HP ProDesk 400 G3 MT Business PC HP ProDesk 480 G3 MT Business PC HP ProDesk 490 G3 MT Business PC - Maintenance and Service Guide

Fan
IMPORTANT: System fan only ships with select models. Most models do NOT include a system fan. On
models without a fan, Mylar covers the inside of the fan grill on the rear of the computer.
1. Prepare the computer for disassembly (Preparation for disassembly on page 23).
2. Remove the access panel (Access panel on page 24).
3. From the outside, rear of the chassis, remove the two Phillips screws that secure the fan to the chassis.
4. From the inside of the chassis, disconnect the fan control cable (1) from the system board connector
labeled CHFAN2.
5. Lift the fan out of the chassis (2).
To install the fan, reverse the removal procedure. Be sure to orient the air ow out of the computer.
60 Chapter 4 Removal and replacement procedures: Microtower