HP Workstation xw3100 HP Workstation xw3100 - Service and Technical Reference - Page 56
Service Considerations, 4.4.1 Power Supply Fan, 4.4.2 Tools and Software Requirements
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Identifying the Chassis, Routine Care, and Disassembly Preparation 4.4 Service Considerations Listed below are some of the considerations that you should keep in mind during the disassembly and assembly of the workstation. 4.4.1 Power Supply Fan The power supply fan is a variable-speed fan based on the temperature in the power supply. Ä CAUTION: The cooling fan is off only when the workstation is turned off or the power cable has been disconnected. The cooling fan is always on when the workstation is either in the "On," "Standby," or "Suspend" modes. You must disconnect the power cord from the power source before opening the workstation to prevent system board or component damage. 4.4.2 Tools and Software Requirements To service the workstation, you need the following: ■ Torx T-15 screwdriver (Compaq screwdriver with bits, PN 161946-001) ■ Torx T-15 screwdriver with small diameter shank (for certain front bezel removal) ■ Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver) ■ Diagnostics software ■ Compaq tamper-resistant T-15 wrench (Smart Cover FailSafe Key, PN 166527-001) or Compaq tamper-resistant bits (Smart Cover FailSafe Key, PN 166527-002) 4.4.3 Screws The screws used in the workstation are not interchangeable. They may have standard or metric threads and may be of different lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. HP strongly recommends that all screws removed during disassembly be kept with the part that was removed, then returned to their proper locations. ✎ Metric screws have a black finish. U.S. screws have a silver finish. ✎ As each subassembly is removed from the workstation, it should be placed away from the work area to prevent damage. 4-6 338611-001 Service and Technical Reference Guide, xw3100