Sharp cd es 700 service manual

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CD-ES700/CD-E877

SHARP SERVICE MANUAL

@nse my 50D-----.-

DIGITAL AUDIO Playable

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CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications
[2] Names of parts..

CHAPTER 2. ADJUSTMENTS
[1] Mechanism section
[2] Tuner section .............
[3] CD section ......................................
[4] CD Changer mechanism section

CHAPTER 3. MECHANISM BLOCKS
[1] Caution on disassembly ................................ 3-1
[2] Removing and reinstalling the main parts ...... 3-4

CHAPTER 4. DIAGRAMS
[1] CD Block diagrams ...................................... 4-1
[2] Main Block diagrams ..................................... 4-2

CHAPTER 5. CIRCUIT DESCRIPTION
[1] Notes on schematic diagram...
[2] Types of transistor and LED.
[3] Waveforms of CD circuit ......... ..
[4] Voltage .......................................................... 5-3

No.854280DESYOm

MINI COMPONENT SYSTEM

MODEL CD-ES7OO

CD-ES700 Mini Component System consisting of CD-ES700
(main unit) and CP-ES700 (speaker system).

MODEL CD-ES77

CD-ES77 Mini Component System consisting of
CD-ES77 (main unit) and CP-ES77 (speaker sys-
tem).

- 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

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CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS
LAYOUT

[1] Wiring side of PWB .....
[2] Schematic diagram .....

..6-1
..6-7

CHAPTER 7. FLOWCHART

[1] Troubleshooting ............................................. 7-1
CHAPTER 8. OTHERS

[1] Function table of IC ....................................... 8-1
[2] FL Display .................................................... 8-11
Parts Guide

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Parts marked with "A. " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for
maintaining the safety and performance of the set.

This document has been published to be used

SHARP CO RPO RATIO N for after sales service only.

The contents are subject to change without notice.

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CD-ES700/CD-ES77
IMPORTANT SERVICE NOTES

BEFORE RETURNING THE AUDIO PRODUCT

BEFORE RETURNING THE AUDIO PRODUCT

(Fire & Shock Hazard)

Before returning the audio product to the user, perform the following

safety checks.

1. Inspect all lead dress to make certain that leads are not pinched or
that hardware is not lodged between the chassis and other metal
parts in the audio product.

2. Inspect all protective devices such as insulating materials, cabinet,
terminal board, adjustment and compartment covers or shields,
mechanical insulators etc.

3. To be sure that no shock hazard exists, check for leakage current in
the following manner.

* Plug the AC line cord directly into a 120 volt AC outlet.

Using two clip leads, connect a 1.5 kohm, 10 watt resistor paralleled

by a 0.15 pF capacitor in series with all exposed metal cabinet parts

and a known earth ground, such as conduit or electrical ground con-
nected to earth ground.

Use a VTVM or VOM with 1000 ohm per volt, or higher, sensitivity to
measure the AC voltage drop across the resistor (See diagram).

* Connect the resistor connection to all exposed metal parts having a
return path to the chassis (antenna, metal cabinet, screw heads,
knobs and control shafts, escutcheon, etc.) and measure the AC
voltage drop across the resistor.

All check must be repeated with the AC line cord plug connection
reversed.

Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp. AC.) or
more is excessive and indicates a potential shock hazard which must
be corrected before returning the audio product to the owner.

é-fQ

VTVM
-0 AC SCALE 0'

1.5 kohms
10 W

0.15mF

TEST PROBE CONNECT TO

KN OWN EARTH
GROUND

TO EXPOSED
METAL PARTS