Compaq Deskpro EX Manual

System Unit
1 Access Panel Not spared
2 Front bezel 166868-001
3 Chassis assembly (reference only) Not spared
4 Logo kit (1 ea., DT and MT) 166924-001
5Power switch with cable, LED, and switch holder 199854-001
6Feet Plastics Kit
7Power supply 201828-001
7Power supply (PFC) 224062-001
Mass Storage Devices (not illustrated)
Diskette drive, 3.5-inch without bezel 210795-001
48X Max tray load IDE CD-ROM drive 187263-001
32X Max CD-ROM, RW 101916-001
32X Max CD-RW drive 217824-001
10X DVD-ROM drive 215422-001
16X DVD-ROM drive 236922-001
2X DVD-ROM drive 176745-001
10-GB UATA Quiet hard drive (5400) 203139-001
10-GB UATA hard drive (66/7200) 135364-001
10-GB UATA Quiet hard drive (100/5400) 180472-001
15-GB UATA hard drive (66/5400) 202903-001
15-GB UATA hard drive (66/7200) 192060-001
15-GB UATA Quiet hard drive (7200) 180474-001
20.0-GB UATA Quiet hard drive (100/7200) 180476-001
20.0-GB UATA hard drive (5400) 218318-001
20.0-GB UATA hard drive (100/7200) 180475-001
30-GB hard drive (100/7200) 180477-001
30-GB hard drive (100/5400) 236920-001
40-GB hard drive (100/5400) 236921-001
40-GB UATA Quiet hard drive (100/7200) 202904-001
60-GB UATA hard drive (100/7200) 232022-001
LS-120 drive 103421-001
Documentation and Packaging (not illustrated)
Maintenance & Service Guide 215879-001
Service Reference Guide 152611-001
Quick Troubleshooting Guide 153837-001
Illustrated Parts Map 215880-001
Return kit 166990-001
Return kit, International, with carton and buns 166990-002
Miscellaneous Plastics (not illustrated)
Miscellaneous plastics kit, includes: 166878-001
Panel, sub (166835-001)
Bezel, blank (166775-001)
Diskette bezel (166776-001
Card guide (166778-001)
Foot, rubber (4 ea.) (166939-002)
Button, power (166774-001)
Drivelock, DT (166779-001)
Spring, power button (166837-001)
Spring, drivelock (2 ea.) (166837-002)
Drivelock, MT (166780-001)
Retention mechanism (2 ea.) (350767001)
Cables
1Diskette drive cable 161735-001
*CD-Audio cable 149806-001
*Hard drive/CD-ROM cable. 18” long, 10” to first
connector 196667-001
Cable kit, includes: 192264-001
2 40 pin IDE data cable, 12.5” (105876-001)
3 IDE Ultra ATA dual device, hard drive/CD-ROM
cable, 18” (108950-019)
4 IDE Ultra ATA dual device, hard drive/CD-ROM
cable, 18” (108950-021)
5 Audio cable, 21”, (288489-002)
5 Audio cable, Panther 21” (387527-001)
6Power switch with cable, LED, and switch holder 199854-001
*Not shown
Miscellaneous Screws (not illustrated)
Miscellaneous screw kit, includes: 179180-001
6-32 x 1/4 hi-top, thread forming with serrations
(4 ea.) (192308-001)
6-19 x 5/16 panhead, plastite (5 ea.) (101346-068)
6-19 x 5/16 hi-top, plastite with captive washer
(4 ea.) (114399-069)
6-32 x 3/16 hi-top, thread forming with serrations
(5 ea.) (192308-003)
M3 x 5mm, hi-top, plastite with serrations (3 ea.)
