User's Manual

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１１ P rotection Circuit
11-A Interlock Protection
１
) Cover Interlock
When the top cover is removed, cover switch is activated to shut down AC power line.
(POWER Lamp, LCD panel, cooling fan are all turned off.)
2) Temperature Interlock
When the internal temperature of the amp reaches 90
℃
, AC power line is shut down.
(POWER Lamp, LCD panel, cooling fan are all turned off.)
In case all the lamps go off suddenly while transmitting , stop the transmission, unplug AC
cord, and wait for five minutes.
Check if AC main fuses are blown, or if the temp. inter-lock has been activated.
★
“Interlock” is built in for the safety of operator, avoiding the unexpected accidents from
electric and thermal shocks.
Sign Status
All power shut down.
No sign.
Main DC P. Supply (Vdd) Shut down
AC Magnet Relay Shut down
RF path Shut down
Fan Control Shut down
Reset
①
Fix top cover securely
②
Cool off the amplifier sufficiently
POWER OPER.
M
ETER
Pr
VD ALC
O
FF STBY
BAND
A
UTO
M
AN’L
O
N AIR
F
AN
ID
PROT
Pf/kW
HF SOLID STATE LINEAR AMPLIFIER HL-2500FX
MAN’L
1.8
3
.5
7
10
14
18/21
24/28
5
0
P
r/VD/ID/ALC
OUTPUT
H
I
L
O
ANT
A
B
ID
Front Side
Rear Side
Power Supply
Interlock
Switch
REMARKS
Location of Interlock Switch
The amp temperature is normally checked by thermal sensor and microprocessor.
“FAULT” temp protection is usually switched on in prior to Temp. Interlock to turn on, the
amp may have been heated by other heat source and or microprocessor is in failure.