Sharp cd c 451h service manual

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CD-C451H Ð 2 Ð 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