HP 3390 Service Manual - Page 161
Formatter, CAUTION,
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Formatter 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 left cover. See Left cover on page 116. 2. Disconnect five connectors (callout 1; P2, J2, P14, P13, P15) and five FFCs (callout 2; J4, J1, J10, J11, J7). CAUTION The connector at PCA location P13 is very fragile and can be easily damaged. Be very careful when disconnecting this connector. 2 1 1 2 Figure 5-39 Remove the formatter (1 of 3) ENWW Internal assemblies 139