Trouble Shooting - Tokyo Hy-Power HL-1.5KFX User Manual

Solid-state hf/50mhz band 1kw linear power amplifier
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12. Trouble Shooting

Failure
Possible Cause
AC mains not
‡ @ AC fuses blown
operating
‡ A AC cord not plugged in
‡ B Interlock switch lifting
‡ C Wrong tap used on
power transformer primary
Can't enter
‡ @ Remote control cable
Transmit mode
not connected
‡ A
‡ @ RF overdrive
O.Drive lights
‡ B Band miss-set
P
lights
‡ @ Reflected power high,
R
Antenna SWR high
‡ A Poor connection to
coax cables
FUSE lights
‡ @ Fuse blown
‡ A Antenna SWR high
‡ B Short circuit
O.Heat lights
‡ @ Internal Temperature
above 70deg. C
TVI, FMI
‡ @
‡ A RF leakage from coax
cable, grounding wire, AC
power cord etc.
Protection circuits on.
Overdrive.
‡ @ Replace with new ones.
‡ A Plug in securely.
‡ B Screw bolts tightly on the top cover.
‡ C Correct primary wiring.
‡ @ Check the cable and connect properly.
‡ A Check drive power, antenna SWR , antenna selector
A/B. Reset with AC POWER switch.
‡ @ Decrease drive.
‡ A Match the BAND correctly (Manual mode)
‡ @ Check/ adjust antenna. (Or decrease drive.)
‡ A Check the coax cable connectors.
‡ @ Replace F202 and F203 (20A) on the PA board
(PC1662V).
‡ A Adjust the antenna.
‡ B Contact the distributor, or service center.
‡ @ Cool off until LED turns off. Check for air intake
blockages. Also check air vent on top cover.
‡ @ Decrease the drive. Check ALC setting.
‡ A Insert common mode filters on antenna cable or AC
line. Add clamp-on ferrite cores (TDK, Amidon, Palomar)
on various cables.
24
Solution

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