Harman kardon hd 755 service manual
This is the 65 pages manual for harman kardon hd 755 service manual.
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Extracted text from harman kardon hd 755 service manual (Ocr-read)
Page 1
LASER BEAM SAFETY PRECAUTIONS CLASS 1 LASER PRODUCTCAUTION Invisible laser radiation when the unit is open. Do not stare into beam. CAUTION: USE OF ANY CONTROLS, ADJUSTMENT, OR PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin. This compact disc player uses a pickup that emits a laser beam. The las\ er beam is emitted from the location shown in the figure. When checking the laser diode, be sure to\ keep your eyes at least 1 foot away from the pickup lens when the diode is turned on. Do not look directly \ at the laser beam. CAUTION: Using controls and adjustment, or doing procedures other than those spec\ ified herein, may result in hazardous radiation exposure. 2 HD755
Page 2
SAFETY PRECAUTIONS This symbol is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to consti- tute a risk of electric shock to persons. This symbol is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. Caution: T o prevent electric shock do not use this (polarized) plug with an extension cord, recep- tacle or other outlet unless the blades can be fully inserted to prevent blade exposure. Attention: Pour prevenir les chocs electriques ne pas utiliser cetre fiche polarisee avec un prolongateur, une prise de courant ou une au- tre sortie de courant, sauf si les lames prevent etre inserees a fond-sans en laisser aucune partie a decouvert. HANDLING LASER PICKUP The laser diode in the optical system of this player can be damaged by e\ lectrostatic discharge from your clothes or your body. Proper electrostatic grounding for service p\ ersonal is required during servicing. BEFORE REPAIRING THE COMPACT DISC PLAYER Preparation Human Body Grounding: Many of the components used in this compact disc player, including the l\ aser pickup, are sensitive to electrostatic discharge. Service personal should be grounded with an el\ ectrostatic armband (1 Mohm). Caution: Static charge on clothing does not escape through a body grounding wrist\ band. Be careful not to contact the pickup or electrical components with your \ clothing. Workbench and Tool Grounding: A properly-grounded electroconductive plate (1Mohm) or metal sheet should be fit\ ted to the workbench surface. Tools and instruments (such as soldering irons and scopes) should be gr\ ounded to prevent AC leakage. Note: Laser diodes are so susceptible to damage from static electricity \ that, even if a static discharge does not ruin a diode, it can shorten its life or cause it to work improperly\ . WARNING To prevent fire or shock hazard, do not expose the unit to rain or moisture. 3 HD755