Sharp CD-K40X User Manual

In the interests of user-safetythe set should be restored to its original
condition and only parts identical to those specified be used.
Page
1. BASIC CONSTRUCTION 2, 3
2. RELATION OF THE MECHANICAL OPERATION OF THE MAIN GEAR AND THE TRAY
AND THE ELECTRIC CONTROL 4
3. TIMING CHART FOR TRAY MOVEMENT
5,6
4. TIMING CHART OF ELECTRIC SIGNALS FOR TRAY MOVEMENT 7
5. THE TURNTABLE MOVEMENT IS EXPLAINED AS FOLLOWS 8-10
6. SUPPLEMENT 11
Service Headquarters: Sharp Plaza,
Mahwah, New Jersey 07430-2135

Sharp CD-K40X Specifications

General

CD Player	Yes
Cassette Deck	Yes
Bluetooth	No
USB Port	No
Power Output	40W
Radio Tuner	FM
Speakers	2-way speakers

Summary

Basic Construction of CD Changer

Mechanical Operation: Main Gear, Tray, and Electric Control

Timing Chart for Tray Movement

Timing Chart for Electric Signals of Tray Movement

Turntable Movement Explanation

Microcomputer Input/Output for Turntable Control

Details microcomputer pins for turntable control, including photo-interrupter input and motor output signals.

Changer Mechanism Control Mode: Disc Table Position Detection

Explains how the disc table position is detected using a photo-interrupter and rotation pulses.

Turntable Position Memory and Rotation Output

Memory of Turntable Position by Rotation

Describes how turntable position is tracked by 120-degree rotations and memorized as disc addresses.

Microcomputer Output for Clockwise/Counterclockwise Rotation

Details microcomputer outputs for controlling turntable motor direction and speed.

Turntable Rotary Error Handling and STOP Control

Supplement: Disc Address Detection and Timing