Dc7900 Cpu - HP Compaq Business Desktop

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Illustrated Parts & Service Map: HP Compaq dc7900 Convertible Minitower Business PC


Page 2
...483951-001 dual-link DVI connector, includes bracket * Quadro NVS295 256-MB PCIe graphics card 519298-001 * HP nVidia Quadro NVS 290 256-MB graphics card, includes bracket 456137-001 * Broadcom NetXtreme Gbit Ethernet Plus NIC ...* E5300, 2.60 GHz, 2-MB L2 cache 516900-001 * Not shown Miscellaneous Parts 1 Fan holder, system fan 2 Fan holder, CPU 3 Chassis fan 4 Fan, heatsink * Heatsink with alcohol pad and factory-applied thermal grease * Fan duct * Internal speaker * Hood sensor...DH1 417562-111 316904-141 158593-035 dc7900 Illustrated Parts & Service Map, CMT Chassis 506593-002 page 2
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Illustrated Parts & Service Map: HP Compaq dc7900 Convertible Minitower Business PC


Page 3
...Allows you to assign/modify a hard drive password for PCI 12 Mouse 13 Coprocessor 14 Primary ATA (IDE) Controller 15 Secondary ATA (IDE) Controller dc7900 Illustrated Parts & Service Map, CMT Chassis 506593-002 page 3 enable/disable • Monitor Tracking - System Board System Board Connectors and Jumpers (...P62 SATA2 J69 VGA connector P63 SATA3 J78 Double stack audio connector P64 SATA4 P1 Main power connector SW50 Clear CMOS button P3 CPU power connector XBT1 Real-time-clock battery socket P5 Power button/LED connector XMM1 DIMM 1 P6 Internal speaker connector XMM2 DIMM 2...
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Illustrated Parts & Service Map: HP Compaq dc7900 Convertible Minitower Business PC


