Repackaging For Shipment; Selectable Components - Tektronix 2215A Instruction Manual

Maintenance— 2215A Service
27. Reconnect P9001 and P9002 to the Main circuit
board (removed in step 8).
28. Insert the POWER switch extension-shaft assembly
into the front panel (from the rear). Push the POWER switch
to the ON lock position and align the extension shaft with
the switch shaft. Press them together gently until they snap
into place.
29. Reinstall the FOCUS control shaft assembly (re­
moved in step 6).
30. Reconnect the connectors to the Attenuator and
Timing circuit boards (removed in step 5).
31. Resolder five wires from the Filter circuit board to
the Main circuit board (unsoldered in step 4).
32. Reinstall the Power-Supply shield and plastic power-
supply cover (see " Power-Supply Shield" reinstallation
procedure).
33. Reinstall the Alt Sweep circuit board (see "Alt
Sweep Circuit Board" reinstallation procedure).
34. Reconnect the B DELAY TIME POSITION poten­
tiometer connector (P9644) to the Main circuit board
(disconnected in step 1).

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
6-20
that can be contacted. Include complete instrument serial
number and a description of the service required.
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 ship­
ping tape or industrial stapler.

SELECTABLE COMPONENTS

If desired, the trigger-system bandwidth of the oscillo­
scope may be reduced from the normal 10 MHz to frequen­
cies shown in Table 6-6. To alter the bandwidth, remove
C419 (component number A1C419 on Diagram 3) from the
Main Circuit Board using the steps in the "Soldering Tech­
niques" part of the "Maintenance" section. The capacitor
should be replaced with a non-polarized type such as a disc-
ceramic or equivalent.
Table 6-6
Trigger Bandwidth Alteration
Trigger
Bandwidth
10 MHz
5 MHz
1 MHz
50 kHz
10 kHz
Capacitor
Value
390 pF
750 pF
3300 pF
nF
0.068
nF
0.33