Maintenance and Service Guide
Table Of Contents
- Computer features
- Illustrated parts catalog
- Routine care, SATA drive guidelines, and disassembly preparation
- Removal and replacement procedures
- Computer Setup (F10) Utility
- Troubleshooting without diagnostics
- Safety and comfort
- Before you call for technical support
- Helpful hints
- Solving general problems
- Solving power problems
- Solving hard drive problems
- Solving media card reader problems
- Solving display problems
- Solving audio problems
- Solving printer problems
- Solving keyboard and mouse problems
- Solving hardware installation problems
- Solving network problems
- Solving memory problems
- Solving CD-ROM and DVD problems
- Solving USB flash drive problems
- Solving front panel component problems
- Solving Internet access problems
- Solving software problems
- POST error messages
- Password security and resetting CMOS
- Using HP PC Hardware Diagnostics
- Backing up, restoring, and recovering
- Power cord set requirements
- Statement of memory volatility
- Specifications
- Index

System board connectors
Refer to the following illustration and table to identify the system board connectors for your model.
Table 4-1 Identifying system board connectors
Callout Label Component Callout Label Component
(1) PWRCPU 4-pin processor power (14) WIRELESS WLAN module
(2) XU1 Processor (15) SATA PWR0 Drives
(3) CPUFAN Processor fan (16) SD RDR Card reader
(4) DIMM1 Memory module (17) SATA0 Hard drive
(5) DIMM2 Memory module (18) SATA2 Any SATA Device other than
primary hard drive
(6) DIMM3 Memory module (19) SATA1 Any SATA device other than
primary hard drive
(7) DIMM4 Memory module (20) PSWD Clear system passwords
(8) HSENSE Hood sensor (21) BIOS BATTERY RTC battery
(9) SPKR Speaker (22) CMOS Reset CMOS
(10) SSD2 M.2 solid-state drive (23) X16PCIEXP Expansion card
(11) SSD1 M.2 solid-state drive (24) X1PCIEXP1 Expansion card
(12) PWR 6-pin main power (25) COM Option port
(13) PWRCMD Power supply (26) COMA Optional second serial port
System board connectors 27