Document is original service document of sharp. I had a problem with the door contacts. Fuses where blown. With the manual in a few minuts is was clear what the problem was.
Manual was of great help.
With kind regards,
Text excerpt from page 1 (click to view)
COMPACT DISC PLAYER
Tracking system: Laser pickup: DIA conversion: Frequency responee: output: Maximum output: Power supply: 1-beam laser Semiconductor laser 8-times oversampling digital filter+ 1-bit DAC 20 â 20000Hz PHONES/LINE OUT jack (stereo mini-jack) 12mW+12mW (160hmsatl kHz) 500 mV (47 k ohms at 1 kHz) DC 3V using two size AA (LR6) alkaline batteries AC house current using commercially available rechargeable batteries 139x 37.7 x163mm (5â/, x 1â/, x 6 â/, in.) 400 g 140Z (excluding batteries)