HP mt42 Maintenance and Service Guide
HP mt42 Mobile Thin Client
Maintenance and Service Guide
© Copyright 2015, 2016 HP Development
Company, L.P.
AMD and AMD Radeon are trademarks of
Advanced Micro Devices, Inc. Bluetooth is a
trademark owned by its proprietor and used by
HP Inc. under license. Microsoft and Windows
are either registered trademarks or trademarks
of Microsoft Corporation in the United States
and/or other countries.
The information contained herein is subject to
change without notice. The only warranties for
HP products and services are set forth in the
express warranty statements accompanying
such products and services. Nothing herein
should be construed as constituting an
additional warranty. HP shall not be liable for
technical or editorial errors or omissions
contained herein.
Third Edition: December 2016
First Edition: October 2015
Document Part Number: 813464-003
Product notice
This user guide describes features that are
common to most models. Some features may
not be available on your computer.
Software terms
By installing, copying, downloading, or
otherwise using any software product
preinstalled on this computer, you agree to be
bound by the terms of the HP End User License
Agreement (EULA). If you do not accept these
license terms, your sole remedy is to return the
entire unused product (hardware and software)
within 14 days for a full refund subject to the
refund policy of your seller.
For any further information or to request a full
refund of the price of the computer, please
contact your seller.
Important Notice about Customer Self-Repair parts
CAUTION: Your computer includes Customer Self-Repair parts and parts that should only be accessed by an
authorized service provider. See Chapter 5, "Removal and replacement procedures for Customer Self-Repair
parts," for details. Accessing parts described in Chapter 6, "Removal and replacement procedures for
Authorized Service Provider only parts," can damage the computer or void your warranty.
iii
iv Important Notice about Customer Self-Repair parts
Safety warning notice
WARNING! To reduce the possibility of heat-related injuries or of overheating the device, do not place the
device directly on your lap or obstruct the device air vents. Use the device only on a hard, at surface. Do not
allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs or
clothing, to block airow. Also, do not allow the AC adapter to contact the skin or a soft surface, such as
pillows or rugs or clothing, during operation. The device and the AC adapter comply with the user-accessible
surface temperature limits dened by the International Standard for Safety of Information Technology
Equipment (IEC 60950-1).
v
vi Safety warning notice
Table of contents
1 Product description ....................................................................................................................................... 1
2 External component identication .................................................................................................................. 4
Right ....................................................................................................................................................................... 4
Left ......................................................................................................................................................................... 5
Display .................................................................................................................................................................... 6
Top .......................................................................................................................................................................... 7
TouchPad ............................................................................................................................................. 7
Lights ................................................................................................................................................... 8
Buttons and speakers .......................................................................................................................... 9
Keys ................................................................................................................................................... 10
Bottom ................................................................................................................................................................. 12
Front ..................................................................................................................................................................... 13
Locating system information .............................................................................................................................. 13
3 Illustrated parts catalog .............................................................................................................................. 15
Computer major components .............................................................................................................................. 15
Display assembly subcomponents ...................................................................................................................... 17
Plastics Kit ........................................................................................................................................................... 18
Miscellaneous parts ............................................................................................................................................. 18
4 Removal and replacement procedures preliminary requirements .................................................................... 20
Tools required ...................................................................................................................................................... 20
Service considerations ......................................................................................................................................... 20
Plastic parts ....................................................................................................................................... 20
Cables and connectors ...................................................................................................................... 21
Drive handling ................................................................................................................................... 21
Grounding guidelines ........................................................................................................................................... 22
Electrostatic discharge damage ........................................................................................................ 22
