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Kenwood NX-800 TX-RX unit (X57-7390-10) : NX-800, Display unit (X54-3640-10)

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NX-800

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TX-RX unit (X57-7390-10) : NX-800

Ref. No. Part Name Description

IC1 MOS-IC Temp sensor

IC2 MOS-IC Buffer AMP (TCXO modulation)

IC3 MOS-IC PLL IC

IC4 MOS-IC Buffer AMP (VCO tune)

IC5 MOS-IC VCO modulation/Buffer AMP (CV)

IC101 MOS-IC Auto Power Control

IC102 MOS-IC Final AMP (RF Power Module)

IC103 MOS-IC Auto Power Control

IC201 MOS-IC Buffer AMP (2nd IF DET)

IC202 ANALOGUE IC IF IC

IC203 MOS-IC Buffer AMP (RSSI/VAGC)

IC204 MOS-IC 1st Mixer

IC205 MOS-IC Buffer AMP (BPF tune)

IC206 MOS-IC Buffer AMP (BPF tune)

IC401 MOS-IC Voltage Detector (BINT)

IC402 MOS-IC Voltage regulator (33M)

IC403 MOS-IC Voltage regulator (80C)

IC404 MOS-IC Voltage regulator (50C)

IC405 ANALOGUE IC DC/DC Converter (50M)

IC406 BI-POLAR IC Voltage regulator (33C)

IC407 MOS-IC Voltage regulator (33GPS)

IC408 MOS-IC Voltage regulator (33A)

IC409 MOS-IC Voltage regulator (15M)

IC410 ANALOGUE IC DC/DC Converter (150C)

IC501 ROM IC FLASH ROM

IC502 MCU DSP(BGA)

IC503 SRAM IC SRAM(BGA)

IC504 MOS-IC RTC

IC505 MOS-IC DELAY

IC506 MOS-IC RESET(CPU)

IC507 MOS-IC Bus Buffer (BFSX2)

IC508 MOS-IC Buffer AMP (18.432MHz)

IC509 MOS-IC

Bus Buffer (BER CLK/BER DATA)

IC510 MOS-IC MCU (BGA)

IC511 MOS-IC AND (PCS_RF/HD2)

IC512 MOS-IC

LEVEL SHIFT (AND ITXD1/SCTXD)

IC513 MOS-IC Buffer AMP (TXD2)

IC514 MOS-IC LEVEL SHIFT (I2CCK/I2CDT)

IC515 MOS-IC LEVEL SHIFT (TXDO/RTSO)

COMPONENTS DESCRIPTION

Display unit (X54-3640-10)

Ref. No. Part Name Description

IC901 MOS-IC AFO/BLC SW

IC902 MOS-IC AF Buffer AMP (AFO)

IC903 MOS-IC Voltage regulator (5C)

IC904 MOS-IC Voltage regulator (33C)

IC905 MOS-IC Bus Buffer (TXD0)

IC906 MOS-IC DC/DC Converter (N100C)

IC907 MOS-IC Dual Bus Buffer (RXD0/RXD1)

IC908 MOS-IC AND Gate (TXD1/RXD0)

IC909 MOS-IC Buffer AMP (LCD Contrast ADJ)

IC910 MOS-IC Bus Buffer (D0-D7)

IC911 MOS-IC MCU

IC912 MOS-IC Bus Buffer (A1-A2)

IC913 ROM IC Flash ROM

Q901 FET AFO SW

Q902 TRANSISTOR HK/RXD0 SW

Q904 TRANSISTOR HK/RXD0 SW

Q905 TRANSISTOR TX/RX LED (TX)

Q906 TRANSISTOR TX/RX LED (BUSY)

Q908 TRANSISTOR LCD BACK LIGHT SW

Q909 TRANSISTOR DIMER SW (LCD BACK LIGHT)

Q910 TRANSISTOR LCD BACK LIGHT SW

Q911 FET DIMER SW (LCD BACK LIGHT)

