HP Compaq dc7800 User Manual

Unlocking the Smart Cover Lock
If you have locked the Smart Cover Lock use Computer Setup to unlock the lock. Refer to the Desktop
Management Guide for more information about the Smart Cover Lock.
If you cannot access Computer Setup to unlock the cover you will need to remove the locking solenoid
by using the Smart Cover FailSafe Key (Spare part number 166527-001 for the wrench-style key or
166527-002 for the screwdriver bit key). Once the solenoid has been deactivated or removed the access
panel can be removed.
You need the Smart Cover FailSafe Key in any of the following circumstances:
●
Power outage
●
Startup failure
●
Processor or power supply failure
●
Lost password
To open the computer cover with the Smart Cover Lock engaged:
1. Prepare the computer for disassembly (
Preparation for Disassembly on page 60).
2. Using the Smart Cover FailSafe Key, remove the two tamper-proof screws that secure the Smart
Cover Lock to the chassis.
3. Remove the access panel (Computer Access Panel on page 64).
To reattach the Smart Cover Lock, secure the lock in place with the two tamper-proof screws.
Unlocking the Smart Cover Lock 61

HP Compaq dc7800 Specifications

General

Tcase	73.3 °C
Bus type	FSB
Stepping	M0
Processor cache	2 MB
Processor cores	2
Processor model	E4600
System bus rate	- GT/s
Processor family	Intel® Core™2 Duo
Processor series	Intel Core 2 Duo E4000 Series
Processor socket	LGA 775 (Socket T)
Processor codename	Conroe
Processing Die size	111 mm²
Processor frequency	2.4 GHz
Processor cache type	L2
Processor lithography	65 nm
Processor manufacturer	Intel
Processor front side bus	800 MHz
Processor operating modes	64-bit
ECC supported by processor	No
Thermal Design Power (TDP)	65 W
CPU multiplier (bus/core ratio)	12
Number of Processing Die Transistors	167 M
Internal memory	1 GB
Internal memory type	DDR2-SDRAM
Maximum internal memory	8 GB
Memory layout (slots x size)	2 x 0.5 GB
HDD speed	7200 RPM
HDD interface	SATA
Optical drive type	DVD Super Multi
Total storage capacity	160 GB
Audio input	1
LightScribe	Yes
Networking features	Intel 82566DM Gigabit Network Connection
Graphics card RAMDAC	400 MHz
Storage drive controller	SATA 3, 0 Gb/s NCQ SMART VI
Discrete graphics card model	Intel® GMA 3100
Maximum graphics card memory	0.256 GB
Operating system installed	Windows Vista Business
USB 2.0 ports quantity	8
Chassis type	Mini Tower
Country of origin	China
Cable lock slot type	Kensington
Operating altitude	0 - 3048 m
Non-operating altitude	0 - 9144 m
Storage temperature (T-T)	-30 - 60 °C
Operating temperature (T-T)	10 - 35 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	10 - 90 %
Power supply	365 W
Product type	PC
Processor code	SLA94
Processor ARK ID	32242
Processor package size	37.5 x 37.5 mm

Weight and Dimensions

Depth	452 mm
Width	177 mm
Height	447 mm
Weight	11800 g