Maintenance & Service Guide K e y b o a r d s - Deskpro EXS (Not shown)
D o c u m e n t a t i o n (Not shown)
Compaq Deskpro Workstation 300
E a s y Access Keyboard-US 123130-xx1
M a i n t e n a n c e and Service Guide 222098-001
Convertible Minitower Models
Asia/Pacific -37x
Q u i c k Troubleshooting Guide 153837-001
and Compaq Deskpro EXS
Australia -B3x
S e r v i c e Reference Guide 225698-001
C a n a d a (French Canadian) -05x
Japanese -29x
J a p a n e s e (English) -39x
U.S. -00x
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.
K e y b o a r d s - Deskpro Workstation 300 (Not shown)
Intel and Pentium are registered trademarks of Intel Corporation. MMX and Celeron
are trademarks of Intel Corporation.
E a s y Access Keyboard-US 123130-xx1
Product names mentioned herein may be trademarks and/or registered trade-
Asia/Pacific -37x
marks of their respective companies.
Europe -A4x
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
French -05x
kind and is subject to change without notice. The warranties for Compaq products
are set forth in the express limited warranty statements accompanying such German -04x
products. Nothing herein should be construed as constituting an additional warranty.
Italian -06x
First Edition. November 2000.
Japanese -29x
J a p a n e s e (English) -39x
Korean -ADx
Part Number: 215249-001
Spanish -07x
S w i s s English/Italian -AHx
S w i s s French/German -B5x
U n i t e d Kingdom -03x
Spare Part Number: 222098-001
U.S. -00x
21
2
1
25
8
7
9
26
3 4
22
27
5 28
23
6
29
24
12
11
10
30
S y s t e m Unit
P o w e r switch with cable, LED and switch holder 2 2 3 4 8 8 - 0 0 1
1 13 14
32
2 P o w e r supply, 265 Watt 203430-001 31
P o w e r supply, 265 Watt with PFC (EMEA only)
* 224884-001
3 A c c e s s panel N o t spared
34
F r o n t bezel
4 221187-001
5 C h a s s i s assembly N o t spared
6 F r o n t bezel Deskpro EXS only 225238-001
33
* N o t shown.
D e s k p r o Workstation 300 only.
M a s s Storage Devices 17 36
16
15
35
D i s k e t t e drive, 3.5-inch
7 158266-001
* D i s k e t t e drive, 3.5-inch (Deskpro EXS only) 123958-001
8 4 8 X CD-ROM drive 187263-001
9 . 1 - G B Hard drive
9 160062-001
1 8 . 2 - G B Hard drive
* 160063-001
19
1 8 . 2 - G B Hard drive
* 194585-001
2 0 - G B Hard drive 18
* 180475-001 M i s c e l l a n e o u s Plastics Kits
2 0 - G B Hard drive
* 157403-001
M i s c e l l a n e o u s Plastics Kit, includes: 166878-001
3 0 - G B Hard drive
* 180477-001 20 21 P a n e l , sub (166835-001)
3 6 - G B Hard drive
* 167926-001
22 B e z e l , blank (166775-001)
3 6 . 4 - G B Hard drive
* 192197-001
23 D i s k e t t e bezel (166776-001)
* 4 0 - G B Hard drive (Deskpro EXS only) 202904-001
24 C a r d guide (166778-001)
Z i p Drive, 250-MB
* 125776-001
25 F o o t , rubber (4 ea.) (166939-002)
S t a n d a r d and Optional Boards
* W r i t e a b l e CDRW Drive, 8/4/32x 101916-001
26 B u t t o n , power (166774-001)
15 N I C , 10/100 PCI, Intel PRO/100+ 116188-001
* D V D - R O M Drive, 10x 215422-001
27 D r i v e l o c k , DT (166779-001)
N I C , 10/100 PCI, Intel PRO/100+, IPSEC
* 215774-001
* N o t shown.
