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Aiwa DX-D91 User Manual

Aiwa DX-D91
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S/M
Code
No.90-006
DATE
OF
ISSUE
2,/1990
-
T
AIWA
DX-D91
SERVICE
MANUAL
e
BASIC
CD
MECHANISM:
KSL
150ACM3
e@
TYPE.
Y,YK
COMPACT
DISC
PLAYER
@
DX-—D91
is
the
Compact
Disc
Player
which
is
connected
to
MX—D91/D86
only.
SPECIFICATIONS
Type:
Compact
disc
digital
audio
system
Disc:
Compact
disc
Scanning
method:
Non
contact
optical
scanner
(semiconductor
laser
application)
Laser:
Semiconductor
laser
(A=780
nm)
Rotation
speed:
Approx.
500
rpm
-
200
rpm
(CLV)
Approx.
900 rpm
~
360
rpm
(CLV)
(at
high
speed)
(only
when
connected
to
the
FX-W919
or
FX-W868
cassete
:
deck)
Error
correction:
Cross
interleave,
Reed
Solomon
code
No.
of
channels:
2
channel
D-A
conversion:
16-bit
linear
Wow/Fiutter:
Unmeasurable
Dimensions:
360
(W)
x
118
(H)
x
304
(D)
nm
Weight:
3.4
kg
Frequency
response:
10
Hz
-
20
kHz,
+1
dB
Harmonic
distortion:
0.015%
(1
kHz,
0
dB)
Dynamic
range:
92
dB
Channel
separation:
84
dB
(1
kHz,
0
dB)
S/N
ratio:
96
dB
(1
kHz)
*
Design
and
specifications
are
subject
to
chinge
without
notice,
AIWA
Co.,
Ltd.
|
Tokyo
Japan
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Aiwa DX-D91 Specifications

General IconGeneral
BrandAiwa
ModelDX-D91
CategoryCD Player
LanguageEnglish

Summary

Specifications

General Specifications

Type, Disc, Scanning method, Laser, Rotation speed, Error correction, channels, D-A conversion, Wow/Flutter, Dimensions, Weight.

Performance Specifications

Frequency response, Harmonic distortion, Dynamic range, Channel separation, S/N ratio.

Servicing Precautions and Power Connection

Cautions During Servicing

General warnings and advice for safe and effective service procedures.

Multi-Power Supply Connection

Details on connecting the multi-power supply (LPS-9088) for operation.

Accessories and Package List

List of included accessories and package contents for the unit.

Laser Safety and Disassembly Procedures

Laser Beam Safety Precautions

Warnings and guidelines for protecting eyes from laser radiation during servicing.

Component Disassembly Steps

Step-by-step instructions for disassembling the CD player mechanism.

Tray and Mechanism Removal

Specific steps for removing the tray and the CD mechanism assembly.

Electrical Component Identification

Integrated Circuit (IC) List

List of integrated circuits used in the unit with their part numbers.

Transistor and Diode List

List of transistors and diodes used in the unit with their part numbers.

Capacitor Component List

List of capacitors used in the unit with their part numbers and specifications.

Additional Component and Circuit Board Lists

Filters, Resistors, and Transformers

Identification of filters, resistors, and transformers with part numbers.

Switches, Crystals, and Circuit Boards

List of switches, crystals, and circuit boards with their part numbers.

Waveform and Voltage Diagnostics

Voltage and Waveform Measurements

Test points and expected voltage/waveform values for diagnosis.

Transistor Pinout Diagrams

Diagrams showing pin configurations for common transistors used.

System Block Diagram

Overall System Architecture

A detailed block diagram illustrating the interconnected functional units of the CD player.

Wiring Diagrams and Connectivity

General Wiring Diagrams

General diagrams showing wiring connections between circuit boards.

Motor and Switch Circuit Wiring

Specific wiring details for motor and switch circuit boards.

Adjustment Procedures

Focus and Tracking Adjustments

Steps for adjusting focus bias and tracking balance for optical performance.

VCO and Offset Voltage Adjustments

Procedures for adjusting VCO frequency and offset voltage.

RF Waveform Check

Method for checking the RF signal waveform after optical block replacement.

Adjustment Troubleshooting and Waveform Analysis

Adjustment Symptoms and Solutions

Correlation between symptoms, gain settings, and simple adjustment methods.

Waveform Examples for Adjustments

Illustrative examples of correct and incorrect waveforms for adjustments.

Integrated Circuit (IC) Pin Descriptions

IC CXP5058H-554Q Pinout

Detailed pin assignments and functions for the CXP5058H-554Q IC.

IC CXA1082BQ/CXA1081S Pinout

Pin descriptions for the CXA1082BQ and CXA1081S ICs.

IC CXD1135Q Pin Descriptions

CXD1135Q Functions - Part 1

Detailed pin assignments and functions for the CXD1135Q IC.

CXD1135Q Functions - Part 2

Continued pin assignments and functions for the CXD1135Q IC.

Control and Signal Analysis

Key Matrix and Input Voltage

Description of the key matrix and corresponding input voltage levels.

Peak Search Circuit Analysis

Explanation of the peak search circuit operation and signal behavior.

Mechanical Assembly - Exploded View 1

Exploded View - 1 Diagram

Visual representation of the first set of mechanical parts and their assembly.

Mechanical Parts List

Comprehensive list of mechanical parts with reference numbers and descriptions.

Mechanical Assembly - Exploded View 2

Exploded View - 2 Diagram

Visual representation of the second set of mechanical parts and their assembly.

Mechanical Parts List Continuation

Mechanical Parts Listing

Further listings of mechanical components and their details.

Mechanical Assembly - Exploded View 3 and Motor Details

Exploded View - 3 Diagram

Visual representation of motor-related mechanical parts and assembly.

Motor and Switch Component Lists

Specific parts list for motors and related switches.

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