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Sharp CD-C471 W User Manual

Sharp CD-C471 W
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CD-C471W
SHARP
SERVICE MANUAL
No.
S6845CDC471
W/
ciInli%
DIGITAL
AUDIO
SURROUND
YYI
PRO f LOGIC
Manufactured under license from Dolby Laboratories Licens-
ing Corporation.
DOLBY, the double-D symbol
00
and PRO LOGIC
are trademarks of Dolby Laboratories Licensing Corporation.
CD-C471
W
CD-C471
W
mini component system consisting of
CD-C471
W
mini component system, front (CP-C471), senter
(GBOXS0006AWM6)and
surround(GBOXS0007AWM6)
Speaker System.
l
In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
/
CONTENTS
.
Page
SAFETY
PRECAUTION FOR SERVICE MANUAL
..........................................................................................................
2
VOLTAGE SELECTION..
..................................................................................................................................................
2
SPECIFICATIONS ............................................................................................................................................................
3
NAMES OF PARTS
..........................................................................................................................................................
4
OPERATION MANUAL
.....................................................................................................................................................
6
DISASSEMBLY.. ...............................................................................................................................................................
7
REMOVING AND REINSTALLING THE MAIN
PARTS..................................................................................................
IO
ADJUSTMENT.. ..............................................................................................................................................................
11
NOTES ON SCHEMATIC DIAGRAM
.............................................................................................................................
14
TYPE
QF
TRANSISTOR AND LED
................................................................................................................................
14
BLOCK DIAGRAM
..........................................................................................................................................................
15
SCHEMATIC DIAGRAM
/WIRING
SIDE OF
P.W.BOARD.. ..........................................................................................
18
WAVEFORMS OF
CD
CIRCUIT..
...................................................................................................................................
39
TROUBLESHOOTING (CD CHANGER CONTROL / CD SECTION). ............................................................................
40
FUNCTION TABLE OF
IC
..............................................................................................................................................
44
FL DISPLAY
....................................................................................................................................................................
54
REPLACEMENT PARTS LIST/EXPLODED VIEW
SHARP
CoRPoRATloN
This document has been published to be used
for after sales
selvice
only.
The contents are subject to change without notice.
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Sharp CD-C471 W Specifications

General IconGeneral
CD PlayerYes
BluetoothNo
USB PortNo
Radio TunerAM/FM
Cassette DeckDual
Speakers2-way speakers
CD Changer Capacity5-disc carousel

Summary

Safety Precautions

Laser Pickup Safety

Precautions for servicing the laser pickup to prevent eye exposure.

Voltage Selector Location

Locating the AC voltage selector for voltage adjustment.

System Specifications

General and Amplifier Specifications

Specs for general system, amplifier section, power, and terminals.

CD, Tuner, and Cassette Specifications

Specs for CD player, tuner, and cassette deck sections.

Speaker System Specifications

Specs for front, center, and surround speaker systems.

Names of Parts - Front Panel

Front Panel Controls and Indicators

Identification of buttons, indicators, and sockets on the front panel.

Names of Parts - Rear Panel and Remote

Rear Panel Connections and Terminals

Identification of sockets and terminals on the rear panel.

Speaker Components Identification

Identification of components within the speaker units.

Remote Control Layout

Identification of buttons on the remote control.

Operation Guide

Setting the Clock Time

Step-by-step instructions for setting the unit's clock.

Changing Time Display Mode

How to switch between 12-hour and 24-hour time display.

System Reset Procedure

Instructions for resetting the microcomputer and its memory.

Disassembly Instructions

Disassembly Precautions

Important safety and handling notes before disassembling the unit.

Top Cabinet and Side Panel Removal

Procedure for removing the top and side panels.

CD Player Unit and Tray Removal

Steps to remove the CD player unit and tray cover.

Removing and Reinstalling Main Parts

CD Mechanism Section Removal

Instructions for removing the CD mechanism.

