Ericsson LPE-200 User Manual

ericssonzericssonzMaintenance ManualLPE-200SCAN And SYSTEMPORTABLE RADIOS900 MHz

AE/LZB 119 1902 R1A10CIRCUIT ANALYSISThe portable radio is unique in the generation of thetransmit carrier. The transmit section has an offsetfrequen

AE/LZB 119 1902 R1A11Local Oscillator Buffer (V450)The injection frequency (1011.2-1016.2 MHz) from thesynthesizer circuit is applied to the base of L

AE/LZB 119 1902 R1A12Digital I/O LinesThe balanced RxIF and RxIF_B (B implies “Barred”indicating that the condition is true when the line is low)lines

AE/LZB 119 1902 R1A13TRANSMITTERTransmit Frequency GenerationThe main VCO, in the synthesizer circuit, isprogrammed to generate the 1st LO receive inj

AE/LZB 119 1902 R1A14(MODQ and MODQ_B). The I input passes through a lowpass filter consisting of capacitors C191, C192 and C193,resistor R166 and in

AE/LZB 119 1902 R1A15divider consisting of resistors R116 and R117. The outputof the divider circuit connects to power control bufferamplifier N102-B

AE/LZB 119 1902 R1A16the voltage divider consisting of resistors R202 and R204and can be metered at test point TP202. The level of thissignal is typi

AE/LZB 119 1902 R1A17Tx Switch (V192)The Tx Switch consists of transistor V192. TransistorV192 is normally off (receive). When the Delayed Push-To-T

AE/LZB 119 1902 R1A18LCD NEGATIVE BIAS GENERATORA 96 kHz, 5V p-p square wave from HILLARY D701-57 is rectified and inverted to a negative supply volta

AE/LZB 119 1902 R1A19Flash ProgrammingThe “FLASH” software is the current version of theLPE-200 radio operating software. When changes andenhancement

AE/LZB 119 1902 R1A2MANUAL REVISION HISTORYREVISION DATE REASON FOR CHANGER1A DEC 1996 Original issueNOTICE!This manual covers Ericsson and General El

AE/LZB 119 1902 R1A20Table 1 - General TroubleshootingSymptom Possible Cause/Action RequiredCompletely Inoperative (nodisplay or audio on power up)Pow

AE/LZB 119 1902 R1A21Figure 8 - Transmit Path - Test Points and Levels

AE/LZB 119 1902 R1A22ERROR CODES INTRODUCTIONThis section lists all the radio errors and warnings. The radio displays errors and warnings to the user

AE/LZB 119 1902 R1A23Non-Fatal ErrorsNon-fatal errors are displayed for a short period (about two seconds) then normal radio operation will resume.Non

AE/LZB 119 1902 R1A24FATAL_LCD_NOACK HARDWARE 40 LCD did not ack message.FATAL_LCD_HARD_FAIL HARDWARE 41 LCD hardware is invalid.FATAL_SCI_NOHEAP HARD

AE/LZB 119 1902 R1A25PI_MALLOC_ERROR SOFTWARE 503 Could not allocate memory to store crucialpersonality data.UI_FATAL_DEVICE_ERROR PERSDATA 600 Input/

AE/LZB 119 1902 R1A26Error Name Message Code DescriptionPIFEAT_SNR_ERROR FEAT ERR 550 Feature encryption - Cannot read radio ROM serialnumber.PIFEAT_R

AE/LZB 119 1902 R1A27Radio- Canceled by receiver 15 The radio operating software received a cancel command.Radio- Canceled by sender 16Radio- End of t

AE/LZB 119 1902 R1A28DISASSEMBLY PROCEDURETo disassemble the LPE-200 radio:Figure 91. Remove the battery pack by pushing the battery releasebutton an

AE/LZB 119 1902 R1A29Figure 1310. Using a flat blade screwdriver, push on the batterycontacts. Be careful not to damage the gasket.Applying pressure

AE/LZB 119 1902 R1A3SPECIFICATIONS...

AE/LZB 119 1902 R1A30Figure 1714. Pry up on the hook to release from the latch and pushdown on the switches to remove the assembly from thehousing.Fi

ASSEMBLY DIAGRAM AND PARTS LISTSYMBOL PART NUMBER DESCRIPTION1SXK 107 3807/2 Front Assembly(LPE-200 Scan)1SXK 107 3808/2 Front Assembly(LPE-200 System

ASSEMBLY DIAGRAM AND PARTS LISTFront Assembly SCAN(151 88-SXK 107 3807 Uen, Rev. E)SYMBOL PART NUMBER DESCRIPTION2SXA 120 4112/02 Keypad Scan (LPE-200

ASSEMBLY DIAGRAM AND PARTS LISTFront Assembly SYSTEM(151 88-SXK 107 3808 Uen, Rev. E)SYMBOL PART NUMBER DESCRIPTION2SXA 120 4115/02 Keypad System (LPE

ASSEMBLY DIAGRAM AND PARTS LISTRadio Rear Assembly(151 88-SXK 107 3815, Rev. )SYMBOL PART NUMBER DESCRIPTION1SXK 107 3816 Rear Housing Casting2SXA 120

