Tektronix TBS1000C Series, Руководство по обслуживанию

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Table 1: External inspection checklist
Item Inspect for Repair action
Front and rear case Cracks, scratches, deformations,and
damaged hardware. Repair or replace defective module.
Front-panel knobs Missing, damaged, or loose knobs. Repair or replace missing or defective
knobs.
Connectors Broken shells, cracked insulation, and
deformed contacts. Dirt in connectors. Repair or replace defective modules. Clear
or wash out dirt.
Carrying handle, and cabinet feet Correct operation. Repair or replace defective module.
Accessories Missing items or parts of items,bent pins,
broken or frayed cables, and damaged
connectors. Repair or replace damaged or missing items,
frayed cables, and defective modules.
Interior inspection
To access the inside of the oscilloscope for inspection and cleaning, refer to Parts Lists and Exploded Views in this manual.
Inspect the internal portions of the oscilloscope for damage and wear. Refer Table 2: Internal inspection checklist on page 13 to repair any
defects immediately.
If any circuit board is repaired or replaced, check the Table 2: Internal inspection checklist on page 13 to see if it is necessary to adjust
the oscilloscope.
CAUTION: To prevent damage from electrical arcing, make sure that circuit boards and components are dry before applying
power to the oscilloscope.
Table 2: Internal inspection checklist
Item Inspect for Repair action
Circuit boards Loose, broken, or corroded solder connections.
Burned circuit boards. Burned, broken, or cracked
circuit-run plating. Remove and replace damaged circuit board.
Resistors Burned, cracked, broken, blistered condition. Remove and replace damaged circuit board.
Solder connections Cold solder or rosin joints. Resolder joint and clean with isopropyl alcohol.
Capacitors Damaged or leaking cases. Corroded solder on leads
or terminals. Remove and replace damaged circuit board.
Wiring and cables Loose plugs or connectors. Burned, broken, or frayed
wiring. Firmly seat connectors. Repair or replace modules
with defective wires or cables.
Chassis Dents, deformations, and damaged hardware. Straighten, repair, or replace defective hardware.
Cleaning procedure interior
To clean the oscilloscope interior, perform the following steps:
1. Blow off dust with dry, low-pressure, deionized air (approximately 9 psi).
2. Remove any remaining dust with a lint-free cloth dampened in isopropyl alcohol (75% solution) and then wipe with a lint-free cloth
dampened with warm deionized water. A cotton-tipped applicator is useful for cleaning in narrow spaces and on circuit boards.
STOP. If, after performing steps 1 on page 13 and 2 on page 13, a module is clean on inspection, skip steps 3 on page 14, 4
on page 14, and 5 on page 14. Proceed with step 6 on page 14.
Maintenance
TBS1000C Series Digital Storage Oscilloscope Service Manual 13