HP laserjet 3390, 3392 all-in-one Manuale Di Servizio
Laser/scanner
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 following components.
●
Right cover. See
●
Left cover. See
.
●
Rear cover. See
.
●
Top cover. See
.
2.
Disconnect one FFC (callout 1) from the laser/scanner PCA.
3.
Disconnect one connector (callout 2) from the top of the laser/scanner.
4.
Remove all of the wire-harnesses (callout 3) from the retainers.
NOTE
Examine the cable routing as you remove the wire-harnesses.
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Chapter 5 Removal and replacement
ENWW