Operating Method Of Enforced Firmware Overwriting Mode; Replacing Tx-Rx Unit; Tx-Rx Unit Information; Method Of Confirming "Original/Service Tx-Rx Unit" - Kenwood NX-1200 Series Service Manual

5.2 Operating Method of Enforced Firmware Overwriting
Mode
Enforced firmware overwriting mode is a mode to forcibly
overwrite the transceiver firmware when the transceiver cannot
be updated by using Updater; for instance, when the transceiver
fails to start up due to the transceiver failure.
(1) Prepare the followings:
• Transceiver (NX-1200 or NX-1300)
• Battery jig
• Programming interface cable (KPG-22U)
• DC Power supply
(2) Disassemble the transceiver to the condition shown in the
figure. (Front case and chassis separation)
(3) Connect a transceiver, battery jig and programming
interface cable (KPG-22U).
(4) While FLDM terminal has a short-circuit with GND terminal
on the PCB, turn the DC Power supply output ON.
D300
R304
R305
C309
R147
R127
R126
C314 C322
SPO
R400 Q304
C317 S+
R300 C319
R303
C315
C301 F300 C329 IC301 IC302
C332
C327
C326
S-
C305 CP300
M-
D307
Q101
C405
Q102 C634
R639 R641 M+
R110 C635
C633
R114
C340
C342
R112 R109
C343 D306
C404 C629 R640
R701 5M CP703 Q311
5T R634
R700
R326
R328
TL301
D718
C345
CP704
C412
CP501
L700
IC402
RXD
C715 C411 C631
C714 IC700 R406
R702
R615
CP702
IC600
C608 R608 R647
R610 IC604
C609 R637
R726
R728
CP712 CP711 CP709 CP706 CP705 CP600
C628
R727 TL601
R633
32C
MIC
RXQ GND
TL202
VCO_OUT
C537 TL2
C538
TL517
TL518
TEST_RX
AUDIO
TEST_TX R81
TL519
C534 R82
R82
C535
R83
R83
R84
R85
SWDIO SWCLK
FLDM
TL514
TL512 TL506 TL500
TL509 R530
TL515
C430 TL520
VCC
SRST
TL400
RESET DVSS
PWR
TL402
CN400
C31
CN401 R38
TL1 R532
CV
R710
B+ D708 R709 D709 5C
BATT
R533
1-48 (No.RA077<Rev.001>)
FLDM
FLDM
TL506
TL512 TL500
C430
TL520
SRST
PWR
CN400
CN401
(5) Upon startup of FLDM loader, Red LED blinking.
(6) Start Updater for NX-1000 Series, select the COM port
number and speed, and then click the "Write" button.
Note:
High speed is for KPG-22U, for other cable please
select Normal speed.
(7) Upon completion of the firmware overwriting, Radio will be
re-start.
5.3

Replacing TX-RX Unit

TX-RX unit information
Model Name For Service TX-RX
unit Number
NX-1200D (K) XCA-075K-01
NX-1200DV (K)
NX-1200N (K) XCA-076K-01
NX-1200NV (K)
NX-1300D (K4) XCA-077K-01
NX-1300DU (K4)
NX-1300N (K4) XCA-078K-01
NX-1300NU (K4)
Method of confirming "Original TX-RX unit" and "Service
TX-RX unit"
Service TX-RX unit number by the marking seal is shown
in this area on the BLS.
Original TX-RX unit number is not shown.
Original TX-RX unit
Number
XC1-295K-01
XC1-296K-01