28 S p r i n g , power button (166837-001)
D e s k p r o Workstation 300 only. N I C , 10/100 PCI, 3Com 3C905C-TX, AOL
* 118042-001
29 S p r i n g s , drivelock (2 ea.) (166837-002)
16 N v i d i a TNT2 Pro 16-MB SDRAM AGP Controller 1 7 9 9 9 7 - 0 0 1
Cables 30 D r i v e l o c k , MT (166780-001)
N v i d i a Synergy II, 32-MB AGP Controller
* 146140-001
* R e t e n t i o n mechanism (2 ea.) (350767-001)
10 D i s k e t t e drive cable, 18" 221186-001
E l s a GLoria II, 64-MB Graphics Controller
* 174641-001
M i s c e l l a n e o u s Plastics Kit, includes: 400549-001
C a b l e Kit, includes: 166879-002
M a t r o x G450, AGP Graphics Controller
* 203626-001
* H o l d e r switch (166877-001)
* D i s k e t t e drive cable with twist, 11", with
N v i d i a Synergy III, 32-MB Graphics Card
* 221492-001
p u l l tab, center polarization (143218-001)
24 C a r d guide (166778-001)
U l t r a 3 , PCI/SCSI Adapter Card
* 158364-001
11 4 0 - p o s i t i o n IDE data cable, 12.5" (105876-001)
25 F o o t , rubber (4 ea.) (166939-002)
17 H e a t s i n k with clip 225354-001
12 I D E Ultra ATA dual device, hard drive/CD-ROM
* N o t shown
c a b l e , 18", with pull tab, (108950-015) * P r o c e s s o r , Intel P4, 1.4GHz/400MHz 221184-001
* D u a l - L E D power cable (1 ea.) (387727-001) * P r o c e s s o r , Intel P4, 1.5GHz/400MHz 221185-001
M i s c e l l a n e o u s Parts
* S w i t c h mounting bracket (3 ea.) (166777-001) 18 S y s t e m board 221183-001
* D i s k e t t e drive/tape cable, with twist, M e m o r y Modules (RIMM, 800MHz) 31 A i r baffle 224205-001
n o key, 34" (356107-001)
19 64 MB 157108-001 32 Battery 153099-001
* D i s k e t t e drive cable with twist, 11", without
128 MB 33 M o u s e , scroll, opal 334689-001
* 157112-001
p u l l tab (387795-001)
256 MB M o u s e , 3-button, opal
* 327716-001
* 161454-001
13 I D E Ultra ATA dual device, hard drive/
C D - R O M cable, 14" 170225-001
34 S p e a k e r , 40mm x 70mm 180809-001
20 CRIMM 158265-001
* I D E Ultra ATA , hard drive/CD-ROM cable, 18" 225881-001
35 F a n , 92mm 158275-001
* M o d e m , 56K, Controller-Based, PCI 157071-B21
14 A u d i o cable, 21" 149806-001
36 D r i v e adapter, 3.5-inch 180808-001
* M o d e m , 56K (Deskpro EXS only) 146803-001
* A u d i o CD cable 387527-001
* R e t u r n kit 207742-001
* M o d e m , V.90, International (Deskpro EXS only) 166358-002
* 5 - d e v i c e LVD SCSI cable 158277-001
* N o t shown.
* N o t shown.
D e s k p r o Workstation 300 only. D e s k p r o Workstation 300 only.
* N o t shown.
ICH Fixed I/O Registers
Port R e g i s t e r Name
0 0 h , 02h, 04h, 06h C h a n n e l 0, 1, 2, 3 DMA Base & Current Address Regsiter
C 0 h , C4h, C8h, CCh C h a n n e l 4, 5, 6, 7 DMA Base & Current Address Register
0 1 h , 03h, 05h, 07h C h a n n e l 0, 1, 2, 3 DMA Base & Current Count Register
C 2 h , C6h, Cah, CEh C h a n n e l 4, 5, 6, 7 DMA Base & Current Count Register
10h-1Fh A l i a s e d at 00h-0Fh
20h M a s t e r PIC ICW1 Init. Cmd Word 1 Register
M a s t e r PIC OCW2 Op Ctrl Word 2 Register
M a s t e r PIC OCW3 Op Ctrl Word 3 Register
21h Master PIC ICW2 Init. Cmd Word 1 Register
Master PIC ICW3 Init. Cmd Word 1 Register
Master PIC ICW4 Init. Cmd Word 1 Register
Master PIC OCW1 Op Ctrl Word 3 Register
2 4 h - 2 5 h , 28-29h, A l i a s e d at 20h-21h
2 C h - 2 D h , 30h-31h,
3 4 h - 3 5 h , 38h-39h,
3Ch-3Dh
C o n n e c t o r s and Jumpers 40h C o u n t e r 0 Interval Time Status Byte Format
C o u n t e r 0 Counter Access Port Register
P7 C D - I n Connector
CR500 P / S ON, 5V Aux LED
P8 C h a s s i s Fan Connector 41h C o u n t e r 1 Interval Time Status Byte Format
CR503 P o w e r Button LED
C o u n t e r 1 Counter Access Port Register
P10 D i s k e t t e Drive Connector
CR514 3 . 3 V Aux LED
42h C o u n t e r 2 Interval Time Status Byte Format
P11 S e c o n d Audio Connector
