Instruction/ maintenance manual of the product LPE-200 Ericsson
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ericssonz ericssonz Maintenance Manual LPE-200 SCAN And SYSTEM PORTABLE RADIOS 900 MHz.
AE/LZB 119 1902 R1A 2 MANUAL REVISION HISTORY REVISION DATE REASON FOR CHANGE R1A DEC 1996 Original issue NOTICE! This manual covers Ericsson and General Electric products manufactured and sold by Ericsson Inc. NOTICE! Repairs to this equipment should be made only by an authorized service technician or facility designated by the supplier.
AE/LZB 119 1902 R1A 3 SPECIFICATIONS...................................................................................................................................................................... 4 GENERAL ......................................
AE/LZB 119 1902 R1A 4 BASIC TROUBLESHOOTING ............................................................................................................................................ 19 ERROR CODES INTRODUCTION ......................................
AE/LZB 119 1902 R1A 5 SPECIFICATIONS ∗ ∗ (Con't) RECEIVE Channel Spacing 12.5 kHz Sensitivity (12 dB SINAD) -118dBm Selectivity: -63 dB Intermodulation -67 dB Frequency Separation Full Bandwidth Audio Output 500 mW @ 3% Maximum Distortion TRANSMIT RF Power Output 0.
AE/LZB 119 1902 R1A 6 DESCRIPTION The Ericsson Inc. LPE-200 Port able Radios are r ugged, high-quality, high-performance FM tw o-way comm unications unit. It is available in either Scan or System versions. These are Ericsson’s smallest and most sophis ticated hig h-s pecification portable radios, des igned to meet w orldwide requirem ents.
AE/LZB 119 1902 R1A 7 MECHANICAL The radios are packaged in a poly carbonate blen d exterior housin g. A six -cell back mounted nick el cadmium battery pack provides a nomi nal 7.5 volts. Two differen t nickel cadm ium battery pack s offering high an d extended capacities are available for use with the portable radios.
AE/LZB 119 1902 R1A 8 OPERATION The LPE- 200 series of porta ble radios is des ign ed for EDACS and conventional m ode operatio n. When the unit is used in a tr unked EDACS , the digital contro l channel is automatically m onitored.
AE/LZB 119 1902 R1A 9 KEYPAD SCAN/SYSTEM FUNCTIONS Figure 2 - Scan Keypad Figure 3 - System Keypad Ke y Function ▲ ▼ Primary Function: Allows user to select either system, groups, or channels, depending on personality programming. The buttons act as STEP UP or STEP DOWN .
AE/LZB 119 1902 R1A 10 CIRCUIT ANALYSIS The portable radio is uniqu e in the g eneration of the transm it carrier. The transmit section has an offset frequen cy loop operating at 115.2 MHz. This m eans th e synthesizer is opera ting at a freq uency that is not harmonically related to the output frequency.
AE/LZB 119 1902 R1A 11 Local Oscillator Buffer (V450) The injecti on frequ ency (1011.2-1016.2 MHz) from the synthesizer circuit is applied to the base o f L ocal O scillator ( LO ) NPN buffe r transis tor V450 thro ugh cap acitor C450 and i nductor L450.
AE/LZB 119 1902 R1A 12 Digital I/O Lines The balanced RxIF and Rx IF_B ( B implies “Barred” indicating that the conditio n is true when the line is low) lines conne ct thro ugh resistor and capa citor RF d ecoup ling circuits to HILLA RY D701. RxIF connects through resist ors R715 and R 714 and capacitor C 707 to D701, Pin 8.
AE/LZB 119 1902 R1A 13 TRANSMITTER Transmit Frequency Generation The main VCO, in the synthesizer circuit, is program med t o generate t he 1st LO receive injection freque ncy (1011.2 to 1016.2 MHz). This carrier freque ncy is m ixed w ith a transm it offset f requency of 115.
AE/LZB 119 1902 R1A 14 ( MOD Q and MOD Q _B ). The I input passes thro ugh a lo w pass filter con sisting of capacitors C191, C192 and C193, resist or R166 and in ductors L156 and L 157. The outpu t of this filter con nects to N150, Pins 43 ( I ) and 42 ( I_bar ).
AE/LZB 119 1902 R1A 15 divider con sist ing of resist ors R116 and R 117. T he output of th e divider circuit conn ects to power con trol buffer ampl ifier N102- B, Pin 5 ( +IN ). The out put of N102- B drives Pin 1 of the power amplifier. Power Control Buffer (N102-B) A regu lated 5.
AE/LZB 119 1902 R1A 16 the v oltage di vider cons istin g of res istors R 202 and R204 and can be m etered at test point TP202. T he level of this signal is typically 25 mV RMS . This feedback sig nal connec ts through c oupling ca pacito r C 207 to N203, Pin 5 ( INM1 ).
AE/LZB 119 1902 R1A 17 Tx Switch (V192) The Tx Sw itch consist s of tran sistor V192. Transis tor V192 is norm ally of f (receive). Wh en the Delay ed Push-To- Talk (DPT T) line goes high (transm itter keyed), transistor V192 condu cts and th e base of B+ S wi tch PNP tran sistor V191 goes low.
