NX-200
11
DISASSEMBLY FOR REPAIR
4. Compatibility Information for the Control unit and TX-RX unit
■
Compatibility information
There are some important notices when you replace the Control and TX-RX units.
1. Firmware
“BB9E” or later fi rmware versions must be applied to that radio.
2. PCB compatibility chart
Compatibility Chart
Firmware and Control Unit
“30AC” or earlier version
(Compatible with “BB9E” or later fi rmware)
“BB9E” or later version
X53-4260-10/-11/-12/-13
(Old)
(J79-0131-19)
X53-4260-10/-11/-12/-13
(New)
(J79-0131-29)
TX-RX Unit
X57-7360-10
(Old)
(J79-0127-19/J79-0127-29)
Available
Available
X57-7360-10
(New)
(J79-0127-39)
NOT available without circuit modifi cations
Without circuit modifi cations, the transmit frequency
will be unstable.
Please refer to the “Note”.
“BB9E” or later fi rmware is also required to perform
radio specifi cations adequately.
Available
3. Readjustment
It is necessary to readjust all the adjustment items.
Note:
New TX-RX unit (X57-7360-10) circuit modifi cations for using the Old Control unit.
The steps below are required to use the Old Control unit and New TX-RX unit combination.
1) Remove R438 (RK73GB2A000J: 0
Ω
).
2) Place the chip jumper RK73GB2A000J (removed in step 1) on the R437 land pattern.
R438
R437
New TX-RX unit
(X57-7360-10) (A/2)
Foil side
R437 (Place the chip jumper)
R438 (Remove the chip jumper)