Turntable Motor and Pickup Removal

Steps to remove turntable motor and optical pickup.

Adjustment Procedures

Mechanism Section Adjustments

Torque and tape speed checks and adjustments.

Tuner Section Adjustments

AM IF/RF and FM Mute Level adjustments.

Test Mode Operations

Setting and Using Test Modes

How to enter and use various test modes for CD operation.

CD Section Automatic Adjustments

Explanation of automatic adjustments within the CD section.

Dolby Surround Pro Logic Explanation

Pro Logic Modes and Output Evaluation

Explanation of Pro Logic modes and using test tones for evaluation.

Video Input Impact on Pro Logic

How video input signal affects Pro Logic output states.

Notes on Schematic Diagrams

Component Notation and Diagram Reading

Explanation of resistor/capacitor notation and diagram reading notes.

Switch and Transistor/LED Identification

Tables for switch positions and common transistor/LED types.

Block Diagram - CD Section

Pickup Unit and CD Motor Control Circuit

Block diagram of pickup, sled, and disc motors and control.

Loading Motor and Signal Path Blocks

Block diagram of loading motor driver and signal flow.

Block Diagrams - Tuner, Tape, and Audio

Tuner and Tape Section Signal Flow

Block diagram of tuner and tape mechanism signal paths.

Audio Processing and Dolby Logic Blocks

Block diagram of audio processor and Dolby Pro Logic decoder.

Block Diagrams - Power and Control Systems

Microcomputer and Amplifier Blocks

Block diagram of microcomputer, I/O expander, and amplifier stages.

Power Supply and Regulation Blocks

Block diagram of power supply, transformers, and regulators.

Schematic Diagram - CD Servo PWB

Pickup Unit and Motor Circuit Schematic

Schematic of pickup unit, sled motor, and disc motor circuits.

CD Servo Control Circuit Schematic

Schematic of the servo control IC and associated components.

Schematic Diagram - CD Signal Processing

CD Signal Path and Control Logic Schematic

Schematic showing CD signal processing and control logic.

Loading Motor Driver Circuit Schematic

Schematic for the CD loading motor driver circuit.

Schematic Diagram - System Microcomputer

Microcomputer and Related Circuitry Schematic

Schematic showing microcomputer and related circuits.

Audio Processor Connections Schematic

Schematic showing connections to the audio processor IC.

Schematic Diagram - Main PWB Signal Paths

Main PWB FM and Playback Signal Paths

Schematic showing FM and playback signal paths on the main PWB.

Main PWB CD Signal Path Schematic

Schematic showing CD signal path on the main PWB.

Schematic Diagram - Tape Mechanism PWB

Tape Mechanism Motor and Solenoid Control Schematic

Schematic for tape motor and solenoid control.

Tape Head and Playback Circuit Schematic

Schematic for tape playback heads and associated circuits.

Schematic Diagram - Main PWB Playback Amplifier

Playback and Record Amplifier Circuit Schematic

Schematic of the playback and record amplifier circuits on the main PWB.

Schematic Diagram - Display and Microcomputer

Display PWB Circuit Schematic

Schematic of the display PWB and its components.

Microcomputer I/O Connections Schematic

Schematic of microcomputer I/O ports and connections.

Schematic Diagram - Display PWB and Expander

Display PWB and LED Control Schematic

Schematic of the display PWB and LED control circuits.

Input/Output Expander Circuit Schematic

Schematic of the input/output expander IC and its connections.

Schematic Diagram - Power Amplifiers

Power Amplifier IC Circuit Schematic

Schematic of the power amplifier IC and its associated components.

Power Supply and Regulator Schematic

Schematic of voltage regulators and power supply circuits.

Schematic Diagram - Power Transformer and Speaker Outputs

Power Transformer and Voltage Selector Wiring Schematic

Schematic of the power transformer and voltage selector.

Speaker Output Amplifier Wiring Schematic

Schematic of the amplifier outputs to the speakers.

