Sony cdx gt 620 u service manual

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CDX-GT620U/GT627UE/GT670U/GT670US 2 Notes on chip component replacement - Never reuse a disconnected chip component. - Notice that the minus side of a tantalum capacitor may be dam-aged by heat. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostat- ic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The fl exible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc re fl ective surface by the objective lens in the optical pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens. SERVICE NOTES CAUTION Use of controls or adjustments or performance of procedures other than those speci fi ed herein may result in hazardous radiation exposure. If the optical pick-up block is defective, please replace the whole optical pick-up block. Never turn the semi- fi xed resistor located at the side of optical pick-up block. optical pick-up semi-fixed resistor TEST DISCS Please use the following test discs for the check on the CD section. YDES-18 (Part No. 3-702-101-01) P A TD-012 (Part No. 4-225-203-01) SW CDX-GT670U: E, Saudi Arabian model/GT670US: Tuning range: SW1: 2,940 – 7,735 kHz SW2: 9,500 – 18,135 kHz (except for 10,140 – 11,575 kHz) Antenna (aerial) terminal: External antenna (aerial) connector Intermediate frequency: 10.7 MHz/450 kHz Sensitivity: 30 μV USB Player sectionInterface: USB (Full-speed) Maximum current: 500mA Power amplifi er sectionOutputs: Speaker outputs (sure seal connectors) Speaker impedance: 4 – 8 ohms Maximum power output: 52 W × 4 (at 4 ohms) GeneralOutput: Audio outputs terminal (front/rear) Subwoofer output terminal (mono) Power antenna (aerial) relay control terminal Power amplifi er control terminal Inputs: Telephone ATT control terminal Remote controller input terminal Antenna (aerial) input terminal AUX input jack (stereo mini jack) Tone controls: Low: ±10 dB at 60 Hz (XPLOD) Mid: ±10 dB at 1 kHz (XPLOD) High: ±10 dB at 10 kHz (XPLOD) Power requirements: 12 V DC car battery (negative ground (earth)) Dimensions: Approx. 178 × 50 × 180 mm (7 1/8 × 2 × 7 1/8 in.) (w/h/d) Mounting dimensions: Approx. 182 × 53 × 162 mm (7 1/4 × 2 1/8 × 6 1/2 in.) (w/h/d) Mass: Approx. 1.2 kg (2 lb. 11 oz.) Supplied accessories: Card remote commander: RM-X151 Parts for installation and connections (1 set) Design and specifi cations are subject to change without notice. SAFETY-RELATED COMPONET WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ! LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC- TIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON- NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.