Philips BJ2.4U Service Manual

Service Modes, Error Codes, and Fault Finding EN 29BJ2.4U/BJ2.5U PA 5.Figure 5-15 “POD Stand-by” to “Semi Stand-by” flowchartaction holder: MIPSautonomous actionaction holder: St-bySemi-Stand-byInitialize MPIFsMPIF should deliver 4 observers:POR= 0; normal operationMSUP = 1: Main supply is presentASUP = 1; audio supply is presentROK = 1; reference frequency is present (coming from AVIP)(AVIPs must be started before the MPIFs in order to have a good clock distribution).AVIP default power-up mode is Stand-by. The Viper instructs AVIP via I2C to enable all thePLLs and clocks and hence enter to Full Power mode.Initialize tuners and HirateAll observers present with correct state? appropriate Observer errorNoYesInitialize video processing ICs- Spider (if available)Initialize source selectionInitialize ColumbusInitialize 3D CombfilterInitialize AutoTVMPPOD stand byinitialize PNX2015 HD subsystemFull SSB power and the display related suppliesbecome availableSwitch “on” all supplies by switching “low”the ON-MODE I/O line.+8V6 error+8V6detected within2000ms after ON-MODEtoggle?NoYesSPactivate +8V6 supplydetection algorithmYesInit SDI PDPYesNoSPSwitch LVDS back “off” if endstate is not the active state.These LVDS items areSDI V3 display only !!Wait 2000ms to allow main supply todeliver full power.F_15400_101.eps230606SDI PDPSet?Log display errorand enterprotection modeSwitch “on” the LVDS outputthe PNX2015 with a correctclock frequency within 4s afterswitching the POD and ON-mode to prevent PDP displaysupply protection.PWR-OK-PDPreceived within 5s afterPOD and ONmodetoggle ?NoPower-up HDMI and 1394 hardware by puttingPOWERDOWN-1394 GPIO 0 line “low”.Enable Viper HW blocks (TM1, TM2, MBS, VMSP1 andVMSP2) which were in powerdown mode.Release PNX2015 resetEnable audio protection algorithm