HP laserjet 3390, 3392 all-in-one サービスマニュアル
Speaker
1.
Remove the left cover. See
2.
Disconnect one FFC (callout 1; J1) from the line interface unit (LIU), remove three screws
(callout 2), and remove the LIU (callout 3).
(callout 2), and remove the LIU (callout 3).
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.
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-in-one.
all-in-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.
seated in their connectors. Failure to fully seat an FFC into a connector can cause a short
circuit in a PCA.
2
1
3
Figure 5-42
Remove the speaker (1 of 2)
3.
Remove one screw (callout 4) and the metal plate (callout 5).
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Chapter 5 Removal and replacement
ENWW