Serviceability Features of System
Dual Colour Power LED on Front of Computer (Indicates Normal Operations and Fault Conditions)
Diagnostic LED Explanation Table
Number of 1-second red LED blinks followed by 2-second pause, then repeats:
2-processor thermal protection activated
3-processor not installed
4-power supply failure
5-memory error
6-video error
7-PCA failure (ROM detected failure prior to video)
8-invalid ROM, bootblock recover mode
System/Emergency ROM
Flash ROM
CMOS Battery Holder for easy
Replacement
Flash Recovery with Video
5 Aux Power LED on System PCA
Processor ZIF Socket for easy
Upgrade
Over-Temp Warning on Screen
(Requires IM Agents)
Clear Password Jumper
DIMM Connectors for easy Upgrade
Restore CD
Clear CMOS Switch
NIC LEDs (integrated) (Green & Amber)
Serviceability Features of Chassis
Dual Color Power and HD LED - To
Indicate Normal Operations and Fault
Conditions
Color coordinated cables and
connectors
Tool-less Hood Removal
(thumbscrews for Microtower, spring-
latch for Small Form Factor)
Front power switch
System memory can be upgraded
upgraded on Microtower without
removing any internal components
Tool-less Hard Drive, CD & Diskette
Removal
Feature
Description
ASF 2.0 support (Alert Standard Format)
Industry-standard specification for network alerting and remote control in operating
system-absent environments
Towerable
Product can be oriented as a tower (in addition to desktop orientation)
Drive Self Tests (DPS)
Drive Protection System
A diagnostic hard drive self test. It scans critical physical components and every
sector of the hard drive for physical faults and then reports any faults to the user.
Running independently of the operating system, it can be accessed through a
Windows-based diagnostics utility or through the computer's setup procedure. It
produces an evaluation on whether the hard drive is the source of the problem and
needs to be replaced.
The system expands on the Self-Monitoring, Analysis, and Reporting Technology
(SMART), a continuously running systems diagnostic that alerts the user to certain
types of failures.
DPS Access through F10 Setup during Boot
SMART IV Technology*
(Self-Monitoring, Analysis and Reporting
Technology)
Allows hard drives to monitor their own health and to raise flags if imminent failures were
predicted
Predicts failures before they occur. Tracks fault prediction and failure indication
parameters such as re-allocated sector count, spin retry count, calibration retry
count
By avoiding actual hard drive failures, SMART hard drives act as "insurance" against
unplanned user downtime and potential data loss from hard drive failure
QuickSpecs
HP Compaq dc5850 Business PC
Technical Specifications
DA - 12900 Canada — Version 23 — August 21, 2009
Page 21
