EFJohnson 001-9800-001, 001-9800-200, 9800 SERIES, 984X SERIES, 988X SERIES, 989X SERIES PA BOARD SCHEMATIC (40W, 470-512 MHZ)

February 2001

Part No. 001-9800-001

6-25

J602

R604

100

R611

4.7k

C640

47

C649

68 C648

100

CR602 R605

330

L605

C601

470 C600

.01uF

3

4

6

5

8

1

2

7

Unsw Bat

Out

C602

68

C653

68

HARMONIC FILTER

R603

220k

Antenna

Jack

J601

R607

56k

CR600

EP

C611

68

W602

C604

68 C603

.01uF

R601

10k

Current Sense

Temperature

T/R

Forward Power

UNSW BAT

FINAL AMP

J600

ANTENNA SWITCH

Q602

3658

J603

+

–

P001

R610

100

R609

100 R608

220k

CR603

C652

30

L606

C643

2.7

C655

3.0

C651

2.2

C650

22

R606

68k

C614

100 C625

2.7

C620

2.7

L603

C622

3.3 C623

3.3 C624

3.3

L604

C618

4.3 C626

4.3 C619

4.3 C628

3.0 C629

3.0 C630

1.5

L602

C644

6.8

C641

33

C631

33

L608 R612

100

EP603

C633

43 C645

39

Q600

4402

C632

27 C642

27 C646

27

C627

27

C616

24

DIRECTIONAL

COUPLER

RX RF OUT

EP

L607

EP602

R613

470

Q601

4402

C615

47 C638

47

C609

.01uF C610

100

EP

EP600 C606

100

+

C605

6.8uF

C617

47

L601

C612

.01uF C613

100

EP

EP601 C608

100 +C607

6.8uF

L600 R600

.03

C637

15 C634

2.7 C635

2.7

Power

Jack

CURRENT SENSE

UNSW BAT

R602

220k

CR601

DRIVER

.4 TX

13.6 RX

.7 TX

0 RX

SUPPLY V MINUS .24V

3A AT 40W

Tx RF From

C524 on

RF Board

To J501 On

RF Board

Rx RF To Receiver

C658

4.7

PA BOARD SCHEMATIC (40W, 470-512 MHZ)

