Dell Precision 3640 Tower Service Manual page 4

Graphics card..................................................................................................................................................................... 37
Removing the graphics card..................................................................................................................................... 37
Installing the graphics card....................................................................................................................................... 38
WLAN module and SMA antenna.................................................................................................................................. 39
Removing WLAN module and SMA antenna.........................................................................................................39
Installing WLAN module and SMA antenna............................................................................................................41
IO panel................................................................................................................................................................................ 42
Removing the IO panel............................................................................................................................................... 42
Installing the IO panel................................................................................................................................................. 43
Power button module.......................................................................................................................................................45
Removing the power button module...................................................................................................................... 45
Installing the power button module........................................................................................................................ 45
Speaker................................................................................................................................................................................ 46
Removing the speaker................................................................................................................................................46
Installing the speaker.................................................................................................................................................. 47
Intrusion switch................................................................................................................................................................. 48
Removing the intrusion switch.................................................................................................................................48
Installing the intrusion switch...................................................................................................................................49
Solid state drive.................................................................................................................................................................50
Removing the solid state drive................................................................................................................................ 50
Installing the solid state drive....................................................................................................................................51
Coin cell battery................................................................................................................................................................ 52
Removing the coin cell battery................................................................................................................................ 52
Installing the coin cell battery.................................................................................................................................. 53
Power supply unit..............................................................................................................................................................54
Removing the power supply unit............................................................................................................................. 54
Installing the power supply unit............................................................................................................................... 55
Front fan..............................................................................................................................................................................57
Removing the front fan..............................................................................................................................................57
Installing the front fan................................................................................................................................................58
Top fan.................................................................................................................................................................................59
Removing the top fan.................................................................................................................................................59
Installing the top fan...................................................................................................................................................60
Heatsink assembly............................................................................................................................................................. 61
Removing the heatsink assembly............................................................................................................................. 61
Installing the heatsink assembly...............................................................................................................................63
Voltage regulator heat sink.............................................................................................................................................65
Removing the voltage regulator heat sink............................................................................................................ 65
Installing the voltage regulator heat sink...............................................................................................................66
Processor............................................................................................................................................................................ 68
Removing the processor............................................................................................................................................68
Installing the processor..............................................................................................................................................69
System board..................................................................................................................................................................... 70
Removing the system board..................................................................................................................................... 70
Installing the system board....................................................................................................................................... 72
System board layout................................................................................................................................................... 75
Chapter 5: Troubleshooting......................................................................................................... 77
Real-Time Clock (RTC Reset)........................................................................................................................................ 77
System diagnostic lights.................................................................................................................................................. 77
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