Pioneer dvr 720 hs service manual
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Extracted text from pioneer dvr 720 hs service manual (Ocr-read)
Page 1
DVR-520H-S 2 1234 1234 C D F A B E SAFETY INFORMATION WARNING! DEVICE INCLUDES LASER DIODE WHICH EMITS INVISIBLE INFRARED RADIATION WHICH IS DANGEROUS TO EYES. THERE IS A WARNING SIGN ACCORDING TO PICTURE 1 INSIDE THE DEVICE CLOSE TO THE LASER DIODE.LASER Picture 1 Warning sign for laser radiation LABEL CHECK LASER DIODE CHARACTERISTICS MAXIMUM OUTPUT POWER : 70 mw WAVELENGTH : 658 nm IMPORTANT THIS PIONEER APPARATUS CONTAINS LASER OF CLASS 1. SERVICING OPERATION OF THE APPARATUS SHOULD BE DONE BY A SPECIALLY INSTRUCTED PERSON. P U L L - O P E N S T A N D B Y / O ND V D H D D OPEN/CLOS E RECO NE TO UC H CO PY D V I N / O U T Î CLAMP signals for detecting the loading state are detected by the drive CPUs, and the design prevents laser diode oscillation when the CLAMP signal turns OFF. In normal operation, if no disc is clamped, the laser diode oscillation is disabled. However, the interlock does not always operate in the test mode. 2.When the cover is opened, close viewing of the objective lens with the naked eye will cause exposure to a Class 3A laser beam. Additional Laser Caution 1. The ON/OFF(ON:low level,OFF:high level) status of the DRW2194
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DVR-520H-S3 5678 567 8 C D F A B E [ Important symbols for good services ]In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely. When you find the procedures bearing any of the symbols, be sure to fulfill them: 2. Adjustments To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable. In accordance with the procedures or instructions described in this manual, adjustments should be performed. 3. Cleaning For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning, proper cleaning should be performed to restore their performances. 5. Lubricants, glues, and replacement parts Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed ones should be used. 4. Shipping mode and shipping screws To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or the shipping screws should be installed before shipping out in accordance with this manual, if necessary. 1. Product safety You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and should keep the safety during servicing by following the safety instructions described in this manual.