Contents

Main SERVICE MANUAL 984XSERIES (UHF) 988 989XSERIES (900 MHZ) 98xx-SERIES FM TWO-WAY RADIO SERVICE MANUAL TABLE OF CONTENTS 1 GENERAL INFORMATION 2 INSTALLATION 3 CIRCUIT DESCRIPTION TABLE OF CONTENTS (CONTD) 4 SERVICING 5 PARTS LIST 6 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS LIST OF TABLES LIST OF FIGURES SECTION 1 GENERAL INFORMATION 242 - 9 8 x x -x Page Page UHF 984x SPECIFICATIONS 800 MHz 988x SPECIFICATIONS 900 MHz 989x SPECIFICATIONS SECTION 2 INSTALLATION WAR NI NG Page Page Page Page CAUTION Page Page SECTION 3 CIRCUIT DESCRIPTION Page 3-3 February 2001 Figure 3-1 Power Distribution and Switching POWER DISTRIBUTION (ALL MODELS) Note:Arrows Indicate Signal Flow. Figure 3-2 Power On-Off Control Circuit Interface Board (HighTier Only) Page Page Page Page Figure 3-3 Audio and Data Processing Circuitry Block Diagram AUDIO/LOGIC DESCRIPTION (ALL MODELS) 3-8 February 2001 RECEIVEAUDIO TRANSMITDATA Page Page Page Figure 3-4 RF Block Diagram (UHF Models) UHF SYNTHESIZER DESCRIPTION 3-13 February 2001 Synthesizer Receiver Power Amplifier Switching Page Page Page Page Page Page Page Page Figure 3-7 RF Block Diagram (800/900 MHz Models) 800/900 MHz SYNTHESIZER DESCRIPTION 3-23 February 2001 Synthesizer Receiver Power Amplifier Switching Page Page Page Page Page Page Page Page Page SECTION 4 SERVICING CAUTION Page Page Page Page SECTION 5 PARTS LIST FRONT PANEL ASSEMBLY AND MECHANICAL PARTS FRONT PANEL ASSEMBLY AND MECHANICAL PARTS (CONTD) UHF RF AND PA BOARDS UHF RF AND PA BOARDS Page Page Page Page Page Page Page Page Page Page Page Page Page Page 800/900 MHZ RF AND PA BOARDS 800/900 MHz RF AND PA BOARDS Page Page 800/900 MHz RF AND PA BOARDS (CONTD) Page Page Page AUDIO/LOGIC BOARD (ALL MODELS) AUDIO/LOGIC BOARD Page Page Page Page 9800-SERIES RADIO MOUNTING KIT PART NO. 023-9800-030 9800-SERIES REMOTE MOUNTING KIT PART NO. 023-9800-040 DC POWER CABLE AND HARDWARE KIT PART NO. 023-9800-410 (10 Ft) PART NO. 023-9800-422 (22 Ft) ACCESSORY WIRE KIT PART NO. 023-9750-011 AMPLIFIED DYNAMIC MICROPHONE PART NO. 250-0740-300 FRONT PANEL EXPLODED VIEW FRONT AND TOP MECHANICAL PARTS BOTTOM MECHANICAL PARTS 5-32 5-33 REMOTE CONTROL UNIT MECHANICAL PARTS REMOTE TRANSCEIVER MECHANICAL PARTS TRANSISTOR AND DIODE BASING DIAGRAMS SECTION 6 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS TRANSISTORS Part Number Basing Diagram Identification DIODES Page Page 6-4 PA BOARD AUDIO / LOGIC BOARDRF BOARD 7A 8B P1 1 INTERCONNECT SCHEMATIC J3 1 21J2 19 20 S1 2 DISPLAY BOARD TOP VIEW DISPLAY BOARD BOTTOM VIEW 6-6 February 2001 Part No. 001-9800-001 R17 RPI (P.N. 023-9800-000) BOARD LAYOUT A 1 2 3 4 5 6 B RPI (P.N. 023-9800-000) SCHEMATIC A 1 2 3 4 5 6 B Orange Black Red Green Yellow Blue Grey Brown RF BOARD COMPONENT LOCATOR GUIDE (UHF) Page Page RF BOARD COMPONENT LOCATOR GUIDE (800/900 MHZ) Page Comp. Location AUDIO/LOGIC BOARD COMPONENT LOCATOR GUIDE Page Comp. Location 6-15 EXCITER RF BOARD SCHEMATIC (REVISED 430-470 MHZ) PA BOARD SCHEMATIC (25W, 430-470 MHZ) 6.6 NOTES: 1. POWER CONTROL 5 A 1 RF BOARD LAYOUT (430-512 MHZ) 2 3 VCO BOARD LAYOUT (430-512 MHZ) PA BOARD LAYOUT (25W, 430-512 MHZ) 6-18 .4 TX 13.6 RX PA BOARD SCHEMATIC (40W, 430-470 MHZ) PA BOARD LAYOUT (40W, 430-512 MHZ) 6-19 February 2001 6-20 EXCITER RF BOARD SCHEMATIC (UNREVISED 430-470 MHZ) 0.5V RF 5.8 13 .4 5 A B CA Go To Page 6-22 C575 C544 RF BOARD SCHEMATIC (470-512 MHZ) PA BOARD SCHEMATIC (25W, 470-512 MHZ) 6.6 NOTES: 1. POWER CONTROL 5 A 1 RF BOARD LAYOUT (430-512 MHZ) 2 3 800/900 MHz RF Board Schematic C119 PA BOARD LAYOUT (25W, 430-512 MHZ) Q102 VCO BOARD LAYOUT (430-512 MHZ) PA BOARD SCHEMATIC (40W, 470-512 MHZ) .7 TX 0 RX 6-26 February 2001 PA BOARD LAYOUT (40W, 430-512 MHZ) Go To Page 6-27 6-27 EXCITER RF BOARD SCHEMATIC (800/900 MHZ) PA BOARD SCHEMATIC (15W, 800/900 MHZ) NOTES: POWER CONTROL SYNTHESIZER RECEIVER 2 ABC 1 RF BOARD LAYOUT (800 MHZ) 3 4 2 6-29 February 2001 A900 VCO RF BOARD LAYOUT (900 MHZ) 3 VCO BOARD LAYOUT (800/900 MHZ) PA BOARD LAYOUT (15W , 800/900 MHZ) PA BOARD SCHEMATIC (30W, 800/900 MHZ) 6-31 6-32 February 2001 J601 PA BOARD LAYOUT (30W , 800/900 MHZ) U600 Q651 6-33 29 AUDIO/LOGIC BOARD SCHEMATIC 26 97 NOTES: TRANSMIT DATA RECEIVE AUDIO 3 45 AUDIO/LOGIC BOARD LAYOUT C B 3 4 5 A A B