Kenwood NX-420 K Service Manual page 32

NX-420
■ Supplied Accessories of "Service TX-RX unit"
Item (Including Parts Number)
TX-RX Unit (X57-837)
KENWOOD ESN Label
NXDN ESN Label
MPT ESN Label
Addendum (B59-2655-XX)
■ "Service TX-RX unit" Data
The following data is written on the service TX-RX unit:
Data Type
Firmware
FPU Data
(PC programming mode)
Various Adjustment Data
(PC Test mode)
KENWOOD ESN
NXDN ESN/MPT ESN
■ After Changing the PCB
1. After changing the printed circuit board, write the up-to-
date Firmware following the instructions in the "REALIGN-
MENT - 6.Firmware Programming Mode".
• Write the Firmware in accordance to the Market. If you
write different Market Firmware, there are times commu-
nication with the FPU is not possible.
2. Using the KPG-141D, select your desired item (Model
Name and Frequency) from the Model> Product Informa-
tion menu, then use Program> Write Data to the Trans-
ceiver to write the FPU data (PC Programming mode).
When writing to the transceiver, a Warning Message,
corresponding to the item selected, appears. Click [OK] to
continue writing the data.
3. Enter Program> Test Mode, then adjust the various adjust-
ment data (PC Test Mode) as described in the "ADJUST-
MENT".
4. Attach the new labels corresponding to the new printed
circuit board. (Refer to the images below for label place-
ment.)
5. If necessary, write the FPU data used by the customer
with the KPG-141D.
32
TROUBLE SHOOTING
Quantity
1
1
1
1
1
Description
NX-420 K type Firmware.
X57-837 (NX-420) Kx type data.
General adjustment values for the
X57-837 (NX-420).
Model name: NX-420S
Type: Kx
The same number as the KENWOOD
ESN label is written.
The same number as the NXDN ESN/
MPT ESN label is written.
Note:
• When using the ESN Validation function of Trunking, the
ESN number changes when the circuit board is changed
(the number is written on the circuit board); the Trunking
System cannot be accessed. Maintain the ESN data of
the Trunking System following the new ESN.
• When a new printed circuit board is used, the KENWOOD
ESN changes, as does the Transceiver Information display
of the KPG-141D, but this does not have any effect on the
operation of the transceiver.
• If changing to the original ESN, please contact our service
center.
■ ESN Label Layout
Note:
A UPC code and UPC barcode is not printed on the
KENWOOD ESN Label. If necessary, cut the label at the
cutoff line and attach only the serial number.
(Not used)
NXDN ESN Label (Bar code)
KENWOOD ESN Label
NXDN ESN Label (Number)
MPT ESN Label (Number)
KENWOOD ESN Label
Cut line
NXDN ESN Label (Bar code)
NXDN ESN Label (12 digits)
MPT ESN Label (10 digits)