Schematic Diagram - Tuner Front End and PLL

Tuner Front End Circuit Schematic

Schematic of the FM/AM tuner front end section.

Tuner PLL Circuit Schematic

Schematic of the PLL tuner circuit.

Schematic Diagram - Tuner PWB Details

Tuner PWB FM/AM IF and Control Schematic

Schematic of tuner PWB FM/AM IF stages and control signals.

Tuner PWB PLL and Output Wiring Schematic

Schematic of tuner PWB PLL and output circuits.

Pin Voltage Tables

IC Voltages - IC1, IC2, IC3

Table of pin voltages for IC1, IC2, and IC3 in various states.

IC Voltages - IC501, IC601, IC651, IC681

Table of pin voltages for IC501, IC601, IC651, IC681 in various states.

IC Voltages - IC701, IC81, IC901, IC951

Table of pin voltages for IC701, IC81, IC901, IC951 in various states.

PWB Wiring Diagrams - Display and Switch

Display PWB (A2) Wiring Diagram

Wiring diagram for the display PWB.

Switch PWB (A3) Wiring Diagram

Wiring diagram for the switch PWB.

PWB Wiring Diagrams - Main and Tape Mechanism

Main PWB Wiring Details

Wiring details for the main PWB.

Tape Mechanism PWB Wiring Diagram

Wiring diagram for the tape mechanism PWB.

PWB Wiring Diagrams - Main PWB Connections

Main PWB Input/Output Wiring

Wiring for input/output connections on the main PWB.

Main PWB IC Connections Wiring

Wiring for IC connections on the main PWB.

PWB Wiring Diagrams - Tape Mechanism and Pickup

Tape Mechanism PWB Wiring

Wiring diagram for the tape mechanism PWB.

Pickup Unit and Head PWB Wiring

Wiring for pickup unit and head PWB.

PWB Wiring Diagrams - CD Servo and Motor

CD Servo PWB Wiring Diagram

Wiring diagram for the CD servo PWB.

CD Motor PWB Wiring Diagram

Wiring diagram for the CD motor PWB.

PWB Wiring Diagrams - Power Amplifier and Speakers

Power Amplifier PWB Wiring Diagram

Wiring diagram for the power amplifier PWB.

Speaker Terminal Wiring Diagram

Wiring to the speaker terminals.

PWB Wiring Diagrams - Power Transformer and Fan

Power Transformer and Voltage Selector Wiring

Wiring for the power transformer and voltage selector.

Fan Motor Wiring Diagram

Wiring for the fan motor.

PWB Wiring Diagrams - Tuner PWB

Tuner PWB Front End Wiring Diagram

Wiring diagram for the tuner PWB front end.

Tuner PWB Control and Output Wiring Diagram

Wiring diagram for tuner PWB control and output signals.

CD Circuit Waveforms

Focus, Search, and Tracking Waveforms

Waveforms related to focus, search, and tracking operations.

EFM, Review, and Playback Waveforms

Waveforms for EFM, review, and playback signals.

Servo Control Waveforms

Waveforms for servo control signals like SPO, CLV, SLD.

Troubleshooting - CD Section

CD Functionality Issues

Troubleshooting steps for CD not functioning or operating.

Turntable Movement Failures

Troubleshooting for turntable failing to stop or move.

Troubleshooting - CD Section

CD Tray and Key Operation Issues

Troubleshooting CD tray open/close and control key problems.

Pickup Movement and Waveform Analysis

Checking pickup movement and output waveforms.

Troubleshooting - CD Section

Playback and Servo System Issues

Troubleshooting playback, focus servo, and tracking system issues.

Spin System and Waveform Stability

Checking spin system, waveform stability, and DRF signal.

Troubleshooting - CD Section

Spin System and VCO-PLL Troubleshooting

Troubleshooting the spin system and VCO-PLL circuit.

TOC Read and Audio Output Issues

Diagnosing TOC read errors and no sound output problems.

