GRASS VALLEY T2 Elite 2 User manual

www.grassvalley.com
T2 Elite 2/Pro 2/Express 2
T2 Elite/Pro/Express
INTELLIGENT DIGITAL DISK RECORDER
Service Manual
F2811604051
May 2016
Version 2.3.0

2T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual May 16, 2016
Copyright Copyright 2012 Grass Valley K.K. All rights reserved. Portions of software © 2000 – 2012, Microsoft
Corporation. All rights reserved. This document may not be copied in whole or in part, or otherwise
reproduced except as specifically permitted under U.S. copyright law, without the prior written
consent of Grass Valley, Inc., P.O. Box 59900, Nevada City, California 95959-7900. This product
may be covered by one or more U.S. and foreign patents.
Grass Valley is a trademark of GVBB Holdings S.a.r.l.
Disclaimer Product options and specifications subject to change without notice. The information in this
manual is furnished for informational use only, is subject to change without notice, and should
not be construed as a commitment by Grass Valley, Inc. Grass Valley, Inc. assumes no
responsibility or liability for any errors or inaccuracies that may appear in this publication.
U.S. Government
Restricted Rights
Legend
Use, duplication, or disclosure by the United States Government is subject to restrictions as set
forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause
at DFARS 252.277-7013 or in subparagraph c(1) and (2) of the Commercial Computer
Software Restricted Rights clause at FAR 52.227-19, as applicable. Manufacturer is Grass
Valley, Inc., P.O. Box 59900, Nevada City, California 95959-7900 U.S.A.
Trademarks and
Logos
Grass Valley is a trademark of GVBB Holdings S.a.r.l. Grass Valley USA, LLC products are covered
by U.S. and foreign patents, issued and pending. Additional information regarding Grass Valley
USA, LLC trademarks and other proprietary rights may be found at www.grassvalley.com.
Other trademarks and logos used in this document are either registered
trademarks or trademarks of the manufacturers or vendors of the associated
products, such as Microsoft®Windows®operating system, Windows Media®
player, Internet Explorer®internet browser, and SQL Server™. QuickTime and
the QuickTime logo are trademarks or registered trademarks of Apple, Inc., used
under license therefrom. Intel, Core i7 are the trademarks or registered
trademarks of Intel Corporation or its subsidiaries in the United States of America and other
countries.
Grass Valley Web Site This public Web site contains all the latest manuals and documentation, and additional support
information. Use the following URL.
http://www.grassvalley.com.
Manual Explanation • If there are any variations between the explanation in this manual and the actual application
method, priority is given to the actual application method.
• This manual is a common manual for T2 Elite 2, T2 Pro 2, T2 Express 2, T2 Elite, T2 Pro and
T2 Express. Screenshots and illustrations in this manual may vary from those of the actual
product.
• The screenshots used as examples in this manual are those of the development stage, so
they may vary from those in the final product.
• This manual is written for users who have a basic knowledge of how to use a computer.
• If there are no special instructions, perform the same operation as a normal computer
operation.
• The contents of this product may modify without prior notice.
T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual
Version 2.3.0
Copyright © 2012 - 2016 Grass Valley. All rights reserved.