(247348-001)
6-32 x 3/16 buttonhead tamper-resistant, taptite with
serrations (4 ea.) (296769-002)
6-32 x 5/16 hi-top, taptite (5 ea.) (109384-568)
6-19 x 1/2 panhead, plastite (4 ea.) (101346-071)
Thumbscrew, molded cap (179333-002)
Standard and Optional Boards
Graphics Controllers
1 NVIDIA M64, 16 MB SDRAM AGP board 182757-001
* NVIDIA M64, 32 MB RAM, AGP 203280-001
* NVIDIA NV-15, 32 MB 180284-001
* Vanta LT 8 MB SDRAM 201827-001
* Vanta 16 MB RAM, AGP 239920-001
* AIMM (GPA) 4 MB, 133 MHz graphics 192012-001
Other boards
2 NIC, 10/100 PCI 116188-001
* Audio board, PCI, ES1373 113897-003
Intel Celeron Processor
3 566/66 MHz with heatsink and clip 203967-001
* 600/66 MHz with heatsink and clip 192011-001
* 633/66 MHz with heatsink and clip 225922-001
* 667/66 MHz with heatsink and clip 237697-001
* 700/66 MHz with heatsink and clip 230433-001
* 733/66 MHz with heatsink and clip 239698-001
* 800/100 MHz with heatsink and clip 231853-001
* 850/100 MHz with heatsink and clip 239115-001
Intel Pentium III Processor
* 667/133 MHz with heatsink and clip 239326-001
* 733/133 MHz with heatsink and clip 229738-001
* 800/133 MHz with heatsink and clip 239325-001
* 866/133 MHz with fansink and clip 192006-001
* 933/133 MHz with fansink and clip 203969-01
* 1GHz/133MHz with heatsink and clip 222727-001
* 1.13 GHz/133MHz with heatsink and clip 239112-001
* 1.20 GHz/133MHz with heatsink and clip 239113-001
Memory Module 133MHz
4 SDIMM, 64 MB 170080-001
* SDIMM, 128 MB 170081-001
* SDIMM, 256MB 192014-001
5 System Board (replaced by 240762-001) 203966-001
5 System Board Tualatin ready (replaces 203966-001) 240762-001
*Not shown
Miscellaneous Parts
1 Battery 153099-001
* Active fansink ( 866, 933 MHz, 1 GHz) 228026-001
* Active fansink (1.13 GHz and faster) 239119-001
2 Drive bay adapter, 3.5 to 5.25” 228192-001
3 Fan assembly 230435-001
4 Mouse, 2-button 166861-001
* Mouse, scroll, Opal 334689-002
*Not shown
Keyboards (not illustrated)
Easy Access keyboard 123130-xxx
Spacesaver keyboard 269513-xxx
Dutch -331
Finnish -351
French -051
International -B31
Norwegian -091
Spanish -071
Swedish -101
United Kingdom -031
United States -001
b
© 2001 Compaq Computer Corporation.
Compaq, the Compaq logo, and Deskpro are trademarks of
Compaq Information Technologies Group, L.P.
Intel, Pentium, and Celeron are trademarks of Intel
Corporation in the United States and other countries.
All other product names mentioned herein may be
trademarks of their respective companies.
Compaq shall not be liable for technical or editorial errors
or omissions contained herein. The information in this
document is provided “as is” without warranty of any kind
and is subject to change without notice. The warranties for
Compaq products are set forth in the express limited
warranty statements accompanying such products. Nothing
herein should be construed as constituting an additional
warranty.
September 2001
Part Number 201858-002
Spare Part Number 215880-001
Compaq Deskpro EX and EXS
Illustrated Parts Map
Compaq Deskpro EX and EXS
Series of Personal Computers
Minitower Models

System Board Connectors and Jumpers
CR28 3.3V Aux LED P12 SOS connector
CR29 3.3 V Main LED (NI) P20 Primary IDE connector
E6 Firmware hub top block lock (Installed =
bootblock unprotected. Removed = boot-
block protected.)
