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EL-MF877-00                                                                                                Page  1 
Template Revision A 

 

 

  

  

Product End-of-Life Disassembly Instructions

 

Product Category: Personal Computers

 

Marketing Name / Model 
[List multiple models if applicable.] 

Name / Model #1: HP Compaq dx2420 Microtower Business PC 

Name / Model #2  

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, as defined by EU 
directive 2002/96/EC, Waste Electrical and Electronic Equipment (WEEE). 

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 

Quantity 
of items 
included 
in product

 

Printed Circuit Boards (PCB) or Printed Circuit 
Assemblies (PCA) 

With a surface greater than 10 sq cm 
         

3 (1 sys 
board, 2 
P/S PCAs 

Batteries 

All types including standard alkaline and lithium coin 
or button style batteries              

Mercury-containing components 

For example, mercury in lamps, display backlights, 
scanner lamps, switches, batteries             

           

Liquid Crystal Displays (LCD) with a surface greater 
than 100 sq 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 

            

           

Gas Discharge Lamps 

            

           

Plastics containing Brominated Flame Retardants 

            

           

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 

            

           

Summary of Contents for Compaq dx2420

Page 1: ...ted Circuit Boards PCB or Printed Circuit Assemblies PCA With a surface greater than 10 sq cm 3 1 sys board 2 P S PCAs 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 sq cm Includes ba...

Page 2: ... 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 5 Pull back on the clip that holds the battery in place and then remove the battery 4 To remove the system board see Figure 6 a Remove the heatsink from the system board by loosening the four captive screws that secure the heatsink to...

Page 3: ...from the PCA as shown in Figure 10 3 2 Optional Graphic If the disassembly process is complex insert a graphic illustration below to identify the items contained in the product that require selective treatment with descriptions and arrows identifying locations ...

Page 4: ...EL MF877 00 Page 4 Template Revision A FIGURE 1 Removing the access panel FIGURE 2 Removing the front bezel FIGURE 3 Type 1 battery holder ...

Page 5: ...EL MF877 00 Page 5 Template Revision A FIGURE 4 Type 2 battery holder FIGURE 5 Type 3 battery holder FIGURE 6 Removing the system board ...

Page 6: ...EL MF877 00 Page 6 Template Revision A FIGURE 7 Removing the power supply screws FIGURE 8 Removing the power supply from the chassis ...

Page 7: ...EL MF877 00 Page 7 Template Revision A FIGURE 9 POWER SUPPLY Cover screw locations FIGURE 10 POWER SUPPLY Large PCA screw locations capacitors to cut and small PCA to cut ...

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