Maintenance
1720/1721
6–15
5. Turn off POWER. This ends the Diagnostic Procedure. When the
1720/1721 is powered up again it will be operating in the normal vector-
scope configuration.
Corrective Maintenance
NOTE. Solder:
A 2% RMA flux content solder is recommended for making repairs in this
instrument. Cleaning of rosin residue is not recommended. Most cleaning
solvents tend to reactivate the rosin and spread it under components where it
may cause corrosion under humid conditions. The rosin residue, if left alone,
does not exhibit these corrosive properties.
NOTE. Warranty Repairs:
No repair should be attempted during the warranty period.
Replacement parts are available through the local Tektronix, Inc., field office or
representative. However, many common electronic parts are available through
local sources. Using a local source, where possible, will eliminate shipping
delays.
Changes to Tektronix instruments are sometimes made to accommodate
improved components, as they become available, and to improve circuit
performance. Therefore, it is important to include the following information
when ordering parts:
1. Part Number
2. Instrument Type or Number
3. Serial Number
4. Modification or Option Number (if applicable)
If a part has been replaced with a new or improved part, the new part will be
shipped if it is a direct replacement. If not directly replaceable the local
Tektronix field office or representative will contact the customer concerning any
changes. After any repair, circuit readjustment may be required.
Obtaining Replacement
Parts