1 - 53Chapter 1 Troubleshooting4.2 Level 2 FIPFIP2.1 LVPS (PL12.1.5)Step Check Yes NoPossible causative parts:LVPS (PL12.1.5)HVPS/MCU (PL12.1.19)HARNESS ASSY LVPS (PL12.1.1)1Checking LVPS (PL12.1.5) control powerRemove SHIELD PLATE LVPS. (RRP12.1)Disconnect P/J41 from LVPS.Turn the power ON.Check the voltages below are in specified value.P/J41-1 <=> P/J41-2: 3.3 VP/J41-4 <=> P/J41-3: 5 VGo to step 2. Replace LVPS.(RRP12.3)2Checking LVPS driving powerDisconnect P/J42 from LVPS.Turn the power ON.Is the voltage across P/J42-1 <=> P/J42-2, 24 VDC?Go to step 3.Go to FIP2.9INTERLOCK S/W24V,FIP2.11INTERLOCK S/WREAR orFIP2.12 SWITCHI/L ASSY.3Checking HARNESS ASSY LVPS for continuityTurn the power OFF.Disconnect P/J11 from HVPS/MCU.Disconnect P/J41 from LVPS.Is each cable of J11 <=> J41 continuous?Go to step 4.ReplaceHARNESS ASSYLVPS.4Checking AC power sourceIs AC power supply outlet appropriately wired andearthed?ReplaceHVPS/MCU.(RRP12.10)Inform the clientor the electrician.
