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Ericsson LPE-200 User's Manual

Contents

1. TABLE OF CONTENTS SPECIFICATIONS sists ei ENSE nai nem REN pu 4 4 REGELV nme pin attempt Ne 5 TRANSMIT ue nire Decet tete ue ten Sum unun usu eit ete Gn RU pom o pite S us 5 DESCRIPTION aU eani adeat AE A U redet OA E 6 ea ete 7 OFTIONS AND ACGESSORIES iem eene tute 7 8 CON ROO nane aiu I aic BU 8 KEY PAD SCAN SYSTEM FUNCTIONS nee m unn 9 CIRCUIT nuestro rear nn benennen te EE 10 k ttr et eec Bart etie gem edges nib d eec beet 10 SEES UE eau an nmi Au uud A 10 RX Front r MM trauen iamen ee DRE ees 10 Rx Back iiu eM En LI i 11 TRANSMTITEBR eite ie eee e eren ee eyed e bee edet de eee pe te 13 Transmit Frequency 222455 pet tte eR cn EHE
2. Pre 16 DC POWER DISTRIBUTION Mae ndi 16 Synthesizer Regulator N290 tet 16 Receiver Regulator N4900 Eee 16 Transmit 10 11 4 01 141 190 ele 16 TxSwitch C92 2 tenete ee ERO EDGE EO eI ede obs usus 17 Be SwitChi ALME 17 Analog Regulator IN900 RR iE o EE Aa ida ERE Bae ERE EU aa ee 17 5V D Switching Regulator N902 ene enne ene enne ennet 17 LCD NEGATIVE BIAS GENERNXATOR 5 rente nop iren tn 18 SER eae dab ue tdem i ete A A 18 EQUIPMENT REQUIRED ree eerie dee ee eed Ede eet 18 PROGRAMMING Deme 18 Personality Programming 18 Flash Programming i rei NE b ier perte ub tob 19 Programming vie e Re Wen 19 AE LZB 119 1902 R1A BASIC TROUBLESHOOTING ERROR CODES INTRODUCTION ERROR CODE OVERVIEW Error Code Format Fatal Errors Non Fatal Errors Special Error Codes ERROR CODES SPECIFIC Hardware Fatal System Errors Operational Software Fatal System Errors Operational Software Non Fatal System Errors Radio Programming Erro
3. 14 divider consisting of resistors R116 and R117 The output of the divider circuit connects to power control buffer amplifier N102 B Pin 5 0 The output of N102 B drives Pin 1 of the power amplifier Power Control Buffer N102 B A regulated 5 5 Vdc is applied to power control buffer 102 Pin 8 V The buffer circuit is a shaping circuit which provides a control voltage on Pin 7 OUT This voltage after passing through resistor 120 is typically 2 5 Vdc to 3 0 Vdc at 3 watt output and can be metered at test point TP103 This control voltage connects through filter capacitor C138 RF choke L113 and resistor R105 to power amplifier N101 Pin 1 Pin Vc This voltages regulates the power output of N101 The output of the PA is increased or decreased by the DC level applied to N102 Pin 1 The feedback loop is stable when the output power level produces a detected level equal to the level prestored as a tracking value equal to 3 watts Transmit Low Pass Filter Antenna Switch When the transmit circuit is keyed Push To Talk switch pressed SW 7 0 Vdc is applied through RF choke L105 to PIN diode V100 With 7 0 volt applied V100 and PIN diode V101 are forward biased signal is then allowed to pass through the low pass filter to the antenna The 6 2 volts on the cathode of V100 connects through inductor L103 to the anode of PIN diode 101 Capacitor C108 L103 and C109 make a parallel resonant circuit wh
