4-12
4.9 DACview
DACview is a troubleshooting aid that allows
access to internal readings. The feature allows
output voltage, current and power that the system
reads to be output to a DVM or oscilloscope.
To use DACview, the system must be in the Test
Mode.
1) Set the system for operation in Test Mode as
described in the preceding section.
2) Connect a DVM to the Control/Display
Board test point labeled TP60 – DACV and
any GND test point (e.g. TP61).
3) Turn on power while pressing and holding
both Bipolar Mode Select Keys. Release these
Keys when 888 appears in the Monopolar
Cut Power Digital Display and the software
revision appears in the Monopolar Coag
Power Digital Display. 888 and the software
revision may persist in the displays for a few
seconds after the Bipolar Mode Select Keys
are released.
4) Move the DACview switch (Control/Display
Board S2 position 8 – the change is recog-
nized, not whether the switch is on or off).
5) The Monopolar Cut Power Digital Display is
used to display the selected DACview chan-
nel. Since power was just initialized, the
Monopolar Cut Power Digital Display will
display “0” at this point. Select the desired
channel using the Monopolar Cut Power
Adjustment Keys.
6) Move the DACview switch (again, the change
is recognized, not whether the switch is on or
off). The cut power setting will be displayed.
7) To select a different location to monitor with
a DVM, simply move the DACview switch
and the memory locations will be displayed
instead of the cut power. Select the desired
selection and then move the DACview switch
again.
Table 4.10 DACview Channels
Channel Source Function Scaling
0 No channel selected
1 Monitor RF RMS Power (300mS running average) 0.01 V / 1 W
4.10 Troubleshooting
Listed in Table 4.11 are potential errors that
may occur and problem solving ideas for each.
All error codes (Err xxx) can only be cleared by
cycling power.
When an error code is displayed, reset the sys-
tem to determine if the error can be cleared with
a System Reset or if further service is required.
Error codes are stored as Last Fault Codes (See
Last Fault Codes).
CAUTION: Activation of unit with the collector
fuses (F2,6, & 7 on power board) removed and
the base fuses (F1,4, & 5) in place can result in
damage to U3 on power board. Activation with
base fuses removed and collector fuses in place is
acceptable.
Table 4.11 Troubleshooting
Problem Possible Cause
Display Panel Blank when System
is Powered on
Verify the power cord is fully seated in the power receptacle on the back of the
System.
With the power cord disconnected, verify fuses are good and are installed properly
in the receptacles on the back panel of the generator.
Remove the top cover and verify that the Control/Display Board and all harnesses
are properly seated.
Check that power appears on the Control/Display Board by measuring +12 V at
TP66 and +5V at TP54. Check other power supply test points as necessary to
characterize the problem.
Check that J17 and J8 on power board are connected. Check fuses F3 and F11 on
power board.
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