Page 4
...Red Red Red Red Red Red Red Red Red none On Computer on 1 blink every 2 seconds Normal Suspend Mode 1 blink every second followed CPU thermal shutdown by a 2 second pause 3 blinks, 1 blink every second Processor not installed followed by a 2 second pause 4 blinks, 1... Security Option Prevents use SATA 0, SATA1, and SATA 2. 1801-Microcode Patch Error Processor not supported by HP Insight Diagnostics. Remove DIMMs singularly and reboot to step 3. 2. dc7900 Illustrated Parts & Service Map, CMT Chassis 506593-002 page 4 Click the Diagnostics link. 7. Determine if...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 10
coder/decoder 2. Compaq system management 2. Compaq server management digital-to-analog converter direct current DOS compatibility hole Display Data Channel Double data rate (memory) dual inline memory module Deutche IndustriNorm (connector type) dual inline package direct memory access Desktop management interface dots per inch ...RAM type) electrically erasable PROM enhanced graphics adapter Electronic Industry Association www.hp.com Technical Reference Guide Introduction Acronym or Abbreviation CDS CGA Ch cm CMC CMOS Cntlr Cntrl codec CPQ CPU CRIMM CRT CSM DAC DC DCH DDC DDR DIMM DIN DIP DMA...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 39
... any required responcse packets to be directed to the PCI bus arbiter (a function of a transaction. A bus master is a device that most CPU-to the requesting device, which then asserts FRAME and conducts the address phase of the transaction with PCI 2.3 and earlier versions so that is ...traffic, therefore reducing the need for the Host/PCI bridge to use. If the bus is asserted by the PCI specification. Technical Reference Guide www.hp.com 4-3 The PCI Express bus uses the following layers: ■ Software/driver layer ■ Transaction protocol layer ■ Link layer ■...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 44
...the data manual for other processing tasks. The DMA method reduces the amount of data to or from an ISA I /O Controller Hub. 4-8 www.hp.com Technical Reference Guide For detailed information regarding DMA operation, refer to run in 8259 mode. 4.3.2 Direct Memory Access Direct Memory Access (DMA) is... by which a device accesses system memory without involving the microprocessor. Although the DMA method has been traditionally used to transfer blocks of CPU interactions with memory, freeing the CPU for the Intel 82801 ICH10 I /O device, PCI devices may also use DMA operation as well.
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 49
...BIOS ROM Boot failure (after power on) Blinks red 9 times @ 1 Hz [1] 9 Check power supply, processor, sys. Technical Reference Guide www.hp.com 4-13 System Support 4.5.3 System Status These systems provide a visual indication of system boot, ROM flash, and operational status through temperature sensing logic ...6 times @ 1 Hz [1] 6 Check graphics card or system board PCA failure detected by the internal chassis speaker. [3] Check that CPU power connector P3 is the same. Hot processor-ASIC directs Speed Control logic to disk Off - Typical cooling conditions include the following: ...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 50
... This section contains the system I/O map and information on general-purpose functions of the ICH10 and I/O controller. 4.6.1 System I /O) ports. 4-14 www.hp.com Technical Reference Guide System Support The RPM (speed) of all fans is the result of the temperature of the input/output (I /O Map Table 4-9... lists the fixed addresses of the CPU as sensed by speed control circuitry. Units using chassis and CPU fans must have both fans connected to their corresponding headers to run at the slowest (quietest) speed that ...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 52
... to chapter 7 for indicating system events (refer to Table 4-8) ■ Hood lock/unlock controls the lock bar mechanism ■ Thermal shutdown control turns off the CPU when temperature reaches certain level ■ Processor present/speed detection detects if the processor has been removed. These systems use GPIO ports and associate registers... Functions ICH10 Functions The ICH10 provides various functions through GPIO ports: ■ Power/Hard drive LED control for more information regarding power management. 4-16 www.hp.com Technical Reference Guide
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 56
... logic of the I /O component. An Execution phase may involve the transfer of status bytes (from the CPU to the data register (3F5h/375h). The Results phase consists of the CPU reading a series of data to and from the controller to the diskette drive controller. The Execution phase starts... as soon as the Idle phase. 5-4 www.hp.com Technical Reference Guide Data transfers (writes or reads) with ...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 59
...support as determined by the Extended Control register. EPP revisions 1.7 and 1.9 are possible (up to 2 MB/s) due to be accessed by the CPU using DMA or programmed I/O. For the parallel interface to a hardware protocol that provides automatic address and strobe generation. A watchdog timer is used ...can provide data transfers up to detect whether or not the connected peripheral is compatible with a peripheral device. Technical Reference Guide www.hp.com 5-7 In EPP mode, system timing is simply presented on the eight data lines. The ECP mode includes a bi-directional ...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 61
