Table 5-2: Internal Inspection Check List - Tektronix RTX100A Service Manual

RTX100A ISDB-T RF Signal Generator Service Manual
Inspection — Interior. To access the inside of the RTX100A for inspection and
cleaning, refer to the Removal and Installation Procedures in this section.
Inspect the internal portions of the RTX100A for damage and wear, using
Table 5-2 as a guide. Defects found should be repaired immediately.
CAUTION. To prevent damage from electrical arcing, ensure that circuit boards
and components are dry before applying power to the RTX100A.

Table 5-2: Internal inspection check list

Item Inspect for
Circuit boards Loose, broken, or corroded
solder connections. Burned
circuit boards. Burned, broken, or
cracked circuit-run plating.
Resistors Burned, cracked, broken, blis-
tered condition.
Solder connections Cold solder or rosin joints.
Capacitors Damaged or leaking cases.
Corroded solder on leads or
terminals.
Semiconductors Loosely inserted in sockets.
Distorted pins.
Wiring and cables Loose plugs or connectors.
Burned, broken, or frayed wiring.
Chassis Dents, deformations, and dam-
aged hardware.
Maintenance
Repair action
Remove failed module and
replace with a fresh module.
Remove failed module and
replace with a fresh module.
Resolder joint and clean with
isopropyl alcohol.
Remove damaged module and
replace with a fresh module from
the factory.
Firmly seat loose semiconduc-
tors. Remove devices that have
distorted pins. Carefully straight-
en pins (as required to fit the
socket), using long-nose pliers,
and reinsert firmly. Ensure that
straightening action does not
crack pins, causing them to
break off.
Firmly seat connectors. Repair or
replace modules with defective
wires or cables.
Straighten, repair, or replace
defective hardware.
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