1 - 48Chapter 1 TroubleshootingFIP1.19 LCD/LED Display ErrorStep Check Yes NoPossible causative parts:OPERATION PANEL (PL1.1.1)HARNESS ASSY PANEL (PL1.1.10)HVPS/MCU (PL12.1.19)LVPS (PL12.1.5)1Checking 3.3VDC power lineIs the voltage across the harness of OPERATION PANEL,3.3 VDC?Go to step 2. Go to step 42 Checking OPERATION PANEL for continuity (1)Is every cable of HARNESS ASSY PANEL continuous? Go to step 3.ReplaceHARNESS ASSYPANEL.3Checking OPERATION PANEL (2)Is the display stable, after replacing OPERATION PANEL?(RRP1.4)End of workReplaceHVPS/MCU.(RRP12.10)4Checking the power to OPERATION PANELIs the voltage across P/J28-5 <=> P/J28-4 on HVPS/MCU,3.3VDC?Go to step 5.ReplaceHVPS/MCU.(RRP12.10)5Checking FCC ASSY ESS for continuityDisconnect P/J28 from HVPS/MCU.Are the following continuous normally?P/J28-5 <=> P/J280-22P/J28-4 <=> P/J280-23ReplacePWBA ESS.(PL12.1.13)ReplaceFCC ASSY ESS.(PL12.1.16)