May 16, 2016 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual 3
Contents
Safety Summaries.............................................................................................. 7
Finding Information........................................................................................... 11
Chapter 1 Product Description
Overview Description .............................................................................................. 14
System Description ................................................................................................. 15
PC Subsystem.................................................................................................... 16
Codec Subsystem .............................................................................................. 16
Front Subsystem ................................................................................................ 17
XLR board .......................................................................................................... 17
Fuse board ......................................................................................................... 17
T2 orientation .......................................................................................................... 18
FRU locations (T2 Elite/Pro/Express)................................................................. 18
FRU locations (T2 Elite 2/Pro 2/Express 2)........................................................ 19
FRU functional descriptions .................................................................................... 20
Touch screen LCD.............................................................................................. 20
JOG/Shuttle knob ............................................................................................... 20
Button kit............................................................................................................. 20
Front USB group unit.......................................................................................... 20
Recovery UFD (USB Flash Drive) ...................................................................... 20
Fan (Center/Rear) .............................................................................................. 20
Power supply unit ............................................................................................... 20
2.5 inch removable SSD bay .............................................................................. 21
SSD (for the system) .......................................................................................... 21
HDD/SSD (for data)............................................................................................ 21
I/O board unit...................................................................................................... 21
XLR×6 unit.......................................................................................................... 21
SATA card unit ................................................................................................... 21
Memory (RAM) ................................................................................................... 22
Fuse board unit................................................................................................... 22
Front USB 3.0 board........................................................................................... 22
USB 3.0 cable..................................................................................................... 22
PCI-e USB 3.0 card ............................................................................................ 22
Rear USB 3.0 port .............................................................................................. 22
Media Card Reader Assy ................................................................................... 22
Status indicators...................................................................................................... 23
Power LED ......................................................................................................... 23
LAN port indicator codes .................................................................................... 23
Chapter 2 Maintenance Procedures
Cleaning the touch screen LCD .............................................................................. 26
Starting and exiting the maintenance mode ............................................................ 26
Starting the maintenance mode.......................................................................... 27
Exiting the maintenance mode ........................................................................... 28
Using the Maintenance Tools.................................................................................. 30
Launching the Maintenance Tools...................................................................... 30
Closing the Maintenance Tools .......................................................................... 30
Media drive maintenance ................................................................................... 31
Data maintenance .............................................................................................. 34
System related maintenance .............................................................................. 40
Using the Windows desktop .................................................................................... 44
Verifying, building, and rebuilding a RAID volume .................................................. 44
Verifying the RAID volume ................................................................................. 44
Building the RAID volume................................................................................... 47
Rebuilding the RAID volume (for only the T2 Pro 2/Pro) .................................... 54
Restoring to the factory default condition ................................................................ 59

4T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual May 16, 2016
Contents
Recovery procedure for T2 Elite/Pro/Express .................................................... 59
Recovery procedure for T2 Elite 2/Pro 2/Express 2 ........................................... 66
T2 Recovery Utility for T2 Elite 2/Pro 2/Express 2 ............................................. 68
Chapter 3 Troubleshooting Problems
Step 1: Check configurations .................................................................................. 74
Step 2: Check connections and external equipment ............................................... 74
Shutdown/restart problems ..................................................................................... 74
Checking external equipment.................................................................................. 75
PC monitor problems.......................................................................................... 75
Keyboard problems ............................................................................................ 75
Mouse problems ................................................................................................. 76
Motherboard/BIOS startup ...................................................................................... 76
Windows startup...................................................................................................... 78
T2 system startup.................................................................................................... 78
Thermal problems ................................................................................................... 78
I/O board unit problems........................................................................................... 79
Power supply problems........................................................................................... 80
Front panel problems .............................................................................................. 80
Touch screen LCD and control buttons problems .............................................. 80
Interconnect board problems.............................................................................. 81
2.5 inch removable SSD bay problems................................................................... 82
Media card reader problems ................................................................................... 83
Video problems ....................................................................................................... 83
Audio problems ....................................................................................................... 84
Timecode problems................................................................................................. 84
Operational problems .............................................................................................. 85
System problems .................................................................................................... 85
Storage problems.................................................................................................... 86
Media File System problems .............................................................................. 86
Media disk problems .......................................................................................... 86
Checking the storage system ............................................................................. 88
Chapter 4 Removing and Replacing FRUs
Precautions before operations ................................................................................ 90
Required tools .................................................................................................... 90
Turning off the system and disconnecting the power cord from T2.................... 90
Top cover (front) removal........................................................................................ 92
Top cover (rear) removal......................................................................................... 93
HDD/SSD (for data) removal................................................................................... 94
SSD (for the system) removal ................................................................................. 97
2.5 inch removable SSD bay removal..................................................................... 99
Front USB 3.0 board removal ................................................................................. 102
Media Card Reader Assy removal .......................................................................... 103
Fuse board unit removal ......................................................................................... 105
Front panel removal ................................................................................................ 107
Jog knob removal.................................................................................................... 109
Shuttle knob removal .............................................................................................. 109
Front USB group unit removal................................................................................. 110
Recovery UFD (USB Flash Drive) removal ............................................................. 112
Touch screen LCD removal .................................................................................... 113
Button kit removal ................................................................................................... 116
Memory (RAM) removal .......................................................................................... 119
XLR×6 unit removal................................................................................................. 120
Rear USB 3.0 port removal ..................................................................................... 121
Center fan (92 mm) removal ................................................................................... 123
Center fan (80 mm) removal ................................................................................... 125

