Read Sharp SD-EX100H (serv.man3) Service Manual online
– 1 –
SD-EX100H
SERVICE MANUAL
SHARP CORPORATION
No. S6249SDEX100H
SD-EX100H
MODEL
1-BIT DIGITAL AUDIO SYSTEM
condition and only parts identical to those specified should be used.
CONTENTS
Page
SAFETY PRECAUTION OF CD SECTION FOR SERVICE MANUAL .............................................................................. 2
IMPORTANT SERVICE NOTES (FOR U.K. ONLY) .......................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 3
DISASSEMBLY .................................................................................................................................................................. 5
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 ........................................................................................................................ 80
FL DISPLAY ..................................................................................................................................................................... 85
PARTS GUIDE/EXPLODED VIEW
IMPORTANT SERVICE NOTES (FOR U.K. ONLY) .......................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 3
DISASSEMBLY .................................................................................................................................................................. 5
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 ........................................................................................................................ 80
FL DISPLAY ..................................................................................................................................................................... 85
PARTS GUIDE/EXPLODED VIEW
Display
