HP ProDesk 400 G7 SFF Maintenance And Service Manual page 4

SATA hard drives ..................................................................................................................................................................... 19
Cable management ............................................................................................................................................................... 20
4 Removal and replacement procedures .............................................................................................................................................. 21
Preparation for disassembly ................................................................................................................................................ 21
Access panel ........................................................................................................................................................................... 21
Optical drive ............................................................................................................................................................................ 22
Front bezel .............................................................................................................................................................................. 23
Hood sensor module ............................................................................................................................................................. 24
Memory modules (DIMMs) .................................................................................................................................................... 25
Expansion card ....................................................................................................................................................................... 28
Drive cage ................................................................................................................................................................................ 29
Hard drive ................................................................................................................................................................................ 30
Speaker .................................................................................................................................................................................... 34
WLAN module ......................................................................................................................................................................... 35
Solid-state drive ..................................................................................................................................................................... 37
Fan shroud ............................................................................................................................................................................... 38
Heat sink .................................................................................................................................................................................. 39
Processor ................................................................................................................................................................................. 40
Power supply .......................................................................................................................................................................... 42
Battery ..................................................................................................................................................................................... 43
System board .......................................................................................................................................................................... 46
5 Troubleshooting without diagnostics ................................................................................................................................................. 49
Before you call for technical support .................................................................................................................................. 49
Helpful hints ............................................................................................................................................................................ 50
Solving general problems ..................................................................................................................................................... 51
Solving power problems ....................................................................................................................................................... 55
iv
Lithium coin cell battery ................................................................................................................................... 19
Cannot access the Computer Setup (F10) Utility when booting the computer ....................................... 51
Computer appears locked up and will not turn off when the power button is pressed ........................ 51
Computer will not respond to keyboard or mouse ...................................................................................... 51
Computer date and time display is incorrect ................................................................................................ 51
There is no sound or sound volume is too low ............................................................................................. 52
Cannot remove computer cover or access panel ......................................................................................... 52
Poor performance ............................................................................................................................................. 52
Computer powered off automatically and the power light blinks red four times and then white
two times ............................................................................................................................................................ 53
System does not turn on and the lights on the front of the computer are not blinking ....................... 53
Power supply shuts down intermittently ...................................................................................................... 55
ENWW