HP 3390 Service Manual - Page 182
ECU, Rear cover. See
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ECU CAUTION PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat is not available, ground yourself by touching the sheet-metal chassis before touching an ESD-sensitive part. Protect the ESD-sensitive parts by placing them in ESD pouches when they are out of the all-inone. CAUTION Do not bend or fold the flat flexible cables (FFCs) during removal or installation. Also, do not straighten pre-folds in the FFCs. You must make sure that all FFCs are fully seated in their connectors. Failure to fully seat an FFC into a connector can cause a short circuit in a PCA. 1. Remove the following components. ● Right cover. See Right cover on page 114. ● Left cover. See Left cover on page 116. ● Rear cover. See Rear cover on page 120. ● Top cover. See Top cover on page 122. ● Formatter. See Formatter on page 139. ● Duplex assembly. See Duplex assembly on page 142. ● Fan. See Fan on page 148. ● Duplex-drive gears. See Duplex-drive gears on page 150. ● Fuser. See Fuser on page 148. ● Interlock assembly. See Interlock assembly on page 159. 160 Chapter 5 Removal and replacement ENWW