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MD-MX30/MX30W
CONTENTS
MD-MX30
SERVICE MANUAL
SHARP CORPORATION
No.S4025MDMX30//
• 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.
Page
SAFETY PRECAUTION FOR SERVICE MANUAL (FOR MD-MX30W) ............................................................................ 2
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY) ....................................................................................................... 3
VOLTAGE SELECTION (FOR MD-MX30W) ..................................................................................................................... 3
SPECIFICATIONS (FOR MD-MX30) ................................................................................................................................. 4
SPECIFICATIONS (FOR MD-MX30W) .............................................................................................................................. 5
NAMES OF PARTS ........................................................................................................................................................... 6
OPERATION MANUAL ...................................................................................................................................................... 8
DISASSEMBLY ................................................................................................................................................................ 10
REMOVING AND REINSTALLING THE MAIN PARTS ................................................................................................... 12
TEST MODE .................................................................................................................................................................... 15
ADJUSTMENT ................................................................................................................................................................. 20
EEPROM WRITING PROCEDURE ................................................................................................................................. 28
EXPLANATION OF ERROR DISPLAY ............................................................................................................................ 30
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 31
TYPE OF TRANSISTOR AND LED ................................................................................................................................. 31
BLOCK DIAGRAM ........................................................................................................................................................... 32
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ............................................................................................. 37
WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 65
WAVEFORMS OF MD CIRCUIT ..................................................................................................................................... 66
TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 68
TROUBLESHOOTING (MD SECTION) ........................................................................................................................... 72
FUNCTION TABLE OF IC ................................................................................................................................................ 76
REPLACEMENT PARTS LIST/EXPLODED VIEW/PACKING OF THE SET (FOR U.S.A.)
MD-MX30 MD Compact Component System
consisting of MD-MX30(main unit) and CP-
MX30(speaker system).
MD-MX30W
MD-MX30W MD Compact Component System
consisting of MD-MX30W(main unit) and CP-
MX30W(speaker system).
(MD-MX30W only)