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File name SONY ICF-CD843V SERVICE MANUAL VER 1.0 2004.02 (9-877-625-01).pdf

ICF-CD843V SERVICE MANUAL Ver 1.0 2004.02 US Model Model Name Using Similar Mechanism Optical Pick-up Block Name Optical Pick-up Name ICF-CD853V KSM-213RDP KSS-213R SPECIFICATIONS AUDIO POWER SPECIFICATIONS POWER OUTPUT AND TOTAL HARMONIC DISTORTION With 4-ohm loads, both channels driven from 100 - 10 000 Hz; rated 1.0 W per channel-minimum RMS power, with no more than 10% total harmonic distortion in AC operation. General Time display: 12-hour system Speaker: 66 mm (2 5/8 inches) dia., 4 Power outputs: 1.2 W + 1.2 W (at 10% harmonic distortion) Power requirements: 120 V AC, 60 Hz Dimensions: Approx. 185.5 Ч 176 Ч 210.5 mm (w/h/d) (Approx. 7 3/8 Ч 7 Ч 8 3/8 inches) incl. projecting parts and controls Mass: Approx. 1 780 g (3 lb 15 oz) Design and specifications are subject to change without notice. CD player section System: Compact disc digital audio system Laser diode properties: Material: GaAlAs Wavelength: 780 nm Emission duration: Continuous Laser output: Less than 44.6 µW (This output is the value measured at a distance of about 200 mm from the objective lens surface on the optical pick-up block with 7 mm aperture.) +1 Frequency response: 20-20 000 Hz -1.5 dB Wow and flutter: Below measurable limit Radio section Frequency range: TV: 2 - 13 ch WEATHER: 1 - 7 ch FM: 87.5 - 108 MHz AM: 530 - 1 710 kHz TV/WEATHER/FM/AM CD CLOCK RADIO 9-877-625-01 2004B05-1 C 2004.02 Sony Corporation Personal Audio Company Published by Sony Engineering Corporation ICF-CD843V TABLE OF CONTENTS 1. 2. 3. 3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. SERVICING NOTES ... GENERAL ... DISASSEMBLY Disassembly Flow ... Rear Cabinet Assy ... CD Lid ... Upper Cabinet Assy ... MAIN Board ... CD Block ... Optical Pick-up (KSS-213R) ... 3 4 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 Dat