E49 C l e a r Password Header (Installed = C o u n t e r 2 Counter Access Port Register
E n a b l e d , Removed = Cleared) P12 S O S Connector (3Com NIC only)
43h T i m e r Control Word Register
SW50 C l e a r CMOS P20 P r i m a r y IDE Connector T i m e r Control Word Register Read Back
C o u n t e r Latch Command
P1 P o w e r Supply Connector P21 S e c o n d a r y IDE Connector
P3 M i c r o p r o c e s s o r Power-In Connector 50h-53h A l i a s e d at 40h-43h
J20-24 P C I Slots 1-5 (J24=Slot 5)
P5 P o w e r Button / HDD LED / Power-On J74 A G P Slot 61h N M I Status and Control Register
L E D Header
U15 S y s t e m ROM 70h N M I Enable Register
XBT1 B a t t e r y Retainer R e a l - T i m e Clock (Standard RAM) Index Register
XU1 P r i m a r y Processor Socket
XMM3&4 R I M M Slot 3&4, Channel B
71h R e a l - T i m e Clock (Standard RAM) Target Register
XMM1&2 R I M M Slot 1&2, Channel A
72h E x t e n d e d RAM Index Register
73h E x t e n d e d RAM Target Register
S y s t e m Interrupts (IRQ)
74h-75h A l i a s e d at 70h-71h
I R Q S y s t e m Function I R Q S y s t e m Function
76h-77h A l i a s e d at 72h-73h or 70h-71h
0 T i m e r Interrupt 8 R e a l - T i m e Clock
8 0 h , 84h-86h, 88h R e s e r v e d Page Registers
1 Keyboard 9 A v a i l a b l e for PCI
8 1 h , 82h, 83h C h a n n e l 2, 3, 1 DMA Memory Low Page Register
2 I n t e r r u p t Controller Cascade 10 A v a i l a b l e for PCI
8 9 h , 8Ah, 8Bh C h a n n e l 6, 7, 5 DMA Memory Low Page Register
3 S e r i a l Port (COM B) 11 P C I Steering Input
8CH-8Eh R e s e r v e d Page Registers
4 S e r i a l Port (COM A) 12 Mouse
8Fh R e f r e s h Low Page Register
5 A v a i l a b l e for PCI 13 Coprocessor
9 1 h - 9 F h (except 92h) A l i a s e d at 81h-8Fh
6 D i s k e t t e Drive 14 P r i m a r y IDE Controller
92h F a s t A20 and INIT Register
7 P a r a l l e l Port (LPT 1) 15 S e c o n d a r y IDE Controller
A0h S l a v e PIC ICW1 Init. Cmd Word 1 Register
S l a v e PIC OCW2 Op Ctrl Word 2 Register
S l a v e PIC OCW3 Op Ctrl Word 3 Register
A1 Slave PIC ICW2 Init. Cmd Word 2 Register
S y s t e m Memory Map
S y s t e m DMA
Slave PIC ICW3 Init. Cmd Word 3 Register
Slave PIC ICW4 Init. Cmd Word 4 Register
Size M e m o r y Address S y s t e m Function
Hardware
Slave PIC OCW1 Op Ctrl Word 1 Register
DMA S y s t e m Function
5 1 2 KB F F F F F F F F h to FFF80000 S y s t e m ROM
A 4 h - A 5 h , A8h-A8h, A l i a s e d at A0h-A1h
0 Unused
2 0 3 0 MB F E D F F F F F h to 80000000h P C I Memory A C h - A D h , B0h-B1h,
1 Unused Expansion B 4 h - B 5 h , B8h-B9h,
BCh-BDh
2 D i s k e t t e Drive 2 0 4 7 MB 7 F F F F F F F h to 00100000h H O S T or PCI
M e m o r y Expansion B2h A d v a n c e d Power Management Control Port Register
3 E C P Parallel Port
L P T 1 (Default; 128KB 0 0 0 F F F F F h to 000E0000h S y s t e m ROM B3h A d v a n c e d Power Management Status Port Register
A l t e r n a t e = DMA 0)
1 2 8 KB 0 0 0 D F F F F h to 000C0000h P C I Option ROMs C 0 h , C4h, C8h, CCh C h a n n e l 4, 5, 6, 7 DMA Base and Current Address Register
4 D M A Controller
1 2 8 KB 0 0 0 B F F F F h to 000A0000h V i d e o RAM C1h A l i a s e d at C0h
Cascading
6 4 0 KB 0 0 0 9 F F F F h to 00000000h B a s e Memory C5h A l i a s e d at C4h
5 Unused
C9h A l i a s e d at C8h
6 Unused
CDh A l i a s e d at CCh
7 Unused
C 2 h , C6h, CAh, CEh C h a n n e l 4, 5, 6, 7 DMA Base and Current Count Register
C3h A l i a s e d at C2h
C l e a r i n g CMOS C7h A l i a s e d at C6h
T h e computer's configuration (CMOS) may occasionally be corrupted. If it does, it is necessary to clear CBh A l i a s e d at CAh
t h e CMOS memory using push button switch SW50. This will reset CMOS values to factory defaults and
CFh A l i a s e d at Ceh
w i l l erase any customized information including passwords, asset numbers, and special settings.