Packaging and transporting guidelines .......................................................................... 23
Workstation guidelines ................................................................................................... 23
Equipment guidelines ..................................................................................................... 24
5 Removal and replacement procedures for Customer Self-Repair parts ............................................................. 25
Component replacement procedures .................................................................................................................. 25
Bottom cover ..................................................................................................................................... 25
vii
Battery ............................................................................................................................................... 28
SSD ..................................................................................................................................................... 29
Memory modules ............................................................................................................................... 30
WLAN/Bluetooth combo card ............................................................................................................ 32
WWAN module ................................................................................................................................... 34
Keyboard ........................................................................................................................................... 36
6 Removal and replacement procedures for Authorized Service Provider parts ................................................... 39
Component replacement procedures .................................................................................................................. 39
RTC battery ........................................................................................................................................ 40
Internal base plate ............................................................................................................................ 41
Heat sink/fan assembly .................................................................................................................... 43
Power button board .......................................................................................................................... 45
Touchpad button board ..................................................................................................................... 46
USB/audio board ................................................................................................................................ 47
System board .................................................................................................................................... 48
Speaker assembly ............................................................................................................................. 50
Display assembly ............................................................................................................................... 51
Top cover ........................................................................................................................................... 55
7 Computer Setup (BIOS) and MultiBoot ........................................................................................................... 56
Using Computer Setup ......................................................................................................................................... 56
Starting Computer Setup .................................................................................................................. 56
Navigating and selecting in Computer Setup ................................................................................... 56
Restoring factory settings in Computer Setup ................................................................................. 57
Updating the BIOS ............................................................................................................................. 57
Determining the BIOS version ......................................................................................... 57
Downloading a BIOS update ........................................................................................... 58
Using MultiBoot ................................................................................................................................................... 59
About the boot device order ............................................................................................................. 59
Choosing MultiBoot preferences ....................................................................................................... 59
Setting a new boot order in Computer Setup ................................................................. 59
Dynamically choosing a boot device using the f9 prompt ............................................. 60
Setting a MultiBoot Express prompt .............................................................................. 60
Entering MultiBoot Express preferences ........................................................................ 60
Using HP Sure Start (select models only) ............................................................................................................ 60
8 Using HP PC Hardware Diagnostics (UEFI) ....................................................................................................... 61
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................................... 61
viii
9 Device management .................................................................................................................................... 63
10 Diagnostics and troubleshooting ................................................................................................................ 64
Lights ................................................................................................................................................................... 64
Wake-on LAN ....................................................................................................................................................... 64
Power-on sequence ............................................................................................................................................. 65
Power-on diagnostic tests ................................................................................................................................... 65
