54 Software upgradeWhen software upgrading please enter factory menu first, enter ISP of OPTION, set ISP to 1 andyou can begin to upgrade. After upgrade finished, it needs to set ISP back to 0. If the picture can’tdisplay when upgrading, it needs to web J1 of 01S board. Please disconnect J1 again afterupgrading.5 Performance check5.1 TV functionEnter searching menu → auto search, connect RF-TV terminal with central signal source and checkif the picture is normal, if there are channels be skipped. Check TXT and parental control.5.2 AV/S, YpbPr terminalsInput AV/S, YPbPr/YCbCr HD signal, check if it is normal.5.3 VGA terminalInsert VGA terminal, input VGA format signal of 640X480@60 Hz and check if the display is normal.5.4 HDMI terminalInsert HDMI terminal, input signal of 640 X 480@60 Hz signal and check if the display is normal.5.5 check sound channelCheck the speaker and headphone of each channel.5.6 RS232 terminalInsert earphone to COM terminal and check if the long-distance control function is normal.5.7 other function checkCheck the turn on/turn off timer, asleep timer, picture/sound mode, OSD, freeze/mute, stereo, ect.5.8 presetting before ex-factoryItem Setting Item Setting Item SettingPICTURE MODE STANDARD BALANCE 50 OSD LANGUAGE EnglishCOLOR MODE NORMAL VOLUME 50 OSD HPOSITION 50NR WEAK SLEEP TIMER OFF OSD VPOSITION 50ZOOM FULL TTX LANGUAGE WEST OSD HALFTONE 50SOUND MODE STANDARD BLUE SCREEN OFF OSD DURATION 15AVC OFF