Tektronix 7B15 Instruction Manual page 8

Refer also to the preceding Operators Safety Summary
The following are safety precautions which appear in the servicing information sections of this manual . This Servicing
Safety Summary is in addition to the Operators Safety Summary given previously.
DO NOT SERVICE ALONE
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FOR QUALIFIED SERVICE PERSONNEL ONLY
Do not attempt internal service or adjustment unless another person, capable of rendering first aid and
resuscitation, is present.
DISCONNECT INSTRUMENT POWER
To avoid electric-shock disconnect the instrument from the power source before removing protective panels,
soldering, or replacing components .
SILICONE GREASE HANDLING
Handle silicone grease with care . Avoid getting the silicone grease in your eyes . Wash hands thoroughly after
use.
AVOID EXCESSIVE MOISTURE
Circuit boards and components must be dry before applying power to prevent damage from electrical arcing.
EXERCISE CARE WHEN CHECKING DIODES
When checking diodes, do not use an ohmmeter scale that has a high internal current, since high currents
may damage the diodes under test.
EXERCISE CARE WHEN SOLDERING ON MULTI-LAYER BOARDS
All but the Readout circuit board in the instrument are mufti-layer type boards with a conductive path
laminated between the top and bottom board layers. All soldering on these boards should be done with
extreme care to prevent breaking the connections to this center conductor. Only experienced maintenance
personnel should attempt repair of these boards .
USE PROPER CLEANING AGENTS
Avoid the use of chemical cleaning agents which might damage the plastics used in this instrument . Use a
non-residue type of cleaner, preferably isopropyl alcohol, totally denatured ethyl alcohol, or Freon TF Before
using any other type of cleaner, consult your Tektronix Service Center or representative .
DO NOT USE PIN SOCKETS FOR CONNECTION POINTS
The spring tension of the pin sockets ensures a good connection between the circuit board and the pin. This
spring tension can be destroyed by using the pin sockets as a connecting point for spring-loaded probe tips,
alligator clips, etc.
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