Phaser 4500/4510 Service Manual 8-77
FRU Disassembly
10. Remove the socketed NVRAM (P4500: U660; P4510: U520).
11. Remove the configuration card screw and unplug the configuration card.
12. Remove the two 10 mm machine screws that attach the parallel 
connector to the rear panel, and the 6 mm machine screw that attaches 
the USB connector to the rear panel
13. Separate the rear panel from the I/P board.
Replacement Note:
■ The configuration card, memory DIMM(s), flash memory (if present), 
NVRAM, and hard drive (if present) must be transferred to the 
replacement I/P board. Note that the NVRAM notch orients to the top of 
the board.