HP LaserJet 4345mfp Series - Troubleshooting Process

Scanner-controller PCA
1 Remove two screws (callout 1), and then remove the scanner-controller PCA cover.
Figure 6-200 Remove the scanner-controller PCA (1 of 2)
2 Disconnect all of the scanner-controller PCA connectors, and then remove five screws
(callout 2). Remove the scanner-controller PCA.
Figure 6-201 Remove the scanner-controller PCA (2 of 2)
274 6 Removal and replacement