User Manual - Rev AJ
California Instruments
7.4.5 Power-on Troubleshooting Using the LED’s.
WARNING:
Do not touch any parts inside the unit during this test as they will
be live and dangerous. Always wear safety glasses.
If the three input fuses are OK, then reconnect the main AC input power to the cabinet.
Turn the main breaker on and check green LED DS2 and DS3 on the system interface board.
Both LEDs should be lit indicating the +/-19Vdc and +/-15Vdc supplies are OK.
If one or both of the LEDs is not
wrong with the LV power supply and
it will have to be serviced.
Oscillator
(Front Panel):
If LV supply appears good, then program 150Vac on the low range and connect a DMM to TP2
There should be about 100
voltage at all is measured it is
possible that the AC power stage inside the module has failed and it will be necessary to remove
the power module from the chassis for closer inspection.
LV Supply (CI P/N 7003-702):
lit, then there is something
(phase A) on the system interface board with the low side of the meter connected to TP1. There
should be a 2 – 3 volt rms signal present on TP2. Check TP3 (phase B) for the same signal.
Check TP4 (phase C) for the same signal.
AC power module (CI P/N 7003-402-1):
If the oscillator drive signals are present on the system interface board, connect the DMM to
brass terminals 5 & 6 located near the bottom of the power module. Program 100 Volts.
Vac between terminals 5 and 6. If no
WARNING:
to discharge.
Wait 10 minutes for all internal capacitors
To remove the power module proceed as follows:
1. Disconnect the 7 wires going to the brass terminals on the lower front panel of the module.
er straps holding the module in the chassis slot.
(30Kg).
the bottom and sides of the left hand cover as seen from the front when module is installed
normally.
6. Inspect the three IGBT transistor modules Q1, Q2 and Q3 for any visible damage.
7. Using an ohmmeter check the 30A fuses on the positive and negative side of the power
distribution board that connects the four amplifier modules to the DC bus. If any of them are
open, then one or more of the amplifier sections has a damaged device on the heat sink
assemblies and the power module assembly will have to be serviced.
Label the wires so they can be reinstalled correctly later.
2. Remove screws securing the upper and low
3. Remove the 50-pin ribbon connector at J50A, B or C.
4. Carefully slide module outward and lift out of cabinet. Use caution, module weighs 66 LBS
5. With the power module out of the cabinet and lying flat on a bench, remove the screws on
MX Series
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Содержание MX30-1
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Страница 33: ...User Manual Rev AJ California Instruments MX Series 33 ilter option schematic Figure 2 12 MX output f ...
Страница 34: ...User Manual Rev AJ California Instruments Figure 2 13 MX45 Output Noise 10 KHz 1 MHz 34 MX Series ...
Страница 50: ...User Manual Rev AJ California Instruments Figure 3 11 MX135 or MX135 MB Output Wiring Rear view 50 MX Series ...
Страница 147: ...User Manual Rev AJ California Instruments Output Status Available on top assembly 7003 427 only MX Series 147 ...
Страница 148: ...User Manual Rev AJ 148 California Instruments MX Series Figure 5 2 MX Series Detailed Block Diagram ...
Страница 149: ...User Manual Rev AJ MX Series California Instruments 149 Figure 5 3 Power Module Detailed Block Diagram ...
Страница 195: ...User Manual Rev AJ California Instruments Figure 9 4 Voltage Modulation MX Series 195 ...