Troubleshooting ................................................................................................................................................... 65
Basic troubleshooting ....................................................................................................................... 65
Conguring a PXE server ..................................................................................................................................... 66
11 Using HP ThinUpdate to restore the image ................................................................................................... 67
12 Adding an image restore tool ...................................................................................................................... 68
13 Power cord set requirements ...................................................................................................................... 69
Requirements for all countries ............................................................................................................................ 69
Requirements for specic countries and regions ................................................................................................ 69
14 Statement of memory volatility .................................................................................................................. 71
Nonvolatile memory usage ................................................................................................................................. 73
Questions and answers ....................................................................................................................................... 75
Using HP Sure Start (select models only) ............................................................................................................ 76
15 Specications ............................................................................................................................................ 77
Input power .......................................................................................................................................................... 77
Operating environment ....................................................................................................................................... 77
16 Recycling .................................................................................................................................................. 78
Index ............................................................................................................................................................. 79
ix
x
1 Product description
Category Description
Product Name HP mt42 Mobile Thin Client
Processors
Graphics Internal graphics:
Panel 35.6-cm (14.0-in), eDP 1.2 slim, full high-denition (FHD), AntiGlare (AG), SVA (1920 x 1080) display
Memory Two customer accessible memory module slots
Primary storage M.2 (NGFF) 2242 solid-state drive
Audio and video Conexant smart amplier and ambient noise suppression
AMD® Carrizo processor:
A8 Pro-8600B 1.6 GHz (max turbo frequency 3 GHz), DDR3-2133, 2 MB L2 Cache, 15 W) with Radeon RX
graphics
AMD UMA graphics (with shared video memory)
Up to three independent displays supported with docking solution
DDR3L-12800 (1600 MHz) dual channel support
Supports up to 4 GB of system RAM (4096 MB (4096 MB×1)) with the WES7 operating system
Supports up to 8 GB of system RAM (4096 MB (4096 MB×2)) with the Windows 10 IoT operating system
M.2 (2242) 32 GB SATA-3
Dual-array microphone
Premium stereo speakers
Webcam (720p)
Ethernet Broadcom 5762 10/100/1000 Ethernet NIC with DASH Support
S3/S4/S5 Wake-on-LAN
Wireless WLAN
Integrated wireless local area network (WLAN) options by way of wireless module
Two WLAN antennas built into display assembly
Supports disabled Bluetooth
Intel Pro Wireless Display (WiDi Pro)
Compatible with Miracast-certied devices
Supports the following WLAN modules:
●
Broadcom 43228 dual-band 802.11abgn 2x2 Wi-Fi Adapter + BT 4.0 combo adapter
●
Intel 7265 802.11 AC 2x2 WiFi + BT 4.2 Combo Adapter (non-vPro)
WWAN
Integrated wireless wide area network (WWAN) options by way of wireless module
Two WWAN antennas built into display assembly
1
Category Description
Supports the following WWAN module:
●
Huawei MU736 HSPA+ with GPS M.2 (NGFF)
●
HP lt4120 LTE/EVDO/HSPA+ SnapdragonT X5 LTE Mobile Broadband Module
External media cards Micro SIM card reader
Memory card reader (SD, SDHC, SDXC)
Ports VGA (Dsub 15 pin) supporting 1920x1200 external resolution @ 75Hz; hot plug/unplug and auto detect
USB 3.0 charging port
USB 3.0 port
USB Type-C port
DisplayPort
RJ-45
Docking connector
Audio-out (headphone)/audio-in (microphone) combo jack
AC port
Keyboard/pointing
devices
Power requirements AC adapter:
Keyboard:
Dual point
Spill resistant with drain
TouchPad:
Gestures enabled by default: two-nger scrolling, two-nger pinch-zoom
Taps enabled by default
On/o button
Supports 2-way scroll w/ legend
Mylar
65 W HP Smart AC adapter
45 W HP Smart AC adapter
45 W, 2-prong AC adapter
Power cord:
2-wire cord, 1.0 m
3-wire cord, 1.0 m (with ground pin)
3-wire cord, 1.8 m (with ground pin)
Security Security lock
Operating system Preinstalled:
2 Chapter 1 Product description
Supports Trusted Platform Module (TPM) 1.2 or 2.0 (Inneon, soldered down)
Integrated Smart Card reader (active)
Preboot authentication (password, smart card)
Category Description
Windows Embedded Standard 7E (32-bit)
Windows 10 IoT Enterprise 2015 LTSB for Retail and Thin Clients
Web-only support
Windows Embedded Standard 7E (32-bit)
Serviceability End user replaceable parts:
AC adapter
Battery
M.2 SSD
Memory module
WLAN
WWAN
Keyboard
3
2 External component identication
Right
Component Description
(1) USB Type-C (charging) port Connects any USB device with a Type-C connector.
NOTE: USB Type-C ports charge products such as cell phones,
laptops, tablets, and MP3 players, even when the computer is
o. Also, some USB Type-C ports connect DisplayPort, VGA,
HDMI and other video devices to provide video output.
NOTE: Adapters (purchased separately) may be required.
(2) Dual-Mode DisplayPort Connects an optional digital display device, such as a high-
performance monitor or projector.
(3) Memory card reader Reads optional memory cards that store, manage, share, or
access information.
(4) Audio-out (headphone)/Audio-in (microphone)
jack
(5) USB 3.0 port Connects an optional USB device, such as a keyboard, mouse,
(6) RJ-45 (network) jack Connects a network cable.
Connects optional powered stereo speakers, headphones,
earbuds, a headset, or a television audio cable. Also connects an
optional headset microphone. This jack does not support
optional microphone-only devices.
WARNING! To reduce the risk of personal injury, adjust the
volume before putting on headphones, earbuds, or a headset.
