[ICOM] IC-PW1 Antenna Tuner

[Trevor Pitman]

Hello Group

Looking for some help

I purchased a used PW1 which is supposed to be 6 months old and working perfectly. It is mated to a IC-7600. Serial No 03010xx

Whilst I was going through the setup procedure the book suggests that the antenna tuner in the PW1 will work with the power off along with the input switch and antenna selector. Power is provided from the 7600 acc cable 13.8v supply .

The input selector and antenna switches work ok with the power off and the input, antenna select and meter switch leds all illuminate with the selections made. 
The tuner however will only work when the amp is turned on.

Logic suggests that the tuner should be operational with the radio on and the amp off.

Is this normal or is the book misleading??????

Many thanks


Trevor
VK3VG