Dell Inspiron 1720 User Manual

114 Troubleshooting
IF YOU HAVE PROBLEMS WITH AN IEEE 1394 DEVICE NOT PROVIDED BY DELL —
Contact Dell or the IEEE 1394 device manufacturer
(see "Contacting Dell" on
page 179).
Ensure that the IEEE 1394 device is properly inserted into the connector.
Keyboard Problems
CAUTION: Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
Fill out the "Diagnostics Checklist" on page 178 as you perform the various
checks.
NOTE: Use the integrated keyboard when running the Dell Diagnostics or the
system setup program. When you attach an external keyboard, the integrated
keyboard remains fully functional.
External Keyboard problems
NOTE: When you attach an external keyboard, the integrated keyboard remains
fully functional.
C
HECK THE KEYBOARD CABLE — Shut down the computer, disconnect the
keyboard cable and check it for damage, and then firmly reconnect the cable.
If you are using a keyboard extension cable, disconnect it and connect the
keyboard directly to the computer.
CHECK THE EXTERNAL KEYBOARD —
1 Shut down the computer, wait 1 minute, and then turn it on again.
2 Verify that the numbers, capitals, and scroll lock lights on the keyboard
blink during the boot routine.
3 From the Windows desktop, click Start → All Programs →
Accessories → Notepad .
4 Type some characters on the external keyboard and verify that they appear
on the display.
If you cannot verify these steps, you may have a defective external
keyboard.

Dell Inspiron 1720 Specifications

General

Bus type	FSB
Stepping	C0
Tjunction	105 °C
Processor cache	6 MB
Processor cores	2
Processor family	Intel® Core™2 Duo
Processor series	Intel Core 2 Duo T9000 Series
Processor socket	LGA 3647 (Socket P)
Processor codename	Penryn
Processing Die size	107 mm²
Processor frequency	2.5 GHz
Processor cache type	L2
Processor lithography	45 nm
Processor system type	Up
Processor manufacturer	Intel
Processor front side bus	800 MHz
Processor operating modes	64-bit
ECC supported by processor	No
Thermal Design Power (TDP)	35 W
Processor core voltage (AC)	1.062 - 1.150 V
CPU multiplier (bus/core ratio)	12.5
Number of Processing Die Transistors	410 M
HDD speed	5400 RPM
HDD interface	SATA
Card reader integrated	Yes
Display diagonal	17 \
Display resolution	1440 x 900 pixels
Native aspect ratio	16:10
Internal memory	4 GB
Memory clock speed	667 MHz
Internal memory type	DDR2-SDRAM
Memory layout (slots x size)	2 x 2 GB
Discrete graphics card model	NVIDIA GeForce Go 8600M GT
Maximum graphics card memory	0.256 GB
Keyboard layout	QWERTY
Pointing device	Touchpad
Type	PC
Modem speed	56.6 Kbit/s
Wireless technology	802.11n
Bluetooth version	2.0+EDR
Bundled software	Microsoft Works 9.0 - Danish
Operating system installed	Windows Vista Home Premium
Number of battery cells	6
TV-out type	S-Video
Charging port type	DC-in jack
Serial ports quantity	0
USB 2.0 ports quantity	5
AC adapter power	90 W
Processor code	SLAYY
Processor ARK ID	33917
Processor package size	35 x 35 mm

Weight and Dimensions

Depth	293 mm
Width	394 mm
Weight	3450 g
Height (rear)	44 mm
Height (front)	39 mm