Sharp cd bk 250 w service manual
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Page 1
CD-B K250W/ C D-B K2600W/C D-B K270W
SHARP SERVICE MANUAL
No. $5136CDBK250W
MINI COMPONENT SYSTEM
MODEL CD-BK250W
CD-BK250W Mini Component System consisting of
CD-BK250W (main unit) and CP-BK250 (speaker system).
MINI COMPONENT SYSTEM
CD-BK2600W Mini Component System consisting of
CD-BK2600W (main unit) and CP-BK2600 (speaker system).
MINI COMPONENT SYSTEM
MODEL CD-BK270W
Illustration: CD-BK27OW
CD-BK270W Mini Component System consisting oi
[filCOMPACT /// CD-BK27OW (main unit), CP-BK270 (front speakers) and
[15$ CD'R/RW DISC GBOXSOO70AWM1 (surround speakers).
Playable
DIGITAL AU DIO
- In the interests ol user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
/- CONTENTS %
SAFETY PRECAUTION FOR SERVICE MANUAL .....
VOLTAGE SELECTION ...............................................
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ..
SPECIFICATIONS ......
NAMES OF PARTS
OPERATION MANUAL
DISASSEMBLY ...............
REMOVING AND REINSTALLING THE MAIN PARTS ..
ADJUSTMENT ........ . 13
BLOCK DIAGRAM .. 17
SCHEMATIC DIAGRA 20
VOLTAGE ............................................. 38
NOTES ON SCHEMATIC DIAGRAM
TYPES OF TRANSISTOR AND LED
WAVEFORMS OF CD 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.
Page 1
CD-B K250W/ C D-B K2600W/C D-B K270W
SHARP SERVICE MANUAL
No. $5136CDBK250W
MINI COMPONENT SYSTEM
MODEL CD-BK250W
CD-BK250W Mini Component System consisting of
CD-BK250W (main unit) and CP-BK250 (speaker system).
MINI COMPONENT SYSTEM
CD-BK2600W Mini Component System consisting of
CD-BK2600W (main unit) and CP-BK2600 (speaker system).
MINI COMPONENT SYSTEM
MODEL CD-BK270W
Illustration: CD-BK27OW
CD-BK270W Mini Component System consisting oi
[filCOMPACT /// CD-BK27OW (main unit), CP-BK270 (front speakers) and
[15$ CD'R/RW DISC GBOXSOO70AWM1 (surround speakers).
Playable
DIGITAL AU DIO
- In the interests ol user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
/- CONTENTS %
SAFETY PRECAUTION FOR SERVICE MANUAL .....
VOLTAGE SELECTION ...............................................
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ..
SPECIFICATIONS ......
NAMES OF PARTS
OPERATION MANUAL
DISASSEMBLY ...............
REMOVING AND REINSTALLING THE MAIN PARTS ..
ADJUSTMENT ........ . 13
BLOCK DIAGRAM .. 17
SCHEMATIC DIAGRA 20
VOLTAGE ............................................. 38
NOTES ON SCHEMATIC DIAGRAM
TYPES OF TRANSISTOR AND LED
WAVEFORMS OF CD 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.
Page 2
CD-BK250W/CD-BK2600W/CD-BK270W
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 THATTHE FOLLOWING PRECAUTIONS ARE OBSERVED DURING SERVICING TO PROTECT YOUR EYES
AGAINST EXPOSURE TO THE LASER BEAM.
1-WHEN THE CABINET IS REMOVED, THE POWER ISTURNED 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: GaAlAs
Wavelength: 780 rim
Emission Duration: continuous
Laser Output: max. 0.6 mW
llllIlIIIIII mfimfimfifimfimmfim
lIIlI IIIIIIII IIII WIWW
/
CLASS 1 LASER PRRDIICT
APPAREIL II LASER DE CLASSE1
PRODUCT!) LASER DE DLASE 1
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 selectorwith a screwdriver until the appropriate voltage number appears in thewindow (1 10 V, 127 V, 220 V or 230 V-240 V AC).
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR
QACCAOOOBAWOO QACCLOOOSAWOO
QACCE001 OAWOO QPLGAOOOBAWZZ QPLGA0004AWZZ
QACCJ0007AW00
Page 2
CD-BK250W/CD-BK2600W/CD-BK270W
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 THATTHE FOLLOWING PRECAUTIONS ARE OBSERVED DURING SERVICING TO PROTECT YOUR EYES
AGAINST EXPOSURE TO THE LASER BEAM.
1-WHEN THE CABINET IS REMOVED, THE POWER ISTURNED 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: GaAlAs
Wavelength: 780 rim
Emission Duration: continuous
Laser Output: max. 0.6 mW
llllIlIIIIII mfimfimfifimfimmfim
lIIlI IIIIIIII IIII WIWW
/
CLASS 1 LASER PRRDIICT
APPAREIL II LASER DE CLASSE1
PRODUCT!) LASER DE DLASE 1
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 selectorwith a screwdriver until the appropriate voltage number appears in thewindow (1 10 V, 127 V, 220 V or 230 V-240 V AC).
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR
QACCAOOOBAWOO QACCLOOOSAWOO
QACCE001 OAWOO QPLGAOOOBAWZZ QPLGA0004AWZZ
QACCJ0007AW00