Q913 FET LCD RESET SW

D901 VARISTOR Surge absorption (DM/KVL)

D902 VARISTOR Surge absorption (HK/RXD)

D903 ZENER DIODE OVER DC Supply protection

D904 VARISTOR Surge absorption (BLC/AFO)

D906 VARISTOR LINE protection (SB)

D907 ZENER DIODE OVER DC Supply protection

D908 DIODE KEY MATRIX

D910 DIODE

Reverse Current Prevention (HK/RXD)

D911,912 DIODE KEY MATRIX

D913 DIODE LINE protection (PTT/TXDO)

D914 LED TX/RX LED

D915~926 LED LCD BACK LIGHT

D927~936 LED KEY BACK LIGHT

D937 DIODE LEVEL SHIFT (PRST)

Contents

Main UHF DIGITAL TRANSCEIVER NX-800 SERVICE MANUAL CONTENTS Document Copyrights Disclaimer GENERAL PERSONAL SAFETY PRE-INSTALLATION CONSIDERATIONS 1. UNPACKING 2. LICENSING REQUIREMENTS GENERAL SERVICE NOTE SYSTEM SET-UP 1. Modes 2. How to Enter Each Mode 3. Panel Test Mode 4. Panel Tuning Mode Fig. 1 6. Firmware Programming Mode 6-1. Preface 6-2. Connection procedure Note : 6-3. Programming 8. Firmware Version Information NX-800 1. Ignition Sense Cable (KCT-46 : Option) r y Fig. 2-4 2. Horn Alert/P.A. Relay Unit (KAP-2 : Option) q w e Fig. 2-1 Fig. 2-2 Fig. 2-3 3. Fig. 3-2 Install the KRK-10 main panel onto the transceiver w q 4. Voice Guide & Storage Unit (VGS-1 : Option) 4-1. Installing the VGS-1 unit in the transceiver Fig. 5-3 KAP-2 Cable (E37-1113-15) 6-pin Connector Fig. 5-2 5. External Speaker (Option) 5-1. KES-3 Connection Procedure 5-2. KES-5 or KES-6 Fig. 5-1 6. GPS Receiver Connection 6-1. Installing the GPS receiver Fig. 6-4 6-2. Fig. 6-5 Installing the GPS receiver together with the VGS-1 r 1. Precautions on Disassembly e r Top packing installation procedure w 2. Precautions on Reassembly Fig. 3 TX-RX PCB (TX-RX unit A/2) Reassembly w q Page 3. Receiver System 3-1. RF circuit Fig. 2 1. Overview Fig. 1 Frequency configuration 3-3. IF circuit 3-4. Audio amplifier circuit Fig. 4 3-5. Squelch Circuit Fig. 3 4. Transmitter System 4-1. Audio Band Circuit 4-2. Base Band Circuit Fig. 5 5. PLL Frequency Synthesizer 5-1. VCTCXO (X1) Fig. 7 5-2. VCO 5-3. PLL IC (IC3) 6. Control Circuit 6-1. CPU 6-2. Memory Circuit 6-3. Display Unit 6-4. Key Detection Circuit 8. Signaling Circuit Fig. 8 8-1. Encode (QT/DQT/DTMF/MSK/2TONE) 8-2. Decode (QT/DQT/DTMF/2TONE/MSK) 9. Compander Circuit TX-RX unit (X57-7390-10) : NX-800 Display unit (X54-3640-10) Page Page CAPACITORS CC 45 TH 1H J220 12346 5 1 C RESISTORS NX-800 NX-800 (Y51-5150-XX) DISPLAY UNIT (X54-3640-10) DISPLAY UNIT (X54-3640-10) TX-RX UNIT (X57-7390-11 for service) DISPLAY UNIT (X54-3640-10) Page Page Page Page Page Page Page Page Page TX-RX UNIT (X57-7390-11) EXPLODED VIEW PACKING CD Parts with the exploded numbers larger than 700 are not supplied. 