AE/LZB 119 1902 R1A 18 LCD NEGATIVE BIAS GENERATOR A 96 k Hz, 5V p-p squ are wa ve from HILLAR Y D701- 57 is rectified and inverted to a negative sup ply voltage by C922, V909 and C923. This negat ive vol tage is controlle d to th e LC D by V910 to vary the displa y cont rast.
AE/LZB 119 1902 R1A 19 Flash Programming The “FLA SH” softw are is the curren t version of the LPE-200 radio operating softw are. When chang es and enhancem ents are m ade to the operating code, the new operating code can be “FL ASHED” to the radio, upgrading the operating code without any hardw are changes to the radio.
AE/LZB 119 1902 R1A 20 Table 1 - General Troubleshooting Symptom Possible Cause/Action Required Completely Inoperative (no display or audio on power up) Power Supply Problem? 1. Check battery voltage with a voltmeter. 2. Charge battery or replace battery.
AE/LZB 119 1902 R1A 21 Figure 8 - Transmit Path - Test Points and Levels.
AE/LZB 119 1902 R1A 22 ERROR CODES INTRODUCTION This section lists all the rad io errors and warnings. The radio d isplays errors and warnings to the user to indicate problems th at have occurred. R adio errors can occur at any time from power u p to power dow n.
AE/LZB 119 1902 R1A 23 Non-Fatal Errors Non-fatal errors are displayed for a short period (about two seconds) then normal radio operation will resume. Non-Fatal Errors Error message Description UNKNOWN Undocumented error. FEAT ERR Feature encryption error.
AE/LZB 119 1902 R1A 24 FATAL_LCD_NOACK HARDWARE 40 LCD did not ack message. FATAL_LCD_HARD_FAIL HARDWARE 41 LCD hardware is invalid. FATAL_SCI_NOHEAP HARDWARE 50 Serial communication interface out of heap (RAM memory) space. FATAL_DSP_NOACK HARDWARE 60 DSP did not ack message.
AE/LZB 119 1902 R1A 25 PI_MALLOC_ERROR SOFTWARE 5 03 Could not allocate memory to store crucial personality data. UI_FATAL_DEVICE_ERROR PERSDATA 600 Input/output device error. UI_FATAL_SWTO_MALLOC_ERROR SOFTWARE 6 01 Software memory error. UI_FATAL_SWTO_MAX_ERROR SOFTWARE 6 02 Software error, power cycle the radio.
AE/LZB 119 1902 R1A 26 Error Name Message Code Description PIFEAT_SNR_ERROR FEAT ERR 550 Feature encryption - Cannot read radio ROM serial number. PIFEAT_READ_ERROR FEAT ERR 551 Personality feature encryption read failure or data not available. PIFEAT_CRC_ERROR FEAT ERR 552 decryption failure.
AE/LZB 119 1902 R1A 27 Radio- Canceled by receiver 15 The radio operating software received a cancel command. Radio- Canceled by sender 16 Radio- End of transmission received 17 The radio software received or sent an end of transmission. Radio- Transmit error 18 Radio could not transmit the required data.
AE/LZB 119 1902 R1A 28 DISASSEMBLY PROCEDURE To disassemble the LPE-200 radio: Figure 9 1. Remove the battery pack by pushing the battery release button and slid ing the battery pack straight back until it stops, then lift the battery pack out .
AE/LZB 119 1902 R1A 29 Figure 13 10. Usin g a fl at blade screw driver, pu sh on th e battery contacts. Be careful n ot to damage the gasket. Applying pressure on the battery contacts will slow ly separate the main circuit board and shield from the metal frame.
AE/LZB 119 1902 R1A 30 Figure 17 14. Pry up on the hook to release from the latch and push down on the sw itches to remove the assembly f rom the housing. Figure 17 - Removing Switch Assembly (Pry up on the latch) Figure 18 15. T o remove the Antenna Sw itch Assembly the switch assembly must be removed first.
ASSEMBL Y DIA GRAM AND P ARTS LIST SYMBOL P ART NUMBER DESCRI PTION 1 SXK 107 3807/2 F ront Assembly (LPE-200 Scan) 1 SXK 107 3808/2 F ront Assembly (LPE-200 System) 2 SXK 107 3815 Rear Assembly (896 - 940 MHz TX) MARRIAGE HARDW ARE KIT 3 SXA 120 4145 Main Gasket 4 SBA 124 025/0080 Screw (2) 6 SXA 120 4118 Washer Stop .
ASSEMBL Y DIA GRAM AND P ARTS LIST Fr ont Assembly SCAN (151 88-SXK 107 3807 Uen, Rev . E) SYMBOL P ART NUMBER DESCRIPTION 2 SXA 120 4112/02 K eypad Scan (LPE-200) 3 SXA 120 4122 K e ypad Retainer 4 R.
ASSEMBL Y DIA GRAM AND P ARTS LIST Fr ont Assembly SYST EM (151 88-SXK 107 3808 Uen, Rev . E) SYMBOL P ART NUM BER DESCRIPTION 2 SXA 120 4115/02 K eypad System (LPE-200) 3 SXA 120 4122 K e ypad Retain.
