Clearing Cmos; Disabling Or Clearing The Power-On And Setup Passwords; Pci Extender Card Connectors; System Hardware Interrupts - HP Compaq dc7600 MT Supplementary Manual

System Board Connectors and Jumpers (position of some untitled components may vary in location)
CMOS CMOS button
CR1 5V_AUX LED
E14 Boot block
E49 Password jumper
J20 PCI slot 1
J21 PCI slot 2
J30 PCI slot extender
J31 PCI Express slot x1
J41 PCI Express slot x16
P1 Main power (24 pin)
P3 Processor 12V header
P5 Front panel
P6 Internal chassis speaker
P8 Chassis fan
P9 Secondary chassis fan
P10 Diskette drive
P11 Aux audio in

PCI Extender Card Connectors

J23 PCI slot 4
J24 PCI slot 5

System Hardware Interrupts

IRQ System Function
0 Timer Interrupt
1 Keyboard
2 Interrupt Controller Cascade
3 Serial Port (COM B)
4 Serial Port (COM A)
5 Unused, available for PCI
6 Diskette Drive
7 Parallel Port (LPT 1)
Computer Diagnostic LEDs (on front of computer)
LED Color LED/Beep Activity
Power Green On
Power Green 1 blink every 2 seconds
Power Green 1 blink every 2 seconds
Power Clear Off
Power Clear Off
Power Red* 2 blinks 1 second apart
Power Red* 3 blinks 1 second apart
Power Red* 4 blinks 1 second apart
Power Red* 5 blinks 1 second apart
Power Red* 6 blinks 1 second apart
Power Red* 7 blinks 1 second apart
Power Red* 8 blinks 1 second apart
Power Red* 9 blinks 1 second apart
Power Red* 10 blinks 1 second apart
Hard Drive Green Blinking
*Blinking codes are repeated after a 2 second pause. Beeps stop after fifth iteration but LEDs continue until problem is
resolved.
P20 Primary IDE
P23 Front audio
P24 Front panel USB
P52 Serial port header
P60 Primary Serial ATA (SATA) Port connector
P61 Secondary Serial ATA (SATA) Port connector
P62 Third Serial ATA (SATA) Port connector
P63 Fourth Serial ATA (SATA) Port connector
P70 CPU fan
P124 Hood lock
P125 Hood sensor
XBT2 Battery
XMM1 Memory socket
XMM2 Memory socket
XMM3 Memory socket
XMM4 Memory socket
XU1 Microprocessor socket
P30 Male expansion plug
IRQ System Function
8 Real-Time Clock
9 Unused
10 Unused, available for PCI
11 Unused, available for PCI
12 Mouse
13 Coprocessor
14 Primary ATA (IDE) Controller
State/Message
(S0) Computer on
(S1) Suspend Mode
(S3) Suspend to RAM
(S4) Hibernation Mode
(S5) Computer off
CPU thermal shutdown
CPU not installed
Power supply overload (crow bar)
Defective or missing memory
Defective or missing graphics
System board failure (detected prior to video)
Invalid ROM based on checksum
System not fetching code
System hang while loading an option ROM
Hard drive activity

Clearing CMOS

The computer's configuration (CMOS) may occasionally be corrupted. If it is, it is necessary to clear the CMOS
memory using switch SW50.
To clear and reset the configuration, perform the following procedure:
1. Turn off the computer and any external devices, and disconnect the power cord from the power outlet.
Ä
CAUTION: 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.
3. Press the CMOS button located on the system board.
4. Replace the access panel.
5. Turn the computer on and run Computer Setup (F10 Setup Utility) to reconfigure the system.

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. Allow the operating system to start.
NOTE: 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 Desktop Management Guide and the Computer Setup (F10) Utility Guide for instructions on
establishing new passwords.
Computer Setup (F10) Utility Features (not all features may be available)
System Information
File About
Set Time and date
Device Configuration
Storage
Storage Options
Smart Card Options
Setup Password
Security
Power-On Password
Password Options
OS Power Management
Power
Power-On Options
Advanced Execute Memory Test
BIOS Power On
Note: See the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD.
Flash system ROM Apply Defaults and Exit
Replicated Setup Ignore Changes and Exit
Default Setup Save Changes and Exit
DPS Self-Test
Boot Order
Smart Cover System IDs
Embedded Security Drivelock Security
Device Security OS Security
Network Service Boot Data Execution Prevention
Hardware Power Management Thermal
Onboard Devices Bus Options
PCI Devices Device Options
PCI VGA Configuration