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Model Name Using Similar Mechanism
CDX-2180
CD Drive Mechanism Type
MG-363X-121
Optical Pick-up Name
KSS-521A
SERVICE MANUAL
E Model
CDX-3170
FM/AM COMPACT DISC PLAYER
MICROFILM
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 - 107.9 MHz
Antenna terminal
External antenna connector
Intermediate frequency
10.7 MHz
Usable sensitivity
13 dBf
Selectivity
70 dB at 400 kHz
Signal-to-noise ratio
62 dB (stereo),
65 dB (mono)
Harmonic distortion at 1 kHz
1.0% (stereo),
0.5% (mono)
Separation
33 dB at 1 kHz
Frequency response
30 - 15,000 Hz
Capture ratio
2 dB
AM
Tuning range
530 - 1,710 kHz
Antenna terminal
External antenna connector
Intermediate frequency
450 kHz
Sensitivity
32
µV
SPECIFICATIONS
Power amplifier section
Outputs
Speaker outputs
(sure seal connectors)
Speaker impedance
4 - 8 ohms
Maximum power output
35 W
× 4 (at 4 ohms)
General
Outputs
Line outputs (2)
Power antenna relay
control/Power amplifier
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. 188
× 58 × 180 mm
(w/h/d)
Mounting dimensions
Approx. 183
× 53 × 163 mm
(w/h/d)
Mass
Approx. 1.3 kg
Supplied accessories
Parts for installation and
connections (1 set)
Design and specifications are subject to change without
notice.
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TABLE OF CONTENTS
1. GENERAL
Location of Controls ................................................................ 3
Getting Started ......................................................................... 3
Setting the Clock ..................................................................... 4
CD Player ................................................................................ 4
Radio ....................................................................................... 4
Other Functions ....................................................................... 5
Connections ............................................................................. 6
2. DISASSEMBLY
2-1. Cover Assy .......................................................................... 8
2-2. Front Panel Assy ................................................................. 8
2-3. Sub Panel ............................................................................. 9
2-4. CD Mechanism Block ......................................................... 9
2-5. Main Board ....................................................................... 10
2-6. Heat Sink ........................................................................... 10
2-7. Chassis (T) Sub Assy ........................................................ 11
2-8. Lever Assy ......................................................................... 11
2-9. Servo Board ....................................................................... 12
2-10. Roller Assy ........................................................................ 12
2-11. Chassis (OP) (O/S) Assy ................................................... 13
2-12. Optical Pick-up Block ....................................................... 13
3. ELECTRICAL ADJUSTMENTS
Tuner Section ......................................................................... 14
CD Section ............................................................................ 18
4. DIAGRAMS
4-1. IC Pin Description ............................................................. 19
4-2. Circuit Boards Location .................................................... 21
4-3. Printed Wiring Boards CD Mechanism Section ............ 23
4-4. Schematic Diagram CD Mechanism Section ................ 25
4-5. Printed Wiring Boards Display Section ........................ 27
4-6. Schematic Diagram Display Section ............................. 29
4-7. Printed Wiring Board Main Section .............................. 31
4-8. Schematic Diagram Main Section (1/2) ........................ 33
4-9. Schematic Diagram Main Section (2/2) ........................ 35
5. EXPLODED VIEWS
5-1. Chassis Section ................................................................. 40
5-2. Front Panel Section ........................................................... 41
5-3. CD Mechanism Section (1) ............................................... 42
5-4. CD Mechanism Section (2) ............................................... 43
5-5. CD Mechanism Section (3) ............................................... 44
6. ELECTRICAL PARTS LIST ........................................ 45
SERVICE NOTE
CAUTION
Use of controls or adjustments or performance of proce-
dures other than those specified herein may result in haz-
ardous 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 HANDLINGTHE 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
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
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SECTION
1
GENERAL
This
section
extracted
from
instruction
manual.
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