Onkyo CR 305 X Service Manual
This is the 25 pages manual for Onkyo CR 305 X Service Manual.
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Extracted text from Onkyo CR 305 X Service Manual (Ocr-read)
Page 1
9Ù 1 9Ù CR-305X CAUTION ON REPLACEMENT OF OPTICAL PICKUP The laser diode in the optical pickup block is so sensitive to static electricity, surge current and etc., that the components are liable to be broken down or its reliability remarkably deteriorated.During repair,carefully take the following precautions. (The following precautions are included in the service parts.) PRECAUTIONS 1.Ground for the work-desk. Place a conductive sheet such as a sheet of copper (with impedance lower than 10Mohm) on the work- desk and place the set on the conductive sheet so that the chassis can be grounded. 2.Grounding for the test equipments and tools. Test equipments and toolings should be grounded in order that their ground level is the same the ground of the power source.3. Grounding for the human body. Be sure to put on a wrist-strap for grounding whose other end is grounded. Be particularly careful when the workers wear synthetic fiber clothes, or air is dry. 4. Select a soldering iron that permits no leakage and have the tip of the iron well-grounded. 5. Do not check the laser diode terminals with the probe of a circuit tester or oscilloscope. SPECIFICATIONS AMPLIFIERPo wer Output: 2 x 20 watts at 4 ohms 1 kHz DIN 2 x 17 watts at 6 ohms 1 kHz DIN 2 x 15 watts at 8 ohms 1 kHz DIN 2 x 20 watts min, RMS at 4 ohms 1 kHz no more than 1 % THD (FTC rating) 2 x 25 watts at 4 ohms EIAJ Dynamic Power: 2 x 24 watts at 4 ohms 2 x 18 watts at 8 ohms Total Harmonic Distortion: 0.2 % at 10 watts output IM Distortion: 0.2 % at 10 watts output Damping Factor: 25 at 8 ohms Sensitivity and Impedance: TAPE/CDR/MD IN : 150 mV, 50 kohms Frequency Response: 10 to 50,000 Hz : +0 / –3 dB Acoustic Presence: 1 40 Hz +6.0 dB 2 80 Hz +7.5 dB 3 40 Hz +10 dB 80 Hz +8.0 dB 4 40 Hz +10 dB 80 Hz +8.0 dB 10 kHz +4.5 dB Single–to–Noise Ratio: 100 dB (IHF A) Muting –55 dB CD PLAYERSignal Readout System: Optical non–contact Reading Rotation: About 500 – 200 r.p.m. (constant linear velocity) Linear Velocity: 1.2 – 1.4 m / s Error Correction System: Cross Interleave Reed Solomon code D / A Converter: 1 bit Digital Filter: 352.8 kHz 8 times over sampling Number of Channels: 2 (stereo) Frequency Response: 5 Hz – 20 kHz TUNERTuning range FM: 87.9 to 107.9 MHz (200 kHz steps) (U.S. & Canadian models) 87.5 to 108.00 MHz (50 kHz steps) (Other area models)AM: 530 to 1710 kHz (10 kHz steps) (U.S. & Canadian models) 522 to 1611 kHz (9 kHz steps) (Other area models) Usable sensitivity FM: Mono 11.2 dBf, 1.0 µ V (75 ohms IHF) 0.9 µ V (75 ohms DIN) Stereo 17.2 dBf, 2.0 µ V (75 ohms IHF) 23.0 µ V (75 ohms DIN)AM: 30 µ V 50 dB Quieting sensitivity FM: Mono 17.2 dBf, 2.0 µ V (75 ohms) Stereo 37.2 dBf, 20.0 µ V (75 ohms) Capture ratio FM: 2.0 dB Image rejection ratio FM: 40 dB (U.S. & Canadian models) 85 dB (Other area models)AM: 40 dB IF rejection ratio FM: 90 dBAM: 40 dB Signal to noise ratio FM: Mono 73 dB, IHF Stereo 67 dB, IHFAM: 40 dB Selectivity FM: 50 dB DIN (±300 kHz at 40 kHz Devi.) AM Suppression Ratio: 50 dB Harmonic distortion FM: Mono 0.2% Stereo 0.3%AM: 0.7 % Frequency response FM: 30 to 15,000 Hz (±1.5 dB) Stereo separation FM: 35 dB at 1,000 Hz 25 dB at 100 to 10,000 Hz Stereo threshold FM: 17.2 dBf, 2.0 µ V (75 ohms) GENERAL Power Supply:AC 120 V, 60 Hz (U.S. & Canadian models) (Some Asian models) AC 230 V, 50 Hz (European models) AC 220-230 V, 50/60 Hz (Other area models) Power Consumption: 60 W (U.S. & Canadian models) (Some Asian models) 55 W (Other area models) Dimensions: 205 W x 103 H x 362 D mm (8-1/6" x 4-1/16" x 14-1/4") W eight: 4.0 kg (8.8 lbs) Specifications and features are subject to change without notice . Power supply and voltage vary depending on the area in which the unit ispurchased.
Page 2
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs a laser. Therefore, be sure to follow carefully the instructions below when servicing. WARNING!! SERVICE WARNING : DO NOT APPROACH THE LASER EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TO CONFIRM LASER BEAM EMISSION, BE SURE TO OBSERVE FROM A DISTANCE OF MORE THAN 30cm FROM THE SURFACE OF THE OBJECTIVE LENS ON THE OPTICAL PICK-UP BLOCK. Laser Diode Properties Material: GaAS/GaALAs Wavelength: 780nm Emission Duration: continuous Laser output: max. 0.5mW* *This output is the value measured at a distance about 1.8mm from the objective lens surface on the Optical Pick-up Block. LASER WARNING LABEL The label shown below are affixed. 1. Warning label 1. Class 1 label "CLASS 1 LASER PRODUCT" LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT 9Ù 3 9Ù CR-305X