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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.] 

HP Compaq dc7900 Small Form Factor 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 
         

2 or 3 (1 
sys board, 
1 or 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 

            

2, 6, or 8 

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 dc7900 Small Form Factor Business

Page 1: ... Boards PCB or Printed Circuit Assemblies PCA With a surface greater than 10 sq cm 2 or 3 1 sys board 1 or 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 bac...

Page 2: ...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 3 Lift the battery out of the holder TYPE 2 BATTERY HOLDER see Figure 4 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...

Page 3: ...ly chassis two screws on back two screws on the top and two screws on the back see Figures 11 12 NOTE You do not need to remove the screws from the fan guard or the power connector c Lift the cover off the power supply The cover you remove is in two pieces and hinges connect the covers to the power supply chassis d Using dikes cut all cables connected to the PCA in the power supply e Remove the fo...

Page 4: ...ocess 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 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 FIGURE 8 POWER SUPPLY 1 Screw locations FIGURE 9 POWER SUPPLY 1 Screw locations ...

Page 7: ...L MF877 00 Page 7 Template Revision A FIGURE 10 POWER SUPPLY 1 PCA screw locations and capacitors 8 and small PCA to cut FIGURE 11 POWER SUPPLY 2 Screw locations FIGURE 12 POWER SUPPLY 2 Screw locations ...

Page 8: ...EL MF877 00 Page 8 Template Revision A FIGURE 13 POWER SUPPLY 2 Power supply PCA screw locations FIGURE 14 POWER SUPPLY 2 Capacitors 6 to cut ...

Page 9: ...EL MF877 00 Page 9 Template Revision A FIGURE 15 POWER SUPPLY 3 Screw locations FIGURE 16 POWER SUPPLY 3 Screw locations FIGURE 17 POWER SUPPLY 3 PCA screw locations ...

Page 10: ...EL MF877 00 Page 10 Template Revision A ...

Page 11: ...EL MF877 00 Page 11 Template Revision A FIGURE 18 POWER SUPPLY 3 Capacitors 2 and small PCA to cut ...

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