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PRELIMINARY SERVICE
Series
MANUAL
SMARTNET™/SMARTZONE® PORTABLE
7780
778x (800 MHz)
SMARTNET™/SmartZone®/Conventional
7.5VDC,1and3Watts
806-824 MHz Transmit
851-870 MHz Receive
Part No. 242-778x-50x
Full Keypad (15-Key) Model Limited Keypad (3-Key) Model
First Printing
November 1999
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7780-SERIES ® ™ SMARTNET /SMARTZONE /CONVENTIONAL FM TWO-WAY PORTABLE RADIO 7.5 VDC 806-824 MHz Transmit, 851-870 MHz Receive 1-Watt (Low Power), 3-Watts (High Power) Part No. 242-778x-50x Copyright ©1999 by the E.F. Johnson Company E.F. Johnson Company, which was founded in 1923, designs, manufactures, and markets radio communication products, systems, and services worldwide. E.F. Johnson produces equipment for land mobile radio and mobiletelephone services which include business, industrial, g
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TABLE OF CONTENTS TABLE OF CONTENTS Keypad Lock ............................ 2-4 1 GENERAL INFORMATION LowBatteryIndication .................... 2-5 ChannelandZoneSelection . ............... 2-5 1.1 SCOPE OF MANUAL....................1-1 Home Zone ............................. 2-5 1.2 EQUIPMENT DESCRIPTION .............1-1 Time-OutTimer.......................... 2-5 Introduction............................. 1-1 Tone Enable/Disable ...................... 2-6 OperatingProtocols ...................
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TABLE OF CONTENTS TABLE OF CONTENTS (CONT’D) 4.2 SYNTHESIZER DESCRIPTION PCTrunkSoftware Installation.............. 3-1 ........... 4-1 Connecting RPI To Computer and Transceiver . 3-2 Introduction............................. 4-1 Starting and Exiting . . . . . . . . . . . . . . . . . . . . . . 3-2 VCO(IC3),Buffers(Q10-Q12) ............. 4-1 ProgrammingFile Types .................. 3-2 VCOAnd TCXO Modulation............... 4-2 Help Files .............................. 3-2 SynthesizerChip(IC1) ..
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TABLE OF CONTENTS TABLE OF CONTENTS (CONT’D) 6.3 MODULATION BALANCE ................6-4 LIST OF TABLES 6.4 AUDIO DEVIATION ......................6-5 6.5 DATA DEVIATION .......................6-5 1-1 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 6.6 SQUELCH ADJUST .....................6-5 1-2 MaterialClassification .................... 1-6 6.7 RSSI ADJUST ..........................6-5 1-3 AreaClassification ....................... 1-6 6.8 RECEIVER PERFORMANCE TESTS ...
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GENERAL INFORMATION SECTION 1 GENERAL INFORMATION 1.1 SCOPE OF MANUAL models is also used to service these models. Refer to Section 1.10 for more information on the intrinsically This service manual contains operating, program- safe rating and additional requirements for servicing ming, alignment, and service information for the E.F. intrinsically safe models. Johnson 7780 800 MHz portable transceiver. 1.2.4 SYSTEMS, CHANNELS, AND ZONES 1.2 EQUIPMENT DESCRIPTION A zone and channel are selected t
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GENERAL INFORMATION RIFKDQQHOVGHFUHDVHVDVWKHQXPEHURI6PDUW1HW 1.3 PART NUMBER BREAKDOWN V\VWHPVLQFUHDVHV7KHSURJUDPPLQJVRIWZDUH GLVSOD\VDEDUJUDSKZKLFKVKRZVWKHDPRXQWRIDYDLO 7KHIROORZLQJLVDEUHDNGRZQRIWKHSDUWQXPEHU DEOHPHPRU\VSDFHWKDWLVXVHGE\WKHFXUUHQWGDWD XVHGWRLGHQWLI\WKLVWUDQVFHLYHU 5HIHUWR6HFWLRQ IRUPRUHLQIRUPDWLRQ [[[ =RQHV 0+] $]RQHLVDFROOHFWLRQRIXSWRFKDQQHOVRIDQ\ 6WDQGDUG
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GENERAL INFORMATION Table 1-1 Accessories Customer Service Department can be reached using one of the following telephone numbers: Accessory Part No. Battery Pack, NiMH 1400 mAH Toll-Free: (800) 328-3911 Standard 587-8150-135 (From within continental United States only) Intrinsically safe [1] 587-8150-136 International: (507) 835-6911 Antenna, flexible half-wave 800 MHz [1] 585-5000-053 FAX: (507) 835-6969 Antenna, 800 MHz 501-8100-001 Speaker-microphone, w/360° swiv clip [1] 589-0015-040 E-Mail
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GENERAL INFORMATION are times when the technicians have specific questions 1.10 INTRINSICALLY SAFE INFORMATION that need to be answered in order to completely iden- tify and repair a problem. NOTE: Contact your sales representative to determine the availability of intrinsically safe models. When returning equipment for repair, it is also a good idea to use a PO number or some other reference 1.10.1 INTRODUCTION number on your paperwork in case you need to call the repair lab about your unit. The
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GENERAL INFORMATION tion. When electrical equipment is given this rating, the ignition of a particular atmosphere if two of the faults equipment is considered incapable of releasing suffi- specified in the testing procedure occur. In other cient electrical and thermal energy under normal oper- words, it must be able to withstand two simultaneous ation or specified fault conditions per the testing unrelated breakdowns without causing ignition. To standard to cause ignition of a specific flammable
