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HP 9800 POWER DISTRIBUTION (ALL MODELS), Figure 3-2Power On-OffControl Circuit, Figure 3-1Power Distribution and Switching

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CIRCUIT DESCRIPTION

POWER DISTRIBUTION (ALL MODELS)

		Power Amplifier			Unsw Bat		RF Board		Unsw Bat	Audio/Logic
			Board		Unsw Bat			J201	J302	Board
			Board					J201	J302	Board
						R533		4	2
		Transceiver				R533	Sw Bat
Power		Transceiver					Sw Bat			5V
		Power	Unsw Bat			Switch			Sw Bat	5V	Vcc
	15A	Power	Unsw Bat		F500				Sw Bat		Vcc
Cable	15A	Connector	J600	J501	F500				Regulator
Cable	Fuse	Connector			4A			Sw Bat
	Fuse				4A			Sw Bat		U105
			1			Q510		10	5	U105
			CR600					8V
			2			High Tier	8V	8V	8V	F100
						High Tier	Regulator		8V	F100
							Regulator			2A
										2A
			Transient		Front Panel		U501	11 15		Sw Bat
			Suppressor		Front Panel
						On-Off Sw			11	J100
				On-Off Sw			8V Tx	8V Tx	11	12
+						On-Off	8V Tx	8V Tx	Interface	J3
						On-Off	Switch		Interface	J3
						Latch	Switch		Board
	Chassis					Latch			Board	Sw Bat
Vehicle	Chassis					(A/L Bd)	Q504			Sw Bat
Vehicle	Ground			Low Tier					R2
Battery	Ground
Battery						From Shift		High			J1
						From Shift		High	J2		J1
						Reg U801	5.5V	Tier Only	2	5
							5.5V	5.5V	J1
						From Latch	Regulator		Sw Bat	Microphone
						U112 A/L Bd				Microphone
						U112 A/L Bd	U502			Jack
							U502		Display Board	Jack
									Display Board

Figure 3-1 Power Distribution and Switching

Interface Board	Audio/Logic Board					RF Board
Interface Board
(High Tier Only)	Power Switch		Ignition On			Supply
	Sense		Sense			Supply
	Q107	To uC,	Q108	To uC,		Switching	Sw Bat
		To uC,		To uC,		Circuit	Sw Bat
		Pin 60		Pin 62		Circuit
		Pin 60		Pin 62		Unsw Bat
Front Panel						Unsw Bat
Front Panel						Q510
On-Off Sw		Q109				Q510
On-Off Sw	J100	Q109		J302	J201
J3	J100			J302	J201
1	20				18	5
Power On-Off Latch				Q110
U113A-D				Q110
U113A-D	Unsw Bat
Low Tier Only	Unsw Bat
Low Tier Only

R170

From Ignition

Power Hold

From Shift Reg

SwitchU111, Q7 Note: Arrows Indicate Signal Flow.

This Resistor Installed If

Ignition Sense Not Connected

Figure 3-2 Power On-Off Control Circuit

filtering of the 13.6-volt supply. The emitter of Q513 is biased at about 4.5 volts by R538 and R542 (with a battery voltage of 13.6 volts). CR504 mirrors the base- emitter voltage of Q513, and the voltage across R541 is the same as the voltage across R542 when the voltage applied to R536 is approximately 12.8 volts.

Noise pulses less than 1.6 volt P-P then do not appear on the output of Q510 because of the emitter

voltage filtering provided by C565. This reduces the amount of noise applied to circuits powered by the switched 13.6-volt supply such as audio power amplifier U306. Additional filtering of the switched and unswitched battery supplies is provided by C548- C553. Resistor R534 turns Q514 off when power is turned off.

