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CD-C451H
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SAFETY PRECAUTION FOR
SERVICE MANUAL
Precaution to be taken when replacing and servicing the
Laser Pickup.
The AEL (Accessible Emission Level) of Laser Power Output
for this model is specified to be lower than Class I 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
outer than the lead-in position, 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 inside the unit and
replacement service parts have already been adjusted prior
to shipping.
(3) No adjustment to the Laser Power should be attempted
when replacing or servicing the Pickup.
(4) Under no circumstances look directly into the Pickup Lens
at any time.
(5) 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: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
VAROITUS! LAITTEEN K-YTT-MINEN MUULLA KUIN T-SS-
K-YTT-OHJEESSA MAINITULLA TAVALLA SAATTAA
ALTISTAA K-YTT-J-N TURVALLISUUSLUOKAN 1
YLITT-V-LLE N-KYM-TT-M-LLE LASERS-TEILYLLE.
VARNING - OM APPARATEN ANV-NDS PANNAT S-TT-N I
DENNA BRUKSANVISNING SPECIFICERAS.
KANANV-NDAREN UTS-TTAS F-R OSYNLIG
LASERSTRLNING, SOM -VERSKRIDER GR-NSEN F-R
LASERKLASS 1.
Before returning the unit to the customer after completion of a
repair or adjustment it is necessary for the following withstand
voltage test to be applied to ensure the unit is safe for the
customer to use.
Setting of Withstanding Voltage Tester and set.
Set name set value
Withstanding Voltage Tester
Test voltage 4,240 VPEAK
3,000 VRMS
Set time 6 secs
Set current(Cutoff current) 4 mA
Unit
Judgment
OK: The ÒGOODÓ lamp lights.
NG: The ÒNGÓ lamp lights and the buzzor sounds.
SHORT-CIRCUIT
AC POWER
SUPPLY CORDCONNECT THE PROBE
TO GND TERMINAL
OF PHONO TERMINAL PROBE
AC
UNIT
WITHSTANDING
VOLTAGE TESTER
+
-
OUT
IMPORTANT SERVICE NOTES (FOR U.K. ONLY)
(FOR U.K./Australia/New zealand)
LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
(Except For U.K./Australia/New zealand)
CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO
BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.
VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD. STIRRA
EJ IN I STRALEN OCH BETRAKTA EJ STRALEN MED OPTISKA INSTRUMENT.
ADVERSEL-USYNLIG LASERSTRALING VED ABNING. SE IKKE IND I
STRALEN-HELLER IKKE MED OPTISKE INSTRUMENTER.
VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE.
ALA TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.
VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD.
STIRRA EJ IN I STRALEN OCH BETRAKTA EJ STRALEN GENOM OPTISKT
INSTRUMENT.
ADVERSEL-USYNLIG LASERSTRALING NAR DEKSEL APNES. STIRR IKKE
INN I STRALEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.
CHASSIS
SCREW
CONNECT THE PROBE
TO GND TERMINAL OF
CHASSIS SCREW
