HP ProBook 4540s Support Question

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Question posted by bjsmKkerni on April 29th, 2014

How To Unlock Keyboard On Probook 4540s

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Related HP ProBook 4540s Manual Pages

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 6

...drive ...46 Hard drive ...48 Memory modules ...50 WWAN module ...52 WLAN/Bluetooth combo card 54 Keyboard ...56 Heat shield ...59 Fan ...61 Heat sink ...63 Processor ...66 Top cover ...67 ... ...84 System board ...85 RTC battery ...88 Optical drive extension board (4540s models only 90 Hard drive extension board (4540s models only 92 Power cable ...94 Latch assembly ...95 Display assembly ...97...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 12

Category Description 4540s (UMA) 4540s (Disc) 4440s (UMA) Supports the following WLAN formats: √ √ √...plug/unplug with auto-detect) HDMI √ √ √ Multi-pin AC port √ √ √ Keyboard/pointing Full-sized keyboard devices √ √ √ Numeric keypad √ √ Touchpad includes: supports 2-way scroll with √...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 15

Category Description WWAN module Keyboard 4540s (UMA) √ √ 4540s (Disc) √ 4440s (UMA) √ √ 4440s/ 4441s (Disc) √ 7

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 40

... more Cable Kit spare part information) 683478-001 N Display bezel for use with HP ProBook 4540s models with a webcam 683479-001 N Display bezel for use with HP ProBook 4540s models without a webcam 683480-001 N Display Hinge Kit for use on 4540s models (includes left and right hinges, hinge covers, screw covers, and screws) 683481-001...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 41

...) 683641-001 N Display bezel for use with HP ProBook 4440s/4441s models with a webcam Sequential part number listing 33 Spare part number CSR Description flag 683491-281 A Keyboard for use in 4540s models in Thailand 683491-291 A Keyboard for use in 4540s models in Japan 683491-A41 A Keyboard for use in 47540s models in Belgium 683491...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 42

... bezel for use with HP ProBook 4440s/4441s models without a webcam...Keyboard for use in 4440s/4441s models in Brazil 683657-281 A Keyboard for use in 4440s/4441s models in Thailand 683657-291 A Keyboard for use in 4440s/4441s models in Japan 683657-AB1 A Keyboard... 687696-001 N Heat shield for use in 4540s models 690978-001 A Bottom door for use in 4540s models 690979-001 A Bottom door for use ...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 57

Remove the four Phillips PM3.0×3.0 hard drive cover screws (1) that secure the cover to unlock it. 5. If it is necessary to replace the hard drive cover, lift the Mylar tab to the hard drive. Component replacement procedures 49 Pull ... the computer to disengage the hard drive from the connector, and then lift the hard drive out of the hard drive bay. NOTE: Model 4540s shown. 4. 3.

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 64

... Spare part number 683491-xxx 683657-xxx Before removing the keyboard, follow these steps: 1. For model 4540s, remove the three Phillips PM2.5×6.0 screws that secure the keyboard to the computer. 3. Shut down through the operating system. 2. Keyboard NOTE: For a detailed list of available keyboards, see Sequential part number listing on , and then shut it...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 67

...Remove the following components: a. Bottom door (see Keyboard on page 56) Remove the heat shield: 1. Disconnect all external devices connected to step 7. 3. Keyboard (see Bottom door on page 44). If ... the inside of the shield upward (3). Heat shield Description Heat shield for use in 4540s models Heat shield for use in Hibernation, turn the computer on, and then shut ...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 69

Remove the battery (see Keyboard on page 56) c. Keyboard (see Battery on page 42). 5. Disconnect the fan cable (1) from the computer. 4. b. Component replacement procedures 61...the system board. 3. Heat shield (see Bottom door on page 44). Fan Description Fan for use in 4540s models Fan for use in Hibernation, turn the computer on, and then shut it down the computer.

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 71

Description For use in 4540s models: Heat sink for use in models with UMA graphics Heat sink for use in models with discrete graphics For use ...include replacement thermal material. Shut down . 2. Remove the following components: a. Bottom door (see Battery on page 61) Remove the heat sink: 1. Keyboard (see Heat shield on , and then shut it down through the operating system. 2. Heat shield (see...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 76

...door on page 54) d. WLAN/Bluetooth module (see WWAN module on page 59) Remove the top cover: 1. For 4540s models, disconnect the following components: a. Remove the following cables from the computer. 4. b. Position the computer upright with... battery (see Heat shield on page 52) e. Memory modules (see Keyboard on page 56) f. Keyboard (see Memory modules on page 42). 5.

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 83

...67) Remove the fingerprint reader board: 1. b. Description Fingerprint reader board for use in 4540s models Fingerprint reader board for use in Hibernation, turn the computer on page 44). Disconnect ... 3. Remove the battery (see Keyboard on page 42). 5. Slide the bracket toward you are unsure whether the computer is off the top cover (3). Keyboard (see Battery on page 56) ...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 85

... Top cover on page 56) c. Top cover (see Keyboard on page 67) Remove the speaker assembly: 1. If disassembling model 4440s/4441s, ...as possible. 8. Component replacement procedures 77 Position the top cover upside-down with the front toward you. 3. For model 4540s, disconnect the speaker cable from the system board (1) and remove the cables from under the power button board cable and...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 87

... Speaker assembly on page 67) d. Speaker (see Keyboard on page 44). Component replacement procedures 79 Function board/Power button board assembly Description Function board/Power button board assembly for use in 4540s models (includes cable) Function board/Power button board for use in Hibernation, turn the computer on page 42). 5. Top cover...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 90

... Chapter 4 Removal and replacement procedures b. USB connector assembly The USB connector assembly is off or in the Cable Kit, spare part number 683477-001 for 4540s models and 683640-001 for 4440s/4441s models. Remove the battery (see Keyboard on page 56) c. Keyboard (see Battery on page 44).

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 92

...the computer. 3. Remove the battery cable from the computer. 4. Remove the battery (see Keyboard on page 56) c. Keyboard (see Battery on , and then shut it down the computer. Battery cable The battery ...cable is off or in the Cable Kit, spare part number 683477-001 for 4540s models, ...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 93

... unplugging the power cord from the AC outlet, and then unplugging the AC adapter from the computer. 4. Keyboard (see Keyboard on page 63) h. Heat sink (see Top cover on page 48) c. Top cover (see Heat...door on page 59) f. b. Fan (see Battery on page 61) g. Description For use in 4540s models with: UMA graphics with WWAN Spare part number 683496-001 683495-001 683493-001 683494-001 683493...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 98

...on page 67) k. Top cover (see Heat sink on page 44). Optical drive extension board (4540s models only) Description Optical drive extension board Spare part number 683498-001 Before removing the optical drive...components: a. Hard drive (see WWAN module on page 59) h. Keyboard (see Heat shield on page 52) f. Heat shield (see Keyboard on , and then shut it down the computer. If you ...

HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP ProBook 4441s Notebook PC - Maintenance and Service Guide - Page 105

... unplugging the power cord from the AC outlet, and then unplugging the AC adapter from the system board. b. Top cover (see Keyboard on page 25. Description For use in silver HP ProBook 4540s models: ● 39.6-cm (15.6-inch) HD, anti-glare, without webcam ● 39.6-cm (15.6-inch) HD, anti-glare, with...