Table 7: External Inspection Checklist; Table 8: Internal Inspection Checklist - Tektronix SPG8000 Service Manual

SPG8000 Master Sync / Clock Reference Generator Service Manual
Inspection – exterior. Inspect the outside of the instrument for damage, wear, and
missing parts, using the following table as a guide. Immediately repair defects
that could cause personal injury or lead to further damage to the instrument.

Table 7: External inspection checklist

Item
Cabinet, front panel, and
cover
Front-panel knobs
Connectors
Carrying handle and cabinet
feet
Accessories
LCD
Inspection – interior. To access the inside of the instrument for inspection and
cleaning, you will need to remove the top cover.
Inspect the internal portions of the instrument for damage and wear, using Table
4-2 as a guide. Defects found should be repaired immediately.
If any circuit board is repaired or replaced, see if it is necessary to adjust the
instrument. (See Table 8 on page 37.)
CAUTION. To prevent damage from electrical arcing, make sure that circuit
boards and components are dry before applying power to the instrument.

Table 8: Internal inspection checklist

Item
Circuit boards
Resistors
Inspect for
Cracks, scratches,
deformations, damaged
hardware
Missing, damaged, or loose
knobs
Broken shells, cracked
insulation, and deformed
contacts. Dirt in connectors
Correct operation
Missing items or parts of
items, bent pins, broken or
frayed cables, and damaged
connectors
Cracks
Dirty
Inspect for
Loose, broken, or corroded
solder connections.
Burned circuit boards.
Burned, broken, or cracked
circuit-run plating.
Burned, cracked, broken,
blistered condition.
Maintenance
Repair action
Repair or replace defective
module
Repair or replace missing or
defective knobs
Repair or replace defective
modules. Clear or wash out
dirt
Repair or replace defective
part
Repair or replace damaged
or missing items, frayed
cables, and defective
modules
Replace the LCD assembly
Clean with glass cleaner
Repair action
Remove and replace
damaged circuit board.
Remove and replace
damaged circuit board.
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