Philips ced 228 ced 228 x service manual

Page 1

Tuner Frequency range - FM87.5 - 108.0 M H z search and 50kHz per Frequency range 522 - 1620 K Hz Usable sensitivity - FM 8 uV Usable s ensitivity 50 uV LCD Screen size Di splay resol u tion 320 x 234 do ts Contr ast rati o 350 Bri gh tness 220 cd/m 2 General Power s upply negative ground Fuse 15 A Suitable speaker impedance 4 - 8 M aximum power o utput50 W x 4 channels Continuou s power output 24 W x 4 channels Pre-A mp o utput voltage 1 kH z ,0 dB ,10 k Subw oofer o utput voltage A ux-in level 500 m V 188 x 58 x 193 m m W e i g ht 1.7 kg System D V D / C D audio / M P3 system Frequency respo nse 20 Hz - 20kHz Singal/noise ra tio> 75dB To tal harmonic distortion Less than 1% Channel separation > 55dB Video signal format N T SC /PA L/A U TO Video output 1 + /- 0.2V TECHNICAL SPECIFICATION 1 - 2 Type /Versions: Features Board in used: CED228 Service policy SK BOARD MAIN BOARD * TIPS : C -- Component Lever Repair. M -- Module Lever Repair -ˆš-- Used 78/ Feature diffrence RDS & DAB VOLTAGE SELECTOR ECO STANDBY - DARK -ˆš Type /Versions: /58 89/ 78/ VERSION VARIATION 89/ C/M C/M -ˆš MOTO BOARDPANEL BOARD C/M C/M C/M CED228 -ˆš M M -ˆš M M M C/M C/MC/M C/M C/M -ˆš /58 SD BOARD -ˆš Disc player

Page 2

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