P21 Secondary IDE connector
E29 SCSI LED cable connetor P70 CPU fan connector
E49 Password jumper (Installed = Enabled,
Removed = Cleared) P100 ITP connector
J20-22 PCI slots P216 chassis fan connector
J40 AGP/AIMM connector P701 CD-ROM audio
P1 Power supply connector SW50 Clear CMOS button
P5 Power button, front panel LED connector XBT1 Battery
P10 Diskette drive connector XMM1-2 Memory sockets
P11 Aux audio connector XU1 Processor socket
System Hardware Interrupts
IRQ System Function IRQ System Function
0Timer Interrupt 8 Real-Time Clock
1Keyboard 9 Available for PCI
2Interrupt Controller Cascade 10 Available for PCI
3Serial Port (COM B) 11 Available for PCI
4Serial Port (COM A) 12 Mouse
5Audio 13 Coprocessor
6Diskette Drive 14 Primary IDE controller
7Parallel Port (LPT 1) 15 Secondary IDE controller
System Hardware DMA
DMA System Function DMA System Function
0 Unused 4 DMA Controller Cascading
1 Unused 5 Unused
2 Diskette Drive 6 Unused
3 ECP Parallel Port LPT1
(Default; Alternate = DMA 0) 7 Unused
ICH Fixed I/O Registers
Port Register Name
00h, 02h, 04h, 06h Channel 0, 1, 2, 3 DMA base and current address register
C0h, C4h, C8h, CCh Channel 4, 5, 6, 7 DMA base and current address register
01h, 03h, 05h, 07h Channel 0, 1, 2, 3 DMA base and current count register
C2h, C6h, Cah, CEh Channel 4, 5, 6, 7 DMA base and current count register
10h-1Fh Aliased at 00h-0Fh
20h Master PIC ICW1 Init. Cmd Word 1 register, Master PIC OCW2 Init. Cmd Word 2
register, and Master PIC OCW3 Init. Cmd Word 3 register
21h Master PIC OCW1 Init. Cmd Word 1 register, Master PIC ICW2 Init. Cmd Word 2
register, and Master PIC ICW3 Init. Cmd Word 3 register
24h,-25h, 28-29h, 2Ch-2Dh, 30h-
31h, 34h-35h, 38h-39h, 3Ch-3Dh Aliased at 20h-21h
40h Counter 0 interval time status byte format and Counter 0 counter access port regis-
ter
41h Counter 1 interval time status byte format and Counter 1 counter access port regis-
ter
42h Counter 2 interval time status byte format and Counter 2 counter access port regis-
ter
43h Timer control word register, Timer control word register read back. and Counter
latch command
50h-53h Aliased at 40h-43h
61h NMI status and control register
70h NMI enable register and Real-time clock (Standard RAM) index register
71h Real-time clock (Standard RAM) target register
72h Extended RAM index register
73h Extended RAM target register
74h-75h Aliased at 70h-71h
76h-77h Aliased at 72h-73h or 70h-71h
81h, 82h, 83h Channel 2, 3, 1 DMA memory low page register
84h-86h, 88h Reserved page registers
89h, 8Ah, 8Bh Channel 6, 7, 5 DMA memory low page register
8Ch-8Eh Reserved page registers
8Fh Refresh low page register
91h-9Fh (except 92h) Aliased at 81h-8Fh
92h Fast A20 and INIT register
CF9h Reset control register
A0h Slave PIC ICW1 Init. cmd word 1 register, Slave PIC OCW2 Init. cmd word 2 reg-
ister, and Slave PIC 0CW3 Init. cmd word 3 register
A1 Slave PIC ICW2 Init. cmd word 2 register, Slave PIC ICW3 Init. cmd word 3 regis-
ter, Slave PIC ICW4 Init. cmd word 4 register, and Slave PIC OCW1 Init. cmd
word 1 register
ICH Fixed I/O Registers (Continued)
Port Register Name
A4h-A5h, A8h-A8h, ACh-ADh,
B0h-B1h, B4h-B5h, B8h-B9h,
BCh-Bdh
Aliased at A0h-A1h
B2h Advanced power management control port register
B3h Advanced power management status port register
C0h, C4h, C8h, CCh Channel 4, 5, 6, 7 DMA base and current address register
C1h Aliased at C0h
C5h Aliased atC4h
C9h Aliased at C8h
CDh Aliased at CCh
C2h, C6h, CAh, CEh Channel 4, 5, 6, 7 DMA base and current count register
