Tektronix 2215A User Manual

Filter Circuit Board
To remove the Filter circuit board, perform the following
steps:
1. Remove the Power-Supply shield (see the "Power-
Supply Shield” removal procedure).
2. Remove the five wires to the Filter circuit board by
unsoldering two wires from the Main circuit board, two from
the line filter, and one wire from the fuse holder (pull the
protective cap completely off the fuse holder before
unsoldering).
3. Remove two screws securing the Filter circuit board
to the back of the chassis frame. Lift the Filter circuit board
out of the instrument.
To reinstall the Filter circuit board, perform the following
steps:
4. Reinstall two screws securing the Filter circuit board
to the back of the chassis frame (removed in step 3).
5. Resolder the five wires from the Filter circuit board to
the Main circuit board, line filter, and fuse holder (unsoldered
in step 2).
6. Reinstall the Power-Supply shield (see the “Power-
Supply Shield” reinstallation procedure).
Alt Sweep Circuit Board
To remove the Alt Sweep circuit board, perform the fol
lowing steps:
1. Use a vacuum-desoldering tool to unsolder the 27
pins (between the Alt Sweep circuit board and the Main cir
cuit board) from the Main circuit board.
2. Remove the Alt Sweep circuit board from the instru
ment by unclipping it from the plastic holder attached to the
Power-Supply shield.
To reinstall the Alt Sweep circuit board, perform the fol
lowing steps:
3. Insert the 27 pins of the Alt Sweep circuit board into
the Main circuit board.
4. Reinstall the Alt Sweep circuit board into the plastic
holder attached to the Power-Supply shield.
Maintenance— 2215A Service
5. Resolder the 27 pins to the Main circuit board (unsol
dered in step 1).
Attenuator Circuit Board
To remove the Attenuator circuit board, perform the fol
lowing steps:
1. Use a 1/16-inch Hex-key wrench to loosen the set
screws on both the CH 1 and the CH 2 VOLTS/DIV Variable
knobs and remove the knobs.
2. Set the CH 1 and the CH 2 VOLTS/DIV switches to
the same position. Note switch positions for reinstallation
reference; then remove the knobs by pulling them straight
out from the front panel.
3. Place the instrument on its side and unsolder the re
sistors from the CH 1 and CH 2 input connectors.
4. Remove two screws securing the Attenuator board to
the subpanel (located underneath the CH 1 and CH 2 input
connectors).
5. Remove the following connectors from the Attenuator
circuit board, noting their locations for reinstallation
reference:
a. P9103, a four-wire connector located behind the CH 1
VOLTS/DIV switch assembly.
b. P9108, a four-wire connector located behind the CH 2
VOLTS/DIV switch assembly.
c. P9091, a three-wire connector located between the
Channel 1 and Channel 2 Variable potentiometers at
the rear of the Attenuator circuit board.
6. Remove four screws securing the Top shield to both
the Attenuator circuit board and the bottom shield.
7. Remove two screws and the ground strap from the
rear of the Attenuator circuit board.
8. Pull the Attenuator board straight back from the front
of the instrument until the circuit board interconnecting pins
are disengaged and the switch shafts are clear of both the
Front-Panel circuit board and the two Input Coupling switch
shafts (located between the front-panel and the subpanel.
6 -1 5

Tektronix 2215A Specifications

General

Brand	Tektronix
Model	2215A
Category	Test Equipment
Language	English