Sharp XL-HP515 Service Manual - Page 6

XL-HP515 2) Tracking balance adjustment 3) Gain adjustment (The gain is compensated inside the IC so that the loop gain at the gain crossover frequency will be 0 dB.) * Focus gain adjustment * Tracking gain adjustment 4. CD ERROR CODE DESCRIPTION Error 01 10* 11* 20* 21* 31 Explanation When Pickup set inner position, inner switch cannot detect 'ON' level for 10 secs. CAM error. Can't detect CAM switch when CAM is moving. When it detect cam operation error during initialize process. TRAY error. Can't detect TRAY switch when TRAY is moving. When it detect TRAY operation error during initialize process. When it change to CD function, DSP cannot read initial data. * 'CHECKING' If Error is detected, 'CHECKING' will be displayed instead of 'ERCD**'. 'ER-CD**' display will only be displayed when error had been detected for the 5th times. 2 - 2