T o clear and reset the configuration, perform the following procedure: D0h C h a n n e l 4-7 DMA Command Register
C h a n n e l 4-7 DMA Status Register
1 . P r e p a r e the computer for disassembly.
D1h A l i a s e d at D0h
C A U T I O N : T h e power cord must be disconnected from the power source D4h C h a n n e l 4-7 DMA Write Single Mask Register
b e f o r e pushing the Clear CMOS Button (NOTE: All LEDs on the board
A l i a s e d at D4h
D5h
s h o u l d be OFF). Failure to do so may damage the system board.
D6h C h a n n e l 4-7 DMA Channel Mode Register
2. R e m o v e the access panel.
D7h A l i a s e d at D6h
3. P r e s s the CMOS button located on the system board and keep it depressed for 5 seconds.
D8h C h a n n e l 4-7 DMA Clear Byte Pointer Register
4. R e p l a c e the access panel and turn the computer on.
5. R u n F10 Computer Setup to reconfigure the system. D9h A l i a s e d at D8h
DAh C h a n n e l 4-7 DMA Master Clear Register
DBh A l i a s e d at DAh
D i s a b l i n g or Clearing the Power-On and Set-up Passwords
DCh C h a n n e l 4-7 DMA Clear Mask Register
1. T u r n off the computer and any external devices, and disconnect the power cord from the power outlet.
DEh A l i a s e d at DCh
2. R e m o v e the access panel.
DEh C h a n n e l 4-7 DMA Write All Mask Register
3. L o c a t e the header and jumper labeled E49.
4. R e m o v e the jumper from pins 1 and 2. Place the jumper over pin 2 only, in order to avoid losing it. DFh A l i a s e d at DEh
5. P l u g in the computer and turn on power. Allow the operating system to start. This clears the current
F0h C o p r o c e s s o r Error Register
p a s s w o r d s and disables the password features.
6 . R e - e n a b l e the password features by repeating steps 1-3, and then replacing the jumper on pins 1 and 2. 170h-177h P I O Mode Command Block Offset for Secondary
7 . R e p l a c e the access panel.
1F0h-1F7h P I O Mode Command Block Offset for Primary Drive
3 7 6 h P I O Mode Control Block Offset for Secondary Drive
R e f e r to the Computer Setup (F10 Setup) instructions to establish new passwords.
3F6h P I O Mode Control Block Offset for Primary Drive
4D0h M a s t e r PIC Edge/Level Triggered Register
C M O S Archive and Restore (Power Switch Override)
4D1h S l a v e PIC Edge/Level Triggered Register
E a c h time the system starts, the system ROM saves a copy of NVRAM (including CMOS, passwords, and 400-47F S u p e r I/O
o t h e r system variables) in the flash ROM. Should the system become unstable, the last known good copy
CF9h R e s e t Control Register
o f NVRAM can be restored using a feature called "power button override." To restore NVRAM, do the
following:
F800-F87F R e s e r v e d (power management)
1 . W i t h the unit powered down, press and release the power button.
FA00-FA3F R e s e r v e d (GPIO management)
2 . I m m e d i a t e l y after pressing the power button (during POST), press and hold the power button
u n t i l the unit powers down (about 4 seconds). FC00-FC0F R e s e r v e d (SMBUS controller)
A t the next startup, the ROM detects this "power button override" event and the backup copy of NVRAM
NOTE: When the POS_DEC_EN bit is set, additional I/O ports get positively decoded by the ICH.
NOTE:
i s restored.
B e c a u s e of this feature, users cannot power off the computer immediately after powering up. The video
d i s p l a y must be active before the computer can be powered off.
C A U T I O N : U n p l u g g i n g the power cord during POST can corrupt the
s p l a s h screen. Flashing the ROM is required to restore the splash screen.
T h e computer will continue to function even if the splash screen has
b e e n corrupted.
| 101916-001
105876-001
108950-015
116188-001
118042-001
123958-001
125776-001
143218-001
146140-001
146803-001
149806-001
153099-001
153837-001
157071-B21
157108-001
157112-001
157403-001
158265-001
158266-001
158275-001
158277-001
158364-001
160062-001
160063-001
161454-001
166358-002
166774-001
166775-001
166776-001
166777-001
166778-001
166779-001
166780-001
166835-001
166837-001
166837-002
166877-001
166878-001
166879-002
166939-002
167926-001
170225-001
174641-001
180475-001
180477-001
180808-001
180809-001
187263-001
192197-001
194585-001
202904-001
203430-001
203626-001
207742-001
215249-001
215422-001
215774-001
221183-001
221184-001
221185-001
221186-001
221187-001
221492-001
222098-001
224205-001
224884-001
225238-001
225354-001
225698-001
225881-001
327716-001
334689-001
350767-001
356107-001
387527-001
387727-001
387795-001
400549-001
|
