HP ProBook 4525s Service Manual

Audio board
NOTE: The spare part number for the audio board is 598684-001.
Before removing the audio board, 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 battery (see
Battery on page 48).
5. Remove the switch cover and keyboard (see
Switch cover and keyboard on page 49).
6. Remove the optical drive (see
Optical drive on page 54).
7. Remove the power button board cable (see
Power button board on page 56).
8. Remove the speakers (see
Speakers on page 58).
9. Remove the thermal shield (see
Thermal shield on page 59).
10. Remove the display assembly (see
Display assembly on computers with 15.6-in displays
on page 74).
11. Remove the palm rest (see
Palm rest on page 69).
12. Remove the hard drive (see
Hard drive on page 72).
13. Remove the top cover (see
Top cover on page 81).
Remove the audio board:
1. Position the computer right-side up with the front toward you.
2. Remove the M2.5×3.0 screw (1) that secures the audio board to the system board.
3. Release the ZIF connector (2) and remove the cable (3).
Component replacement procedures 89

HP ProBook 4525s Specifications

General

Graphics	ATI Mobility Radeon HD 4250
Processor	AMD Turion II, AMD Athlon II
Display	15.6-inch diagonal LED-backlit HD anti-glare (1366 x 768 resolution)
Memory	Up to 8 GB DDR3
Storage	250GB, 320GB, 500GB HDD
Operating System	Genuine Windows 7 Professional, Genuine Windows 7 Home Premium, Genuine Windows 7 Home Basic
Battery	6-cell Lithium-Ion
Chipset	AMD M880G
Optical Drive	DVD+/-RW SuperMulti DL
Wireless	802.11b/g/n, Bluetooth 2.1
Audio	Integrated stereo speakers, Integrated microphone
Ports	3 USB 2.0, VGA, HDMI, RJ-45, headphone/microphone combo jack
Card Reader	SD/MMC
Webcam	2 MP Webcam