Tektronix WFM601, Service Manual

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Maintenance
6–20
WFM 601 - Service Manual
2. Use the screwdriver tip to push out on the inside of the center of the small
panel located immediately below the CRT. This exposes the two bezel
mounting screws.
NOTE
. All screws, unless otherwise noted, are TORX screws and can be removed
with a T15 screwdriver tip (Tektronix part number 003-0966-00). The exception
is #2 Pozidrive screws which can be removed with a #1 Pozidrive tip (Tektronix
part number 003-0443-00).
3. Remove the two bezel screws.
4. 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.
5. To replace, reverse the procedure, pushing in on the small panel instead of
out.
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).
Replacement bulbs are supplied with this instrument as Standard Accessories.
Additional bulbs can be purchased from Tektronix (see Replaceable Electrical
Parts list) or from local electronics distribution sources.
CAUTION.
Needle-nosed pliers are not recommended for bulb replacement.
Procedure
1. Remove the bezel according to the preceding instructions.
2. To remove a bulb, position the tweezer tips or grasp the thin, flat portion of
the bulb (close to the plastic socket). Carefully pull the bulb straight out.
See Figure 6–5.
Graticule Light Removal
and Replacement