Tektronix 2213 Instruction Manual page 103

Maintenance— 2213 Service
27. Reinstall the High-Voltage shield (see the "High-
Voltage Shield" reinstallation procedure).
28. Reconnect the
connector (P7055) to the Main circuit board (located in front
of the High-Voltage shield).
29. Reinstall the Attenuator/Sweep circuit board (see
the "Attenuator/Sweep
procedure).
NOTE
The instrument has either the Current Limit board
(A19) or the Preregulator board (A18) installed. Use
the appropriate board-removal procedure for your
particular instrument.
Current Limit Circuit Board
To remove the Current Limit board, perform the following
steps:
1. Remove the High-Voltage shield (see the "High-
Voltage Shield" removal procedure).
2. Disconnect the four single-wire connectors from the
Current Limit board (P801, P802, P803, and P804).
3. Remove the screw and nut which secure the Current
Limit board to the chassis frame.
To reinstall the Current Limit board, perform the following
steps:
4. Reinstall the securing screw and nut (removed in step
3).
5. Reconnect the four single-wire connectors (removed
in step 2).
6. Reinstall the High-Voltage shield (see the "High-
Voltage Shield" reinstallation procedure).
Preregulator Circuit Board
To remove the Preregulator circuit board, perform the
following steps:
1. Remove the High-Voltage shield (see the "High-
Voltage Shield" removal procedure).
2. Remove two screws securing the Preregulator board
mounting brackets (one at the rear-top of the frame and one
on the right side near the back comer of the frame).
6 -1 8
MULTIPLIER potentiometer
Circuit Board" reinstallation
3. Remove the securing screw through the access hole
of the clear plastic shield from the top of the Preregulator
board at the front-right corner.
4. Disconnect four wire connectors from the Pre­
regulator board and note their positions for reinstallation
reference.
To reinstall the Preregulator board, perform the following
steps:
NOTE
Check for sufficient silicon grease and proper
positioning o f the insulator in the plastic holder
housing Q933.
5. Reconnect two wire connectors (P803 and P804) to
the front edge of the Preregulator board at the positions
noted in step 4. Then position the board into the instrument
frame.
6. Reconnect two wire conncetors (P801 and P802) to
the left edge of the Preregulator board at the positions
noted in step 4.
7. Reinstall the securing screw at the top of the
Preregulator board (removed in step 3).
8. Reinstall the two bracket screws (removed in step 2).
9. Reinstall the High-Voltage shield (see the "High-
Voltage Shield" reinstallation procedure).
REPACKAGING FOR SHIPMENT
If the instrument is to be shipped to a Tektronix Service
Center for service or repair, attach a tag showing: owner
(with address) and the name of an individual at your firm
that can be contacted. Include complete instrument serial
number and a description of the service required. Listings of
Tektronix Sales and Service offices, both domestic and
international, are located at the back of the manual following
the tabbed "Accessories" page.
Save and reuse the package in which your instrument
was shipped. If the original packaging is unfit for use or not
available, repackage the instrument as follows:
Surround the instrument with polyethylene sheeting to
protect its finish. Obtain a carton of corrugated cardboard
having a carton test strength of 275 pounds and having
inside dimensions of no less than six inches more than the
instrument dimensions. Cushion the instrument by tightly
packing three inches of dunnage or urethane foam between
carton and instrument, on all sides. Seal carton with
shipping tape or industrial stapler.
REV NOV 1982