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Power States; Clearing Cmos; System Board; Using The Setup Utility - HP 303B Illustrated Parts & Service Map

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Standard and Optional Boards
1
System board with VIA Nano U2250 processor
(includes thermal material)
Memory modules
*
4 GB, PC3-10600
2
2 GB, PC3-10600
*
1 GB, PC3-10600
Other boards
ATI Radeon HD4350 (RV710) PCIe x16 graphics card, 512 MB
GeForce G205, PCIe graphics card, 512MB
* Not shown

System Board

System Board Connectors and Jumpers (position of some untitled
components may vary in location)
PCI2
PCI slot
PCI1
PCI slot
PCIE16X1
PCIe x16 slot
PCIE1X1
PCIe x1 slot
AUDIO
External in/out connectors
USB_LAN
Stacked USB connectors/
Network connector
R_USB1
Stacked USB connectors
VGA
Monitor connector
SYS_FAN
Fan connector
COMA
Serial port connector
KB_MS
Keyboard/mouse connectors F_AUDIO
ATX_12V
4-pin CPU power connector
HP 303B, MT
630089-001
585157-001
576110-001
576109-001
637472-001
589146-001
DIMM1
Memory slot
SATA1
Hard drive connector
SATA2
Optical drive connector
ATX
24-pin main power connector
(20-pins used)
CLR_CMOS
Clear CMOS jumper
BATTERY
RTC battery socket
F_PANEL
Front I/O connector
F_USB1
Front I/O connector
F_USB2
Front I/O connector
COMB
Serial port connector
Front audio connector
SPEAKER
Speaker connector
630763-001

Power States

The following table describes how button presses and generated events are handled in each
power state.
Buttons Pressed or
Events Generated
On
Power LED Status
On
Num/Caps/Scroll Lock
--
LEDs (PS/2)
LAN LED (power)
On
LAN LED (activity)
Blinking - active
Off - Otherwise

Clearing CMOS

The header allows you to clear the RTC RAM in CMOS.
To erase the RTC RAM:
1. Turn off the computer and any external devices, and disconnect power.
2. Remove the access panel.
3. Remove the RTC battery.
4. Locate the CMOS jumper header on the motherboard. It is labeled CLR_CMOS.
5. Remove the jumper from pins 1-2 pins and put it on pins 2-3 to clear CMOS. Keep the cap on
pins 2-3 for 5 to 10 seconds.
6. Replace the jumper on pins 1-2.
7. Reinstall the battery.
8. Replace the access panel, external devices, and reconnect the power cord.
9. Turn on the computer.
10.Hold down the F1 key during boot and enter BIOS setup to re-enter data.
Hewlett-Packard Vision Diagnostics
The Hewlett-Packard Vision Diagnostics utility allows you to view information about the hard-
ware configuration of the computer and perform hardware diagnostic tests on the subsystems of
the computer. The utility simplifies the process of effectively identifying, diagnosing, and iso-
lating hardware issues.
Use HP Vision Diagnostics to determine if all the devices installed on the computer are recog-
nized by the system and functioning properly. Running tests is optional but recommended after
installing or connecting a new device.
To access HP Vision Diagnostics, you must create a Recovery Disc Set then boot to the CD con-
taining the utility. It can also be downloaded from http://www.hp.com and either burned to CD
or installed to a USB flash drive.
1. In Windows Explorer, go to C:\SWSetup\ISOs and burn the file Vision Diagnostics.ISO to a
CD or copy it to a USB flash drive.
2. While the computer is on, insert the CD in the optical drive or USB flash drive in a USB port.
3. Shut down the operating system and turn off the computer.
4. Turn on the computer. The system will boot into HP Vision Diagnostics.
NOTE: If the system does not boot to the CD in the optical drive or to the USB flash drive,
you may need to change the boot order in the Computer Setup (F10) utility.
5. At the boot menu, select either the HP Vision Diagnostics utility to test the various hardware
components in the computer or the HP Memory Test utility to test memory only.
NOTE: The HP Memory Test is a comprehensive memory diagnostic utility that is run as a
stand-alone application, outside of HP Vision Diagnostics.
6. If running HP Vision Diagnostics, select the appropriate language and click Continue.
7. In the End User License Agreement page, select Agree if you agree with the terms. The HP
Vision Diagnostics utility launches with the Survey tab displayed.

Using the Setup Utility

The BIOS Setup Utility is accessed by pressing the F10 button during startup. The BIOS Setup
Utility allows you to:
Change factory default settings
Set the system date and time
Set, view, change, or verify the system configuration, including settings for graphics, audio,
storage, communications, and input devices
View processor and memory settings
Modify the boot order of bootable devices, such as hard drives, diskette drives, optical
drives, or USB media
Run tests on the hard drive
Establish a supervisor password that controls access to the Setup Utility
Handling in Each Power State
Hibern
ate
Standby (S1/S3)
(S4)
With DLED in Type 11:
Off
Changes color from On (e.g.
green vs. yellow). Other-
wise: Blinks using the same
color as in On (e.g. steady-
blue vs. blinking-blue).
Off
Off
Off
Off
Off
Off
Shut
down
(S5)
Off
Off
Off
Off
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