HP Compaq Business Desktop dc7100 Series Montageanleitung
HP-00007-01, Appendix 3 18-Aug-2005
HP Restricted
Page 1
Appendix 3 Product End-of-Life Disassembly instructions – rev a
Product Identification:
Marketing Name / Model Description
HP Compaq Business Desktop dc7100 Series - SFF HP business desktop PC – Small Form Factor
chassis
Purpose: The document is intended for use by end-of-life recyclers or treatment facilities. It provides the
basic instructions for the disassembly of HP products to remove components and materials requiring
selective treatment.
1.0 Items Requiring Selective Treatment
1.1 Items listed below are classified as requiring selective treatment.
1.2 Enter the quantity of items contained within the product which require selective treatment in
the right column, as applicable.
Item Description
Notes
Qty items in
product.
Printed Circuit Boards (PCB) or Printed
Circuit Assemblies (PCA)
With a surface greater than 10
square cm
2 (sys bd, power
supply PCA)
Batteries All types including standard
alkaline and lithium coin or button
style batteries
1
Mercury containing components For example, mercury in lamps,
display backlights, scanner lamps,
switches, batteries
Liquid Crystal Displays (LCD) with a
surface greater than 100 square cm
Includes background illuminated
displays with gas discharge lamps
Cathode Ray Tubes (CRT)
Capacitors / condensers (Containing
PCB / PCT)
Electrolytic Capacitors / Condensers
measuring greater than 2.5 cm in
diameter or height
External electrical cables and cords PSU, IDE, SATA cables.
Gas Discharge Lamps
Plastics containing Brominated Flame
Retardants
1 – power
supply fan
Components and parts containing toner
and ink, including liquids, semi-liquids
(gel/paste) and toner
Include the cartridges, print
heads, tubes, vent chambers, and
service stations.
Components and waste containing
asbestos
Components, parts and materials
containing refractory ceramic fibers
Components, parts and materials
containing radioactive substances
HP-00007-01, Appendix 3 18-Aug-2005
HP Restricted
Page 2
2.0 Tools Required
List the type and size of the tools that would typically be used to disassemble the product to a
point where components and materials requiring selective treatment can be removed.
Tool Description Tool Size (if applicable)
Flat blade screwdriver
Phillips screwdriver
Diagonal cutters (dikes)
3.0 Product Disassembly Process
3.1 List the basic steps that should typically be followed to remove components and materials
requiring selective treatment:
SYSTEM BOARD
1 To remove the computer cover (see Figure 1 below):
a) Press the buttons on the left and right sides of the computer.
b) Slide the computer cover toward the front of the computer until it stops, and then lift the
cover up and off the chassis.
2 Remove all expansion cards from the system board.
3 Lift up on the fan shroud to remove it from the chassis (see Figure 2 below).
4 Slide the drive tray forward and disconnect the drive and power cables from the system
board (see Figure 3 below).
5 If applicable, remove the security clip (see Figure 4 below).
NOTE: The security clip is an optional feature and is not installed on all computers.
6 Rotate the power supply to its upright position (see Figure 5 below).
7 Disconnect the serial port from the system board (see Figure 6 below).
8 Disconnect any remaining cables from the system board.
9 Remove the long mounting screw that secures the system board tray to the chassis
(see Figure 7 below).
10 Slide the system board tray assembly towards the front of the chassis, about 1/4 inch, and
then lift the system board up and out of the chassis (see Figure 8 below).
BATTERY
Locate the battery and battery holder on the system board. Depending on the type of battery
holder on the system board, complete the following instructions to remove the battery:
TYPE 1 BATTERY HOLDER (see Figure 9 below)
Lift the battery out of the holder.
HP-00007-01, Appendix 3 18-Aug-2005
HP Restricted
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TYPE 2 BATTERY HOLDER (see Figure 10 below)
To release the battery from its holder, squeeze the metal clamp that extends above one edge of
the battery. When the battery pops up, lift it out.
TYPE 3 BATTERY HOLDER (see Figure 11 below)
Pull back on the clip that holds the battery in place, and then remove the battery.
POWER SUPPLY
1 Remove the security clip (see Figure 4 below).
NOTE: The security clip is an optional feature and is not installed on all computers.
2 Rotate the power supply to its upright position.
3 Pull the drive cage forward and disconnect the power cables from all of the drives.
4 Release the power supply cable from the cable retaining clip at the front of the chassis
below the drive cage and from the clip on the side of the chassis in front of the hard drive.
5 If required, 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 12 below).
NOTE: The hood sensor is an optional feature and is not installed on all computers.
6 Lift the power supply up and out of the chassis (see Figure 13 below).
POWER SUPPLY PRINTED CIRCUIT ASSEMBLY
1 Remove all screws that secure the covers to the power supply chassis. Depending on the
power supply, you must remove either two or three separate pieces
(see Figures 14 & 15 below).
NOTE: Power supply screw quantity and location may vary.
2 Snip the plastic cable clamp that secures the main wires to the power supply chassis
(see Figure 16 below).
3 Lift the top cover off the power supply. Note that there either may be tabs on the back of
the cover that hinge into the power supply chassis, or tabs on the top of the cover that you
must depress to release the cover.
4 Remove the back panel. Note that there may be tabs that hinge into the power supply
chassis.
5 If applicable, remove the side panel.
6 Using a pair of diagonal cutters (dikes), cut the following wires (see Figure 17 below):
•black power connector wire
•thick black fan wire (Note: You can unplug this wire instead of cutting it).
•main collection of wires – to gain access to the capacitors
HP-00007-01, Appendix 3 18-Aug-2005
HP Restricted
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POWER SUPPLY PRINTED CIRCUIT ASSEMBLY cont
7 Remove the screws that secure the printed circuit assembly to the power supply chassis
(see Figure 18 below), and then lift the PCA out of the chassis.
NOTE: Screw quantity and location may vary.
POWER SUPPLY FAN
1 Remove the four screws that secure the fan to the power supply (see Figure 19 below).
2 Lift the fan out of the power supply.
3.2 ILLUSTRATIONS
FIGURE 1: Removing the computer cover
FIGURE 2: Removing the fan shroud
FIGURE 3: Disconnecting the drive and power
cables from the system board
FIGURE 4: Removing the security clip
HP-00007-01, Appendix 3 18-Aug-2005
HP Restricted
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FIGURE 5: Rotating the power supply to its
upright position
FIGURE 6: Disconnecting the serial port from
the system board
FIGURE 7: Removing the mounting screw
from the system board
FIGURE 8: Removing the system board from
the chassis
HP-00007-01, Appendix 3 18-Aug-2005
HP Restricted
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FIGURE 9: Type 1 battery holder
FIGURE 10: Type 2 battery holder
FIGURE 11: Type 3 battery holder
FIGURE 12: Removing the hood sensor
HP-00007-01, Appendix 3 18-Aug-2005
HP Restricted
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FIGURE 13: Removing the power supply
FIGURE 14: Power supply screw locations
(may vary)
FIGURE 15: Power supply screw locations
(may vary)
FIGURE 16: Cut plastic cable clamp
HP-00007-01, Appendix 3 18-Aug-2005
HP Restricted
Page 8
FIGURE 17: Cut wires (may vary)
FIGURE 18 PCA screw locations (may vary)
FIGURE 19: Power supply fan screw locations
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