Technical data
5.27 1509 REPLACE NVM
5.27 1509 REPLACE NVM
Description: This error code is displayed when an error is detected in the
nonvolatile random access memory (NVRAM) that is installed in socket U38 of
the video control board.
Troubleshooting: If the problem is intermittent, the IC might be loose or
partially installed. Perform the following steps:
1. Reseat the NVRAM in socket U38.
2. Replace the video control board.
5.28 1520 CALL SERVICE
Description: This error code is displayed when an error is detected in the
application specific integrated circuit on the video control board.
Troubleshooting: Replace the video control board.
5.29 1521–1523 REPLACE/ADD PDL BD/MEMORY
Description: This error code is displayed when an error is detected in the
PDL option SIM that is installed in the socket U16 on the video control board,
as shown in Figure 5–19.
Troubleshooting: Use the following procedure to fix the error:
1. Remove, inspect, and reseat the PDL option board.
2. Inspect the EEPROMs that are installed in sockets U74, U81, U84, and
U100 on the video control board. Make sure the integrated circuits are
mounted correctly and no pins are bent.
3. Swap the PDL option board.
4. Swap the video control board.
5.30 1526 CALL SERVICE
Description: This error code is displayed when an error is detected in the
communications IC on the video control board.
Troubleshooting: Replace the video control board.
Display Error Code FIPs 5–37