Sharp CD-E88 User Manual

CD-E88
No. S3318CDE88///
CONTENTS
Page
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)....................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 4
DISASSEMBLY.................................................................................................................................................................. 6
BLOCK DIAGRAM ............................................................................................................................................................. 9
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 12
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 29
TYPES OF TRANSISTOR AND LED............................................................................................................................... 29
VOLTAGE ........................................................................................................................................................................ 30
WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 31
FL DISPLAY..................................................................................................................................................................... 32
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)
SERVICE MANUAL
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
MINI COMPONENT SYSTEM
MODEL CD-E88
CD-E88 Mini Component System consisting of CD-E88
(main unit) and CP-E88 (speaker system).
CD-E700/CD-E77
Page
REMOVING AND REINSTALLING THE MAIN PARTS.............. 9
ADJUSTMENT ..........................................................................10
TROUBLESHOOTING .............................................................. 37
FUNCTION TABLE OF IC ........................................................ 41
This Service Manual is for the CD-E88, which is a minor-
modification model of the CD-E700/CD-E77, This manual,
therefore, describes only the changed points from the service
manual. Please refer to the CD-E700/CD-E77, service manual
(No. S1301CDE700//) together with this manual.

Sharp CD-E88 Specifications

General

Type	Mini component system
CD Player	Yes
Bluetooth	No
USB Port	No
Cassette Deck	Yes
Speakers	Yes
Dimensions	290 x 180 x 300 mm
Radio Tuner	FM/AM

Summary

Important Service Notes

Safety Checks Before Returning Product

Perform safety checks like lead dress, protective devices, and leakage current before returning the audio product.

Product Specifications

CD-E88 and CP-E88 Specifications

Details electrical and performance characteristics of the main unit and speaker system.

Component Identification

Front Panel and Display Identification

Identifies buttons, knobs, and indicators on the front panel and display of the CD-E88 unit.

Rear Panel Connections

Identifies input/output terminals and connectors on the rear panel of the CD-E88 unit.

Remote Control and Speaker Components

Identifies functions of the remote control and components of the CP-E88 speaker system.

Disassembly Guide

Main Unit Disassembly Steps

Provides step-by-step instructions for disassembling the main CD-E88 unit.

Speaker System Disassembly Steps

Provides step-by-step instructions for disassembling the CP-E88 speaker system.

System Block Diagrams

CD Servo and Sled Driver Block Diagram (1/3)

Illustrates the functional blocks of the CD servo and sled driver circuits.

Circuit Schematics

Key Circuit Schematics Overview

Presents detailed circuit diagrams for major functional blocks of the audio system.

Printed Circuit Board Layouts

Main PWB-A1 Wiring Layout (1/7)

Illustrates the component layout and wiring on the main PWB-A1.

CD Servo PWB-C Wiring Layout (5/7)

Illustrates the component layout and wiring on the CD servo PWB-C.

Power PWB-B1 Wiring Layout (7/7)

Illustrates the component layout and wiring on the power PWB-B1.

Schematic Diagram Notes

Resistor and Capacitor Notation

Explains symbols and notations used for resistors and capacitors in schematics.

Transistor and LED Identification

Transistor Pinouts and Types

Shows pin configurations and types for various transistors used in the unit.

DC Voltage Specifications

IC Voltage Checkpoints

Lists DC voltage readings for various IC pins under normal operating conditions.

CD Circuit Waveform Analysis

Signal Waveform Analysis

Displays sample waveforms for critical signals in the CD circuit for troubleshooting.

Fluorescent Display Grid Assignment

FL Display Grid Assignment and Anode Connections

Details the grid assignment and anode connection mapping for the FL display.

Replacement Parts Guide

Capacitor and Resistor Part Code Explanations

Explains the coding system for capacitors and resistors used in replacement parts.

Packing Configuration (USA Only)

Packing Details for Speakers, Unit, and Accessories

Illustrates how speakers, unit, accessories, and packing cases are arranged for shipment.