HP Envy 4 Manual

Spare part
numberDescription
691639–001 Display hinge covers
691640–001 TouchPad
691641–001 Fan with foil
692381–001 Display back cover
692758-001 Keyboard in black or silver finish for use in the United States (includes keyboard cable)
692758–031 Keyboard in black or silver finish for use in the United Kingdom and Singapore (includes keyboard
cable)
692758–041 Keyboard in black or silver finish for use in Germany (includes keyboard cable)
692758–051 Keyboard in black or silver finish for use in France...

Spare part
numberDescription
693656–001 System board for use only with computer models equipped with an Intel 1.5GHz processor (includes
processor and replacement thermal material)
693656–501 System board for use only with computer models equipped with an Intel 1.5GHz processor (includes
processor and replacement thermal material)
693656–601 System board for use only with computer models equipped with an Intel 1.5GHz processor (includes
processor and replacement thermal material)
693657–001 System board...

4 Removal and replacement procedures
CAUTION:This computer does not have user-replaceable parts. Only HP authorized service
providers should perform the removal and replacement procedures described here. Accessing the
internal part could damage the computer or void the warranty.
Preliminary replacement requirements
Tools required
You will need the following tools to complete the removal and replacement procedures:
●Flat-bladed screwdriver
●Magnetic screwdriver
●Phillips P0 and P1 screwdrivers
Service...

Drive handling
CAUTION:Drives are fragile components that must be handled with care. To prevent damage to
the computer, damage to a drive, or loss of information, observe these precautions:
Before removing or inserting a hard drive, shut down the computer. If you are unsure whether
the computer is off or in Hibernation, turn the computer on, and then shut it down through the
operating system.
Before handling a drive, be sure that you are discharged of static electricity. While handling a drive,
avoid...

Typical electrostatic voltage levels
 Relative humidity
Event 10% 40% 55%
Walking across carpet 35,000 V 15,000 V 7,500 V
Walking across vinyl floor 12,000 V 5,000 V 3,000 V
Motions of bench worker 6,000 V 800 V 400 V
Removing DIPS from plastic tube 2,000 V 700 V 400 V
Removing DIPS from vinyl tray 11,500 V 4,000 V 2,000 V
Removing DIPS from Styrofoam 14,500 V 5,000 V 3,500 V
Removing bubble pack from PCB 26,500 V 20,000 V 7,000 V
Packing PCBs in foam-lined box 21,000 V 11,000 V 5,000 V
Preliminary...

Packaging and transporting guidelines
Follow these grounding guidelines when packaging and transporting equipment:
●To avoid hand contact, transport products in static-safe tubes, bags, or boxes.
●Protect ESD-sensitive parts and assemblies with conductive or approved containers or
packaging.
●Keep ESD-sensitive parts in their containers until the parts arrive at static-free workstations.
●Place items on a grounded surface before removing items from their containers.
●Always be properly grounded when...

Equipment guidelines
Grounding equipment must include either a wrist strap or a foot strap at a grounded workstation.
●When seated, wear a wrist strap connected to a grounded system. Wrist straps are flexible
straps with a minimum of one megohm ±10% resistance in the ground cords. To provide proper
ground, wear a strap snugly against the skin at all times. On grounded mats with banana-plug
connectors, use alligator clips to connect a wrist strap.
●When standing, use foot straps and a grounded floor mat....

Service label
When ordering parts or requesting information, provide the computer serial number and model
number provided on the service label, which is found on the bottom of the computer.
Item Component Description
(1)Product name This is the product name affixed to the front of
the computer.
(2)Serial number (s/n) This is an alphanumeric identifier that is unique to
each product.
(3)Part number/Product number (p/n) This number provides specific information about the
product’s hardware components. The...

Display panel
DescriptionSpare part number
15.6-in, LED, BrightView SVA display panel 686603–001
Before removing the display panel, follow these steps:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter...

7.Remove the 4 Phillips PM 2x2 display panel screws (2 on the top and 2 on the bottom).
NOTE:Remove any tabs or tape adhering to the display panel.
8.Disconnect the display panel cable (1), and then move the panel towards the keyboard (2).
NOTE:Support the display panel as you lean the panel forward.
32 Chapter 4   Removal and replacement procedures