Sharp SD-EX101 Service Manual - Page 1

Illustration: SD-EX100 Illustration: SD-EX101 SD-EX100 SD-EX101 SERVICE MANUAL No. S6248SDEX100/ 1-BIT DIGITAL AUDIO SYSTEM MODEL SD-EX100 SD-EX100 1-Bit Digital Audio System consisting of SD-EX100 (main unit) and CP-EX100 (speaker system). MODEL SD-EX101 SD-EX101 1-Bit Digital Audio System consisting of SD-EX101 (main unit) and CP-EX101 (speaker system). • In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified should be used. CONTENTS Page SPECIFICATIONS ...2 NAMES OF PARTS ...2 DISASSEMBLY ...4 REMOVING AND REINSTALLING THE MAIN PARTS ...8 WIRING PROCESS DIAGRAM ...8 EXPLANATION OF CD MECHANISM ...9 ADJUSTMENT ...14 DESCRIPTION OF CIRCUIT FOR 1-BIT UNIT ...16 TO CHECK AND CANCEL PROTECT CIRCUIT DETECTION LINE 17 TEST MODE ...18 NOTES ON SCHEMATIC DIAGRAM ...23 TYPES OF TRANSISTOR AND LED ...23 VOLTAGE ...24 BLOCK DIAGRAM ...25 SCHEMATIC DIAGRAM ...30 WIRING SIDE OF P.W.BOARD ...45 WAVEFORMS OF 1-BIT CIRCUIT ...58 WAVEFORMS OF CD CIRCUIT ...59 CD OPTICAL PICKUP LENS CLEANING ...61 TROUBLESHOOTING ...61 FUNCTION TABLE OF IC ...66 CONNECTION OF EXTENSION CABLE ...79 FL DISPLAY ...84 PARTS GUIDE/EXPLODED VIEW SHARP CORPORATION - 1 - This document has been published to be used for after sales service only. The contents are subject to change without notice.