IC Function Tables - IC2 Part 1

IC2 (LC78622K) Pin Functions (1/2)

Pin functions for IC2 Servo/Signal Control.

IC Function Tables - IC2 Part 2

IC2 (LC78622K) Pin Functions (2/2)

Pin functions for IC2 Servo/Signal Control.

IC Function Tables - IC1 Part 1

IC1 (LA9241M) Pin Functions (1/2)

Pin functions for IC1 Servo Amp.

IC Function Tables - IC1 Part 2

IC1 (LA9241M) Pin Functions (2/2)

Pin functions for IC1 Servo Amp.

IC Function Tables - IC201 Part 1

IC201 (IX0171AW) Pin Functions (1/2)

Pin functions for IC201 System Microcomputer.

IC Function Tables - IC201 Part 2

IC201 (IX0171AW) Pin Functions (2/2)

Pin functions for IC201 System Microcomputer.

IC Function Tables - IC701 Part 1

IC701 (IX0170AW) Pin Functions (1/2)

Pin functions for IC701 System Microcomputer.

IC Function Tables - IC701 Part 2 and Other ICs

IC701 (IX0170AW) Pin Functions (2/2)

Pin functions for IC701 System Microcomputer.

IC601 (LC75396N) Pin Functions

Pin functions for IC601 Audio Processor.

IC651, IC681, IC81, IC901, IC951 Pin Functions

Pin functions for various other ICs.

IC Block Diagrams

IC3 (M56748FP) Block Diagram

Block diagram for IC3 Focus/Tracking/Spin/Slide Driver.

FL Display Information

Information and diagram for the FL display.

Parts Ordering Information

How to Order Replacement Parts

Instructions for ordering replacement parts, including contact information.

Capacitor and Resistor Part Codes

Explanation of codes used for capacitors and resistors.

Parts List - ICs and Transistors

Integrated Circuit Part Numbers

List of integrated circuits with part codes and descriptions.

Transistor Part Numbers

List of transistors with part codes and descriptions.

Parts List - Capacitors

Capacitor Part Numbers

List of capacitors with part codes and descriptions.

Parts List - Resistors

Resistor Part Numbers

List of resistors with part codes and descriptions.

Parts List - Resistors Continued

Resistor Part Numbers Continued

Continuation of resistor part numbers and descriptions.

Parts List - Resistors and Other Parts

Resistor Part Numbers Continued

Continuation of resistor part numbers and descriptions.

Other Circuitry Parts

List of other circuitry parts like connectors, fuses, etc.

Parts List - Switches and Accessories

Switch Part Numbers

List of switches with part codes and descriptions.

Accessories and Packing Parts

List of accessories, packing parts, and cords.

P.W.B. Assembly Part Numbers

Part numbers for PWB assemblies.

Parts List - CD Mechanism and Cabinet

CD Mechanism Components

List of CD mechanism parts with codes and descriptions.

Cabinet Parts

List of cabinet parts with codes and descriptions.

Parts List - Speaker Boxes and Accessories

Speaker Box Parts (CP-C471)

List of speaker box parts for CP-C471.

Speaker Box Parts (GBOXS)

List of speaker box parts for GBOXS models.

Accessories and Packing Parts

List of accessories, packing parts, and cords.

Exploded View - CD Mechanism

CD Mechanism Assembly Diagram

Exploded view of the CD mechanism assembly.

Exploded View - Cabinet

Cabinet Assembly Diagram (1/2)

Exploded view of the main cabinet assembly.

Exploded View - Cabinet

Cabinet Assembly Diagram (2/2)

Exploded view of the main cabinet assembly.

Exploded View - Front Speaker

CP-C471 Front Speaker Assembly

Exploded view of the CP-C471 front speaker assembly.

Exploded View - Center Speaker

Center Speaker Assembly

Exploded view of the center speaker assembly.

Exploded View - Surround Speaker

Surround Speaker Assembly

Exploded view of the surround speaker assembly.

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