19DVD-2500BTCISERVICE MODEService ModeNote: If some test are performed continuously, any error will occur.1st level 2nd level 3rd level Description1 Mecha test1 Tray Aging Aging of tray open/close2 TOC Read TOC reading3 Heat Run Tray close -> TT1 playback -> TT10playback -> Tray open -> Tray close2 VFD/LED Test 1 All On Turning on all VFD2 All Off Turning off all VFD3 Error Rate Displaying Error rate, Jitterduring playback4 LD Test1 LD Power1 Off Turning off LD2 BD Turning on BD LD3 DVD Turning on DVD LD4 CD Turning on CD LD2 Operating Time Displaying LD Operation Time(with clear function)5 Channel Level1 TEST TONE1Center/Subwoofer/FrontLR2 Surround LR/Surround Back LR2 Front Lch3 Center4 Front Rch5 Surround Rch6 Surround BackRch7 Surround BackLch8 Surround Lch9 Sub woofer6 RS-232C1 Parity Setting 1 Even Setting even parity2 Non Setting non parity2 Version Up Mode Realta Version up with connectingRS-232C7 SD Card Test8 Default Setting Default setting