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General Troubleshooting & Repair of the M703E Calibrator M703E Calibrator Operators Manual
11.4. SUBSYSTEM CHECKOUT
The preceding sections of this manual discussed a variety of methods for identifying possible sources of failures
or performance problems within the M703E calibrator. In most cases, this includes a list of possible components
or subsystems that might be the source of the problem. This section describes how to check individual
components or subsystems to determine if which is actually the cause of the problem being investigated.
11.4.1. VERIFY SUBSYSTEM CALIBRATION
A good first step when troubleshooting the operation of the M703E calibrator is to verify that its major
subsystems are properly calibrated. These are:
Test Channel D A conversion (see Section 6.9.2).
Gas p
ressure calibration (see Section 8.3).
Wh
en optional O
3
components are installed, you should also check:
Photometer calibration (see Section 8.1).
O
3
generator calibration (see Section 8.2).
11.4.2. AC MAIN POWER
The M703E calibrator’s electronic systems will operate with any of the specified power regimes. As long as
system is connected to 100-120 VAC or 220-240 VAC at either 50 or 60 Hz it will turn on and after about 30
seconds show a front panel display.
Internally, the status LEDs located on the Relay PCA, Motherboard and CPU should turn on as soon as
the power is supplied.
If they do not, check the circuit breaker built into the ON/OFF switch on the instruments front panel
CAUTION
SHOULD THE AC POWER CIRCUIT BREAKER TRIP, INVESTIGATE AND CORRECT
THE CONDITION CAUSING THIS SITUATION BEFORE TURNING THE
CALIBRATOR BACK ON.
186 05744 Rev B