Instructions
050-3642-00 and Above
TPS2000 Series Oscilloscopes
Backlight Inverter Board Replacement Kit
075-0934-00
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
www.tektronix.com
*P075093400*
075093400
Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or
suppliers, and are protected by national copyright laws and international treaty provisions.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price c hange privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc .
Tektronix is an authorized licensee of the CompactFlashr tademark.
Contacting Tektronix
Tektronix, Inc.
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
H In North America, call 1-800-833-9200.
H Worldwide, visit www.tektronix.com to find contacts in your area.
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it.
Only qualified personnel should perform service procedures.
Injury Precautions
Use Proper Power Cord. To avoid fire hazard, use only the power cord specified
for this product.
Avoid Electric Overload. To avoid electric shock or fire hazard, do not apply a
voltage to a terminal that is outside the range specified for that terminal.
Avoid Overvoltage. To avoid electric shock or fire hazard, do not apply potential
to any terminal, including the common terminal, that varies from ground by more
than the maximum rating for that terminal.
Avoid Electric Shock. To avoid injury or loss of life, do not connect or disconnect
probes or test leads while they are connected to a voltage source.
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.
Connect the Probe Properly. The probe ground lead is at ground potential. Do not
connect the ground lead to an elevated voltage.
Do Not Operate Without Covers. To avoid electric shock or fire hazard, do not
operate this product with covers or panels removed.
Use Proper Fuse. To avoid fire hazard, use only the fuse type and rating specified
for this product.
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.
Product Damage
Precautions
TPS2000 Series Backlight Inverter Board Replacement Kit
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.
i
General Safety Summary
Symbols and Terms
Terms in this Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
Terms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an 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
Earth Terminal
ATTENTION
Refer to Manual
Double
Insulated
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TPS2000 Series Backlight Inverter Board Replacement Kit
Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
Do Not Service Alone. Do not perform internal service or adjustments 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, remove battery (if applicable), and
disconnect test leads before removing protective panels, soldering, or replacing
components.
To aviod electrical shock, do not touch conductive parts.
TPS2000 Series Backlight Inverter Board Replacement Kit
iii
Service Safety Summary
iv
TPS2000 Series Backlight Inverter Board Replacement Kit
Kit Description
The Backlight Inverter Board (Tektronix part number 119-7259-00) in this kit
replaces the Backlight Inverter Board 119--6930-00 which is no longer available.
This document is supported by Tektronix modification ECR30899.
Products
TPS2012
TPS2014
TPS2024
Minimum Tool and Equipment List
Required tools and equipment Part number
Torx ® T-15 torque-limiting screwdriver,
long shank
Standard tool
Kit Parts List
Needle-nose pliers Standard tool
Circuit/figure
number
-- -- -- -- -- 1EA 119-7259-00 Inverter board, DC--to--AC Inverter, Connector
Quantity Part number Description
type, Dimming type, 4W, 1 bulb
TPS2000 Series Backlight Inverter Board Replacement Kit
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Kit Description
2
TPS2000 Series Backlight Inverter Board Replacement Kit
Installation Instructions
These instructions are for personnel who are familiar with servicing the product.
If you need further details for disassembling or reassembling the product, refer to
the appropriate product manual. Contact your nearest Tektronix, Inc., Service
Center or Tektronix Factory Service for installation assistance.
CAUTION. To prevent static discharge damage, service the product only in a
static-free environment. Observe standard handling precautions for static-sensitive devices while installing this kit. Always wear a grounded wrist strap,
grounded foot strap, and static resistant apparel while installing this kit.
Remove, Install, and Reassemble
You need to remove the Rear Case before you can access the Backlight Inverter
board.
Remove the Rear Case
You will need a torque-limiting Torx T-15 screwdriver for this procedure. To
remove the rear case, refer to Figure 1 and follow these steps:
1. Open the battery door and remove the batteries.
2. Place the oscilloscope face down on a soft surface, such as an anti-static mat.
3. Remove the five screws that secure the rear case to the chassis. Tilt the
handle to gain better access to the top two screws.
