Yamaha cdr hd1500 recorder service manual

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CDR-HD1500 2 CDR-HD1500 WALL OUTLETEQUIPMENT UNDER TESTAC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE
TO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (For 120V Models Only) When service has been completed, it is imperative to verify that all exposed conductive surfaces are properly insulated from supply circuits.  Meter impedance should be equivalent to 1500 ohms shunted by 0.15µF.  Leakage current must not exceed 0.5mA.  Be sure to test for leakage with the AC plug in both polarities. Š;teL^-oM, XwËï¼ ÇZt-�;^-oM Ëï¼x<Gwèpb{ The P.C.B.s installed in this unit are soldered using the following solder. About Lead Free Solder / ÁËï¼tmMo Side A Side BSMT REFLOW Process MI FLOW Process Solder Dip Side A / "Ø Side B / #Ø MAIN P.C.B. Lead Solder / ÖËï¼ Lead Free Solder / ÁËï¼ OPERATION P.C.B.-�Lead Free Solder / ÁËï¼ OSD P.C.B.-�Lead Free Solder / ÁËï¼ WCLK P.C.B.-�Lead Free Solder / ÁËï¼ ÁËï¼txMXmTw ¨UK-�bUz .gÌtx <GwOsÁËï¼w-�;-� * `-�b{ ~4O"H$V

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CDR-HD1500 3 CDR-HD1500 CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs a laser. Therefore, be sure to carefully follow the instructions below when servicing. 1. Laser Diode Properties - Material : GaAlAs - Wavelength : 780 to 787 nm Pulse durations and max. output at the objective lens of the laser pickup unit - DC erase mode : Max. 12 mW (Continuous) - Write mode : Max. 70 mW (Max. Cycle 98 ns, Min. Cycle 27 ns at Max. Speed) 2. When checking the laser diode emission, keep your eyes more than 30 cm away from the objective lens. WARNING: Laser Safety This product contains a laser beam component. This component may emit invisible, as well as visible radiation, which may cause eye damage. To protect your eyes and skin from laser radiation, the following precautions must be used during servicing of the unit. 1) When testing and/or repairing any component within the product, keep your eyes and skin more than 30 cm away from the laser pick-up unit at all times. Do not stare at the laser beam at any time. 2) Do not attempt to readjust, disassemble or repair the laser pick-up, unless noted elsewhere in this manual. 3) CAUTION: Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. Laser Emitting conditions: 1. This device is a Class IIIb laser device. Class IIIb means With the protective case removed, exposure to the light output from the laser, either directly or reflected by a mirror, can cause harm to the eyes, but there is no danger to the eyes from exposure to dispersed reflected laser light. (Generally 0.5 W or less) 2. Always wear eyeglasses designed for protection against laser light. 3. Always wear gloves. 4. Have no reflective objects anywhere near this device. 5. Figure A shows from where in this device the laser is emitted. 6. When switching on the power to the device for the first time, always measure the laser power with a laser power meter and check that the power is no greater than the number of Watts in the specifications. 7. Never look directly at the laser light while the laser is emitting light. 8. Do not allow the laser light to shine directly on your skin while the laser is emitting light. CLASS 1 LASER PRODUCT LASER KLASSE 1 PRODUKT LUOKAN 1 LASERLAITE KLASS 1 LASER APPART PRODUIT LASER DE CLASSE 1 LINE IN - LINE OUT IN OUT DIGITAL REC COAXIAL OPTICAL COAXIAL OPTICAL RS-�232C VIDEO VIDEO OUTS VIDEO ANALOGPLAYRL RL 4 3 CLASS 1 LASER PRODUCT LASER KLASSE 1 PRODUKT LUOKAN 1 LASERLAITE KLASS 1 LASER APPART PRODUIT LASER DE CLASSE 1 LINE IN - LINE OUT IN OUT DIGITAL REC COAXIAL OPTICAL COAXIAL OPTICAL RS-�232C VIDEO VIDEO OUTS VIDEO ANALOGPLAYRL RL 4 3 CLASS 1 LASER PRODUCT LASER KLASSE 1 PRODUKT LUOKAN 1 LASERLAITE KLASS 1 LASER APPART PRODUIT LASER DE CLASSE 1 B, G models U model Laser Radiation Point Fig. A