ASSEMBLY DIAGRAM AND PARTS LIST900 MHz Main Circuit Board Assembly(151 88-ROA 117 2297, Rev. )SYMBOL PART NUMBER DESCRIPTION2 SXA 120 4167 Ground PadN

OUTLINE DIAGRAM 900 MHz Circuit Board(1078-ROA 117 2297 Uen, Sheet 1, Rev. B)FRONT SIDEAE/LZB 119 1902 R1A36

OUTLINE DIAGRAM 900 MHz Circuit Board(1078-ROA 117 2297 Uen, Sheet 2, Rev. B)BACK SIDEAE/LZB 119 1902 R1A37

SCHEMATIC DIAGRAM Block Diagram(1911-ROA 117 2297, Sheet 1, Rev. B)AE/LZB 119 1902 R1A38

SCHEMATIC DIAGRAM Transmitter(1911-ROA 117 2297, Sheet 2, Rev. B)AE/LZB 119 1902 R1A39

AE/LZB 119 1902 R1A4BASIC TROUBLESHOOTING...

SCHEMATIC DIAGRAM Transmit Offset(1911-ROA 117 2297, Sheet 3, Rev. B)AE/LZB 119 1902 R1A40

SCHEMATIC DIAGRAM Synthesizer(1911-ROA 117 2297, Sheet 4, Rev. B)AE/LZB 119 1902 R1A41

SCHEMATIC DIAGRAM Receiver Front End(1911-ROA 117 2297, Sheet 5, Rev. B)AE/LZB 119 1902 R1A42

SCHEMATIC DIAGRAM Receiver Back End(1911-ROA 117 2297, Sheet 6, Rev. B)AE/LZB 119 1902 R1A43

SCHEMATIC DIAGRAM RF Regulators(1911-ROA 117 2297, Sheet 7, Rev. B)AE/LZB 119 1902 R1A44

SCHEMATIC DIAGRAM Digital I/O Lines to RF Section(1911-ROA 117 2297, Sheet 8, Rev. B)AE/LZB 119 1902 R1A45

SCHEMATIC DIAGRAM Analog I/O Lines to RF Section(1911-ROA 117 2297, Sheet 9, Rev. B)AE/LZB 119 1902 R1A46

SCHEMATIC DIAGRAM TX/RX Audio(1911-ROA 117 2297, Sheet 10, Rev. B)AE/LZB 119 1902 R1A47

SCHEMATIC DIAGRAM TX/RX Audio(1911-ROA 117 2297, Sheet 11, Rev. B)AE/LZB 119 1902 R1A48

SCHEMATIC DIAGRAM Flex Connector(1911-ROA 117 2297, Sheet 12, Rev. B)AE/LZB 119 1902 R1A49

AE/LZB 119 1902 R1A5SPECIFICATIONS∗∗ (Con't)RECEIVEChannel Spacing 12.5 kHzSensitivity (12 dB SINAD) -118dBmSelectivity: -63 dBIntermodulation -6

SCHEMATIC DIAGRAM DSP Connectors(1911-ROA 117 2297, Sheet 13, Rev. B)AE/LZB 119 1902 R1A50

SCHEMATIC DIAGRAM System Memory(1911-ROA 117 2297, Sheet 14, Rev. B)AE/LZB 119 1902 R1A51

SCHEMATIC DIAGRAM Regulators/Power Switch(1911-ROA 117 2297, Sheet 15, Rev. B)AE/LZB 119 1902 R1A52

SCHEMATIC DIAGRAM LCD Bias, LED Driver, UDC SWA+ OUT(1911-ROA 117 2297, Sheet 16, Rev. B)AE/LZB 119 1902 R1A53

SCHEMATIC DIAGRAM Debbie D601(1911-ROA 117 2297, Sheet 17, Rev. B)AE/LZB 119 1902 R1A54

SCHEMATIC DIAGRAM Hillary D701(1911-ROA 117 2297, Sheet 18, Rev. B)AE/LZB 119 1902 R1A55

Ericsson Inc.Private Radio SystemsMountain View RoadLynchburg, Virginia 24502 AE/LZB 119 1902 R1A1-800-592-7711 (Outside USA, 804-592-7711) Printed in

AE/LZB 119 1902 R1A6DESCRIPTIONThe Ericsson Inc. LPE-200 Portable Radios are rugged,high-quality, high-performance FM two-waycommunications unit. It

AE/LZB 119 1902 R1A7MECHANICALThe radios are packaged in a polycarbonate blendexterior housing. A six-cell back mounted nickel cadmiumbattery pack pr

AE/LZB 119 1902 R1A8OPERATIONThe LPE-200 series of portable radios is designed forEDACS and conventional mode operation. When the unit isused in a tr

AE/LZB 119 1902 R1A9KEYPAD SCAN/SYSTEM FUNCTIONSFigure 2 - Scan KeypadFigure 3 - System KeypadKey Function▲ ▼Primary Function: Allows user to select