May 16, 2016 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual 5
Rear fan (60 mm) removal ...................................................................................... 126
I/O board unit removal............................................................................................. 128
SATA card unit removal .......................................................................................... 130
PCI-e USB 3.0 card removal ................................................................................... 131
USB 3.0 cable disconnection .................................................................................. 135
Power supply unit removal ...................................................................................... 136
Index ...................................................................................................................... 141

6T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual May 16, 2016
Contents

May 16, 2016 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual 7
Safety Summaries
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to this
product or any products connected to it.
While using this product, you may need to access other parts of the system. Read the
General Safety Summary in other system manuals for warnings and cautions related to
operating the system.
Injury Precautions
Use Proper Power Cord
To avoid fire hazard, use only the power cord specified for this product.
Ground the Product
This product is grounded through the grounding conductor of the power cord. To avoid
electric shock, the grounding conductor must be connected to earth ground. Before
making connections to the input or output terminals of the product, ensure that the product
is properly grounded.
Do Not Operate Without Covers
To avoid electric shock or fire hazard, do not operate this product with covers or panels
removed.
Do Not Operate in Wet/Damp Conditions
To avoid electric shock, do not operate this product in wet or damp conditions.
Do Not Operate in an Explosive Atmosphere
To avoid injury or fire hazard, do not operate this product in an explosive atmosphere.
Avoid Exposed Circuitry
To avoid injury, remove jewelry such as rings, watches, and other metallic objects. Do
not touch exposed connections and components when power is present.
Product Damage Precautions
Use Proper Power Source
Do not operate this product from a power source that applies more than the voltage
specified.
Provide Proper Ventilation
To prevent product overheating, provide proper ventilation.
Do Not Operate With Suspected Failures
If you suspect there is damage to this product, have it inspected by qualified service
personnel.

8T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual May 16, 2016
Safety Summaries
Battery Replacement
To avoid damage, a battery must be replaced once every five years. Please contact Grass
Valley Product Support to replace the battery.
Safety Terms and Symbols
Terms in This Manual
These terms may appear in this manual:
WARNING: Warning statements identify conditions or practices that can result in
personal injury or loss of life.
CAUTION: Caution statements identify conditions or practices that may result in
damage to equipment or other property, or which may cause equipment crucial to
your business environment to become temporarily non-operational.
Terms on the Product
These terms may appear on the product:
DANGER indicates a personal injury hazard immediately accessible as one reads the
marking.
WARNING indicates a personal injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product
The following symbols may appear on the product:
DANGER high voltage
Protective ground (earth) terminal
ATTENTION – refer to manual
!
!
!

May 16, 2016 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual 9
Service Safety Summary
WARNING: The service instructions in this manual are intended for use by
qualified service personnel only. To avoid personal injury, do not perform any
servicing unless you are qualified to do so. Refer to all safety summaries before
performing service.
Do Not Service Alone
Do not perform internal service or adjustment of this product unless another person
capable of rendering first aid and resuscitation is present.
Disconnect Power
To avoid electric shock, disconnect the main power by means of the power cord or, if
provided, the power switch.
Use Care When Servicing With Power On
Dangerous voltages or currents may exist in this product. Disconnect power and
remove battery (if applicable) before removing protective panels, soldering, or
replacing components.
To avoid electric shock, do not touch exposed connections.
Certifications and Compliances
Canadian Certified Power Cords
Products that are relocated to other countries should use nationally certified power
cords and plugs to ensure safe operation of the product.
FCC Emission Control
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. Operation of this equipment in
a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense. Changes or modifications not
expressly approved by Grass Valley can affect emission compliance and could void the
user’s authority to operate this equipment.
Canadian EMC Notice of Compliance
This digital apparatus does not exceed the Class A limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian
Department of Communications.
This product must not be used in residential areas.
!

