HP Envy 4 Manual

							9.Release the support strip (1) that secures the display panel connector. Disconnect the display
panel cable from the display panel (2), and then remove the panel (3).
Reverse this procedure to install the display panel.
Base enclosure
Description Spare part number
Base enclosure (Red) 686092–001
Base enclosure (Black) 690193–001
Before disassembling the computer, 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 from the computer.
4.Remove the display panel (see 
Display panel on page 31).
Component replacement procedures 33 
						

							Remove the base enclosure:
1.Turn the computer face down, remove the 12 Phillips PM 7.5 millimeter long screws.
2.Remove the bottom enclosure.
NOTE:To remove the bottom enclosure, use a thin, non-conductive tool such as the HP Tool
Shroud separator, available on the HP website.
34 Chapter 4   Removal and replacement procedures 
						

							Battery
DescriptionSpare part number
4-cell, 52WHr 3.55AH Li-ion battery 681949-001
Before removing the battery, 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 from the computer.
4.Remove the display panel (see 
Display panel on page 31).
5.Remove the base enclosure (see 
Base enclosure on page 33).
Remove the battery:
1.Turn the computer right-side up, with the front toward you.
2.Disconnect the battery cable.
3.Move the battery cable to the side (1), and then remove the 3 Phillips PM 2.5×4.2 screws (2) that
secure the battery to the top cover.
Component replacement procedures 35 
						

							4.Remove the battery from the computer (3).
Reverse this procedure to install the battery.
36 Chapter 4   Removal and replacement procedures 
						

							Hard drive
DescriptionSpare part number
320-GB 7200RPM SATA 7mm 634862–005
320-GB 5400RPM SATA 7mm 645193–005
500-GB 5400RPM SATA 7mm 683802–005
32-GB mSATA solid-state drive (SSD) 687100–001
Before removing the hard drive or SSD, 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 from the computer.
4.Remove the display panel (see 
Display panel on page 31).
5.Remove the base enclosure (see 
Base enclosure on page 33).
6.Disconnect the battery cable (see 
Battery on page 35).
Remove the hard drive:
1.Disconnect the hard drive cable from the system board (1), and then remove the 4 screws (2)
securing the hard drive to the top cover.
Component replacement procedures 37 
						

							2.Remove the hard drive (3).
3.Remove the hard drive connector cable (1). Remove the 4 screws (2) securing the hard drive
bracket to the hard drive, and then remove the hard drive bracket (3).
4.Remove the hard drive (3).
Remove the mSATA solid-state drive:
38 Chapter 4   Removal and replacement procedures 
						

							▲Remove the screw (1), and then remove the mSATA solid-state drive (2).
Reverse these procedures to reassemble and install the hard drive.
Component replacement procedures 39 
						

							RTC battery
DescriptionSpare part number
RTC battery686922–001
Before removing the RTC battery, 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 from the computer.
4.Remove the display panel (see 
Display panel on page 31).
5.Remove the base enclosure (see 
Base enclosure on page 33).
6.Disconnect the battery cable (see 
Battery on page 35).
Remove the RTC battery:
1.Disconnect the RTC battery cable from the system board (1). Use a thin, non-conductive tool to
remove the RTC battery from the socket on the system board.
2.Gently hold down the media card reader board (2), and remove the RTC battery (3).
NOTE:The RTC battery is attached to the system board by foam material rather than double-
sided adhesive.
40 Chapter 4   Removal and replacement procedures 
						

							Reverse this procedure to install the RTC battery on computer models. When installing the RTC
battery, make sure the “+” sign faces up.
Memory module
DescriptionSpare part number
4-GB memory module (PC3, 12800, 1600-MHz) 641369-001
2-GB memory module (PC3, 12800, 1600-MHz) 652972-005
8-GB memory module (PC3, 12800, 1600-MHz) 670034-005
Before removing a memory module, 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 from the computer.
4.Remove the display panel (see 
Display panel on page 31).
5.Remove the base enclosure (see 
Base enclosure on page 33).
6.Remove the keyboard (see 
Keyboard on page 60).
7.Remove the top cover (see 
Top cover on page 63).
8.Disconnect the battery cable (see 
Battery on page 35).
Remove the memory module:
1.Spread the retaining tabs (1) on each side of the memory module slot to release the
memory module. (The memory module tilts up.)
CAUTION:To prevent damage to the memory module, hold it by the edges only. Do not touch
the components on the memory module.
2.Slide the memory module forward (2).
Component replacement procedures 41 
						

							3.Remove the memory module (3).
Reverse this procedure to install a memory module.
42 Chapter 4   Removal and replacement procedures