Dell Precision 3431 Small Form Factor Service Manual

2. Install the:
a) Hard drive and optical drive module
b) Front bezel
c) Side cover
3. Follow the procedure in After working inside your computer.
Power supply unit
Removing power supply unit or PSU
1. Follow the procedure in Before working inside your computer.
2. Remove the:
a) Side cover
b) Front bezel
c) Hard drive and optical drive module
3. To release the PSU:
a) Disconnect the CPU power cable from the connector on the system board [1].
b) Unroute the power cables from the retention clips on the chassis [2,3].
c) Disconnect the PSU power cable from the connector on the system board [4].
Removing and Installing components
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Dell Precision 3431 Small Form Factor Specifications

General

Brand	Dell
Model	Precision 3431 Small Form Factor
Category	Desktop
Language	English