compaq armada e500 v300 User Manual

							


	


 The external components on the bottom of the computer are shown in
Figure 1-7 and are described in Table 1-10.
 
 
 	


%

 
						

							
	



 





:		
	
-	
 
	 /	
    2  Battery release latch  Releases the battery from the battery bay.
 
  3  Hard drive cover
release latch  Releases the hard drive cover.
 
  4  Hard drive cover screw  Secures the hard drive cover.
 
  5  Hard drive cover  Covers the hard drive bay.
 
  6  Diskette drive release
latch  Releases the device from the DualBay on
the Armada E500.
  Releases the diskette drive bezel from the
Armada V300.
    7  MultiBay release latch  Releases the MultiBay device.  
						

							


	



(*
+

3
 This section presents a design overview of key parts and features of the
computer. Refer to Chapter 3 for the illustrated parts catalog and
Chapter 5 for removal and replacement procedures.
 The system board provides the following device connections:

 Memory expansion board

 Hard drive

 Display

 Keyboard/TouchPad or pointing stick

 Audio

 Intel Pentium III, II, or Celeron processors

 Fan

 PC Cards

 Modem or modem/NIC
The Armada E500 and Armada V300 computers use an electrical fan for
ventilation. The fan is controlled by a temperature sensor and is designed
to turn on automatically when high temperature conditions exist. These
conditions are affected by high external temperatures, system power
consumption, power management/battery conservation configurations,
battery fast charging, and software applications. Exhaust air is displaced
through the ventilation grill located on the right side of the computer.
;-+.
  
!&!&*5   ?)!$&+ 7!=  
)?60)$8))! ?@ ? !@ ?
)!$&+ 0 
						

							Troubleshooting2-1
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Writer: David Calvert    Saved by: JAbercrombie    Saved date:  07/06/00 3:56 PM
Pages: 38    Words: 6427    Template: c:\msoffice	emplates
ef
ef.dot
Part Number: 128679-004     File name: Ch02
chapter
 
2
TROUBLESHOOTING
Follow these basic steps when beginning the troubleshooting process:
1.  Complete the preliminary steps listed in Section 2.1.
2.  Run the Power-On Self-Test (POST) as described in Section 2.3.
3.  Run Computer Setup as described in Section 2.5.
4.  If you are unable to run POST or if the problem persists after running
POST, perform the recommended actions described in the diagnostic
tables in Section 2.5.
Follow these guidelines when troubleshooting:
Complete the recommended actions in the order in which they are given.

Repeat POST after each recommended action until the problem is
resolved and the error message does not return.

When the problem is resolved, stop performing the troubleshooting
steps and do not complete the remaining recommended actions.

Refer to Chapter 5 for recommended removal and replacement
procedures.

If the problem is intermittent, check the computer several times to
verify that the problem is solved. 
						

							2-2Troubleshooting
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Writer: David Calvert    Saved by: JAbercrombie    Saved date:  07/06/00 3:56 PM
Part Number: 128679-004     File name: Ch02
 The following table describes the troubleshooting actions:
 
 If You Want To:  Then Run:
  Check for POST error
messages  POST
  Perform any of the following:

Check the system
configuration

Set the system power
management parameters

Return the system to its
original configuration

Check system configuration of
installed devicesComputer Setup
2.1  Preliminary Steps
IMPORTANT:  Use AC power when running POST or Computer Setup. A
low battery condition could initiate Hibernation and interrupt the test.
Before running POST, complete the following steps:
1.  Obtain established passwords. If you must clear the passwords, go to
Section 2.2.
2.  Ensure that the battery pack is installed in the computer and the
power cord is connected to the computer and plugged into an AC
power source.
3.  Turn on the computer.
4.  If a power-on password has been established, type the password and
press Enter.
5.  Run Computer Setup (Section 2.5). If a Setup password has been
established, type the password and press Enter.
6.  Turn off the computer and all external devices.
7.  Disconnect external devices that you do not want to test. If you want
to use the printer to log error messages, leave it connected to the
computer. 
						

							Troubleshooting2-3
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Writer: David Calvert    Saved by: JAbercrombie    Saved date:  07/06/00 3:56 PM
Part Number: 128679-004     File name: Ch02
NOTE:  If a problem only occurs when an external device is
connected to the computer, the problem could be with the external
device or its cable. Isolate the problem by running POST with and
without the external device connected.
8.  Use Compaq Utilities and loopback plugs in the serial and parallel
connectors if you plan to test these ports.
Follow these steps to run Compaq Utilities:
a. If you are running Compaq Utilities from the hard drive, turn on
or restart the computer. Press F10 when the cursor appears in the
upper-right corner of the screen. If you do not press F10 in time,
restart the computer and try again.
If you are running Compaq Utilities from diskette, insert the
Compaq Utilities diskette in drive A. Turn on or restart the
computer.
b. Press Enter to accept OK.
c. Select Prompted Diagnostics.
d. After “Identifying System Hardware” completes, select
Interactive Testing and follow the instructions on the screen.
2.2  Clearing Passwords
1.  Turn off the computer.
2.  Disconnect the AC Adapter.
3.  Remove all battery packs.
4.  Remove the switch cover (refer to Chapter 5, Section 5.8).
5.  Disconnect the Real Time Clock (RTC) battery (Section 5.9).
6.  Wait five minutes.
7.  Reconnect the RTC battery.
8.  Replace the switch cover.
9.  Reconnect the AC Adapter. Do not reinstall any battery packs yet.
10.  Turn on the computer.
NOTE:  Remember to set the date and time the next time the computer is
turned on. 
						

