Kenwood NX-900 Service Manual

Also see for NEXEDGE NX-900: Function reference Instruction manual Instruction manual

NX-90043TROUBLE SHOOTINGReplacing TX-RX Unit■ TX-RX Unit InformationModel Name OriginalTX-RX Unit NumberFor ServiceTX-RX Unit NumberNX-900 (K) X57-8060-10 X57-8060-11■ Method of confirming “Original TX-RX unit” and“Service TX-RX Unit”R880R881X57-806 A/2Component sideSilk printCN595The 0Ω resistor (R881) ismounted on the “0-11”silk print part of theService TX-RX unit(X57-8060-11).■ Supplied Accessories of “Service TX-RX Unit”Item (Including Part Number) QuantityTX-RX Unit (X57-806) 1Kenwood ESN Label 1NXDN ESN Label 1MPT ESN Label 1Addendum (B59-2576-XX) 1■ “Service TX-RX Unit” DataThe following data is written on the service unit:• Firmware• FPU Data• Various Adjustment Data• Kenwood ESN (“S” is given after the model name.)• NXDN ESN / MPT ESN■ Printed Circuit Board DataThe following data is written on the printed circuit board:Data Type DescriptionFirmware NX-900 Firmware.FPU Data(PC programming mode) X57-806 (NX-900) K type data.Various Adjustment Data(PC Test mode)General adjustment values for theX57-806 (NX-900).Kenwood ESNModel Name: [X57-806] NX-900SType: KThe same number as the KenwoodESN label is written.NXDN ESN/ MPT ESN The same number as the NXDNESN/ MPT ESN label is written.■ After Changing the PCB1. After changing the printed circuit board, write the up-to-date Firmware following the instructions in the “RE-ALIGNMENT - 6.Firmware Programming Mode”.2. Using the KPG-111D, select your desired item (ModelName 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).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 printedcircuit board. (Refer to the images below for label place-ment.)5. If necessary, write the FPU data used by the customerwith the KPG-111D.Note:• When using the ESN Validation function of NXDN Trunk-ing, the NXDN ESN number changes when the circuitboard is changed (the number is written on the circuitboard); the NXDN Trunking System cannot be accessed.Use the KPG-110SM on the NXDN Trunking System sideto reprogram the NXDN ESN number.• When a new printed circuit board is used, the KenwoodESN changes, as does the Transceiver information dis-play of the KPG-111D, but this does not have any effecton the operation of the transceiver.• If changing to the original Kenwood ESN, NXDN ESN andMPT ESN, please contact our service center.■ ESN Label LayoutNX-900MPT ESN LabelNXDN ESN LabelKenwoodESN Label(Not used)(Not used)Note: A UPC code and UPC barcode is not printed on theKenwood ESN Label. If necessary, cut the label at the cut-off line and attach only the serial number.