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SD-CX1W
CONTENTS
Page
SAFETY PRECAUTION OF MD SECTION FOR SERVICE MANUAL .............................................................................. 2
SAFETY PRECAUTION OF CD SECTION FOR SERVICE MANUAL .............................................................................. 3
VOLTAGE SELECTION ..................................................................................................................................................... 3
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ................................................................................................. 3
SPECIFICATIONS ............................................................................................................................................................. 4
NAMES OF PARTS ........................................................................................................................................................... 5
OPERATION MANUAL ...................................................................................................................................................... 7
DISASSEMBLY ................................................................................................................................................................ 10
REMOVING AND REINSTALLING THE MAIN PARTS ................................................................................................... 13
DESCRIPTION OF CIRCUIT FOR 1-BIT AMP. UNIT ..................................................................................................... 15
TO CHECK AND CANCEL PROTECT CIRCUIT DETECTION LINE .............................................................................. 16
TEST MODE .................................................................................................................................................................... 17
ADJUSTMENT ................................................................................................................................................................. 22
ERROR MESSAGE LIST ................................................................................................................................................. 31
EEPROM WRITING PROCEDURE ................................................................................................................................. 32
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 35
TYPES OF TRANSISTOR AND LED ............................................................................................................................... 35
BLOCK DIAGRAM ........................................................................................................................................................... 36
SCHEMATIC DIAGRAM .................................................................................................................................................. 40
WIRING SIDE OF P.W.BOARD ....................................................................................................................................... 54
WAVEFORMS OF 1 BIT AMP. CIRCUIT ......................................................................................................................... 67
WAVEFORMS OF MD CIRCUIT ..................................................................................................................................... 68
WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 70
TROUBLESHOOTING ..................................................................................................................................................... 72
FUNCTION TABLE OF IC ................................................................................................................................................ 81
FL DISPLAY ...................................................................................................................................................................... 98
PARTS GUIDE/EXPLODED VIEW
SERVICE MANUAL
SHARP CORPORATION
No. S3117SDCX1WBL
• 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.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SD-CX1W(BL)
SD-CX1W(GR)
SD-CX1W 1-Bit Digital Audio System consisting of SD-CX1W (main
unit) and CP-CX1W (speaker system).
MODEL
1-BIT DIGITAL AUDIO SYSTEM
Summary of Contents for SD-CX1W(BL)
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