Kenwood NX-200 Service Manual page 38

NX-200(G)
Replacing Control Unit
■ Control unit Information
Model Name
NX-200(G) (K: 6-key)
NX-200(G) (K2: 18-key)
■ Method of confi rming "Original Control unit"
and "Service Control unit"
X53-459
Component side
X53-459 R848
0-10 0Ω
0-11 (None)
0-12 0Ω
0-13 (None)
Note:
Ω
• The 0 resistor (R848, R849 and R853) is used to differ-
entiate the destination with a visual check. These are not
connected with any PCB pattern; they are specifi cally for
production control. There is no need to change the mount
of these resistors.
• There is no difference between the schematic diagram of
the Service Control unit (X53-4590-12/X53-4590-13) and
the schematic diagram of the original Control unit (X53-
4590-10/X53-4590-11). (R848, R849 and R853 are con-
nected with GND (ground) only.)
38
TROUBLE SHOOTING
Original Control unit For Service Control
Number unit Number
X53-4590-10 X53-4590-12
X53-4590-11 X53-4590-13
The 0 resistor (R853) is mounted
on the "R853" silk print part
of the Service Control unit
(X53-4590-12/X53-4590-13).
The shielding plate is soldered
on the Service Control unit
(X53-4590-12/X53-4590-13).
R849 R853
(None) (None)
0Ω (None)
(None) 0Ω
0Ω 0Ω
■ Supplied Accessories of "Service Control unit"
Item (Including Parts Number)
Control Unit (X53-459)
Kenwood ESN Label
NXDN ESN Label
Product Number Label
MPT ESN Label (for E type)
■ "Service Control unit" Data
The following data is written on the service control unit:
Data Type
Firmware
FPU Data
(PC programming mode)
Various Adjustment Data
(PC Test mode)
Kenwood ESN
NXDN ESN/
MPT ESN/
Product number
■ After Changing the PCB
1. After changing the printed circuit board, write the up-
R856
to-date Firmware following the instructions in the "RE-
(None)
ALIGNMENT - 6.Firmware Programming Mode".
2. Using the KPG-111D/111DN, select your desired item
(None)
(Model Name and Frequency) from the Model> Product
(None)
Information menu, then use Program> Write Data to the
(None)
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.
3. Enter Program> Test Mode, then adjust the various ad-
justment data (PC Test Mode) as described in the "AD-
JUSTMENT".
4. Attach the new labels corresponding to the new printed
circuit board. (Refer to the images on page 37 for label
placement.)
5. If necessary, write the FPU data used by the customer
with the KPG-111D/111DN.
Quantity
1
1
1
1
1
Description
NX-200G/300G Firmware.
X53-459 (NX-200G) K type data.
General adjustment values for the
X53-459 (NX-200G).
Model name:
[X53-459] NX-200/300S1 (No DTMF
keypad) or NX-200/300S2 (with DTMF
keypad)
Type: K
The same number as the Kenwood
ESN label is written.
The same number as the NXDN ESN/
MPT ESN/Product Number label is
written.