	February 2001
3-3	Part No. 001-9800-001

Contents

25 or 40 Watts (UHF); 15 or 30 Watts (800/900 MHz) 13.6 VDC Part No 13.6 VDC 25 or 40 Watts, UHF 15 or 30 Watts, 800/900 MHz Part No. 242-984x-2xx(UHF) Part No. 242-988x-2xx(800 MHz) TABLE OF CONTENTS 1 GENERAL INFORMATION 3 CIRCUIT DESCRIPTION 2 INSTALLATION TABLE OF CONTENTS (CONT’D) 4 SERVICING 5 PARTS LIST 6SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS LIST OF TABLES LIST OF FIGURES SECTION 1 GENERAL INFORMATION 1.3 PART NUMBER BREAKDOWN Table 1-1Part Number Breakdown 1.4 TRANSCEIVER IDENTIFICATION Table 1-2Identification Number Breakdown Type 1.5 ACCESSORIES Table 1-398xx Accessories Accessory Cable Data/Accessory Cable Desktop Accessories 1.6 PRODUCT WARRANTY 1.7 FACTORY CUSTOMER SERVICE 1.8 FACTORY RETURNS 1.9 REPLACEMENT PARTS 1.10 INTERNET HOME PAGE UHF 984x SPECIFICATIONS 800 MHz 988x SPECIFICATIONS 900 MHz 989x SPECIFICATIONS SECTION 2 INSTALLATION 2.2 MOUNTING THE TRANSCEIVER WARNING Item Figure 2-2Remote Mount Installation Components 2.3 POWER CABLE INSTALLATION Figure 2-3Accessory Cable Installation 2.4 ACCESSORY CABLE INSTALLATION Function Figure 2-4Accessory Cable Connector Figure 2-5R170 Location Diagram Sw Bat Out (pin 2) Horn Alert (pin 4) - See Section Ignition Sense (pin 6) - See Section Output D (pin 7) 2.5 REMOTE CONTROL UNIT INSTALLATION Figure 2-6Data Cable Installation (-001Cable Shown) 2.6 USING AN EXTERNAL SPEAKER 2.7 DATA CABLE INSTALLATION CAUTION Table 2-1Data Cable Wire Chart J301 Pin No Wire Color 2.8 KEY CAP KITS EMER F1 F2 F3 SCAN SCAN BKLHT MSG HORN SECTION 3 CIRCUIT DESCRIPTION POWER DISTRIBUTION (ALL MODELS) 3.2 POWER DISTRIBUTION AND SWITCHING Figure 3-1Power Distribution and Switching Figure 3-2Power On-OffControl Circuit AUDIO/LOGIC DESCRIPTION (ALL MODELS) 3.3 AUDIO/LOGIC BOARD DIGITAL CIRCUIT VRH/VRL PE0 PE1 PE2 PE3 PA0 PA1 PA2 PA3 PA4/PA5 3.4 RECEIVE AUDIO/DATA PROCESSING Figure 3-3Audio and Data Processing Circuitry Block Diagram 3.5 TRANSMIT AUDIO/DATA PROCESSING 3.6 DISPLAY BOARD DISPLAY DESCRIPTION 3.7SYNTHESIZER CIRCUIT DESCRIPTION (UHF MODELS) UHF SYNTHESIZER DESCRIPTION 4-3Figure Diagram Block RF Models) (UHF DESCRIPTION SYNTHESIZER UHF DESCRIPTION CIRCUIT Page Page Figure 3-5Synthesizer Chip U804 Block Diagram 3.8RECEIVER CIRCUIT DESCRIPTION (UHF MODELS) UHF RECEIVER DESCRIPTION Figure 3-6Limiter/Detector U201 Block Diagram UHF TRANSMITTER DESCRIPTION 3.9TRANSMITTER CIRCUIT DESCRIPTION (UHF MODELS) Page Page 800/900 MHz SYNTHESIZER DESCRIPTION 3.10SYNTHESIZER CIRCUIT DESCRIPTION (800/900 MHz MODELS) 7-3Figure Models) MHz (800/900 DESCRIPTION SYNTHESIZER MHz 800/900 Normal Mode Talk-AroundMode Page Page Page 800/900 MHz RECEIVER DESCRIPTION 800/900 MHz TRANSMITTER DESCRIPTION 3.12TRANSMITTER CIRCUIT DESCRIPTION (800/900 MHz MODELS) Page Page Page SECTION 4 SERVICING American EIA Standard Japanese EIA Standard (pF) Color Multi Figure 4-1Simplified Synthesizer Block Diagram 4.3 SYNTHESIZER TROUBLESHOOTING Table 4-2SMD Inductor Identification Mode Supply Voltage Output Level Control Voltage VCO RF In (pin 6) Overall Div No. (K) = VCO freq ÷ “A” Divide No “N” Divide No Fractional-NDiv No. = (Fraction K) x 4.4RECEIVER SERVICING SECTION 5 PARTS LIST FRONT PANEL ASSEMBLY AND MECHANICAL PARTS FRONT PANEL ASSEMBLY AND MECHANICAL PARTS (CONT’D) UHF RF AND PA BOARDS UHF RF AND PA BOARDS (CONT ’D) 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 (CONT ’D) Page Page Page Page Page AUDIO/LOGIC BOARD (ALL MODELS) AUDIO/LOGIC BOARD (CONT’D) Page Page Page 9800-SERIESRADIO MOUNTING KIT 9800-SERIESREMOTE MOUNTING KIT DC POWER CABLE AND HARDWARE KIT PART NO. 023-9800-410(10 Ft) PART NO. 023-9800-422(22 Ft) FRONT PANEL EXPLODED VIEW FRONT AND TOP MECHANICAL PARTS BOTTOM MECHANICAL PARTS REMOTE TRANSCEIVER MECHANICAL PARTS REMOTE CONTROL UNIT MECHANICAL PARTS SECTION 6 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS TRANSISTOR AND DIODE BASING DIAGRAMS Page Page CAUTION: INTERFACE BOARD LAYOUT INTERCONNECT SCHEMATIC DISPLAY BOARD TOP VIEW DISPLAY BOARD BOTTOM VIEW PROGRAMMING CABLE (P.N. 597-2002-200) RPI (P.N. 023-9800-000)BOARD LAYOUT RPI (P.N. 023-9800-000)SCHEMATIC RF BOARD COMPONENT LOCATOR GUIDE (UHF) UHF RF BOARD COMPONENT LOCATOR GUIDE (CONT’D) ’D) RF BOARD COMPONENT LOCATOR GUIDE (800/900 MHZ) Page Page Page Page RF BOARD SCHEMATIC (REVISED 430-470MHZ) PA BOARD SCHEMATIC (25W, 430-470MHZ)