Troubleshooting
CSA8000 & TDS8000 Instruments and Sampling Modules
6–71
If the mains power is on, a red light (see Figure 6–39 for its location) is visible
through the right side of the instrument.
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 instrument
Figure 6–39: Location of power-on and over current LEDs
If the instrument thinks power is on, a red light (see Figure 6–39) 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 instrument 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 rear power distribution
boards, the NLX board, and the riser board). If you remove the NLX board, you
must jumper the debug power-on pins (see Figure 6–40). 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 CSA8000 Series
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Страница 18: ...Service Safety Summary xiv CSA8000 TDS8000 Instruments and Sampling Modules ...
Страница 22: ...Preface xviii CSA8000 TDS8000 Instruments and Sampling Modules ...
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Страница 59: ...80C00 Modules Specifications 1 36 CSA8000 TDS8000 Instruments and Sampling Modules back ...
Страница 63: ...80A01 Module Specifications 1 40 CSA8000 TDS8000 Instruments and Sampling Modules ...
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Страница 126: ...Performance Tests 4 22 CSA8000 TDS8000 Instruments and Sampling Modules ...
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Страница 291: ...Removal and Installation Procedures 6 66 CSA8000 TDS8000 Instruments and Sampling Modules ...
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