Fault Message:

DCPC SSPC#4-K10 POWER UP FAILED

Fault Code:

2463006DCP

Associated CAS:

ELEC SYS FAIL
(Caution)

When voltage is present on Avionics BATT DIRECT BUS while DC Power Center (DCPC) Solid State Power Controller (SSPC) 4 is off and there is voltage on the SSPC 4 output, the Power-up Built-In Test (PBIT) will fail. This will indicate SSPC 4 or D4 short circuit fault.

• Solid State Power Controller 4 (SSPC)
• DC Power Center (DCPC) Diode (D4)
• Primary Logic Card (PLC) 1
• Primary Logic Card (PLC) 2
• Primary Logic Card (PLC) 3
• DC Power Center (DCPC) (A63)
• Associated Wiring

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

1. Get access to CAIMS active faults. Is message 2460449DCP DCPC DIODE 4 (D4) FAILED displayed?

   1. If YES, troubleshoot this message first.
   2. If NO, continue with next step.

2. Disconnect SSPC4 (K10) connector P403. Remove all three Primary Logic Cards (PLC 1, PLC 2 and PLC 3) from the DCPC. Perform a continuity check of SSPC 4 Coil status, load status and gate status as follows:

   From	To	Result
   P403-3	Ground
   P403-4	Ground
   P403-12	Ground

   1. If there is continuity, go to step 8.
   2. If there is no continuity, continue with next step.
      

3. Perform a continuity check at the PLC connectors in the DCPC as follows:

   From	To	Result
   P403-3	P110A-10
   P403-3	P210A-10
   P403-3	P310A-10
   P403-4	P110B-26
   P403-4	P210B-26
   P403-4	P310B-26
   P403-12	P110B-25
   P403-12	P210B-25
   P403-12	P310B-25

   1. If there is no continuity, go to step 8.
   2. If there is continuity, continue with next step.
      

4. While SSPC4 (K10) connector P403 is still disconnected, set the Battery Master Switch to ON. Perform a 28 VDC voltage check as follows:
   

   From	To	Result
   P403-7	Ground

   1. If 28 VDC is present, go to step 6.
   2. If 28 VDC is not present at pin 7, continue with next step.

5. Perform wiring checks from SSPC 4 (K10) to the Battery Master switch.

   1. If no wiring defects are found, check continuity/function of the battery master switch directly on the electrical control panel. Replace if required.
   2. If wiring defects are found, repair defective wiring as required and do close out.

6. Replace SSPC 4 (K10). Is the fault resolved?

   1. If YES, do close out
   2. If NO, continue with next step.

7. Perform SmartFix Plus task for fault code 2460449DCP.

   1. If system checks are good, do close out.
   2. If fault remains, continue with next step.

8. Replace DCPC.
9. Do close out.