Kenwood NX-800 BS BT BU BV BW

NX-800 SCHEMATIC DIAGRAM

1.34V

6.38V

13.54V

AUXIO7/BER DT

AUXIO6/BER CK

C611

1000p

C597

1000p

AUXIO9/CTS

F501

C609 1000p

C610 100p

3

4

5

1

2

NC/RSSI

SB

SB

SB

SB

7

8

9

10

6

DI/RTS

50C

SB

AFO

SB

C608 100p

R654

0

C607 1000p

C606 1000p

RXD016

11

12

13

14

15 GND

GND

DEO

MI2

ME

20

17

18

19 AUXO1

AUXO2

TXD0

AUXIO227

C605 1000p

C604 1000p

C603 1000p

C602 1000p

C601 1000p

21

22

23 AUXIO4

AUXIO5

AUXIO8

24

25

26

TXD2/AUXIO9

RXD2/DI

AUXIO3

C600 1000p

C599 1000p

C598 1000p

CN600

28

29

30

AUXIO1

D914

02DZ18F-X,Y

D910

02DZ18F-X,Y

C922

1000p

R914

C907

1000p

R901

DC SW

(AUXO1)

470

A(AUXO1)

DC SW

470

A

D911

D907

DA204U

DA204U

D903

D901

DA204U

DA204U

OVER DC

SUPPLY PROTECTION

PREVENTION

02DZ18F-X,Y

26

27

29

28

30

C903 100p

C901 100p

A

21

23

25

24

22

02DZ18F-X,Y

D906

AA

CURRENT

(SB)

REVERSE

Q901

QSX6

AA

15

18

17

16

19

20

A

12

11

14

13

D905

C902

1000p

C906

C905

100p

AAA

Q902

QSX6

D909

1SS355

L902

D913

1SS355

100p

470

C904

100p

L901

C908

100p

470

470

C910 100p

C909 100p

C921 100p

4

8

9

10

7

6

5

CN901

2

1

3

DA204U

D902

D904

DA204U

D908

DA204U

470

470

470

470

470

470

C918 100p

C919 100p

C920 100p

C917 100p

C916 100p

C915 100p

C914 100p

100

100

470

D912

DA204U

A

C913 100p

C912 100p

C911 100p

J901

C923

1000p

A

(BER CK)

(BER DT)

D902

D901

LINE

PROTECTION

(AUXIO3)(AUXIO1)

(AUXIO2)

D904

(AUXIO4)

D908

D903 D907

(AUXIO8)

(AUXIO5)

D912

D911

J701

0

C810

470p

EXT.SP

HOR

PA

GND

SPO

SPI

SB

6

2

3

4

5

1

1000p

SPO

C811

R831

PROTECTION

LINE

PROTECTION

LINE

PROTECTION

LINE

PROTECTION

LINE

PROTECTION

LINE

PROTECTION

LINE

PROTECTION

LINE

SUPPLY

OVER DC

PROTECTION

PROTECTION

OVER DC

SUPPLY

OVER DC

PROTECTION

SUPPLY

(SB)

REVERSE

CURRENT

PREVENTION

13

12

24

23

10

22

9

21

8

20

4

3

2

19

6

25

5

17

16

15

2

15

3

16

4

17

5

6

19

20

8

21

9

22

10

23

24

12

25

13

27

26

1

14

2

15

3

16

4

17

5

18

6

19

7

20

8

21

9

22

10

23

11

24

12

25

13

AIO6

AIO7

AIO1

AIO2

AIO3

AIO4

AIO8

AIO5

AIO9

AO1

AO2

AIO7

AIO6

R912

R913

R908

R909

R910

R911

R905

R907

R906

R904

R903

R902

CN705

HOR

PA

SB

50C

AFO

DI/RTS

DEO

MI2

ME

RXD0

TXD0

TXD2/AUXIO9

RXD2/DI

SB

MI1

MEME

MI1

1000p

C809

2

3

5

4

C803

1000p

1000p

C804

C806

330u16

1000p

C807

47u25

C805

OUT

GND2

GND1

IN

1

IC715

LA4425A

VCC

2A

+

+

D-SUB25

9 99

12

9

X57-739 15/16

BS BT BU BV BW

TX-RX UNIT (X57-7390-10)

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