For additional safety information, see the Regulatory, Safety,
and Environmental Notices. To access the user guides, select
Start > HP > HP Documentation.
NOTE: When a device is connected to the jack, the computer
speakers are disabled.
NOTE: Be sure that the device cable has a 4-conductor
connector that supports both audio-out (headphone) and
audio-in (microphone).
external drive, printer, scanner or USB hub.
(7) Docking connector Connects an optional docking device.
4 Chapter 2 External component identication
Left
Component Description
(8) SIM slot Supports a wireless subscriber identity module (SIM) card.
(9) Power connector Connects an AC adapter.
Component Description
(1) Security cable slot Attaches an optional security cable to the computer.
NOTE: The security cable is designed to act as a deterrent, but
it may not prevent the computer from being mishandled or
stolen.
(2) Vents (2) Enable airow to cool internal components.
NOTE: The computer fan starts up automatically to cool
internal components and prevent overheating. It is normal for
the internal fan to cycle on and o during routine operation.
(3) External monitor port Connects an external VGA monitor or projector.
(4) USB 3.0 charging (powered) port Connects an optional USB device, such as a keyboard, mouse,
external drive, printer, scanner or USB hub. Standard USB ports
will not charge all USB devices or will charge using a low current.
Some USB devices require power and require you to use a
powered port.
NOTE: USB charging ports can also charge select models of
cell phones and MP3 players, even when the computer is o.
(5) Smart card reader Supports optional smart cards.
Left 5
Display
Component Description
(1) WLAN antennas (2)* Send and receive wireless signals to communicate with wireless local
area networks (WLAN).
(2) WWAN antennas (2)* Send and receive wireless signals to communicate with wireless wide
area networks (WWAN).
(3) Internal microphones Record sound.
(4) Webcam light On: The webcam is in use.
(5) Webcam Records video and captures photographs. Some models allow you to
video conference and chat online using streaming video.
*The antennas are not visible on the outside of the computer. For optimal transmission, keep the areas immediately around the
antennas free from obstructions. To see wireless regulatory notices, see the section of the Regulatory, Safety, and Environmental
Notices that applies to your country or region. To access the user guides, select Start > HP > HP Documentation.
6 Chapter 2 External component identication
Top
TouchPad
Component Description
(1) Pointing stick (select models only) Moves the pointer and selects or activates items on the screen.
(2) Left pointing stick button (select models only) Functions like the left button on an external mouse.
(3) TouchPad on/o button Turns the TouchPad on and o.
(4) TouchPad zone Moves the pointer and selects or activates items on the screen.
NOTE: The TouchPad also supports edge-swipe gestures. For
more information, see Edge swipes (select models only) on
page 34.
(5) Left TouchPad button Functions like the left button on an external mouse.
(6) Right pointing stick button (select models only) Functions like the right button on an external mouse.
(7) Right TouchPad button Functions like the right button on an external mouse.
Top 7
Lights
Component Description
(1) Power light
(2) Microphone mute light
(3) Num lock light On: Num lock is on.
(4) Wireless light On: An integrated wireless device, such as a wireless local area
(5) Mute light
(6) Caps lock light On: Caps lock is on, which switches the keys to all capital letters.
(7) TouchPad light
●
On: The computer is on.
●
Blinking: The computer is in the Sleep state, a power-saving
state. The computer shuts o power to the display and
other unneeded components.
●
O: The computer is o.
●
Amber: microphone sound is o.
●
O: microphone sound is on.
network (WLAN) device and/or a Bluetooth® device, is on.
NOTE: On some models, the wireless light is amber when all
wireless devices are o.
●
Amber: Computer sound is o.
●
O: Computer sound is on.
●
On: The TouchPad is o.
●
O: The TouchPad is on.
8 Chapter 2 External component identication
Buttons and speakers
Component Description
(1) Power button
(2) Speakers (2) Produce sound.
(3) Wireless button Turns the wireless feature on or o but does not establish a
●
When the computer is o, press the button to turn on the
computer.
