FT227R faults
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** There are several different versions of the FT227R - The main differences
were on the PLL control unit, but on some of the versions that were modified
in this Country, the pushbuttons on the front perform functions that are
different from their marked functions. Also some dealers fitted their own
modification boards to give different memory facilities.

NO AUDIO OUTPUT : If there is no DIN plug (with pins 1+4 shorted together)
fitted in the accessory socket, then there will be no audio. The audio IC
(575C2) sometimes fails.

TUNING CONTROL ONLY WORKS ON PART OF ROTATION : If the optical disc is out of
alignment then it may have become scratched, causing this fault.

NO TX (RELAY NOT OPERATING) : Q713 relay driver on PLL control unit - circuit
reference may be different on some models.

TUNING CONTROL INOPERATIVE : Check supply volts to the LEDs in the
photo-couplers on the opto disc. Also check the CMOS inverter IC the
photo-coupler outputs connect to.

NO RF OUTPUT : I've never had a PA failure on this rig but faults I have had
include Q11 (2SD235 - power control), Q206 (predriver), and X401 (10.7MHz).

NO RX AND NO TX : I've twice had failure of the VCO unit - this is epoxy
filled and requires replacement of the whole unit.

ONLY LAST DIGIT SHOWING : PLL out of lock. I once had Q308 faulty.

SCAN FAULTS (SOME MODELS ONLY) : Check the CMOS ICs in the scan control
circuitry - specifically those connected direct to the scan control i/ps.

(Source unknown)

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