Sony hcd dx 155 service manual
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2 HCD-DX155/DX255 MODEL IDENTIFICATION – Rear Panel – Model Part No. DX155 : US model 2-661-240-0[] DX255 : US model 2-661-240-1[] DX155 : SP model 2-661-240-2[] DX155 : MX model 2-661-240-3[] DX155 : CND model 2-661-240-4[] DX255 : CND model 2-661-240-5[] DX155 : AUS model 2-661-240-6[] DX155 : E3 model 2-661-240-7[] -Abbreviation AU S: Australian model CND : Canadian model E3 : 240V AC area in E model MX : Mexican model SP : Singapore model *D epending on the sound field settings and the source, there may be no sound output. Inputs TV/V CR (AUDIO IN) Sensitivity: 450/250 mV AUDIO IN/MIC Sensitivity: 250/125 mV Outputs (Analog) Phones Accepts low-and high- impedance headphones. DVD systemLaser Sem iconductor laser (DVD: λ = 650 nm) (CD: λ = 790 nm) Emission duration: conti nuous Si gnal format system North American, Latin, and Mexican models: NTSC Ot her models: NTSC/PAL Tu ner sectionSystem PLL quartz-locked digital synthesizer system FM tuner section Tuning range North American models: 87.5 – 108.0 MHz (100 kHz step) Other mo dels: 87.5 – 108.0 MHz (50 kHz step) Antenna (aerial) FM wire antenna (aerial) An tenn a (aerial) terminals 75 ohms, unbalanced Inte rmediate frequency 10.7 MHz AM t uner section Tuning range Middle Eastern models: 531-1,602 kHz (with the interval set at 9 kHz) Asian models: 531-1,602 kHz (with the interval set at 9 kHz) 530-1,710 kHz (with the interval set at 10 kHz) North American and Latin American models: 530-1,710 kHz (with the interval set at 10 kHz) 531-1,710 kHz (with the interval se t at 9 kHz) Antenna (aerial) AM loop antenna (aerial) Inte rmediate frequency 450 kHz Video sectionOutputs V S VIDEO: Y: 1 Vp-p 75 ohms C: 0.286 Vp-p 75 ohmsID EO: 1 Vp-p 75 ohms COMPONENT: Y: 1 Vp-p 75 ohms PB/CB, PR/CR: 0.7 Vp-p 75 ohms Other models: Stereo mode (rated) 108 W + 108 W (3 ohms at 1 kHz, 1 % THD) Surround mode (reference) RMS output power, 10 % THD Front: 143 W + 143 W (with SS-TS52) Center*: 143 W (with SS-CT51) Surround*: 143 W + 143 W (with SS-TS51) Subwoo fer*: 285 W (with SS-WS52B) General Power requirements North American and Mexican models: 120 V AC, 60 Hz Latin American models: 110 – 240 V AC, 50/60 Hz Other models: 220 – 240 V AC, 50/60 Hz Power consumption On: 140 W (Latin American models of DX1 55), 150 W (Mexican and other models of DX155), 160 W (DX255) Standby: 0.3 W (at the Power Saving mode) Dimens ions (approx.) 430 × 86 × 418 mm ( 17 ×3 1/2 × 16 3/4 inches) (w/h/d) incl. projecting parts Mass (approx.) 5.0 kg (11 lb 1 oz) Design and specifications are subject to change without notice. COAXIAL AM FM75 SPEAKER FRONT R FRONT L SUR R SUR L CENTER WOOFER COMPONENT VIDEO OUT TV/VCR MONITOR OUT ANTENNA (DVD ONLY )YPB/CBPR/CR RLAUDIO I N VIDEO (DVD ONLY ) S VIDE O Par ts No.
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3 HCD-DX155/DX255 UNLEADED SOLDER Boards requiring use of unleaded solder are printed with the lead- free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size) : LEAD FREE MARK Unleaded solder has the following characteristics. -Unleaded solder melts at a temperature about 40 °C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350 °C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful! -Strong viscosity Unleaded solder is more viscou-s (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc. -Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder. Notes on chip component replacement -Never reuse a disconnected chip component. -Notice that the minus side of a tantalum capacitor may be damaged by heat. Flexible Circuit Board Repairing -Keep the temperature of the soldering iron around 270 °C during repairing. -Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). -Be careful not to apply force on the conductor when soldering or unsoldering. Laser component in this product is capable of emitting radiation exceeding the limit for Class 1. This appliance is classified as a CLASS 1 LASER product. This marking is located on the bottom exterior. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. SAFETY-RELATED COMPONENT 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 FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY. SAFETY CHECK-OUT After correcting the original service problem, perform the following safety check before releasing the set to the customer: Check the antenna terminals, metal trim, metallized knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE TEST The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes.). Leakage current can be measured by any one of three methods. 1.A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers instructions to use these instruments. 2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The limit indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suitable. (See Fig. A) 1.5 k Ω 0.15 µF AC voltmete r (0.75 V) To Exposed Metal Parts on Set Earth Ground Fig. A. Using an AC voltmeter to check AC leakage.