Sony CDX-4180-R Service manual
CDX-4180R
SERVICE MANUAL
SPECIFICATIONS
AEP Model
UK Model
Model Name Using Similar Mechanism CDX-4170R
CD Drive Mechanism Type MG-363X-121
Optical Pick-up Name KSS-521A
CD player section
System Compact disc digital audio
system
Signal-to-noise ratio 90 dB
Frequency response 10 - 20,000 Hz
Wow and flutter Below measurable limit
Tuner section
FM
Tuning range 87.5 - 108.0 MHz
Aerial terminal External aerial connector
Intermediate frequency 10.7 MHz
Usable sensitivity 8 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 65 dB (stereo),
68 dB (mono)
Harmonic distortion at 1 kHz
0.5% (stereo),
0.3% (mono)
Separation 35 dB at 1 kHz
Frequency response 30 - 15,000 Hz
Capture ratio 2 dB
MW/LW
Tuning range MW: 531 - 1,602 kHz
LW: 153 - 281 kHz
Aerial terminal External aerial connector
Intermediate frequency 10.71 MHz/450 kHz
Sensitivity MW: 30 µV
LW: 50 µV
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 aerial relay control
lead
Power amplifier control
lead
Telephone ATT control
lead
Tone controls Bass ± 10 dB at 100 Hz
Treble ± 10 dB at 10 kHz
Power requirements 12 V DC car battery
(negative ground)
Dimensions Approx. 178 × 50 × 185 mm
(w/h/d)
Mounting dimensions Approx. 182 × 53 × 162 mm
(w/h/d)
Mass Approx. 1.2 kg
Supplied accessories Parts for installation and
connections (1 set)
Front panel case (1)
Design and specifications are subject to change without
notice.
MICROFILM
FM/MW/LW 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 objecti ve lens in the optical pic k-up
block. Therefore, when checking the laser diode emission, observe
from more than 30 cm away from the objective lens.
1. GENERAL
Location of Controls................................................................ 3
Getting Started......................................................................... 3
Setting the Clock .....................................................................4
CD Player ................................................................................4
Radio ....................................................................................... 5
RDS ......................................................................................... 6
Other Functions ....................................................................... 8
Connections ........................................................................... 10
2. DISASSEMBLY
2-1. Cover Assy ........................................................................ 12
2-2. Front Panel Assy ............................................................... 12
2-3. Sub Panel (1) Assy ............................................................ 13
2-4. CD Mechanism Block ....................................................... 13
2-5. Main Board ....................................................................... 14
2-6. Heat Sink ........................................................................... 14
2-7. Chassis (T) Sub Assy ........................................................ 15
2-8. Lever Assy ......................................................................... 15
2-9. Servo Board....................................................................... 16
2-10. Roller Assy........................................................................ 16
2-11. Chassis (OP) (O/S) Assy ................................................... 17
2-12. Optical Pick-up Block ....................................................... 17
3. ELECTRICAL ADJUSTMENTS
Tuner Section.........................................................................18
CD Section ............................................................................ 21
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 remov ed, 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 P ARTS WHOSE
P AR T NUMBERS APPEAR AS SHO WN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
4. DIAGRAMS
4-1. IC Pin Description............................................................. 22
4-2. Block Diagram –CD Section–........................................... 25
4-3. Block Diagram –Main Section–........................................ 27
4-4. Circuit Boards Location .................................................... 29
4-5. Schematic Diagram –CD Mechanism Section– ................ 31
4-6. Printed Wiring Boards –CD Mechanism Section–............ 33
4-7. Printed Wiring Board –Main Section– .............................. 35
4-8. Schematic Diagram –Main Section–................................. 39
4-9. Printed Wiring Board –Display Section– .......................... 43
4-10. Schematic Diagram –Display Section–............................. 45
5. EXPLODED VIEWS
5-1. Chassis Section ................................................................. 51
5-2. Front Panel Section ........................................................... 52
5-3. CD Mechanism Section (1) ............................................... 53
5-4. CD Mechanism Section (2) ............................................... 54
5-5. CD Mechanism Section (3) ............................................... 55
6. ELECTRICAL PARTS LIST.........................................56
– 2 –
SECTION 1
GENERAL
This section extracted
from instruction manual.
– 3 –
– 4 –
– 5 –
– 6 –
– 7 –
– 8 –
– 9 –
– 10 –
– 11 –
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
– 12 –
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
4
CNP700
3
PTT 2.6x6
6
PTT 2.6x6
1
PTT 2.6x6
– 13 –
2-5. MAIN BOARD
3
ground point screws
4
MAIN board
2
ground point screw
1
PTT 2.6x8
2-6. HEAT SINK
1
PTT 2.6x8
4
heat sink
2
PTT 2.6x10
3
PTT 2.6x8
– 14 –
2-7. CHASSIS (T) SUB ASSY
1
Unsolder the
lead wires.
red
white
black
3
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
– 15 –
2-9. SERVO BOARD
4
5
PS 2x4
1
3
P 2x3
loading motor assy
CN3
6
PS 2x4
2
CN2
7
SERVO board
2-10. ROLLER ASSY
• When installing, take note of the positions
arm (roller) and washers. (Fig. 1)
4
PS 2x3
5
LOAD SW board
washer
arm
washer
3
2
Fig. 1
roller assy
arm (roller)
washers
arm
1
tension spring (RA)
– 16 –
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