Maintenance
Keypad
You will need a t
orque-limiting Torx T-15 screwdriver for this procedure.
Refer to the exploded view diagram for the 2-channel models or the 4-channel
models. (See p
age 8-3.) (See Figure 8-2.)
Removal.
1. Remove the p
ower 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
Assembly.
)
3. Lift the keypad switch out of the front case.
CAUTION.
Keep the electrical contacts on the back of the keypad clean. Skin oils
and dust inhibit good electrical contact.
Install
ation.
1. Place the front case face down on a soft su rface (such as an anti-static mat).
2. Align the switch keypad into the front case using the guide posts and the
holes in the keypad.
CAUTION. Keep the electrical contacts on the back of the switch keypad clean.
Skin
oils and dust inhibit good electrical contact.
3. Check that all b uttons are properly seated before proceeding.
4. Assemble the oscilloscope by p erforming the installation procedure in reverse
order for each module that was removed.
TBS1000 Series Oscilloscope Service Manual 6–21
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