Troubleshooting - Kenwood NX-840H Service Manual

5.1 Replacing TX-RX Unit
TX-RX unit Information
Model Name Original TX-RX
unit Number
NX-840H K XC1-0010-11
NX-840HU K XC1-0010-11
NX-840 M XC1-0010-22
Supplied Accessories of "Service TX-RX unit"
Item (Including Parts Number)
TX-RX Unit (XC2-002)
Model Name Plate
"Service TX-RX unit" Data
The following data is written on the service TX-RX unit:
Data Type
Firmware NX-740H/840H Firmware.
FPU Data XC2-002 (NX-840H/840HU) K type data.
(PC program- XC2-002 (NX-840) M type data.
ming mode)
KENWOOD Model name: NX-840H, NX-840HU or NX-840
ESN Type: K or M
The same number as the Model Name Plate
label is written.
NXDN ESN The same number as the Model Name Plate
label is written.
Model Name Plate Label Layout
SECTION 5

TROUBLESHOOTING

For Service TX-RX
unit Number
XC2-0020-10
XC2-0020-11
XC2-0020-21
Quantity
1
1
Description
After Changing the PCB
(1) Using the KPG-175D, select your desired item (Model
Name and Frequency) from the Model> Product Infor-
mation menu, then use Program> Write Data to the
Transceiver to write the FPU data (PC Programming
mode). When writing to the transceiver, a Warning Mes-
sage, corresponding to the item selected, appears. Click
[OK] to continue writing the data.
(2) Enter Program> Test Mode, then adjust the various ad-
justment data (PC Test Mode) as described in the "SEC-
TION 4 ADJUSTMENT"
(3) Attach the new labels corresponding to the new printed
circuit board. (Refer to the images right for label place-
ment.)
(4) If necessary, write the FPU data used by the customer
with the KPG-175D.
Note:
• When a new printed circuit board is used, the KENWOOD
ESN changes, as does the Transceiver Information dis-
play of the KPG-175D, but this does not have any effect
on the operation of the transceiver.
• If changing to the original ESN, please contact our service
center.
(No.RA011<Rev.001>)1-29