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Sony CDP-227ESD Service Manual

Sony CDP-227ESD
25 pages
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SERVICE
MANUAL
photo:
CDP-507ESD
MICROFILM
LINE
OUT
(FIXED)
(phono
jacks)
Output
level
2
V
(at
50
kilohms)
Load
impedance
over
10
kilohms
LINE
OUT
Output
level
max.
2
V
(at
50
kilohms)
(VARIABLE)
Load
impedance
over
50
kilohms
(phono
jacks)
DIGITAL
OUT
Output
level
0.5
Vp-p
(at
75
ohins)
(COAXIAL)
Load
impedance
75
ohms
|
(phono
jacks)
i
DIGITAL
OUT
Wave
length
(OPTICAL)
660
nm
(optical
output
Output
level
‘connector
-—18
dBm
HEADPHONES
Output
level
max.
(stereo
phone
jack)
|
28
mW
Load
impedance
32
ohms
AEP
UK
US
Canadian
E
Model
Model
CDP-227ESD
Model
Model
Model
CDP-507ESD
Weight
(approx.)
SPECIFICATIONS
Compact
disc
player
General
System
Compact
disc
digital
audio
system
Power
AEP
model
Laser
Semiconductor
laser
(A
=
780
nm)
requirements
(CDP-227ESD)
A
220
V
AC{or
240
V
AC
adjustable
by
Emission
duration
|
Continuous
Sony
personnel),
50/60
Hz
Laser
output
Max.
44.6
uw
UK
model
*
This
output
is
the
value
measured
at
a
(CDP-227ESD)
distance
of
200
mm
from
the
objective
lens
240
V
AC(lor
220
V
AC
adjustable
by
surface
on
the
Optical Pick-up
Block.
Sony
personnel),
50/60
Hz
Frequency
nS
US,
Canadian
model
response
eee
coe
08
(CDP-507ESD)
R ;
120
V
AC,
60Hz
ae
eg
Stee
More
than
106
dB
E
model
:
(CDP-507ESD)
Dynamic
range
More
than
96
dB
110,
120,
220
or
240
V
AC
adjustable,
Harmonic
Less
than
50/60
Hz
distortion
0.0025%
Power
“sith
Wow
and
flutter
Below
measurable
limit
consumption
Channel
More
than
100dB
Dimensions
430
x
110
x
345
mm
separation
(approx.)
(wihid)
(17
x
43/e
x
13/8
inches)
Outputs
including
projecting
parts
and
controls
6.3kg
(13lbs
1502)
Supplied
accessories
Audio
signal
connecting
cord
1
(2
phono
piugs—2
phono
plugs)
Remote
commander
1
Sony
SUM-3
(NS)
batteries
Screw
driver
al
Continued
on
page
2—
COMPACT
DISC
PLAYER
SONY.
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Sony CDP-227ESD Specifications

General IconGeneral
TypeCD Player
Frequency Response2 Hz - 20 kHz
Digital outputsCoaxial, Optical
Dynamic range100 dB
Disc formatCD
Output Level2.0 V
Line outputRCA
Dimensions430 x 110 x 340mm
Digital OutputCoaxial, Optical
Output Voltage2V

Summary

CD Player Specifications

Compact Disc Player System Details

Technical details of the CD player system, laser, and response.

General Unit Specifications

Power requirements, consumption, dimensions, and weight.

Product Features and Operating Voltage

Key Features Overview

Features for disc memo, program bank, custom index, and playing modes.

Operating Voltage and Model Information

Information on display window and operating voltage requirements for different models.

General Information and Technical Diagrams

General Section Overview

Covers laser safety during servicing and control functions.

Technical Diagrams Introduction

Introduces the diagrams section, including IC block diagrams.

Laser Safety During Servicing

Laser Diode Characteristics and Safety

Details on laser material, wavelength, output, and diode safety.

Optical Pick-up Servicing Safety

Precautions for optical pick-up handling and APC circuit adjustments.

Control Panel Functions

Front Panel Controls Identification

Identifies and explains the functions of the CD player's front panel controls.

Remote Commander Functions Explained

Details the operational functions of the remote control.