... request an action or indicate status. An odd parity bit is shared by the 8042 and the keyboard depending on the originator of the CPU. After the parity bit is received, the keyboard pulls the data line low and clocks this condition to the keyboard at that the clock... 8042. After the keyboard receives a command from the keyboard for Keyboard Modes 2 and 3. (These modes are discussed in detail in Appendix C). Technical Reference Guide www.hp.com 5-9 Start D0 D1 D2 D3 D4 D5 D6 D7 Parity Stop Bit (LSb) (MSb) Bit 0 1 0 1 1 0 1 1 1 1 0 Data Clock Th Tcy Tcl Tch ...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 80
Table 7-1. Total surge power ( USDT 135-Watt Power Supply Unit Specifications Parameter Input Line Voltage Range Line Frequency Input Current, Maximum load @ 90 VAC Output Voltage Output Current, nominal load Output Current, maximum load Output Current, peak load (300 ms max) [1] 90-265 VAC 47-63 Hz 2.4 A 19.5 VDC 3.5 A 6.9 A 9.0 A NOTES: Total continuous power should not exceed 135 watts. Power and Signal Distribution Table 7-1 lists the specifications of the external supply.
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 81
Current --5.0 A 15.0 A 17.0 A 3.0 A 7.5 A 11.0 A 0.15 A Surge Current ---15.0 A 17.0 A 3.5 A 9.0 A 14.5 A 0.15 A Max. Power and Signal Distribution Table 7-2. Ripple ---50 mV 50 mV 50 mV 120 mV 120 mv 200 mV NOTES: Total continuous power should not exceed 240 watts. Total surge power ( Current Loading [1] ---0.1 A 0.3 A 0.0 A 0.1 A 0.1 A 0.0 A Max. SFF 240-Watt Power Supply Unit Specifications Input Line Voltage Line Frequency Input (AC) Current +3.3 VDC Output +5.08 VDC Output +5.08 AUX Output +12 VDC Output +12 VDC Output (Vcpu) --12 VDC Output Range/ Tolerance 90-264 VAC 47...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 85
... LED provides a visual indication of beeps, with graphics card, check/replace graphics card. Check storage devices, expansion cards and/or system board (CPU power connector P3). On system with 2-second pause between cycles. Blinks red 8 times @ 1 Hz [1] Invalid ROM (checksum error). Press... Normal full-on but fails to RAM (S3) Blinks red 2 times @ 1 Hz [1] Processor thermal shut down. Install or reseat CPU. Technical Reference Guide www.hp.com 7-7 Blinks red 4 times @ 1 Hz [1] Power failure (power supply is used to system board or system board. Beeps stop...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 87
... provides the following power management support: ■ ACPI v2.0 compliant (ACPI modes C1, S1, and S3-S5) ■ APM 1.2 compliant ■ U.S. CPU, memory, and most subsystems shut down or receiving minimum power to disk for recall on power up . These functions are provided by [2] N/A < 2 sec after...and software. System Power States Power State System Condition G0, S0, D0 System fully on , CPU not executing, D2 (Standby/or cache data lost. G1, S1, C1, D1 System on, CPU is executing and data is suspend) holding data, display and I/O subsystems on low power. Some ...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 88
... , headphone/line-out 1/8" jacks DC input Power supply connector Vccp (PWRCPU) header Control panel (power button, power LED) header Internal speaker header CPU fan header Chassis fan, primary, header Diskette drive connector Front panel audio header Front panel USB header Serial port, secondary, header Serial port, primary ... SFF only SFF & CMT only SFF & CMT only CMT only SFF & CMT only SFF & CMT only SFF and CMT only 7-10 www.hp.com Technical Reference Guide Unless otherwise indicated, components are used on all system boards. Designator CR1 E1 E14 E49 / JP49 J9 J10 J20 J21 J22...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 94
... memory detection and configuration with the following table. Check air flow, fan operation, and CPU heat sink. Blinks red 4 times @ 1 Hz None Power failure (power supply is corrected. 8-4 www.hp.com Technical Reference Guide Blinks red 5 times @ 1 Hz 5 beeps Pre-video memory...overloaded). The error conditions are populated. 2. Determine the common CAS latency that are listed in the following steps: 1. Install or reseat CPU. Blinks red 6 times @ 1 Hz 6 beeps Pre-video graphics error. Check/replace system board. Incompatible or incorrectly seated DIMM. Check...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 99
... @ 1 Hz PCA failure. On system with integrated graphics, check/replace system board. NOTE: Audible indications occur only for systems running HP/Compaq BIOS. Check storage devices, expansion cards and/or system board (CPU power connector P3). 5 beeps Blinks red 5 times @ 1 Hz Pre-video memory error. Incompatible or incorrectly seated DIMM. 6 beeps Blinks red...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 100
Network Server Mode Active (w/o System is not connected. Restore default image w/flash utility. 511-CPU Fan Not Detected Processor heat sink fan is not connected. 512-Chassis Fan Not Detected Chassis fan is in the identified socket. 216-Memory Size ... Module BIOS detected installed DIMM(s) as being not compatible. 214-DIMM Configuration Warning A specific error has occurred in a memory device installed in network mode. A-2 www.hp.com Technical Reference Guide

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We have the following 23 documents available for the HP Dc7900:
  • Service Reference Guide: HP Compaq dc7900 Business PC
  • Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers
  • HP ProtectTools User Guide
  • Troubleshooting Guide
  • Hardware Reference Guide - dc7900 Series Convertible Minitower
  • Desktop Management Guide
  • vPro Setup and Configuration for the dc7900p Business PC with Intel vPro Processor Technology
  • Support Telephone Numbers
  • Safety and Regulatory Information Desktops, Thin Clients, and Personal Workstations
  • BIOS Flash Q&A White Paper
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