4. Lift up and remove the rear case from the oscilloscope chassis.
TPS2000 Series Backlight Inverter Board Replacement Kit
3
Installation Instructions
Rear case screws (5)
Rear case
Figure 1: Removing and installing the rear case
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TPS2000 Series Backlight Inverter Board Replacement Kit
Installation Instructions
Remove the Backlight
Inverter Board
You will need needle-nose pliers for this procedure. To remove the Backlight
Inverter board, refer to Figure 2 and follow these steps:
1. Remove the rear case. Follow the procedure on page
3.
2. Disconnect the display inverter cable from the Backlight Inverter board.
3. Disconnect the LCD inverter cable from the Backlight Inverter board.
4. Use the needle-nose pliers to carefully bend the two chassis-mounting tabs
out of the way. Do not to bend the tabs more than needed.
5. Remove the Backlight Inverter board.
I/O
Tab
connector
Tab
Display
connector
Be careful not to bend the
tab more than needed.
Backlight
Inverter board
Tab
Figure 2: Removing and installing the Backlight Inverter board
Tab
TPS2000 Series Backlight Inverter Board Replacement Kit
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Installation Instructions
Install the New Backlight
Inverter Board
Install the Rear Case
To install the new Backlight Inverter board, refer to Figure 2 and follow these
steps:
1. Align the new Backlight Inverter board with the chassis-mounting tabs.
2. Use the needle-nose pliers to carefully bend the tabs into place to secure the
board.
3. Connect the LCD inverter cable to the Backlight Inverter board.
4. Connect the display inverter cable to the Backlight Inverter board.
5. Install the rear case.
You will need a torque-limiting Torx T-15 screwdriver for this procedure. To
install the rear case, refer to Figure 1 and follow these steps:
1. Place the oscilloscope face down on a soft surface.
2. Ensure that all cables are routed within the internal chassis area.
3. Place the rear case over the assembled oscilloscope and ensure that:
H All edges align with the chassis.
H The RS-232, printer, and power connectors align and feed through the
rear case without binding.
4. Use a torque-limiting Torx T--15 screwdriver to install the five screws to
secure the rear case. Torque the screws to 8 in⋅lbs (.85 N⋅m). Tilt the handle
to better access the top two holes.
5. Install the batteries.
CAUTION. Avoid cross threading the screws that attach the rear case to the front
case. An easy way to avoid this is to slip the screw into the hole and, using slight
pressure, slowly rotate the screw counterclockwise until you feel the screw slip
into the screw threads. Then tighten the screw clockwise. A properly started
screw will have very little resistance going in.
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TPS2000 Series Backlight Inverter Board Replacement Kit
Upgrade the Firmware
Installation Instructions
The installation of the new Backlight Inverter board requires that you upgrade
the TPS2000 series firmware. To upgrade the firmware, follow these steps:
1. Install a CompactFlash card into the CompactFlash reader on to your PC.
2. Open up a Web browser and go to www.tektronix.com/software. Use the
Software and Firmware Finder to locate the most recent firmware upgrade.
3. To download the firmware to your CompactFlash card, press the Download
button on the TPS2000 Instrument Firmware page and follow the on-screen
instructions.
4. Unzip the downloaded file and save the file “TPS2000.TEK.”
5. Once the file is saved to your CompactFlash card, insert the CompactFlash
card in your TPS2000 oscilloscope and power up the oscilloscope.
6. To update the firmware, push the UTILITY button on your oscilloscope.
Then push the File Utilities bezel button, the -- m o r e -- bezel button, the
Update Firmware bezel button, and finally the Update Firmware bezel
button again.
Verify Operation
7. Your oscilloscope will reboot and the firmware update begins automatically.
The update will take about five minutes.
Do not remove the CompactFlash card or power off the oscilloscope during
the update.
8. At the end of the update process, the oscilloscope will display a message that
the firmware update was successful. Press the OK bezel button to remove
the message and return to the prior state of the oscilloscope.
Refer to the TPS2000 series user manual and perform the Functional Check
procedure.
This completes the Backlight Inverter board replacement.
g End of document g
TPS2000 Series Backlight Inverter Board Replacement Kit
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