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GENERAL INFORMATION Table 1-2 Material Classification 1. If you have not already done so, remove the battery by pressing the release button upward and then Typical Hazard Group Class sliding it off the transceiver. If the belt clip is Acetylene A I mounted on the back, it must also be removed. Hydrogen B I Ethylene, ethyl ether, cyclopropane C I 2. Remove the three screws in the back and two in the bottom end that are indicated in Figure 1-1. Slide the Gasoline, naphtha, butane, propane, DI alco
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GENERAL INFORMATION 4. Remove the PC board by lifting it upward. The RF- LOCK to-logic board connector under the IF board must unplug, so some resistance may be encountered. Do not pull on the IF or PLL board assemblies because they can be easily damaged. UNLOCK 1.11.5 REMOVING LOGIC UNIT 1.11.4 REMOVING RF UNIT 1. Remove the top panel knobs. Then remove the spanner nuts on the quick select and on-off/volume 1. Remove the five screws attaching the shield to the switches. Remove the plastic top p
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GENERAL INFORMATION 7780 SPECIFICATIONS The following are general specifications intended for use in testing and servicing the transceiver. For current advertised specifications, refer to the 7780 product information sheet available from your E.F. Johnson sales representative. Specifica- tions are subject to change without notice. GENERAL Operating Mode SMARTNET/SmartZone (trunked) and conventional (non-trunked) Frequency Range 806-824 MHz transmit (SMARTNET/SmartZone/conventional standard) 851-
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TRANSCEIVER OPERATION SECTION 2 TRANSCEIVER OPERATION 2.1 FEATURES able with the enhanced keypad model are also avail- able with the limited keypad model. The features not 2.1.1 GENERAL FEATURES available with the limited (3-key) model are as follows: • 16 zones with home zone select • 16 channels per zone (256 channels total) • Since the DTMF keys are not available, it is not • Radio-wide scan possible to dial telephone numbers or manually • Time-out timer send DTMF tones. However, telephone ca
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TRANSCEIVER OPERATION 1 2 3 F1 F1 F2 F3 4 5 6 ENT F2 8 7 9 CLR F3 0 # * ENT Figure 2-1 Limited Keypad Model Figure 2-2 Full Keypad Model 2.2.2 TOP PANEL INDICATORS TX Indicator (Red) - Indicates when the transmitter FCN (Function) - This is a dealer programmable is keyed. switch that can control various functions (see Section 2.3.4). RX Indicator (Green) - Indicates that the channel may be busy because a carrier is being detected. Battery Release Button - Pushing this spring-loaded button upward
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TRANSCEIVER OPERATION Telephone Radio- Talk-Around Monitor Priority Keypad Prog. Scan Call Wide Mode Mode Channel Mode Enabled In Scan Scan Private List Call Alphanumeric Display Low Battery Low Tx Busy Keypad Power Channel Locked Figure 2-3 Display 2.2.5 FRONT PANEL KEYS (FULL KEYPAD Alphanumeric Display - This eight-character area of MODEL) the display indicates alphanumeric messages and feature selection information. The following keys are located on the front panel shown in Figure 2-2: S - S
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TRANSCEIVER OPERATION BUSY - A busy system or transmit channel is being • If a conventional channel is selected and the detected by the Busy Channel Lockout feature (see Monitor option switch is programmed (see Section Section 2.4.5). 2.4.4), pressing that switch unsquelches/squelches the receiver and either voice or background noise is - The battery needs recharging (see Section heard. If a SMARTNET/SmartZone channel is 2.3.6). selected, the receiver cannot be manually unsquelched. - The keypad
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TRANSCEIVER OPERATION Table 2-1 Option Switch Functions 2.3.6 LOW BATTERY INDICATION Smart- Smart- Conv. See When the battery voltage falls below a preset Function Net Zone Mode Section level, the icon appears in the display. This Mode Mode icon stays on until power is turned off. In addition, the Backlight X X X 2.3.3 following low battery indications may be programmed Call Alert X X 2.5.7 to occur: Call Response X X 2.5.4, 2.5.5 Displayed Information X 2.4.2 • The amber BATT indicator on the t
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TRANSCEIVER OPERATION channel it can be programmed for times from 15 disabled and vice versa. More information on these seconds up to 3 minutes, 45 seconds or disabled (not modes follows. used). If the transmitter is keyed continuously for longer than the programmed time, the transmitter is Standard Scanning disabled and an invalid condition tone sounds. Five seconds before time-out occurs, an alert tone sounds to Standard scanning monitors only channels that indicate that time-out is approachin
