Troubleshooting
TDS6000 Series Service Manual
6- 57
If the mains power switch is on and the oscilloscope is not on, (power supply is
in standby mode), a red light (see Figure 6--32 for its location) is visible through
the right side of the oscilloscope. If the oscilloscope is on, the red light is off.
Mains power-on and over current LEDs are
near the center of the power supply. A red
glow from them is visible while looking
through the side of Oscilloscope.
Figure 6- 32: Location of power-on and over current LEDs
If the oscilloscope thinks power is on, a red light (see Figure 6--32) means that
there is an over current condition.
If the on/standby pin (pin C1 of P201 on the rear power distribution board or pin
B162 on the riser board) is low, the oscilloscope thinks power is on.
Remove boards one at a time to locate a fault (the display, floppy, acquisition
board, front [analog supply to acquisition board] and power distribution board,
the NLX board, and the riser board). If you remove the NLX board, you must
jumper the debug power-on pins (see Figure 6--33). The PPC board and the rear
power distribution board are required for power to come up.
If removing the boards did not find the problem, replace the power supply.
Isolating to a Board if
Power Will Not Come Up
Содержание TDS6404
Страница 4: ......
Страница 14: ...Table of Contents x TDS6000 Series Service Manual...
Страница 18: ...Service Safety Summary xiv TDS6000 Series Service Manual...
Страница 52: ...Operating Information 2 12 TDS6000 Series Service Manual...
Страница 56: ...Theory of Operation 3 4 TDS6000 Series Service Manual...
Страница 60: ...Performance Verification 4 4 TDS6000 Series Service Manual...
Страница 84: ...Performance Tests 4 28 TDS6000 Series Service Manual...
Страница 150: ...Adjustment Procedures 5 2 TDS6000 Series Service Manual...
Страница 156: ...Maintenance 6 6 TDS6000 Series Service Manual...
Страница 170: ...Removal and Installation Procedures 6 20 TDS6000 Series Service Manual...
Страница 228: ...Repackaging Instructions 6 78 TDS6000 Series Service Manual...
Страница 232: ...Options 7 4 TDS6000 Series Service Manual...
Страница 234: ...Electrical Parts List 8 2 TDS6000 Series Service Manual...
Страница 252: ...Mechanical Parts List 10 16 TDS6000 Series Service Manual...