Sharp cd c 290 x service manual

Page 1

CD-C290X

SHARP SERVICE MANUAL

No. $9910CDC290X

CD-C290X

CD-CZQDX mini component system consisting of
CD-CZQDX mini component system,CP-0290
speaker system.

O SRS technology Licensed lrom SRS Labs. SRS technol-

ogy holds the following patents: u_s_ Patent No_ - In the interests of user-salety the set should be restored to its
4,748,669 and US. Patent No. 4,841,572. original condition and only parts identical to those specified be
0 SRS, the SRS Logo (.)and the scum: REYRIEVAL svsrEM 55d
are registered trademarks of SRS Labs, Inc. in the United
States.
I ICOMPACT
DIGITAL AUDIO

/- CONTENTS %

SAFETY PRECAUTION FOR SEVICE MANUAL
VOLTAGE SELECTION
SPECIFICATIONS
NAMES OF PARTS ..
OPERATION MANUA .
DISASSEMBLY .............
REMOVING AND REINSTALLING THE MAIN PARTS.
ADJUSTMENT ...............................................................
NOTES ON SCHEMATIC DIAGRAM ..
BLOCK DIAGRAM .....................
WAVEFORMS OF CD CIRCUIT
SCHEMATIC DIAGRAM / WIRING SIDE OF P,W.BOARD ..
TROUBLESHOOTING (CD CHANGER CONTROL / CD SECTION)
FUNCTION TABLE OF IC
FL DISPLAY .....................
REPLACEMENT PARTS LIST/EXPLODED VIEW

SHARP CORPORATION This document has been published to be used

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

Page 1

CD-C290X

SHARP SERVICE MANUAL

No. $9910CDC290X

CD-C290X

CD-CZQDX mini component system consisting of
CD-CZQDX mini component system,CP-0290
speaker system.

O SRS technology Licensed lrom SRS Labs. SRS technol-

ogy holds the following patents: u_s_ Patent No_ - In the interests of user-salety the set should be restored to its
4,748,669 and US. Patent No. 4,841,572. original condition and only parts identical to those specified be
0 SRS, the SRS Logo (.)and the scum: REYRIEVAL svsrEM 55d
are registered trademarks of SRS Labs, Inc. in the United
States.
I ICOMPACT
DIGITAL AUDIO

/- CONTENTS %

SAFETY PRECAUTION FOR SEVICE MANUAL
VOLTAGE SELECTION
SPECIFICATIONS
NAMES OF PARTS ..
OPERATION MANUA .
DISASSEMBLY .............
REMOVING AND REINSTALLING THE MAIN PARTS.
ADJUSTMENT ...............................................................
NOTES ON SCHEMATIC DIAGRAM ..
BLOCK DIAGRAM .....................
WAVEFORMS OF CD CIRCUIT
SCHEMATIC DIAGRAM / WIRING SIDE OF P,W.BOARD ..
TROUBLESHOOTING (CD CHANGER CONTROL / CD SECTION)
FUNCTION TABLE OF IC
FL DISPLAY .....................
REPLACEMENT PARTS LIST/EXPLODED VIEW

SHARP CORPORATION This document has been published to be used

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

Page 2

CD-CZQOX
SAFETY PRECAUTION FOR

SERVICE MANUAL Lam Bliteerri' 5:212:
Wavelength 780 nm
Emission Duration: continuous

Laser Output. max. 0.6 mW

Precaution to be taken when replacing and servicing the
Laser Pickup.

The AEL (Accessible Emission Level) of Laser Power Output
forthis model is specified to be lowerthan Class | Requirements.
However, the following precautions must be observed during
servicing to protect your eyes against exposure to the Laser
beam

(1) When the cabinet has been removed, the power is turned
on without a compact disc, and the Pickup is on a position
outerthan the lead-in position, the Laserwill light forseveral
seconds to detect a disc. Do not look into the Pickup Lens.

(2) The Laser Power Output of the Pickup inside the unit and
replacement service parts have already been adjusted prior

to shipping. CAUTION
(3) No adjustment to the Laser Power should be attempted
when replacing or servicing the Pickup. cuss l LASER PliflDUDT
- - - - APPAREIL A LASER DE cum 1
(4) gtn::;lt1i%:lrcumstances look directly Into the Pickup Lens "mm um E m
(5) CAUTION - Use of controls or adjustments, or performance _
of procedures other than those specified herein may result ragga $33285? SVSB' 5 we as 3 CLASS
in hazardous radiation exposure. a The CLASS 1 LASER PRODUCT label 15 located on the
rear cover.
_ _ .Use of controls, adjustments or performance of proce-
Laser Diode Properties dures other than these specilied herein may result In hazA
Material' GaAlAs ardous radiation exposure.
Wavelength: 780 nm As the laser beam used in this compact dlsc player l5
- - - . - harmful to the eyes do not attempt to disassemble the
Emls5lon Duration. contlnuous cabinet Reler servicing to qualified personnel only.
Laser Output: max. 0.6 mW

VOLTAGE SELECTION

The voltage selector is located on the AC voltage selector box. If adjustment is necessary, ensure to remove plug of AC cord from
AC socket and use a screwdriver to turn the selector in either direction. The correct voltage figure is displayed in the window below
to the adjustment screw.

QACCE0007AW00

QPLGA0004AWZZ

Figure 2 POWER SUPPLY CORD AND PLUG ADAPTOR