanism Section (1)............................................... 50
5-4. CD Mechanism Section (2)............................................... 51
5-5. CD Mechanism Section (3)............................................... 52
6. ELECTRICAL PARTS LIST.........................................53
– 2 –
SECTION 1
GENERAL
This section is extracted from
CDX-C5850’s instruction manual.
– 3 –
– 4 –
– 5 –
– 6 –
– 7 –
– 8 –
– 9 –
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the n umerical order given.
2-1. COVER ASSY
1
claw
3
claws
4
cover assy
2
claw
2-2. FRONT PANEL ASSY
1
button (release)
2
front panel assy
– 10 –
2-3. SUB PANEL (1) ASSY
5
1
PTT 2.6x6
sub panel (1) assy
3
claw
4
claw
2
PTT 2.6x6
2-4. CD MECHANISM BLOCK
8
5
CD mechanism block
2
PTT 2.6x6
bracket (M/D)
7
PTT 2.6x6
3
PTT 2.6x6
6
PTT 2.6x6
1
PTT 2.6x6
– 11 –
4
CNP700
2-5. MAIN BOARD
3
ground point screws
(PTT 2.6x6)
4
MAIN board
2
ground point screw
(PTT 2.6x6)
1
PTT 2.6x8
2-6. HEAT SINK
1
PTT 2.6x8
4
heat sink
2
PTT 2.6x12
3
PTT 2.6x8
– 12 –
2-7. CHASSIS (T) SUB ASSY
1
Unsolder the
lead wires.
red
white
black
3
P 2x3
2
P 2x3
2
P 2x3
4
chassis (T) sub assy
2-8. LEVER ASSY
6
lever (R) assy
3
tension spring (LR)
7
lever (L) assy
5
guide (disc)
1
PS 2x4
2
DISC IN SW board
4
claws
– 13 –
2-9. SERVO BOARD
5
3
P 2x3
4
loading motor assy
PS 2x4
1
CN3
6
PS 2x4
2
CN2
7
SERVO board
2-10. ROLLER ASSY
4
PS 2x3
5
LOAD SW board
washer
arm
washer
3
2
Fig. 1
roller assy
arm (roller)
washers
arm
1
tension spring (RA)
– 14 –
2-11. CHASSIS (OP) (O/S) ASSY
8
compression spring (FL)
1
tension spring (KF1)
7
9
compression spring (FL)
2
tension spring (KR1)
5
Fit lever (D) in the
direction of the arrow.
chassis (OP) (O/S) assy
6
Turn loading ring in the
direction of the arrow.
4
damper (T)
2-12. OPTICAL PICK-UP BLOCK
1
P 2x3
2
sled motor assy
3
damper (T)
3
optical pick-up block
– 15 –
Loading...