10 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual May 16, 2016
Safety Summaries
EMC Directive
Class A Warning
This product must not be used in residential areas.
FCC Emission Limits
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesirable
operation.
Safety Certification
This product has been evaluated and meets the following Safety Certification Standards:
Standard Designed/tested for compliance with:
IEC 60950-1 Information technology equipment - Safety - (2nd:2005)
EN 60950-1 Information technology equipment - Safety - (2006)
J60950 (H22) Electrical Appliance and Material Safety Law

May 16, 2016 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual 11
Finding Information
This Service Manual provides procedures for assessing and solving technical
problems and performing routine maintenance on your T2.
The T2 has two types of operation: Front Panel Mode and Workstation Mode. Front
panel mode allows you to operate the T2 using the touch screen or a mouse while
looking at the touch screen LCD. Workstation Mode allows you to operate the T2
using a mouse or keyboard while looking at PC monitor connected to the T2.
This service manual mainly documents procedures of the Front Panel Mode using a
mouse unless otherwise documented, procedures for operations with the Workstation
Mode are also the same as for the Front Panel Mode.
How this manual is organized
This Service Manual consists of the following:
Chapter 1, Product Description:
Describes the key features, system components, locations and functions of the Field
Replaceable Units (FRUs), and status indicators of the T2.
Chapter 2, Maintenance Procedures:
Contains procedures for periodic maintenance.
Chapter 3, Troubleshooting Problems:
Contains problem descriptions with steps for diagnosing and correcting the cause of the
problem. Use this information if you are having trouble with your T2.
Chapter 4, Removing and Replacing FRUs:
Contains procedures for removing and replacing the Field Replaceable Units (FRUs) .

12 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual May 16, 2016
Finding Information

May 16, 2016 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual 13
Chapter 1
Product Description
This chapter consists of the following:
•"Overview Description" on page 14
•"System Description" on page 15
•"PC Subsystem" on page 16
•"Codec Subsystem" on page 16
•"Front Subsystem" on page 17
•"XLR board" on page 17
•"Fuse board" on page 17
•"T2 orientation" on page 18
•"FRU locations (T2 Elite/Pro/Express)" on page 18
•"FRU locations (T2 Elite 2/Pro 2/Express 2)" on page 19
•"FRU functional descriptions" on page 20
•"Touch screen LCD" on page 20
•"JOG/Shuttle knob" on page 20
•"Button kit" on page 20
•"Front USB group unit" on page 20
•"Recovery UFD (USB Flash Drive)" on page 20
•"Fan (Center/Rear)" on page 20
•"Power supply unit" on page 20
•"2.5 inch removable SSD bay" on page 21
•"SSD (for the system)" on page 21
•"HDD/SSD (for data)" on page 21
•"I/O board unit" on page 21
•"XLR×6 unit" on page 21
•"SATA card unit" on page 21
•"Memory (RAM)" on page 22
•"Fuse board unit" on page 22
•"Front USB 3.0 board" on page 22
•"USB 3.0 cable" on page 22
•"PCI-e USB 3.0 card" on page 22
•"Rear USB 3.0 port" on page 22
•"Media Card Reader Assy" on page 22
•"Status indicators" on page 23
•"Power LED" on page 23
•"LAN port indicator codes" on page 23

14 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual May 16, 2016
Chapter 1 Product Description
Overview Description
The T2 is a multi-channel video disk recorder that allows simultaneous record and
playback of media stored on internal data drives. The T2 features a single record
channel (R1) and 2 play channels (P1/P2). Hours of storage depends on the video
compression settings selected.
The T2 includes a built in disk recorder application that tasks -record, edit, play, and
create/play Playlists. The front panel includes the touch screen LCD and transport
controls to allow easy operation with minimal external connections.
Refer to the T2 User Manual for other high-level descriptions of features, controls,
and applications.

