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Maintenance
6–4
TDS 340A, TDS 360 & TDS 380 Technical Reference
Table 6–2: Internal inspection check list
Item
Inspect for
Repair action
Circuit boards
Loose, broken, or corroded solder connec-
tions. Burned circuit boards. Burned, broken,
or cracked circuit-run plating
Remove the failed module and replace it with
a new module
Resistors
Burned, cracked, broken, or blistered condition
Remove the module with the faulty resistor
and replace it with a new module
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 the module with the faulty capacitor
and replace it with a new module from the
factory
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
STOP
. If, after doing steps 1 and 2, a module is clean upon inspection, skip the
remaining 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 rinse with warm deionized water. (A cotton-
tipped applicator is useful for cleaning in narrow spaces and on circuit
boards.)
NOTE
. If steps 1 and 2 do not remove all the dust or dirt, the oscilloscope may be
spray washed using a solution of 75% isopropyl alcohol by doing steps 3
through 7.
3. Gain access to the parts to be cleaned by removing easily accessible shields
and panels (see Removal and Replacement procedures).
4. Spray wash dirty parts with the isopropyl alcohol and wait 60 seconds for the
majority of the alcohol to evaporate.
5. Use hot (120
_
F to 140
_
F or 48.9
_
C to 60
_
C) deionized water to
thoroughly rinse them.
6. Dry all parts with low-pressure, deionized air.
7. Dry all components and assemblies in an oven or drying compartment using
low-temperature (125
_
F to 150
_
F or 51.7
_
C to 65.5
_
C) circulating air.
Cleaning Procedure —
Interior
Содержание TDS 340A
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Страница 12: ...Contents viii TDS 340A TDS 360 TDS 380 Technical Reference ...
Страница 16: ...Service Safety Summary xii TDS 340A TDS 360 TDS 380 Technical Reference ...
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Страница 42: ...Operating Information 2 10 TDS 340A TDS 360 TDS 380 Technical Reference ...
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Страница 49: ...Theory of Operation 3 6 TDS 340A TDS 360 TDS 380 Technical Reference ...
Страница 59: ...Theory of Operation 3 16 TDS 340A TDS 360 TDS 380 Technical Reference ...
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Страница 82: ...Performance Tests 4 22 TDS 340A TDS 360 TDS 380 Technical Reference ...
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Страница 91: ...Adjustment Procedures 5 8 TDS 340A TDS 360 TDS 380 Technical Reference ...
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Страница 119: ...Removal and Replacement TDS 340A TDS 360 TDS 380 Technical Reference 6 27 Figure 6 15 Low voltage power supply removal ...
Страница 134: ...Troubleshooting 6 42 TDS 340A TDS 360 TDS 380 Technical Reference Figure 6 28 J901 pin 5 signal ...
Страница 140: ...Troubleshooting 6 48 TDS 340A TDS 360 TDS 380 Technical Reference ...
Страница 142: ...Repackaging Instructions 6 50 TDS 340A TDS 360 TDS 380 Technical Reference ...
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Страница 206: ...Electrical Parts List 8 58 TDS 340A TDS 360 TDS 380 Technical Reference ...
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Страница 210: ...TDS 340A 360 380 OPTION BOARD BLOCK DIAGRAM A2 0 ...
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Страница 212: ...OPTION BUS AND GPIB A2 TDS 340A 360 380 1 ...
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Страница 214: ...TDS 340A 360 380 ROM PRINTER AND RS 232 A2 2 ...
Страница 216: ...PRINTER POWER A3 1 TDS 340A 360 380 OPTION 14 ...
Страница 218: ...A5 1 FLOPPY INTERFACE TDS 340A 360 380 ...
Страница 222: ...CPU A6 TDS 340A 360 380 1 ...
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Страница 224: ...A6 TDS 340A 360 380 2 FPP POTS ...
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Страница 226: ...LEDS DRIVER A6 TDS 340A 360 380 3 ...
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Страница 228: ...SWITCHES A6 TDS 340A 360 380 4 ...
Страница 233: ...9 26 TDS 340A TDS 360 TDS 380 Technical Reference ...
Страница 234: ...ROOT SHEET A11 A12 TDS 340A 360 0 ...
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Страница 236: ...TRIGGERS A11 A12 TDS 340A 360 1 TDS 340A ...
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Страница 238: ...ATTENUATORS A11 A12 TDS 340A 360 2 TDS 340A TDS 340A ...
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Страница 240: ...TRIGGER LOGIC AND TIME INTERPOLATOR A11 A12 TDS 340A 360 3 ...
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Страница 242: ...TIME BASE CONTROLLER A11 A12 TDS 340A 360 4 ...
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Страница 244: ...SAMPLER A11 A12 TDS 340A 360 5 ...
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Страница 246: ...CPU A11 A12 TDS 340A 360 6 TDS 340A ...
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Страница 248: ...DISPLAY A11 A12 TDS 340A 360 7 ...
Страница 252: ...MAIN BLOCK DIAGRAM A13 TDS 380 0 MAIN BOARD 671 3753 00 389 2154 00 ...
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Страница 254: ...TRIGGERS A13 TDS 380 1 ...
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Страница 256: ...ATTENUATORS A13 TDS 380 2 ...
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Страница 258: ...TRIGGER LOGIC AND TIME INTERPOLATOR A13 TDS 380 3 ...
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Страница 260: ...TIMEBASE A13 TDS 380 4 ...
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Страница 262: ...SAMPLER A13 TDS 380 5 ...
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Страница 264: ...CPU A13 TDS 380 6 ...
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Страница 266: ...DISPLAY A13 TDS 380 7 ...
Страница 269: ...9 62 TDS 340A TDS 360 TDS 380 Technical Reference ...
Страница 270: ...MONITOR BLOCK DIAGRAM A26 TDS 340A 360 380 0 ...
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Страница 272: ...INPUTS VIDEO AND VERTICAL DEFLECTION A26 TDS 340A 360 380 1 ...
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Страница 286: ...Mechanical Parts List 10 12 TDS 340A TDS 360 TDS 380 Technical Reference ...
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