							2-4Troubleshooting
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Writer: David Calvert    Saved by: JAbercrombie    Saved date:  07/06/00 3:56 PM
Part Number: 128679-004     File name: Ch02
2.3  Power-On Self-Test (POST)
The Power-On Self-Test (POST) is a series of tests that run every time
the computer is turned on. POST verifies that the system is configured
and functioning properly.
To run POST, complete the following steps:
1.  Complete the preliminary steps (Section 2.1).
2.  Turn on the computer.
If POST does not detect any errors, the computer beeps once or twice to
indicate that POST has run successfully. The computer boots from the
hard drive or from a bootable diskette if one is installed in the diskette
drive.
2.4  POST Error Messages
If the system is not functioning well enough to run POST, or if the
display is not functioning well enough to show POST error messages,
refer to the Troubleshooting tables in Section 2.6.
If POST detects an error, one of the following events occur:

A message with the prefix WARNING appears, informing you
where the error occurred. The system pauses until you press F1 to
continue.

A message with the prefix FATAL appears, informing you where
the error occurred. After the message, the system emits a series of
beeps, then stops.
The system emits a series of beeps, then stops.
Warning messages indicate that a potential problem, such as a system
configuration error, exists. When F1 is pressed, the system should
resume. You should be able to correct problems that produce WARNING
messages. 
						

							Troubleshooting2-5
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Writer: David Calvert    Saved by: JAbercrombie    Saved date:  07/06/00 3:56 PM
Part Number: 128679-004     File name: Ch02
If you receive one of the error messages listed below, follow the
recommended action.
Table 2-1
Warning Messages
Message Description Recommended Action
CMOS checksum
invalid, run SCUCMOS RAM
information has
been corrupted.Run Computer Setup
(Section 2.5) to reinitialize
CMOS-RAM.
CMOS failure, run
SCUCMOS RAM has
lost power.Run Computer Setup
(Section 2.5) to reinitialize
CMOS-RAM.
Diskette controller
errorThe diskette
drive controller
failed to respond
to the recalibrate
command.If there is no diskette drive
in the system, run Computer
Setup (Section 2.5) to
properly configure the
CMOS-RAM to show no
diskette drive present. If the
problem persists, or if a
diskette drive is present,
complete these steps until
the problems are solved:
1.  Check diskette drive
connections.
2.  Replace diskette drive.
3.  Replace system board.
Diskette track 0 failed The diskette
drive cannot read
track 0 of the
diskette in the
drive.Try another diskette. If the
problem persists, you may
need to replace the diskette
drive.
Hard disk controller
errorThe hard drive
controller failed
to respond to the
reset command.Check the drive parameters.
Turn off the system and
check all related
connections.
Keyboard controller
failureThe keyboard
failed the self-
test command.Replace the system board.
Continued  
						

							2-6Troubleshooting
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Writer: David Calvert    Saved by: JAbercrombie    Saved date:  07/06/00 3:56 PM
Part Number: 128679-004     File name: Ch02
Table 2-1  continued
Message Description Recommended Action
Keyboard failure The keyboard
failed to respond
to the RESET ID
command.Replace the keyboard. If the
problem persists, replace
the system board.
No interrupts from
Timer 0The periodic
timer interrupt is
not occurring.Replace the system board.
ROM at xxxx
(LENGTH yyyy) with
nonzero checksum
(zz)An illegal adapter
ROM was
located at the
specified
address.Check the external adapter
(such as a video card) to
determine if it is causing the
conflict.
Time/Date corrupt -
run SCUThe time and
date stored in the
real time clock
(RTC) have been
corrupted,
possibly by a
power loss.1.  Run Computer Setup
(Section 2.5).
2.  If problem persists,
replace RTC battery.
3.  If problems persists,
replace system board.
Hard disk xx failure (or
error)A failure or an
error occurred
when trying to
access the
hard drive.1. Run ScanDisk.
2. Check disk in DOS and
Windows 95. 
						

							Troubleshooting2-7
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Writer: David Calvert    Saved by: JAbercrombie    Saved date:  07/06/00 3:56 PM
Part Number: 128679-004     File name: Ch02
Fatal errors emit a beep and may display a FATAL message. Fatal errors
indicate severe problems, such as a hardware failure. Fatal errors do not
allow the system to resume. Some of the Fatal error beep codes are listed
at the end of this section.
Table 2-2
Fatal Error Messages
Message Description Beep code
CMOS RAM test failed A walking bit test of
CMOS RAM location 0E
(Hex) - 3F (Hex) failed.3
DMA controller faulty A sequential read/write
of the transfer count and
transfer address
registers within the
primary and secondary
DMA controllers failed.4
Faulty DMA page
registersA walking bit read/write
of the 16 DMA controller
page registers starting at
location 80 Hex failed.0
Faulty refresh circuits A continuous read/write
test of port 61h found
that bit 4 (Refresh
Detect) failed to toggle
within an allotted amount
of time.1
Interrupt controller failed A sequential read/write
of various Interrupt
Controller registers
failed.5
ROM checksum
incorrectA checksum of the ROM
BIOS does not match
the byte value at
F000:FFFF.2
RAM error at location
xxxxRAM error occurred
during memory test.None
*Beep codes are defined in Table 2-3.