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CD-E750DV

SHARP SERVICE MANUAL

No.

DVD MINI SYSTEM

MODEL CD-E750DV

CD-E750DV DVD Mini System consisting of CD-E750DV
(main unit), CP-E750DV (front speaker), and
GBOXSO133AWM1 (surround speaker).

COMFACY é - In the interests of user-safety the set should be restored to its
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/- CONTENTS -\

SAFETY PRECAUTION FOR SERVICE MANUAL
VOLTAGE SELECTION ..........................................
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR
SPECIFICATIONS .....
NAMES OF PARTS
DISASSEMBLY .......
REMOVING AND REINSTALLING THE MAIN PARTS.
ADJUSTMENT ...................................
NOTES ON SCHEMATIC DIAGRAM
TYPES OF TRANSISTOR AND LED.
BLOCK DIAGRAM .............................
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ..
VOLTAGE .......................................
WAVEFORMS OF DVD CIRCUIT ..
TROUBLESHOOTING ......
FUNCTION TABLE OF IC.
FL DISPLAY ......................
REPLACEMENT PARTS LIST/EXPLODED VIEW

This document has been published to be used

SHARP CORPORATION for after sales service only.
The contents are subject to change without notice.

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CD-E750DV
SAFETY PRECAUTION FOR SERVICE MANUAL

WARNINGS
THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER
COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. THEREFORE IT IS
IMPORTANT THAT THE FOLLOWING PRECAUTIONS ARE OBSERVED DURING SERVICING TO PROTECT YOUR EYES
AGAINST EXPOSURE TO THE LASER BEAM.
1-WHEN THE CABINET IS REMOVED, THE POWER IS TURNED ON WITHOUTA COMPACT DISC IN POSITION AND THE
PICKUP IS ON THE OUTER EDGE THE LASER WILL LIGHT FOR SEVERAL SECONDS TO DETECT A DISC. DO NOT
LOOK INTO THE PICKUP LENS.
2-THE LASER POWER OUTPUT OF THE PICKUP UNIT AND REPLACEMENT SERVICE PARTS ARE ALL FACTORY
PRESET BEFORE SHIPMENT.
DO NOT ATTEMPT TO READJUST THE LASER PICKUP UNIT DURING REPLACEMENT OR SERVICING.
3-UNDER NO CIRCUMSTANCES STARE INTO THE PICKUP LENS AT ANY TIME.
4-CAUTION-USE OF CONTROLS OR ADJUSTMENTS, OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE
SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

Laser Diode Properties
Material: GaAIAs
Wavelength: 785 nm/65O nm
Emission Duration: continuous
Laser Output: max. 0.69 mW

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VOLTAGE SELECTION

Before operating the unit on mains, check the preset voltage. If the voltage is different from your local voltage, adjust the voltage
as follows.
Turn the selector with a screwdriver until the appropriate voltage number appears in the window (1 10 V, 127 V. 220 V or 230 V - 240 V AC).

AC POWER SUPPLY CORD AND AC PLUG ADAPTOR

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