Philips mcm 285 service manual

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SPEAKERS 1-way Bass Reflex System Impedance ........................................................................ 8Ω Speaker diameter ............................................................. 4 Dimensions (w x h x d)..........14.6x23.6x18.5 (cm) GENERAL AC Power ........................... 110 -“ 127 / 220 -“ 240 V; ....................................................... 50/60 Hz Switchable Dimensions (w x h x d) ....... 14.6x23.6x23.9 (cm) Weight (with/without speakers) .................................. ........................................................................\ ......... 5.9 / 2.5 kg Specifications and external appearance are subject to change without notice. AMPLIFIER Total output power ........................................... 25 W (12.5 W per channel) Signal-to-noise ratio .......................... -‰¥ 62 dBA (IEC) Frequency response ......... 63 -“ 16000 Hz, ± 3 dB CD PLAYER Frequency range .................................. 63 -“ 16000 Hz Signal-to-noise ratio ............................................ 65 dBA TUNER FM wave range ................................... 87.5 -“ 108 MHz MW wave range ................................ 531 -“ 1602 kHz TECHNICAL SPECIFICATION 1 - 2

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1-3 LF Generator e.g. PM5110 Recorder Use Universal Test Cassette CrO2SBC419 4822 397 30069 LEVEL METERe.g. Sennheiser UPM550 with FF-filter S/N and distortion met e e.g. Sound Technology ST170 L R DUT or Universal Test Cassette FeSBC420 4822 397 30071 LEVEL METERe.g. Sennheiser UPM550 with FF -filter S/N and distortion metere.g. Sound Technology ST1700B L R DUT CD Use Audio Signal Disc (replaces test disc 3) SBC429 4822 397 30184 Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT S/N and distortion meter e.g. Sound Technology ST1700B Frame aeriale.g. 7122 707 89001 Tuner AM (MW,LW) To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday´s cage. Use a bandpass filter (or at least a high pass filter with 250Hz) to e\ liminate hum (50Hz, 100Hz). RF Generator e.g. PM5326 Ri=50 : Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT RF Generator e.g. PM5326 S/N and distortion meter e.g. Sound Technology ST1700B Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance f\ rom the pilottone (19kHz, 38kHz). Ri=50 : Tuner FM MEASUREMENT SETUP