HP Compaq dc7600 Series Supplementary Manual page 2

System Board Connectors and Jumpers (position of some untitled components may vary in location)
CR1 5V Aux power
E49 Password jumper
J21 PCI slot
J41 PCI Express x16 slot
P1 Main power (24 pin)
P3 Processor 12V header
P5 Main power switch/LED
P6 Internal chassis speaker
P8 Primary chassis fan
P9 Secondary chassis fan
P11 Aux audio in
P14 Boot block
P21 MultiBay connector
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.
P23 Front audio
P24 USB connector, front panel
P54 Primary serial port
P60 Primary Serial ATA (SATA) connector
P125 Hood sensor
P126 Flying parallel port header
SW50 CMOS button
XBT1 Battery
XMM1 Memory socket
XMM3 Memory socket
XMM4 Memory socket
XU1 Microprocessor socket
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
(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.
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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