Maintenance
Display Module
You will need a t
orque-limiting Torx T-15 screwdriver, a torque-limiting Torx
T-8 screwdriver, and pliers for this procedure.
Refer to the ex
ploded view diagram for the 2-channel or the 4-channel models.
(See page 8-3.) (See page 8-6.)
CAUTION. Do not separate the display shield from the display module. Removing
the shield will destroy the attaching gasket.
Removal.
1. Remove th
e power button and rear case. (See page 6-10, Rear Case.)
2. Remove the internal a ssembly from t he front case. (See pag e 6-13, Internal
Assembl
y.)
3. Disconnect the display backlight wire cable from the Main board.(See
page 6-
17.)
4. Disconnect the display ribbon cable from the Main board.
(See page 6-17.)
5. Remove the power supply module. (See page 6-12, Power Supply Module.)
6. Remove the four screws attaching the display module to the chassis. The
screws were exposed when the power supply module was removed.
7. Remove the display from the chassis. Handle this assem b ly carefully.
Installation.
1. Position the D isplay module o n the chassis.
2. Use the Torx T-8 screwdriver and install the four screws to attach the display
module to the chassis. Torque the nuts to 3 in-lbs (0.33 N@ m ) using the
torque wrench (2.864 ±0.26 in-lbs).
3. Route the backlight and display cables through the appropriate openings in
the internal assembly. (See page 6-17.)
4. Connect the backlight wire cable to the Main board (J1502 for 2 Ch, J2001
for 4 Ch).
5. Connect the display ribbon cable to the Main board (J1501 for 2 Ch, J2002
for 4 Ch).
6. Assemble the oscilloscope by p erforming the installation procedure in reverse
order for each module that was removed.
TBS1000 Series Oscilloscope Service Manual 6–19
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