Compaq Deskpro EX
Maintenance & Service Guide
Compaq Deskpro EX Series of Personal Computers
Microtower Models
5
©2000 Compaq Computer Corporation. COMPAQ and the Compaq logo Registered U.S. Patent and Trademark Office.
Microsoft, MS-DOS, Windows and other names of Microsoft products referenced herein are trademarks or registered trademarks of Microsoft Corporation.
Intel and Pentium are registered trademarks of Intel Corporation.
MMX and Celeron are trademarks of Intel Corporation.
Product names mentioned herein may be trademarks and/or registered trademarks of their respective companies.
First Edition. September 2000.
Part Number: 216616-001
Spare Part Number: 216921-001
Documentation (not shown)
Maintenance & Service Guide
Service Reference Guide
Compaq Quick Troubleshooting Guide
216921-001
152611-001
153837-001
Keyboards (not shown)
Keyboard
United States
French Canadian
Japanese (Kanji)
Latin American Spanish
Spanish (LA MERCO)
PRC Chinese
Taiwanese
HK Chinese
216919-xx1
-00x
-12x
-29x
-16x
-C9x
-AAx
-ABx
-ACx
3
13
14 15
16 17
1
2
4
9 10 11 12
System Unit
1
2
3
4
5
Left access panel with 2 screws
Chassis assembly (reference only)
Right access panel with 2 screws
Front bezel
Power supply
Mass Storage Devices
6
7
8
10-GB hard drive with 4 screws
48X CD-ROM drive with 4 screws
Diskette drive with 4 screws
Not spared
Not spared
Not spared
Not spared
216912-001
203139-001
187263-001
222604-001
Cables
9
10
11
12
CD-ROM drive cable/Hard drive cable
Diskette drive cable
Power button and LED cable
CD audio cable
216914-001
216916-001
216917-001
Not spared
Standard and Optional Boards
13
*
14
15
System board 216906-001
Processor, Intel Celeron, 566/66 with heatsink203967-001
Processor, Intel Pentium III, 667/133 with heatsink 192007-001
Memory module, 64MB/133MHz 170080-001
Miscellaneous Parts
16
*
RTC Battery
Mouse
17 Bezel blanks (2)
* Not shown
Miscellaneous Screw Kit (not shown)
Screw Kit, including:
4 US screws for drive retention
4 Metric screws for drive retention
2 access panel screws
153099-001
216920-001
216913-001
216918-001
6
7
8
Connectors and Jumpers
J18
J19
J23
J26
BAT1 External battery
DIMM1-2 Memory slots
J9
J10
CD audio
Aux-in connector
J11
J12
J13-15
J17
Telephony connector
Audio/Modem Riser (AMR) slot
PCI Expansion Slots
CPU fan connector
Wake on Lan (WOL)
Processor socket
ATX power connector
Floppy drive connector
J30
J32
J34
JP1
JP2
JP3*
JP4*
JP5
Secondary IDE connector
Front panel/Misc header
Primary IDE connector
Front panel USB (pins 2&3 jumpered = default shipping configuration)
Back panel USB (pins 2&3 jumpered = default shipping configuration)
FWH lock (boot block)
CPU safe speed
Clear password/CMOS jumper
* JP3 and JP4 settings should never be altered.
Clearing CMOS and Passwords
Passwords may need to be changed, or the computer’s configuration (CMOS) may occasionally be corrupted. Both can be cleared using jumper JP5.
1. Turn off the computer and any external devices, then disconnect the power cord from the power outlet.
2. Remove the access panel on the left side of the computer.
3. Locate the header labeled JP5. Place a jumper across pins 1 & 2 on JP5.
4. Connect the power cord to the power outlet.
5. Turn on the computer.
6. The password reset screen automatically displays. Choose either :
F1 to reset CMOS
F4 to reset passwords
The computer executes the choice and automatically shuts down.
7. Disconnect the power cord from the power outlet.
8. Remove the jumper from JP5 pins 1 & 2 and place it on pins 2 & 3 (safe position).
9. Replace the access panel.
10. Reconnect the power cord to the power outlet and turn the computer on.
If F1 was selected in step 6, the CMOS defaults are reset when the computer starts.
If F4 was selected, all passwords are cleared when the computer starts.
NOTE: Clearing CMOS clears the Power-On Password. It does NOT clear the Supervisor Password.
Setting the Supervisor and Power-On Passwords
A. Setting the Supervisor Password provides access protection for the Computer Setup utility.
1. Turn on the computer, then hold down the DEL key until the Computer Setup utility begins.
2. Select “Change Supervisor Password” and follow screen instructions.
3. The password will be enabled after saving settings and exiting the utility.
B. Setting a Power-On Password.
NOTE: A Supervisor Password must have previously been set. That same password will be used for the Power-On Password.
1. Turn on the computer, then hold down the DEL key until the Computer Setup utility begins.
2. Select Advanced CMOS Setup ➔ Password Check.
3. Select “Always” from the Available Options list.
4. The password will be enabled after saving settings and exiting the utility.
NOTE: Clearing passwords clears both the Supervisor and Power-On Passwords, but does not clear the “Always” option. To reset only the Supervisor Password, change “Always” to “Setup” on the Available Options list.
