Instructions
050-3541-00 & 050-3542-00 and Above
Front-Panel Board Replacement
TDS7000 Series
075-0761-01
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.
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*P075076101*
075076101
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Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary in the product service manual
or the instruction manual.
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, switch off the instrument power, then
disconnect the power cord from the mains power.
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 avoid electric shock, do not touch exposed connections.
Front-Panel Board Replacement
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Service Safety Summary
2
Front-Panel Board Replacement
Kit Description
Use these instructions to replace the front-panel board on the products listed in
the Products section of these instructions.
This document supports Tektronix modification: BV4011, ECO30346
Products
TDS7104 B010100 -- B052705
TDS7054 B010100 -- B041315
TDS7404 B010100 -- B031125
TDS7254 B010100 -- B020355
Minimum Tool and Equipment List
Required tools and equipment Part number
Screwdriver handle 620-440
Kit Parts List
T-10 Torx tip 640-235
T-15 Torx tip 640-247
1
/8inch flat-bladed screwdriver Standard tool
#0 phillips screwdriver Standard tool
Angle-Tip Tweezers Standard tool
MA-800G Soldering Aid Standard tool
Quantity Part number Description
1 ea. 075-0761-xx KIT INSTRUCTIONS
1 ea. 679-5795-xx CKT BD SUBASSY, FRONT PANEL
1 ea. 260-2790-xx
1 ea. 260-2779-xx
1
Depending on your product type, you will receive either one or the other of the listed
keypad switch assemblies.
1
1
KEYPAD SWITCH ASSY; 050-3541-xx
KEYPAD SWITCH ASSY; 050-3542-xx
Front-Panel Board Replacement
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Kit Description
4
Front-Panel Board Replacement
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
Use the following procedures to gain access to the parts you will replace.
Front-Panel Knobs
1. Assemble equipment and locate modules to be removed.
2. Orient the instrument: Set the instrument so its bottom is down on the work
surface and its front is facing you.
3. Remove the knob(s): Grasp any knob you want to remove and pull it straight
out from the front panel
the knob and the front panel. Insert the angled-tip tweezers between the knob
and front panel and use them to remove the knob. See Figure 1.
1
/4inch to create some clearance between the base of
Front-Panel Board Replacement
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Installation Instructions
Figure 1: Knob removal
Trim
1. Locate module to be removed: Locate the Trim in Figure 2, page 7.
2. Remove the front-panel trim: Use Figure 2, page 7, as a guide.
a. To prevent the power button from falling out of the front-panel trim,
place a piece of tape over the button.
b. Grasp the trim ring by its top edge and pull toward you to detach the
three plastic snaps. (Alternatively, you can use a flat-bladed screwdriver
or other small prying tool to help you detach the snaps.)
c. Swing the bottom of the trim upward and off the front panel.
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Front-Panel Board Replacement
Front-panel trim
Installation Instructions
Figure 2: Trim removal
Front-Panel Assembly
Soldering aid
To remove the trim ring, slide the flat end
of a soldering aid into the side slot on the
trim ring. Press in, then lift up to hook it
underneath, then pry up.
1. Locate module to be removed: Locate the Front-panel assembly in
Figure3,onpage8.
2. Remove the Front-panel assembly: SeeFigure3,page8.
3. Orient the instrument: Set the instrument so its bottom is down on the work
surface and its front panel is facing you.
a. Remove the six T-15 Torxdrive screws that secure the Front-panel
assembly to the front chassis.
Front-Panel Board Replacement
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Installation Instructions
Disk support
tab (2)
b. Grasp the top of the front-panel assembly and pull forward to allow
access to the ribbon-cable connector on the front-panel board.
c. Use the1@8inch flat-bladed screwdriver to carefully lift the J1 cable
connector lock up to disconnect the J1 flex cable from the display
module assembly. See Figure 4, page 9. Note the connector’s pin 1
index mark and the black stripe on the cable for later reassembly.
d. Pull the front-panel assembly forward and remove from the instrument.
Chassis
slot (2)
J1 ribbon cable
Front-panel
assembly
Front panel square
opening (2)
T--15 Torxdrive
screw (6)
Figure 3: Front-panel assembly removal
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Front-Panel Board Replacement
Screwdriver
Installation Instructions
Black stripe
toward connector
Install
Front-Panel Board
Front-Panel Keypad
Figure 4: J1 flex cable connector removal
1. Locate module to be removed: Locate the Front-panel assembly in Figure 3,
page 8.
2. Remove the Front-panel board: See Figure 5, page 10.
a. Remove the eight T-15 Torxdrive screws that secure the front-panel
board to the front-panel assembly.
b. Pry the board up off the alignment studs. Place a flat bladed screwdriver
in the pry point access holes to pry the board up from the assembly.
c. Remove the board from the assembly.
Use the following procedure to install your new front-panel board and keypad.
Install the Front-panel keypad: SeeFigure5.
Front-Panel Board Replacement
1. Carefully align the keypad on the front-panel board.
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Installation Instructions
NOTE. Make sure the keypad is aligned properly on the Front-panel board.
2. Push on each of the keypad support guides to attach the keypad to the
front-panel board.
CAUTION. When removing or installing the keypad, make sure you do not touch
the switch contacts with your fingers. The oils in your fingers will degrade or
damage the switch contacts. To help prevent damage to the keypad use cotton
gloves when removing or installing the keyboard pad.
T-15 Torxdrive
Front-panel board
Keypad support
guide (12)
Keypad
screw (8)
Alignment
stud
Pry point
access hole
Pry point access hole
Figure 5: Front-panel board and keyboard assembly
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Front-Panel Board Replacement
Reassemble
Installation Instructions
Use the following procedure to reassemble your instrument:
1. To reinstall the front-panel board, do in reverse steps 2a through c of
Front-Panel Board on page 9.
NOTE. Make sure the ribbon cable is routed correctly when installing the front
panel into the chassis.
Insert the two disk support tabs into the front panel square openings. Both left
front-panel tabs must go into the chassis slots. See Figure 3, page 8.
2. To reinstall the front-panel assembly, do in reverse steps 3a through d of
Front-Panel Assembly on page 7.
3. To reinstall the trim, do in reverse step 2 of Trim on page 6.
CAUTION. To prevent damage to the encoders located on the circuit board, apply
pressure to the encoders while pushing the knob on the shaft.
4. To reinstall the front-panel knobs, align each knob to the shaft and push it in
until it snaps.
g End of document g
Front-Panel Board Replacement
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