HP ET115AV HP xw4400 Workstation - Service and Technical Reference Guide - Page 74

Hood sensor (Smart cover sensor), Solenoid hood lock (Smart cover lock) (optional),

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NOTE: The bezel blanks are keyed to assist you in replacing the blanks. Also, the subpanel can be rotated 90 degrees to install the optical drives in desktop orientation if desired. Hood sensor (Smart cover sensor) To remove the hood sensor: 1. Disconnect power from the system (Predisassembly procedures on page 57) and remove the side access panel (Side access panel on page 62). 2. Disconnect the hood sensor connector (1) from system board. 3. Slide the hood sensor forward, push it down, and remove it (2) from the chassis. . Figure 4-9 Removing the hood sensor To replace the hood sensor, reverse the previous steps. Solenoid hood lock (Smart cover lock) (optional) To remove the hood lock: 1. Disconnect power from the system (Predisassembly procedures on page 57) and remove the side access panel (Side access panel on page 62). 2. Disconnect the solenoid hood lock cable (1) from the system board. 3. Using the FailSafe key (T-15 wrench), unscrew the two screws (2) from the back of the chassis as shown in the following illustration. To purchase a FailSafe key, contact your authorized HP reseller or service provider or visit the HP website for ordering information. 64 Chapter 4 Removal and replacement procedures ENWW

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NOTE:
The bezel blanks are keyed to assist you in replacing the blanks. Also, the subpanel can be
rotated 90 degrees to install the optical drives in desktop orientation if desired.
Hood sensor (Smart cover sensor)
To remove the hood sensor:
1.
Disconnect power from the system (
Predisassembly procedures
on page
57
) and remove the side
access panel (
Side access panel
on page
62
).
2.
Disconnect the hood sensor connector
(1)
from system board.
3.
Slide the hood sensor forward, push it down, and remove it
(2)
from the chassis. .
Figure 4-9
Removing the hood sensor
To replace the hood sensor, reverse the previous steps.
Solenoid hood lock (Smart cover lock) (optional)
To remove the hood lock:
1.
Disconnect power from the system (
Predisassembly procedures
on page
57
) and remove the side
access panel (
Side access panel
on page
62
).
2.
Disconnect the solenoid hood lock cable
(1)
from the system board.
3.
Using the FailSafe key (T-15 wrench), unscrew the two screws
(2)
from the back of the chassis as
shown in the following illustration.
To purchase a FailSafe key, contact your authorized HP reseller or service provider or visit the HP
website for ordering information.
64
Chapter 4
Removal and replacement procedures
ENWW