B-1
Introduction
The following troubleshooting tips are a guide-
line to identify the source of a problem, and in
some cases the solution to correct the problem.
It will be necessary to refer to the Schematic,
Maintenance, Calibration and/or Circuit
Description Sections. This section will be done in
three parts:
1) Controller Error Codes
2) Monitor Error Codes
3) Additional Failures.
Error codes are displayed on the Front Panel with
Err XX, where the XX will be some numeric value
in the Coag Display Window. In the column
marked Err are the numeric values for the system
error codes.
Record or note all error codes, as in some cases
more than one error code will be displayed and
the last error code displayed may be the effect
and not the cause. When requesting assistance
from CONMED Technical Services, be specific on
which error codes, if any, are displayed.
Errors that occur when the unit is powered up
are called POST (Power-On Self-Test) and in
most cases are Fatal. To bypass the POST or
RUN TIME errors, enable the TEST MODE (see
Maintenance - Default Settings).
There are two kinds of Error Codes - Fatal and
Non-Fatal. A fatal error code cannot be cleared
unless the system is reset. A non-fatal error code
is cleared when the failure is corrected or activa
-
tion is terminated. In the table below, all fatal
error codes are shown in
bold type. The PCB
assembly is identified by the assembly number
(A1, A2, A3, etc). See Figure C-1 for informa
-
tion on assembly locations.
The Display PCB (A5) has several devices that
are programmable, and in some instances, more
than one device has the same program. By swap
-
ping the location of like devices, a failure may be
identified by a change in the system behavior or
a change in error codes. When removing these
devices from their sockets, it is recommended to
Troubleshooting Guide
Appendix B
use an IC puller designed for PLCC type devices.
The following list is of devices with identical pro
-
grams:
• Display Drivers: U14, U39, & U41
• Display Drivers: U17, U20, & U40
• Encoder/Activation PIA: U16 & U33
• Encoder I/O PIA: U31 & U32
The system will not display an error code for all
system faults, which can make troubleshooting a
real challenge. This unit has two RF amplifiers,
multiple output relays, and allows activation from
either a handcontrol or footcontrol for all modes.
When attempting to isolate a problem or isolate
a problem down to an specific assembly, test all
modes and test all RF outputs as the process of
elimination may be the most reliable means of
determining the failure. Not all system failures will
effect all modes or all RF outputs.
CAUTION: Insure the unit is in the RUN
MODE when placed back in service or a Fatal
Error will occur (Err 20).
WARNING: When the TEST MODE is
enabled, the system is NOT SAFE for use in
a procedure, as most of the monitoring func
-
tions are ignored or turned off.
Note: Service at this level should only be per
-
formed by qualified service technicians.
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