Power Supply - HP Compaq dc7600 Series Disassembly Instructions Manual

HP-00007-01, Appendix 3

POWER SUPPLY

1 Remove the security clip (see Figure 10 below).
NOTE: The security clip is an optional feature and is not installed on all computers.
2 Rotate the drive cage up and disconnect the power cables from all devices.
3 Release the power supply cable from the cable retaining clips on the bottom of the chassis
under the drive cage.
4 If required, disconnect the hood sensor from the system board and remove the sensor
from the power supply by sliding the hood sensor switch mounted on the power supply
toward the outside of the computer and lowering it through the slot (see Figure 11 below).
NOTE: The hood sensor is an optional feature and is not installed on all computers.
5 Rotate the power supply to its full upright position, and then lift the power supply straight
up and out of the chassis (see Figure 12 below).
POWER SUPPLY PRINTED CIRCUIT ASSEMBLY
1 Remove the screws that secure the covers to the power supply
(see Figures 13 & 14 below).
NOTE: Power supply screw quantity and location may vary.
NOTE: You do not need to remove the screws from the fan guard or the power connector.
2 Remove the top cover of the power supply. Note that there may be tabs that secure the
top cover to the power supply chassis. If the tabs are on top, you may need to use a small
flat blade screwdriver to loosen the tabs (see Figure 15 below).
3 Cut the plastic cable clamp that secures the main set of wires to the power supply chassis
(see Figure 16 below).
4 If applicable, remove the power supply side panel.
5 Using diagonal cutters (dikes), cut the blue and brown power connector wires and cut or
unplug the black fan wire (see Figure 17 below).
6 Remove the screws that secure the PCA to the power supply chassis
(see Figure 18 below).
NOTE: Screw quantity and location may vary.
7 Slide the PCA out of the power supply.
8 There are three different power supply PCAs. Refer to Figures 19 to 26 to determine
which PCA you have and the capacitors you must cut from the board.
9 If you have PCA 3 (see Figure 23), using a pry bar or screwdriver, pry the metal shield to
gain access to the large capacitor underneath it (see Figure 25 below).
10 If you have PCA 3, cut the large capacitor from the board (see Figure 26 below).
HP Restricted
22-Aug-2005
Page 3