Sharp CD-C422 User Manual

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CD-C422/C422C/C2800/C2800C
No. S3820CDC422//
Illustration: CD-C422/C422C
Illustration: CD-C2800/C2800C
CONTENTS
Page
IMPORTANT SERVICE NOTES (For U.S.A. Only) .......................................................................................................... 2
SPECIFICATIONS .............................................................................................................................................................2
NAMES OF PARTS .......................................................................................................................................................... 3
OPERATION MANUAL..................................................................................................................................................... 5
QUICK GUIDE .................................................................................................................................................................. 6
DISASSEMBLY................................................................................................................................................................. 7
REMOVING AND REINSTALLING THE MAIN PARTS.................................................................................................. 10
ADJUSTMENT................................................................................................................................................................ 11
NOTES ON SCHEMATIC DIAGRAM ............................................................................................................................. 13
WAVEFORMS OF CD CIRCUIT..................................................................................................................................... 14
BLOCK DIAGRAM .......................................................................................................................................................... 15
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD.............................................................................................18
TROUBLESHOOTING (CD CHANGER CONTROL / CD SECTION)............................................................................. 32
FUNCTION TABLE OF IC .............................................................................................................................................. 36
FL DISPLAY.................................................................................................................................................................... 42
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF THE SET (For U.S.A. Only)
CD-C422/C422C
CP-C422, REAR SPEAKER SYSTEM,
Constitute CD-C422/C422C.
CD-C2800/C2800C
CP-C2800, REAR SPEAKER SYSTEM,
Constitute CD-C2800/C2800C.
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
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

Sharp CD-C422 Specifications

General

Type	Stereo System
CD Player	Yes
Radio Tuner	FM/AM
Bluetooth	No
USB Port	No
CD Changer	No
Remote Control	Yes
Cassette Deck	No
Power Output	20 W
Speakers	Built-in

Summary

Important Service Notes

Specifications

Detailed technical specifications for various sections of the unit.

Block Diagram (1/3)

Block Diagram (2/3)

Continues the system's electronic block diagram.

Block Diagram (3/3)

Final part of the system's electronic block diagram.

Schematic Diagram / Wiring Side of P.W.Board (1/4)

Schematic Diagram / Wiring Side of P.W.Board (2/4)

Schematic Diagram / Wiring Side of P.W.Board (3/4)

Schematic Diagram / Wiring Side of P.W.Board (4/4)

Schematic Diagram (1/10)

Schematic Diagram (2/10)

Schematic Diagram (3/10)

Schematic Diagram (4/10)

Schematic Diagram (5/10)

Schematic Diagram (6/10)

Schematic Diagram (7/10)

Schematic Diagram (8/10)

Schematic Diagram (9/10)

Schematic Diagram (10/10)

Troubleshooting (CD Section)

When CD Does Not Function

Steps to troubleshoot when the CD unit doesn't operate.

When Turntable Fails

Steps to troubleshoot turntable stop/move issues.

When CD Tray Fails

Steps to troubleshoot CD tray open/close issues.

CD Function Not Working

Steps to troubleshoot when CD functions are unresponsive.

Playback Issues

Troubleshooting steps for playback problems like loading or tracking.

Tracking System Issues

Procedures for checking and resolving tracking system issues.

Spin System Issues

Steps to troubleshoot the disc spin system.

VCO-PLL System Issues

Steps to troubleshoot the VCO-PLL system.

No Sound Output

Troubleshooting steps when no sound is emitted despite normal signals.

Function Table of IC

IC2 Pin Functions (1/2)

IC2 Pin Functions (2/2)

IC2 Block Diagram

IC1 VHILA9241M/-1 Servo Amp. (LA9241M) (1/2)

Pin functions and descriptions for the IC1 Servo Amplifier.

IC1 VHILA9241M/-1 Servo Amp. (LA9241M) (2/2)

Continues pin functions for the IC1 Servo Amplifier.

IC1 Block Diagram

IC701 RH-iX0191AWZZ System Microcomputer (IX0191AW) (1/2)

Pin functions for the IC701 System Microcomputer.

IC701 RH-iX0191AWZZ System Microcomputer (IX0191AW) (2/2)

IC701 Block Diagram