V
FUTABA 9Z
THE UNOFFICIAL WORKSHOP MANUAL
WARNING:
THE INFORMATION IN THIS MANUAL IS FOR INFORMATION PURPOSES ONLY AND MAY BE INCORRECT, CAUSE DAMAGE
TO YOUR RADIO OR INJURY TO YOURSELF AND OTHERS. IF YOU USE THIS MANUAL YOU DO SO SOLEY AT YOUR OWN RISK.
www.jamesandtracy.co.uk
Copyright 2012 jamesandtracy.co.uk
Page 30 of 84
To remove the aerial for servicing you have two options to access and undo the Allen
key bolt that retains it at its base:
Option 1 – Full Access:
Disassemble the case and remove the main PCB as described
in Section 3.4. Insert a 3/32” Allen key (although some are 3mm) to undo the bolt
through the access hole in the base of the battery compartment and undo the bolt (see
Figure 23). Maintain pressure on the bolt throughout removal and replacement so it
doesn’t fall out of its slot. The advantage of this option is that it will give you full access
to the bottom of the antenna should the worst happen and the bolt become dislodged
and falls out during servicing.
Option 2 – Restricted Access:
Disassemble to Stage 1 as described in Section 5.1 (i.e.
you only need to remove the transmitter battery pack). Insert a 3/32” Allen key (although
some are 3mm) to undo the bolt through the access hole in the base of the battery
compartment and undo the bolt (see Figure 23). Maintain pressure on the bolt
throughout removal and replacement so it doesn’t fall out of its slot. Be very careful! If
the bolt drops out you will need to disassemble the transmitter to retrieve it and during
disassembly you are likely to jiggle the missing bolt deeper into your transmitter’s
internal components.
Figure 23 The access hole for the aerial retaining bolt in the battery compartment
3.7. Backup
(Lithium)
Battery
The main back up or memory battery should be replaced every 5 years. Failure to do so
will eventually result in the loss of all your model settings when the battery is exhausted.
When this happens a warning message (BACK UP) will be displayed on the LCD and
the 9Z will emit an alarm tone that you cannot cancel. Replacement of this battery is not
difficult, but you really will need the right tools (refer to Section 2.3).