Inspection and Cleaning
TDS 410, TDS 420 & TDS 460 Service Manual
6Ć7
Inspection — Interior
To access the inside of the oscilloscope for inspection and cleaning, refer to
the
Removal and Installation Procedures in this section.
Inspect the internal portions of the oscilloscope for damage and wear using
Table 6-3 as a guide. Defects found should be repaired immediately.
If any electrical module is replaced, check Table 5-1 in Section 5 to see if it is
necessary to adjust the oscilloscope.
CAUTION
To prevent damage from electrical arcing, ensure that circuit boards
and components are dry before applying power to the oscilloscope.
Table 6-3: Internal Inspection Check List
Item
Inspect For
Repair Action
Circuit boards
Loose, broken, or corroded solder connec-
tions. Burned circuit boards. Burned, bro-
ken, or cracked circuit-run plating.
Remove the failed module, and replace it
with a fresh module.
Resistors
Burned, cracked, broken, or blistered
condition.
Remove the module with the faulty resistor
and replace it with a fresh module.
Solder connections
Cold solder or rosin joints.
Resolder joint and clean with isopropyl
alcohol.
Capacitors
Damaged or leaking cases. Corroded sol-
der on leads or terminals.
Remove the module with the faulty capaci-
tor and replace it with a fresh module from
the factory.
Semiconductors
Loosely inserted in sockets. Distorted pins. Firmly seat loose semiconductors. Re-
move devices that have distorted pins.
Carefully straighten 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.
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 and deformations
Straighten, repair, or replace chassis.
Содержание 410
Страница 9: ...Contents x ...
Страница 13: ...Contents xx ...
Страница 19: ...Safety Summary xx ...
Страница 25: ...Introduction x x ...
Страница 26: ...Specifications ...
Страница 47: ...Operating Information ...
Страница 63: ...Operating Information Operating Information 2Ć16 ...
Страница 64: ...Theory of Operation ...
Страница 68: ...Circuit Description Theory of Operation 3Ć4 ...
Страница 69: ...Performance Verification ...
Страница 81: ...Brief Procedures Performance Verification 4Ć12 ...
Страница 119: ...Performance Tests Performance Verification 4Ć50 ...
Страница 120: ...Adjustment Procedures ...
Страница 147: ...Maintenance ...
Страница 151: ...Maintenance Information Maintenance 6Ć4 ...
Страница 228: ...Troubleshooting TDS 410 TDS 420 TDS 460 Service Manual 6Ć81 J2 Pin 1 Figure 6 38 A02 Display Connector J2 ...
Страница 237: ...Troubleshooting Maintenance 6Ć90 J7 Pin 1 J8 Pin 1 J6 Pin 1 W1 Pin 1 W2 Pin 1 Figure 6 46 A01 Backplane Module ...
Страница 240: ...Options ...
Страница 249: ...Electrical Parts List ...
Страница 251: ...Replaceable Electrical Parts List Electrical Parts List 8Ć2 ...
Страница 252: ...Diagrams ...
Страница 258: ...Diagrams 9Ć6 ...
Страница 259: ...Mechanical Parts List ...
Страница 263: ...Mechanical Parts List 10Ć4 ...
Страница 272: ...TDS 410 TDS 420 TDS 460 Service Manual 10Ć13 1 2 3 4 5 6 7 8 9 10 11 6 3 Figure 10 3 Cables and Routing ...
Страница 275: ...Mechanical Parts List 10Ć16 ...