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TROUBLESHOOTING
Initially, make sure the power entry module on the rear panel is set for
the AC line voltage for your area, the correct fuse is installed, and the
line cord is inserted all the way into the power entry module. The
selected line voltage may be seen through the clear window, just below
the fuse.
When the unit is plugged in and turned "ON", the units model number,
and firmware version number will be briefly displayed. Then the self test
will execute.
If the unit displays no sensible message, the internal memory may be
corrupted and a "cold boot" may fix the problem. To do a "cold boot",
turn the unit off. Then, while holding the BSP key down, turn the unit
"ON". This procedure initialize all data in the FS700's RAM.
Self Test Errors
The self-tests procedure may fail with an error message. The
messages that may be displayed are listed below:
System ROM Test FAIL
This message will occur if the FS700
determines that the contents of its ROM
are no longer the same as originally
programmed. The ROM must be
replaced.
System Memory Test FAIL
This message occurs if the RAM
memory cannot reliably be written and
read. The RAM must be replaced.
Pattern Memory Test FAIL
This message occurs if the pattern
generator RAM may not be reliably
written and read. This indicates a
problem in the RAM or the address
generation circuitry.
DAC/ADC Test FAIL
This message indicates a problem in the
16 bit DAC, the ADC, or the analog
multiplexer.
Amplifier Gain FAIL
This message indicates that the gain of
the RF stages is either too high or low.
Usually this means that an amplifier,
analog switch, or the peak detector is
dead.
Attenuator X FAIL
This message indicates that the
attenuation for attenuator X (1,2,3,4) is
out of range. This usually means that an
analog switch is dead.
