Tektronix 7834

CRT Handling
Use care when handling a crt . Breakage
of the crt causes a high-velocity scattering of
glass fragments (implosion) . Protective
clothing and safety glasses should be
worn . Avoid striking the crt onany object
which might cause it to crack or imp/ode .
When storing a crt place it in a protective
carton or set it face down in a
protected location ona smooth surface with a
soft
mat under the faceplate .
Avoid Excessive Moisture
Circuit
boards and components must be dry before
applying power to prevent damage from electrical
arcing .
Exercise Care When Checking
Diodes
7834 Instruction
When checking diodes, do not use an ohm-meter
scale that has a high internal current, since
high currents may damage the
diodes
under test .
Exercise Care
When Soldering on Multi-Layer
Boards
Several of the circuit boards in the 7834 are
multi-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
: A3-Main Interface,
A6-Logic, A7-Trigger Amplifier,
A8-Vertical Interface, A 14-Cap-Rectifier, and
A25-Storage circuit board .
Exercise Care
When Handling CRT Anode
Lead
Do
not touch any components with the
crt anode lead until it is fully discharged .
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, total/y denatured ethyl alcohol, or TP35 .
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 .