Switch off the printer, the scanner, and the PC, and then disconnect them from
the power source prior to performing any maintenance.
HP Designjet T1100 MFP, 4500mfp, 4500 Scanner, 820 MFP Service Manual
1. Open Cabinet ⇒ Page 4-79.
2. Remove the CPU Cooling Fan ⇒ Page 4-
3. Pull aside the clip securing the CPU.
4. Remove the CPU.
Removal and Installation