1 2 TROUBLE SHOOTING Fault diagnosis of the BGA (Ball Grid Array) IC TROUBLE SHOOTING Controls KMC-36 Temperature [PTT] Panel Test Mode Panel Tuning Mode Preparations for tuning the transceiver Transceiver tuning (To enter tuning mode) LCD display in panel tuning mode An CNTR 256 5 reference level adjustments frequency Key operation Adjustment item and Display Page Panel tuning mode flow chart Test Equipment Required for Alignment MIC connector (Front panel view) Test cable for microphone input (E30-3360-08) Tuning cable (E30-3383-05) Radio Check Section Common Section Transmitter Section Page Page Page Page Receiver Section Mode, Signaling, Necessary adjustment and order Page Page Page Page Display unit (X54-3640-10) TX-RX unit (X57-7390-10) (A/2) TX-RX unit (X57-7390-10) (B/2) Solder Land Page Page CN595 26-pin connector specification Page D-sub 25-pin connector specification Page PC BOARD NX-800 TX-RX UNIT (X57-7390-10) (B/2) Component side view (J79-0130-19 B/2) TX-RX UNIT (X57-7390-10) (B/2) Foil side view (J79-0130-19 B/2) JIHGFEDCBA JKLMNOPQRS TX-RX UNIT (X57-7390-10) (A/2) Page JKLMNOPQRS JIHGFEDCBA DISPLAY UNIT (X54-3640-10) Foil side view (J79-0157-19) TX-RX UNIT (X57-7390-10) ABCDE 1 2 X57-739 1/16 3 4 FGHIJ X57-739 2/16 NX-800 X57-739 3/16 KLMNO X57-739 4/16 PQRST X57-739 5/16 UVWXY X57-739 6/16 ZAA AB AC AD X57-739 7/16 AE AF AG AH AI X57-739 8/16 AJ AK AL AM AN X57-739 9/16 AO AP AQ AR AS X57-739 10/16 AT AU AV AW AX X57-739 11/16 AY AZ BA BB BC X57-739 12/16 BD BE BF BG BH X57-739 13/16 BI BJ BK BL BM TX-RX UNIT (X57-7390-10) X57-739 14/16 BN BO BP BQ BR C611 GND1 GND2 OUT BS BT BU BV BW TX-RX UNIT (X57-7390-10) DISPLAY UNIT (X54-3640-10) X57-739 16/16, X54-364 1/3 BX BY BZ CA CB Note : The components marked with a dot () are parts of layer 1. X54-364 2/3 CC CD CE CF CG DISPLAY UNIT (X54-3640-10) LCD CLCKCJCICH 1 Note : The components marked with a dot () are parts of layer 1. DISPLAY UNIT (X54-3640-10) 2 3 4 INTERCONNECTION DIAGRAM CN901 LCD X54-364*-** DISPLAY UNIT CN905 INTERCONNECTION DIAGRAM RA30H4452M123 X57-739*-** CN549 B/2 Page BLOCK DIAGRAM Ripple TEMP MCF LNA LEVEL DIAGRAM Receiver Section Transmitter Section LEVEL DIAGRAM 4 SPECIFICATIONS GENERAL RECEIVER TRANSMITTER PC BOARD NX-800 TX-RX UNIT (X57-7390-10) (B/2) Component side view (J79-0130-19 B/2) TX-RX UNIT (X57-7390-10) (B/2) Foil side view (J79-0130-19 B/2) JKLMNOPQRSIHGFEDCBA 72 73 JKLMNOPQRSIHGFEDCBA 74 75 76 77 Note : The components marked with a dot () are parts of layer 1. TX-RX UNIT (X57-7390-10) DISPLAY UNIT (X54-3640-10) TX-RX UNIT (X57-7390-10) D-SUB25 INTERCONNECTION DIAGRAMINTERCONNECTION DIAGRAM RA30H4452M123 LCD CN549 LA4425A BLOCK DIAGRAMBLOCK DIAGRAM Ripple TEMP SW CD IC510 LEVEL DIAGRAMLEVEL DIAGRAM 4