NOTE: Clearing CMOS clears the Power-On Password. It does NOT clear the Supervisor Password.
System Interrupts (IRQ)
IRQ System Resource IRQ
8
9
10
11
12
13
14
15
System Resource
Real-time clock
User available
User available
User available
Onboard mouse port
(if present, else user available)
Reserved, math coprocessor
Primary IDE
(if present, else user available)
Secondary IDE
(if present, else user available)
System Memory Map
Address Range
1024K–524288K
960K–1024K
896K–960K
800K–896K
640K-800K
639K-640K
Memory Address
100000–1FFFFFFF
F0000-FFFFF
E0000-EFFFF
C8000-DFFFF
A0000-C7FFF
9FC00-9FBFF
512K-639K
0K-512K
80000-9FBFF
00000-7FFFF
Size
511MB
64KB
64KB
96KB
160KB
1KB
127KB
512KB
Description
Extended memory
Runtime BIOS
Reserved
Available high DOS memory (open to PCI bus)
Video memory and BIOS
Extended BIOS data (movable by memory manager software)
Extended conventional memory
Conventional memory
DMA
5
6
7
3
4
1
2
Hardware
DMA
0
Data Width
8- or 16-bits
8- or 16-bits
8- or 16-bits
8- or 16-bits
16-bits
16-bits
16-bits
System Function
Audio
Audio/Parallel port
Diskette drive
Parallel port (for ECP or EPP)/audio
DMA controller
Open
Open
Open
I/O Map
Address (hex)
0000-000F
0020-0021
0040-0043
0060
0061
0064
0071-0071
0072-0073
0080-008F
0092
00A0-00A1
00B2-00B3
00C0-00D0
00F0
0170-0177
01F0-01F7
One of these ranges:
0200-0207
0208-020F
0210-0217
0218-021F
One of these ranges:
0220-022F
0240-024F
0228-022F*
0278-027F*
02E8-02EF*
02F8-02FF*
One of these ranges:
0320-0327
0330-0337
0340-0347
0350-0357
0376
0377, bit 6:0
0378-037F
0388-038B
03B0-03BB
Size
16 bytes
2 bytes
4 bytes
1 byte
1 byte
1 byte
2 bytes
2 bytes
16 bytes
1 byte
2 bytes
2 bytes
32 bytes
1 byte
8 bytes
Description
DMA controller
Programmable Interrupt Control (PIC)
System timer
Keyboard controller byte-reset IRQ
System speaker
Keyboard controller, CMD/STAT byte
System CMOS/Real Time Clock
System CMOS
DMA controller
Fast A20 and PIC
PIC
APM control
DMA
Numeric data processor
Secondary IDE channel
8 bytes
Can very from
1 byte to 8 bytes
Primary IDE channel
Audio/game port
16 bytes
16 bytes
8 bytes
8 bytes
8 bytes
8 bytes
8 bytes
1 byte
7 bits
8 bytes
6 bytes
12 bytes
Audio (SoundBlaster Pro+ compatible)
LPT3
LPT2
COM4/video (8514A)
COM2
MPU-401(MIDI)
Secondary IDE Channel command port
Secondary IDE Channel status port
LPT1
AdLib+(FM synthesizer)
Intel 82810e-DC100 Graphics/Memory Controller Hub (GMCHE)
03C0-03DF
03E8-03EF
03F0-03F5
03F6
03F8-03FF
04D0-04D1
One of these ranges:
0530-0537
0E80-0E87
0F40-0F47
LPTn+400h
0CF8-0CFB**
0CF9***
0CFC-0CFF
FFA0-FFA7
FFA8-FFAF
32 bytes
8 bytes
6 bytes
1 byte
8 bytes
2 bytes
8 bytes
8 bytes
4 bytes
1 byte
4 bytes
8 bytes
8 bytes
Intel 82810e Graphics/Memory Controller Hub (GMCHE)
COM3
Diskette channel 1
Primary IDE channel command port
COM1
Edge/level triggered PIC
Windows Sound System
ECP port, LPTn base address+400h
PCI configuration address register
Turbo and reset control register
PCI configuration data register
Primary bus master IDE registers
Secondary bus master IDE registers
Size and address
96 contiguous bytes starting on a 128-byte divisible boundary
64 contiguous bytes starting on a 64-byte divisible boundary
64 contiguous bytes starting on a 64-byte divisible boundary
32 contiguous bytes starting on a 32-byte divisible boundary
Description
ICH (ACPI+TCO)
Motherboard resource
Onboard audio controller
ICH (USB)
16 contiguous bytes starting on a 16-byte divisible boundary
4096 contiguous bytes starting on a 4096-byte divisible boundary
ICH (SMB)
Intel 82810AA PCI bridge
32 contiguous bytes starting on a 32-byte divisible boundary Intel 82559 LAN controller
* Default, but can be changed to another address range.
** Dword access only
*** Byte access only
NOTE: Some additional I/O addresses are not available due to ICH addresses aliassing.
