Tektronix 070-8462-03, Instruction Manual

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Corrective Maintenance
1735 HD High Definition Waveform Monitor
7–13
2. Grasping the bottom of the bezel, pull straight out and upward. There are
two hinges at the top of the bezel that hold it in place; once the bezel is at an
approximate 45 angle with the front panel, they will disengage.
For graticule light removal and replacement, tweezers with curved, serrated tips
are recommended. For example, Miltex PL312,6–100 (equivalent to PL312) or
PL317 (longer than PL312).
CAUTION. Needle-nosed pliers are not recommended.
Replacement bulbs are supplied with this instrument as Standard Accessories.
Additional bulbs can be purchased from Tektronix (see Replaceable Electrical
Parts) or from local electronics distribution sources.
1. Remove the bezel according to the preceding instructions.
2. To remove a bulb, position the tweezer tips on the thin, flat portion of the
bulb (close to the plastic socket). Carefully pull the bulb straight out.
3. To install a bulb, hold it with the tweezers as described in step 2, position it
in front of the socket, and push the bulb until it snaps into place.
4. Replace the bezel.
WARNING.
The CRT is a high vacuum device and must be handled with care.
Safety glasses, gloves, and protective clothing should always be worn when
handling CRTs.
1. Remove the bezel.
2. Disconnect the Trace Rotation connector, J4, from the Control board (A4).
3. Disconnect all four deflection leads (red, green, blue, and brown) from the
CRT.
WARNING.
The CRT may retain a dangerous charge. Ground the conductor of the
anode to discharge the CRT. Do not allow the conductor to touch your body or
any circuitry.
4. With one hand, grasp the CRT just behind the anode cap. Push the CRT out
far enough to allow access to the anode connector (some pressure is needed).
Graticule Light Tools
Graticule Light
Replacement Procedure
Removing the CRT