ASSEMBL Y DIA GRAM AND P AR TS LIST Radio Rear Assembly (151 88-SXK 107 3815, Rev . ) SYMBOL P ART NUMBER DESCRIPTION 1 SXK 107 3816 Rear Housing Casting 2 SXA 120 4110 Rear Cosmetic Cover 3 RNT 403 3.
ASSEMBL Y DIA GRAM AND P ARTS LIST 900 MHz Main Cir cuit Board Asse mbly (151 88-RO A 117 2297, Rev . ) SYMBOL P ART NUMBER DESCRIPTION 2 SXA 120 4167 Ground P ad N101 R YT 901 6118/2 P A Module U201 .
OUTLINE DIA GRAM 900 MHz Cir cuit Board (1078-R OA 117 2297 Uen, Sheet 1, Rev . B) FR ONT SIDE AE/LZB 119 19 02 R1A 36.
OUTLINE DIA GRAM 900 MHz Cir cuit Board (1078-R O A 117 2297 Uen, Sheet 2, Rev . B) B A CK SIDE AE/LZB 119 19 02 R1A 37.
SCHEMA TIC DIA G RAM Block Diagram (1911-R OA 117 2297, Sheet 1, Rev . B) AE/LZB 119 19 02 R1A 38.
SCHEMA TIC DIA GRAM T ransmitter (1911-R OA 117 2297, Sheet 2, Re v . B) AE/LZB 119 19 02 R1A 39.
SCHEMA TIC DIA G RAM T ransmit Offs et (1911-R OA 117 2297, Sheet 3, Re v . B) AE/LZB 119 19 02 R1A 40.
SCHEMA TIC DIA GRAM Synthe sizer (1911-R OA 117 2297, Sheet 4, Re v . B) AE/LZB 119 19 02 R1A 41.
SCHEMA TIC DIA G RAM Receiv er Front End (1911-R OA 117 2297, Sheet 5, Re v . B) AE/LZB 119 19 02 R1A 42.
SCHEMA TIC DIA GRAM Receiver Back End (1911-R OA 117 2297, Sheet 6, Rev . B) AE/LZB 119 19 02 R1A 43.
SCHEMA TIC DIA G RAM RF Regulators (1911-R OA 117 2297, Sheet 7, Re v . B) AE/LZB 119 19 02 R1A 44.
SCHEMA TIC DIA GRAM Digital I/ O Lines to RF Section (1911-R OA 117 2297, Sheet 8, Rev . B) AE/LZB 119 19 02 R1A 45.
SCHEMA TIC DIA G RAM Analog I/O L ines to RF Section (1911-R OA 117 2297, Sheet 9, Rev . B) AE/LZB 119 19 02 R1A 46.
SCHEMA TIC DIA GRAM TX/RX A udio (1911-R OA 117 2297, Sheet 10, Re v . B) AE/LZB 119 19 02 R1A 47.
SCHEMA TIC DIA G RAM TX/RX A udio (1911-R OA 117 2297, Sheet 11, Re v . B) AE/LZB 119 19 02 R1A 48.
SCHEMA TIC DIA GRAM Flex Connector (1911-R OA 117 2297, Sheet 12, Re v . B) AE/LZB 119 19 02 R1A 49.
SCHEMA TIC DIA G RAM DSP Connectors (1911-R OA 117 2297, Sheet 13, Re v . B) AE/LZB 119 19 02 R1A 50.
SCHEMA TIC DIA GRAM System Memory (1911-R OA 117 2297, Sheet 14, Re v . B) AE/LZB 119 19 02 R1A 51.
SCHEMA TIC DIA G RAM Regulators/Power Switch (1911-R OA 117 2297, Sheet 15, Re v . B) AE/LZB 119 19 02 R1A 52.
SCHEMA TIC DIA GRAM LCD Bias, LED Dri ver , UDC SW A+ OUT (1911-R OA 117 2297, Sheet 16, Re v . B) AE/LZB 119 19 02 R1A 53.
SCHEMA TIC DIA G RAM Debbie D601 (1911-R OA 117 2297, Sheet 17, Re v . B) AE/LZB 119 19 02 R1A 54.
SCHEMA TIC DIA GRAM Hillary D701 (1911-R OA 117 2297, Sheet 18, Rev . B) AE/LZB 119 19 02 R1A 55.
Ericsson Inc. Priv ate Radio Systems Mounta in V ie w Road L ynchburg, V ir gin ia 2450 2 AE/LZB 119 1902 R1A 1-800 -59 2-771 1 (O ut sid e US A, 80 4- 5 92 - 77 11 ) Print ed in U.
An important point after buying a device Ericsson LPE-200 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Ericsson LPE-200 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Ericsson LPE-200 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Ericsson LPE-200 you will learn all the available features of the product, as well as information on its operation. The information that you get Ericsson LPE-200 will certainly help you make a decision on the purchase.
If you already are a holder of Ericsson LPE-200, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Ericsson LPE-200.
However, one of the most important roles played by the user manual is to help in solving problems with Ericsson LPE-200. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Ericsson LPE-200 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
