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
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UHF 984x SPECIFICATIONS
800 MHz 988x SPECIFICATIONS
900 MHz 989x SPECIFICATIONS
SECTION 2 INSTALLATION
WAR NI NG
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CAUTION
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SECTION 3 CIRCUIT DESCRIPTION
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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)
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Figure 3-3 Audio and Data Processing Circuitry Block Diagram
AUDIO/LOGIC DESCRIPTION (ALL MODELS)
3-8 February 2001
RECEIVEAUDIO
TRANSMITDATA
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Figure 3-4 RF Block Diagram (UHF Models)
UHF SYNTHESIZER DESCRIPTION
3-13 February 2001
Synthesizer
Receiver
Power Amplifier
Switching
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Figure 3-7 RF Block Diagram (800/900 MHz Models)
800/900 MHz SYNTHESIZER DESCRIPTION
3-23 February 2001
Synthesizer
Receiver
Power Amplifier
Switching
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SECTION 4 SERVICING
CAUTION
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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
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800/900 MHZ RF AND PA BOARDS
800/900 MHz RF AND PA BOARDS
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800/900 MHz RF AND PA BOARDS (CONTD)
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AUDIO/LOGIC BOARD (ALL MODELS)
AUDIO/LOGIC BOARD
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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
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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)
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RF BOARD COMPONENT LOCATOR GUIDE (800/900 MHZ)
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Comp. Location
AUDIO/LOGIC BOARD COMPONENT LOCATOR GUIDE
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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
