Tektronix 2205 Service Manual

Maintenance—2205 Service
6. Pull the front panel and attached chassis
forward and out of the cabinet.
7. To reinstall the cabinet, perform the reverse of
the preceding steps. Ensure that the cabinet tab is
inserted in the rear-chassis slot, and the cabinet is
flush with the rear of the chassis.
8. Reinstall the rear panel. Ensure the rear
chassis tabs are inserted into the slots in the rear
panel properly (slots are located just above the bot
tom rear feet), and the screw holes in the rear
chassis and rear panel are properly aligned.
9. Reconnect the power cord and power-cord
securing clamp (if removed in step 1).
Cathode-Ray Tube
WARNING I
Use care when handling a erf. Breakage of
the ert may cause high-velocity scattering of
glass fragments (implosion). Protective
clothing and safety glasses should be worn.
Avoid striking the ert on any object which may
cause it to crack or implode. When storing a
ert, either place it in a protective carton or set
it face down on a smooth surface in a pro
tected location with a soft mat under the
m,i faceplate.
The ert can be removed and reinstalled as
follows:
1. Unsolder the Trace Rotation wires (J987)
from the Front-Panel circuit board (note the connec
tion locations and wire colors for reinstallation
reference).
2. Remove two front-panel screws that retain
the plastic ert frame and light filter to the front panel.
Remove the ert frame and light filter from the
instrument.
3. With the rear of the instrument facing you,
place the fingers of both hands over the front edge
of the front subpanel. Then, using both thumbs,
press forward gently on the ert funnel near the front
of the ert. When the ert base pins disengage from
the socket, remove the ert and the ert shield
through the instrument front panel. Place the eft in a
safe place until it is reinstalled. If the plastic ert
corner pads fall out, save them for reinstallation.
NOTE
When installing the ert into the instrument,
reinstall any loose plastic ert corner pads that
are out of place. Ensure alt ert pins are
straight and that the indexing keys on the ert
base, socket, and shield are aligned. Ensure
that the ground clip from the ert support
bracket makes contact only with the outside
of the ert shield.
To reinstall the ert, perform the reverse of the
preceding steps.
Power Transformer
The Power Transformer (T901) can be removed
and reinstalled as follows:
1. Remove the top Power Supply shield by per
forming the following instructions.
a. Rotate the instrument until the rear chassis
is facing you.
b. Using both hands, place the fingers under
neath and the thumbs on top of the Power Supply
shield.
c. Gently push the Power Supply shield
towards the rear chassis and at the same time
pull up on the shield until the tabs are clear of the
slots in the inner chassis.
d. Pull the Power Supply shield towards the
front of the instrument with a slight upward tilt
until the rear tabs are clear of the slots in the rear
chassis.
2. Disconnect P902, a seven-wire connector
from J902 on the Mains Input circuit board. Note the
orientation of the connector for proper reinstallation.
3. Remove the four nuts and lock washers from
the Power Transformer (inside the instrument) with
out removing the support screws (supporting the
transformer) from the rear panel. Note the physical
orientation of the Power Transformer.
4. Supporting the Transformer with one hand,
pull the four screws out until the transformer is free
(leaving the screws inside of the supports). Remove
the transformer and the four screws and supports
from the instrument.
To reinstall the Power Transformer, perform the
reverse of the preceding steps.
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Tektronix 2205 Specifications

General

Brand	Tektronix
Model	2205
Category	Test Equipment
Language	English