May 16, 2016 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual 15
System Description
System Description
The T2 is a video disk recorder based an a standard Windows computer with extensive
enhancements.
This section explains the major architectural blocks.
SATA
SATA
Port #1
Port #2
Port #3
Port #4
SATA
Card
CPU Board
Riser Card
GPIO
Board
XLR
Board
Input
Board
Codec Subsystem
PC Subsystem
Front Subsystem
Output
Board
Output
Board
USB 2.0
USB 2.0
USB 3.0
Card
Interconnect
Board
Media Card
Reader Assy
HDD/SSD
(for the data)
(Partition V:)
HDD
(for the data)
(Partition V:)
SATA#0
SATA#1
SATA#2
SATA#3
SATA#4
Removable
SSD Bay
UFD for recovery
SSD
(for the system)
(Partition C: D:)
PCI Express Bus
Touchscreen,
Button kit,
JOG, Shuttle
From GPIO
Board
Keyboard
Mouse
PC monitor
Frontpanel
Controller
Board
LCD
Interconnect
Board
Power switch,
Power LED,
Headphone jack,
Volume control,
USB 2.0
LAN port
*T2 Pro 2/Pro 2 only
*T2 Elite/Pro/Express only
*T2 Elite 2 only
*T2 Elite 2/Pro 2/Express 2 only

16 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual May 16, 2016
Chapter 1 Product Description
PC Subsystem
The PC subsystem is intended to run application software running on top of a
Windows OS.
This subsystem includes the following components:
• Mechanical Chassis
• Industry micro ATX motherboard
• Core i7 class processor
•4GB DDR 3 memory
• 2 LAN ports
• 8 rear panel / 2 front panel accessible USB 2.0 ports
• SATA ports (6 on the motherboard, 2 on the SATA card)
• Monitor ports (VGA/DVI-D)
• Power supply unit
• Windows 7 Embedded (64 bit)
• USB 3.0 ports (1 rear panel , 2 front panel) (T2 Elite 2/Pro 2/Express 2 only)
Codec Subsystem
Codec Subsystem is composed of one Input board, two Output boards, and one GPIO
board. It is connected to the motherboard via the riser card. These boards are
interconnected. For example, the Input/Output boards process the command from the
GPIO board, and synchronize the clocks on Output boards.
Codec Subsystem includes the following components:
• Riser card
The riser card just bridges PCI express bus and passes communication signals
between boards.
• Input board
This board provides the video input and is responsible for encoding Grass
Valley HQ.
• Output board
This board provides the video output.
•GPIOboard
This board has the GPIO interface, analog audio interface, and reference input.
•RS422

May 16, 2016 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual 17
System Description
Front Subsystem
The front subsystem provides user interfaces such as LCD, touch screen, JOG/Shuttle
switch and control buttons.
This subsystem includes the following components:
• Interconnect board
The interconnect board interconnects power switch, power LED, headphone
jack, volume dial, two USB 2.0 ports.
• Frontpanel Controller board
This board has USB-interface, adjusts LCD backlight/illuminated buttons, and
detects the touch screen/illuminated buttons/rotary encoder.
XLR board
The XLR board provides XLR audio connectors.
Fuse board
It provides power to each module from the power supply unit.