C3h Aliased at C2h
C7h Aliased at C6h
CBh Aliased at CAh
CFh Aliased at Ceh
D0h Channel 4-7 DMA command register and status register
D1h Aliased at D0h
D4h Channel 4-7 DMA write single mask register
D5h Aliased at D4h
D6h Channel 4-7 DMA channel mode register
D7h Aliased at D6h
D8h Channel 4-7 DMA clear byte pointer register
D9h Aliased at D8h
DAh Channel 4-7 DMA master clear register
DBh Aliased at DAh
DCh Channel 4-7 DMA clear mask register
DEh Aliased at DCh
DEh Channel 4-7 DMA write all mask register
DFh Aliased at DEh
F0h Coprocessor error register
170h-177h PIO mode command block offset for secondary drive
1F0h-1F7h PIO mode command block offset for primary drive
376h PIO mode control block offset for secondary drive
3F6h PIO mode control block offset for primary drive
4D0h Master PIC edge/level triggered register
3F6h PIO mode control block offset for primary drive
4D1h Slave PIC edge/level triggered register
400-47F Super I/O
F800-F87F Reserved (power management)
FA00-FA3F Reserved (GPIO management)
FC00-FC0F Reserved (SMBUS controller)
NOTE: When the POS_DEC_EN bit is set, additional I/O ports get positively decoded by the ICH.
System Memory Map
Size Memory Address System Function
512 KB FFFFFFFFh to FFF80000h System ROM
3839 MB FFFBFFFFh to 10000000h PCI memory expansion
511 MB 0FFFFFFFh to 00100000h Host or PCI memory expansion
128 KB 000FFFFFh to 000E0000h System ROM
96 KB 000DFFFFh to 000C8000h PCI option ROMs
32 KB 000C7FFFh to 000C0000h Video ROM
128 KB 000BFFFFh to 000A0000h Video RAM
640 KB 0009FFFFh to 00000000h Base memory
Clearing CMOS*
The computer's configuration (CMOS) may occasionally be corrupted. If it does, it is necessary to clear the CMOS
memory using jumper SW50
To clear and reset the configuration, perform the following procedure:
1. Prepare the computer for disassembly.
ÄCAUTION: The power cord must be disconnected from the power source before pushing the Clear CMOS
Button (NOTE: All LEDs on the board should be OFF). Failure to do so may damage the system board
2. Remove the access panel (Section 4.6).
3. Press the CMOS button located on the system board and keep it depressed for 5 seconds.
4. Replace the access panel.
5. Turn the computer on.
6. Run F10 Computer Setup (delete-utility) to reconfigure the system.
*When the CMOS button is pushed or the jumper is removed, both the power-on password and the setup password
become invalid because both are stored in the configuration memory. You will need to reset the passwords.
Disabling or Clearing the Power-On and Setup Passwords*
1. Turn off the computer and any external devices, and disconnect the power cord from the power outlet.
2. Remove the access panel.
3. Locate the header and jumper labeled E49.
4. Remove the jumper from pins 1 and 2. Place the jumper over pin 2 only, in order to avoid losing it.
5. Replace the access panel.
6. Plug in the computer and turn on power to all equipment. Allow the operating system to start. (Placing the jumper
on pin 2 clears the current passwords and disables the password features.)
7. To re-enable the password features, repeat steps 1-3, then replace the jumper on pins 1 and 2.
8. Repeat steps 5-6, then establish new passwords.
Refer to the Computer Setup (F10 Setup) instructions to establish new passwords.
*When the CMOS button is pushed or the jumper is removed, both the power-on password and the setup password
become invalid because both are stored in the configuration memory. You will need to reset the passwords