●
When the computer is on, press the button briey to initiate
Sleep.
●
When the computer is in the Sleep state, press the button
briey to exit Sleep.
CAUTION: Pressing and holding down the power button will
result in the loss of unsaved information.
If the computer has stopped responding and Windows® shutdown
procedures are ineective, press and hold the power button for at
least 15 seconds to turn o the computer.
To learn more about your power settings:
WES7: Select Start > Control Panel > System and Security >
Power Options.
Windows 10 IoT: Right-click Start, select Control Panel, and then
select Power Options.
wireless connection.
(4) Volume mute button Mutes and restores speaker sound.
Top 9
Keys
Component Description
(1) esc key Displays system information when pressed in combination with
the fn key.
(2) fn key Executes frequently used system functions when pressed in
combination with a function key, the num lk key, the esc key, or
the b key.
(3) Windows button Displays the Windows Start menu.
(4) Function keys Execute frequently used system functions when pressed in
combination with the fn key.
(5) Embedded numeric keypad When the keypad is turned on, it can be used like an external
numeric keypad.
Each key on the keypad performs the function indicated by the
icon in the upper-right corner of the key.
(6) Windows applications key Displays a shortcut menu for items beneath the cursor.
(7) num lk key Turns the embedded numeric keypad on and o when pressed in
combination with the fn key.
10 Chapter 2 External component identication
Component Description
(1) esc key Displays system information when pressed in combination with
the fn key.
(2) fn key Executes frequently used system functions when pressed in
combination with a function key, the num lk key, the esc key, or
the b key.
(3) Windows button Displays the Windows Start menu.
(4) Function keys Execute frequently used system functions when pressed in
combination with the fn key.
(5) num lk key Alternates between the navigational and numeric functions on
the integrated numeric keypad.
(6) Integrated numeric keypad When num lk has been enabled, it can be used like an external
numeric keypad.
Top 11
Bottom
Component Description
(1) Docking connectors (2) Connect an optional docking device.
(2) Vents (2) Enable airow to cool internal components.
NOTE: The computer fan starts up automatically to cool
internal components and prevent overheating. It is normal
for the internal fan to cycle on and o during routine
operation.
12 Chapter 2 External component identication
Front
Component Description
(1) Wireless light On: An integrated wireless device, such as a wireless local
area network (WLAN) device and/or a Bluetooth® device, is
on.
NOTE: On some models, the wireless light is amber when
all wireless devices are o.
(2) Power light
(3) Battery light When AC power is connected:
(4) Drive light Blinking white: The hard drive is being accessed.
Locating system information
●
On: The computer is on.
●
Blinking: The computer is in the Sleep state, a powersaving state. The computer shuts o power to the
display and other unneeded components.
●
O: The computer is o.
●
White: The battery charge is greater than 90 percent.
●
Amber: The battery charge is from 0 to 90 percent.
●
O: The battery is not charging.
When AC power is disconnected (battery not charging):
●
Blinking amber: The battery has reached a low
battery level. When the battery has reached a critical
battery level, the battery light begins blinking
rapidly.
●
O: The battery is not charging.
Important system information is located on the bottom edge of the tablet or on the keyboard base. You may
need the information when travelling internationally or when you contact support:
(1): Serial number
(2): Product number
(3): Model number
(4): Warranty period
IMPORTANT: Check the following locations for the labels described in this section: the bottom of the
computer, inside the battery bay, under the service door, or on the back of the display.
Front 13
●
Service label—Provides important information to identify your computer. When contacting support, you
will probably be asked for the serial number, and possibly for the product number or the model number.
Locate these numbers before you contact support.
Your service label will resemble one of the examples shown below. Refer to the illustration that most
closely matches the service label on your computer.
Component
(1) Serial number
(2) Product number
(3) Warranty period
(4) Model number (select products only)
Component
(1) Model name (select products only)
(2) Product number
(3) Serial number
(4) Warranty period
●
Regulatory label(s)—Provide(s) regulatory information about the computer.