18 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual May 16, 2016
Chapter 1 Product Description
T2 orientation
FRU locations (T2 Elite/Pro/Express)
The following illustration shows the location of Field Replaceable Units (FRUs) and
other components in the T2.
(1)
(2)
(3)
(11)
(12)
(13)
(20)
(21)
(10)
(8)
(9)
(7)
(16) (18)(19)
(14)
(15)
(4)
(5)
(6)
(17)
(1) Top cover (front)
(2) Top cover (rear)
(3) SATA card unit
*Placed under the I/O board unit.
(4) I/O board unit
(5) Center fan (80 mm)
(6) SSD (for the system)
(7) 2.5 inch removable SSD bay
(8) Front USB group unit
(9) Recovery UFD (USB Flash Drive)
*Mounted on the front USB group unit
(10) Rear fan (60 mm)
(11) XLR×6 unit
(12) Power supply unit
(13) Center fan (92 mm)
(14) HDD / SSD (for data)
(15) Front panel
(16) Button kit
(17) Touch screen LCD
(18) JOG knob
(19) Shuttle knob
(20) Memory (RAM)
(21) Fuse board unit
Top view

May 16, 2016 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual 19
T2 orientation
FRU locations (T2 Elite 2/Pro 2/Express 2)
The following illustration shows the location of Field Replaceable Units (FRUs) and
other components in the T2.
(1)
(2)
(3)
(12)
(13)
(14)
(21)
(22)
(25)
(11)
(9)
(10)
(7)
(17) (19)(20)
(15)
(16)
(23)
(24)
(8)
(4)
(5)
(6)
(18)
(1) Top cover (front)
(2) Top cover (rear)
(3) PCI-e USB 3.0 card
*Placed under the I/O board unit.
(4) I/O board unit
(5) Center fan (80 mm)
(6) SSD (for the system)
(7) Front USB 3.0 board
(8) Media Card Reader Assy
(T2 Elite 2 only)
(9) Front USB group unit
(10) Recovery UFD
(USB Flash Drive)
*Mounted on the front USB
group unit.
(11) Rear fan (60 mm)
(12) XLR×6 unit
(13) Power supply unit
(14) Center fan (92 mm)
(15) HDD / SSD (for data)
(16) Front panel
(17) Button kit
(18) Touch screen LCD
(19) JOG knob
(20) Shuttle knob
(21) Memory (RAM)
(22) Fuse board unit
(23) USB 3.0 cable (T2 Elite 2 only)
(24) USB 3.0 cable ×3
(25) Rear USB 3.0 port
Top view

20 T2 Elite 2/Pro 2/Express 2/Elite/Pro/Express Service Manual May 16, 2016
Chapter 1 Product Description
FRU functional descriptions
The Field Replaceable Units (FRUs) described in this section are as follows:
For procedures, refer to "Removing and Replacing FRUs" on page 89.
Touch screen LCD
On the touch screen LCD, touch the screen displayed on the LCD to perform
operations in T2.
Refer to "Touch screen LCD removal" on page 113 for procedures.
JOG/Shuttle knob
The multi-function knob provides control for JOG, shuttle and variable speed play.
Refer to "Jog knob removal" on page 109 and "Shuttle knob removal" on page 109 for
procedures.
Button kit
Button kit consists of control buttons and Frontpanel Controller board.
Control buttons are provided for transport controls, edit controls, display controls, and
JOG/shuttle controls and a variable speed play control.
Refer to "Button kit removal" on page 116 for procedures.
Front USB group unit
Front USB unit provides an Interconnect board, a power switch, a power on indicator,
a headphone jack, volume control, two USB 2.0 port.
Refer to "Front USB group unit removal" on page 110 for procedures.
Recovery UFD (USB Flash Drive)
The recovery UFD contains recovery data to be restored to the factory default
condition.
For replacement instructions, refer to "Recovery UFD (USB Flash Drive) removal"
on page 112.
Fan (Center/Rear)
The fan module provides cooling for the T2 chassis.
Refer to "Center fan (92 mm) removal" on page 123, "Center fan (80 mm) removal"
on page 125 and "Rear fan (60 mm) removal" on page 126 for procedures.
Power supply unit
Power supply has a fan with automatic speed control. The power supply unit has
protection for over voltage, over current, over temperature, and short circuits.
Refer to "Power supply unit removal" on page 136 for procedures.