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General Troubleshooting & Repair of the M703E Calibrator M703E Calibrator Operators Manual
18. Follow the procedures defined in Section 3.4.4 to confirm that the calibrator’s vital functions are working
(power supplies, CPU, relay PCA, keyboard, PMT cooler, etc.).
See Figure 3-3 for general layout of components and sub-assemblies in the calibrator.
See the wiri
ng interconnect diagram and interconnect list in Appendix D.
11.1.1. FAULT DIAGNOSIS WITH WARNING MESSAGES
The most common and/or serious instrument failures will result in a warning message being displayed on the
front panel. Table 11-1 lists warning messages, along with their meaning and recommended corrective action.
It should be no
ted that more than two or three warning messages occurring at the same time is often an
indication that some fundamental sub-system (power supply, relay PCA, motherboard) has failed rather than an
indication of the specific failures referenced by the warnings. In this case, it is recommended that proper
operation of power supplies (See Section 11.4.3), the relay PCA (See Section 11.4.6), and the motherboard
(See Sectio
n11.4.8) be co
nfirmed before addressing the specific warning messages.
The M703
E will alert the user that a Warning Message is active by displaying the keypad label MSG on the Front
Panel. In this case, the Front panel display will look something like the following:
STANDBY LAMP DRIVER WARNING
TEST GEN STBY MSG CLR SETUP
The cali
brator will also al
ert the user via the Serial I/O COM port(s) and cause the FAULT LED on the front panel
to blink.
To view or clear the various warning messages press:
Once the last warning has
been cleared, the
MESSAGE
FIELD
will return to displaying
the currently selected
TEST
FUNCTION
and value.
Suppresses the
warning messages
Press CLR to clear the current
message.
If more than one warning is
active, the next message will take
its place.
NOTE:
If a warning message persists after
several attempts to clear it, the message
may indicate a real problem and not an
artifact of the warm-up period
STANDBY SYSTEM RESET
TEST GEN STBY SEQ MSG CLR SETUP
STANDBY SYSTEM RESET
TEST GEN STBY SEQ MSG CLR SETUP
STANDBY SYSTEM RESET
TEST GEN STBY SEQ MSG CLR SETUP
SYSTEM ANALOG CAL WARNING
TEST CLR SETUP
MSG returns the active
warnings to the message
field.
STANDBY ACT =STANDBY
<TST TST> GEN STBY SEQ SETUP
178 05744 Rev B