Kenwood NX-840, Service Manual

Page: 29 / 54

(No.RA011<Rev.001>)1-29
SECTION 5
TROUBLESHOOTING
5.1 Replacing TX-RX Unit
„ TX-RX unit Information
„
Supplied Accessories of "Service TX-RX unit"
„ "Service TX-RX unit" Data
The following data is written on the service TX-RX unit:
„ 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.
„ Model Name Plate Label Layout
Model Name Original TX-RX
unit Number
For Service TX-RX
unit Number
NX-840H K XC1-0010-11 XC2-0020-10
NX-840HU K XC1-0010-11 XC2-0020-11
NX-840 M XC1-0010-22 XC2-0020-21
Item (Including Parts Number) Quantity
TX-RX Unit (XC2-002) 1
Model Name Plate 1
Data Type Description
Firmware NX-740H/840H Firmware.
FPU Data
(PC program-
ming mode) XC2-002 (NX-840H/840HU) K type data.
XC2-002 (NX-840) M type data.
KENWOOD
ESN Model name: NX-840H, NX-840HU or NX-840
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.
KENWOOD ESN
NXDN ESN
Model Name Plate Label