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. Remove the Top Cover ⇒ Page 4-5.
2. Remove four T10 screws that secure the Left
Cover from underneath.
3. Remove two T20 screws that secure the Left
Cover from the side.
4. Remove one T20 screw that secures the Left
Cover from the top.
Removal and Installation