●
Wireless certication label(s)—Provide(s) information about optional wireless devices and the approval
markings for the countries or regions in which the devices have been approved for use.
Using Windows, briey press the fn+esc key combination to display the System Information screen, which
provides the product name and serial number of your computer, as well as information about the memory,
processor, BIOS, and keyboard.
14 Chapter 2 External component identication
3 Illustrated parts catalog
Computer major components
NOTE: HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then
follow the on-screen instructions.
NOTE: Details about your computer, including model, serial number, product key, and length of warranty,
are on the service tag at the bottom of your computer. See Locating system information on page 13 for
details.
Computer major components 15
Item Component Spare part number
(1) Display assembly: Non-touch display assemblies are spared at the subcomponent level only. For more non-touch display
assembly spare part information, see Display assembly subcomponents on page 17.
(2) Keyboard 836634-xx1
(3) Top cover 821173-001
(4) Power button board 821169-001
(5) USB/audio board (includes cable) 837846-001
(6) TouchPad 821171-001
(7) Speakers (includes cable) 821170-001
(8) System board (includes processor and replacement thermal material)
For use in models with the Windows IoT operating system 827570-301
For use in models with Windows Embedded Standard (WES) 7E operating system 827570-001
(9) RTC battery 665733-001
(10) Heat sink/fan assembly 821163-001
(11) Internal base plate not spared
(12) Memory module
4-GB (PC3L-12800, 1600-MHz, DDR3L) 691740-001
(13) WWAN module
HP lt4120 LTE/EVDO/HSPA+ SnapdragonT X5 LTE Mobile Broadband Module 800870-001
Huawei MU736 HSPA+ with GPS M.2 (NGFF) 822828-001
(14) WLAN/Bluetooth combo card
Intel 7265 802.11 AC 2x2 WiFi + BT 4.2 Combo Adapter (non-vPro) 793840-001
Broadcom 43228 dual-band 802.11abgn 2x2 Wi-Fi Adapter + BT 4.0 combo adapter (not available in
Indonesia)
Broadcom 43228 dual-band 802.11abgn 2x2 Wi-Fi Adapter + BT 4.0 combo adapter (Indonesia only) 812132-001
(15) Solid-state drive (SSD), 2242.M2
128 GB 854106-001
32 GB 827578-001
(16) Battery 800513-001
(17) Bottom cover 821162-001
797884-001
16 Chapter 3 Illustrated parts catalog
Display assembly subcomponents
Item Component Spare part number
(1) Bezel 821160-001
Hinge kit 821166-001
(2) Left hinge cover (a) and right hinge cover (b) (spared with hinges)
(3) Left hinge (a) and right hinge (b)
(4) Microphone module 821168-001
(5) Webcam module (includes microphone) 821676-001
(6) Display/webcam cable 821174-001
(7) WLAN antenna (spared with back cover)
(8) WWAN antenna (spared with back cover)
(9) Raw panel 823951-001
(10) Back cover (includes antennas) 821161-001
Display assembly subcomponents 17
Plastics Kit
Item Component Spare part number
Plastics Kit 821175-001
(1) Fingerprint reader blank
(2) SD card blank
Miscellaneous parts
Component Spare part number
AC adapter:
45 W HP Smart AC adapter, nPFC, slim 741727-001
45 W HP Smart AC adapter, nPFC, 2P 742436-001
65 W HP Smart AC adapter, nPFC, emerging markets 714657-001
65 W HP Smart AC adapter, nPFC, S-3P 710412-001
65 W HP Smart AC adapter, nPFC 693711-001
HP Mobile Connect 714749-001
HP DisplayPort to HDMI cable 749288-001
HP Essential Top Load Case 679921-001
HP Professional Slim Top Load Case 703888-001
Cable lock docking station 575921-001
HP USB Laser Mouse 674318-001
HP USB Travel Mouse 757770-001
Power cord (3-pin, C5, black, 1.83-m), for use in:
Argentina 401300-001
Australia 213356-001
18 Chapter 3 Illustrated parts catalog
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