Fault Finding; General Checks - Ametek Teseo CBA Series Operation Manual

10

FAULT FINDING

10.1

General checks

These are simple checks the user can perform to establish the cause of any amplifier
malfunction. The following procedures are by no means comprehensive, and do not
disclose any obscure fault with the amplifier or any system it may form a part of.
Amplifier Won't Power Up at Mains Switch on.
Ensure that the line cord is properly installed.
Ensure that the line cord or connector is not damaged.
Ensure that the 3-phase line circuit-breaker (model dependent) and front panel
rocker switch is switched on.
Ensure that the line circuit-breaker is not in the tripped condition.
Note: If the line circuit-breaker trips, there is a fault with the power supply and the
amplifier must be returned to TESEQ for repair. There are no user-replaceable fuses
in the amplifier.
No RF Output
Ensure that the correct safety interlock signal is present. If the Interlock facility is
not used, ensure that the Interlock shorting-link (rear panel) is inserted.
Ensure that the touch screen Operate/Standby button is illuminated green.
Ensure that the RF cables and connectors are mated correctly.
Ensure that there is no damage to any of the RF connectors or cables, especially
where the cable enters the connector.
Ensure that the touch screen FLT/RST fault light is not illuminated red.
Ensure that the RF input level is within specification.
RF present but at reduced level
Ensure that the gain control is set to 100%
Ensure that the RF cables and connectors are mated correctly.
Ensure that the inner pins of the RF connectors are clean.
Ensure that the RF load is 50 ohms.
Ensure that there is no damage to any of the RF connectors or cables, especially
where the cable enters the connector.
Ensure that the RF input level is within specification and that the gain adjustment is
set as expected.
Note: If the above checks have been done and the RF output is still at reduced level,
there is probably a fault with the RF modules, in which case the amplifier must be
returned to TESEQ for repair.
CBA Manual: H012161 Rev: 3
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