HP laserjet 3390, 3392 all-in-one Manuale Di Servizio
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.
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-in-
one.
one.
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.
connectors. Failure to fully seat an FFC into a connector can cause a short circuit in a PCA.
1.
Remove the left cover. See
2.
Disconnect five connectors (callout 1; P2, J2, P14, P13, P15) and five FFCs (callout 2; J4, J1, J10,
J11, J7).
J11, J7).
CAUTION
The connector at PCA location P13 is very fragile and can be easily damaged.
Be very careful when disconnecting this connector.
1
2
1
2
Figure 5-45
Remove the formatter (1 of 3)
ENWW
Internal assemblies
143