Using The Fault Codes (Signatures) For Diagnostics - Acom 2020S User Manual

Besides the primary fuses, there are internal fuses inside the amplifier.
Do not replace internal fuses located inside the amplifier.
Blown internal fuses can be a symptom of a more serious problem, which should be
resolved beforehand. A fault of this type will not occur under normal operating
circumstances.
Replacing internal fuses is a complex and potentially dangerous operation.
For this reason, we recommend this work be carried out only by a trained service
technician.
Contact your ACOM dealer for assistance (see Section
Unauthorized replacement of inside fuses infringes the warranty conditions!
Besides several specific national standards, the principal fuses standard applied
worldwide is IEC 60127.

Using the Fault Codes (signatures) for Diagnostics

7.4.
The data of the last 28 HARD FAULT protection trips is stored in the amplifier memory (see Section
).
FAULTS LOG
The data can be downloaded from ACOM 2020S memory through the RS-232 port and stored in a computer
file even if the amplifier cannot be turned on after a serious fault - feeding external power to the Control
unit only in either of the following ways will do:
8 to 15 V DC voltage applied to the "DEBUG mode" input (see
•
the CAT/AUX connector
current;
If the Control board has already been taken out of the amplifier, it can be powered directly
•
with +5 V (0.4 A) and the fault log downloaded via the RS-232 port.
In the FAULT LOG reading mode (see Section
transmits FAULTS LOG data from the memory through the RS-232 interface (see Section
connector). The RS-232 protocol settings are: 9600, 8, N, 1 (9600 bit/s, 8 information bits, no
232 interface
parity check, 1 stop bit).
Page 58 of 76 | S e c t i o n MAINTENANCE
User's Manual | ACOM 2020S | 1.8-54 MHz Linear Power Amplifier
WARNING
) of the CAT/AUX port. The power supply has to be capable of 0.4 A
5.4 Menu FAULTS LOG
).
1.3 Owner Assistance
Table 2-2 | Signals and pin out of
), the Control board automatically
5.4 Menu
2.5.c) Amplifier's RS-
June 2022