Servicing Procedures and Handling Precautions

Disctable Manual Operations Guide

Procedures for manual opening and removal of the disctable.

Optical Pick-up Handling Guidance

Precautions for handling the optical pick-up block and base unit.

Adjustments and References

Electrical and RF PLL Adjustments

Procedures for performing electrical adjustments and RF PLL tuning.

Optical Pick-up Adjustments

Focus bias and E-F balance adjustment procedures.

Focus/Tracking Gain Adjustment Procedure

Simplified Adjustment Method

A simplified procedure for adjusting focus and tracking gain.

Focus/Tracking Gain Adjustment Details

Waveform Examples and Adjustment Locations

Illustrates correct/incorrect waveforms and adjustment locations on the main board.

Technical Diagrams Overview

Integrated Circuit Block Diagrams

Block diagrams for various integrated circuits.

System Block Diagram

Overall block diagram illustrating the CD player system architecture.

Printed Wiring Board Layouts

Display Section Wiring and Semiconductors

Printed wiring board layout and semiconductor lead layouts for the display section.

Semiconductor Lead Layouts

Lead configurations for various semiconductor components.

Schematic Diagrams - Display Section

Display and Timer Board Schematics

Schematics for the display board and timer board.

Remote Sensor and Timer Board Schematics

Schematics for the remote sensor and timer board.

Schematic Diagrams - Display Section Details

Display Board Schematic Details

Further schematic details of the display board.

Timer and Remote Sensor Schematics

Continued schematics for the timer board and remote sensor.

Waveform Analysis and Main Board Wiring

Waveform Examples for Testing

Visual representations of waveforms at various test points for analysis.

Main Section Printed Wiring Boards

Printed wiring board layout for the main section.

Main Board Components and Layout

Semiconductor Locations on Main Board

Identifies the locations of semiconductor components on the main board.

Circuit Board Layout Overview

Overview showing the physical placement of all circuit boards.

Schematics for Digital Out, Power, and Jack Boards

D/O and Power Board Schematics

Schematics for the Digital Out/Optical and Power boards.

Jack Board and Power Board Schematics

Schematics for the Jack board and additional power board configurations.

Main Section Schematics - Part 1

Loading, Translation, and Motor Board Connections

Schematic showing interconnections between loading, translation, and motor boards.

Optical Pick-up and Laser Drive Schematics

Detailed schematics of the optical pick-up block and laser drive circuit.

Main Section Schematics - Part 2

Mechana Control and Mute Drive Schematics

Schematics detailing the mechana control and mute drive circuits.

Digital Signal Processing and CLV Servo Schematics

Schematics related to digital signal processing and CLV servo functions.

Digital Processing and Power Regulation Schematics

Digital Filter and Power Regulation Circuits

Schematics for the digital filter and various power regulation circuits.

D/A Conversion and Output Stage Schematics

Schematics for D/A converters and output stage circuits.

Power Supply and Control Schematics

Power Transformer and Rectifier Circuits

Schematics illustrating power transformers and rectifier circuits.

Voltage Selector and Line Amplifier Circuits

Diagrams for voltage selectors and line amplifier circuits.

Exploded Views - General and Chassis Assembly

General Assembly Exploded View

Exploded view of the overall CD player assembly.

Chassis Assembly Exploded View

Exploded view detailing the chassis and its components.

Exploded Views - Front Panel and Mechanism

Front Panel Components Exploded View

Exploded view of the front panel and its constituent parts.

Mechanism Section Exploded View

Exploded view illustrating the components of the mechanism section.

Electrical Parts List - Optical Block and Capacitors

Optical Pick-up Block Components List

List of electrical parts specific to the optical pick-up block.

Capacitors and Semiconductors List

Listing of all capacitors and semiconductor components with part numbers.

Electrical Parts List - Resistors

Resistor Components List

A comprehensive list of all resistor components used in the unit.

Electrical Parts List - Variable Resistors and Switches

Variable Resistors and Switches List

List of variable resistors and various types of switches.

Electrical Parts List - Remaining Components and Accessories

Switch Components and Accessories List

List of remaining switches, accessories, and packing materials.

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