4. BML 161 51 505 120 Rapid Ericsson label BML 161 51 506 120 Volt Rapid GE label BML 161 51 507 230 Volt Ericsson BML 161 51 513 120 Volt Multi Rapid label BML 161 51 514 120 Volt Multi Rapid GE label BML 161 51 515 230 Volt Multi Rapid Ericsson label Antenna KRE 101 1223 02 900 MHz Whip Antenna Carrying Accessories KRY101 1605 01 Leather Case With Belt Loop KRY101 1605 A2 Leather W Swivel Belt Loop KRY 101 1609 A1 Belt Loop With Swivel KRY 101 1232 2 Plastic Belt KRY 101 1607 1 Leather Shoulder Strap Audio Accessories KRY 101 1617 1 Speaker GE 1206 KRY 101 1617 3 Speaker Microphone Ericsson label KRY 101 1617 A2 Speaker Mic With Antenna GE label KRY 101 1617 A4 Speaker Mic With Antenna Ericsson label RLD 541 07 11 Earpiece Kit Speaker Microphone AE LZB 119 1902 OPERATION The LPE 200 series of portable radios is designed for EDACS and conventional mode operation When the unit is used in a trunked EDACS the digital control channel is automatically monitored When the user initiates a call the unit sends a digital request through a control channel to the site controller The site controller then assigns the calling radio and all members of the talk group to an available working channel operations in EDACS configurations are supported from a single site system to wide area tr
5. UPRAMCS B RES_RXDSP_B 59 86 0 e 35 RXSIF_CONV TXDSP INT B RXSIF CON 5 GNO 1 vsso UPPHIL A IF NARROW_F 62 8 UPUATT B DSPC RXDATAI UPWAIT B LCD BIAS 63 82 RXSIF CLK DSPC_CLK RXSIF_CLH PCM_DSPEAR 64 81 RXSIF DATA PCM DSPEAR RXSIF DAT LCD 81482 65 88 TXSIF DSPSYNC RXSYNC CH_DSPSYNC TXSIF DSPCLK DSPC RXSYNC TXSIF_DSPCLH J NN T 1 550 34 3 540 PCR_DSPHIC 68 TXSIF DSPUATA PCH_OSPHIC TXSIF DSPDAT RXSIF DSPDATA 69 16 DSPCLKI RXSIF DSPOATA DSPCLK1 _ 76 15 DSPRST B RXDSP INT B RES TXDSP B DSPC TXSYNC T 74 RXSIF DSPSYNC PCH_DSPCLK 05 0 6 RXSIF DSPSYNQ 77 RXSIF_DSPCLK PCM_DSPCLK RXSIF DSPCLH Hillary 0701 K 1911 ROA 117 2297 Sheet 18 Rev B 6 7 8 9 19 T 12 13 14 15 16 55 AE LZB 119 1902 H1A Ericsson Inc Private Radio Systems Mountain View Road Lynchburg Virginia 24502 AE LZB 119 1902 R1A 1 800 592 7711 Outside USA 804 592 7711 Printed in U S A
6. 1 5 AND P169 ARE NOT POPULATED ON CURRENT VERSION OF BOAR K 2 UPCPT8ST PIN NUMBERS DO NOT AGREE WITH DEVICE SPEC BUT AGREES WITH THE BYZ Spee LAYOUT 1 CORRECT 3 4 5 8 10 11 12 13 14 15 16 Transmit Offset 1911 ROA 117 2297 Sheet 3 Rev B 40 SCHEMATIC DIAGRAM AE LZB 119 1902 H1A 1 2 3 4 5 6 8 9 10 11 12 13 14 15 16 veo BUFFER YSYN gt ES 7 08 8238 C249 L C263 6294 R201 120 4ToF 1 154 4TpF ork B C232 1 1 18nF R228 1 C268 EL 14 270 VCD BAND SEL 1 P291 3 gt RX_LO 8 612 i 5 65 net T 31 l l R C252 ces 24 EU C 1 1 5pF 2 BILATERAL SWITCH R297 2209 260 BILATERAL SWITCH 330F gt 0 3 02 D C216 R216 3 1 E 1 20 102 VCTRL 6 E2 DUAL SYNTHESIZER R225 F ERN 6213 6214 6215 6218 C219 dg T 6 1uF 8 20 T 518oF 51606 LOOP SEL 8 82 0 1382 F 150 AFC gt 70 VSN EH 7 1 08 16 41 H C228 C237 C222 8200F 410F T 4loF REFERENCE OSC 6225 L cag I C227 C228 0236 32 17 n p T REF 16 1 SC gt 8 en 18 Mn 78 12 02 6 C14 J UNLOCK B lt 8 612 1 C237 C250 4 R212 ARE POPULATED ON CURRENT VERSION OF BOARD 11 12 Synthesizer
7. 761 1911 ROA 117 2297 Sheet 14 Rev B AE LZB 119 1902 H1A SCHEMATIC DIAGRAM 5V ANALOG REGULATOR B gt 1 B16 N900 TP981 SV_A D 22 1 4 8 109 Een 1 25V1 z R961 R 41 X 12363 SEN 5 TP906 5 PUR ENABLE 1 2 TO RF SECTION REGULATOR ENABLES L cse 928 t 0925 1 936 15uF 15 15uF 15uF 1SuF SEHE TP904 5 0 9 5 0 SWITCHING REGULATOR 4 0966 5 PART OF HILLARY 1569 002 45V_A PIN 5 0701 Pun SEE SHEET 18 15 Us 16 UOUTI FB 987 m C386 ss RESPON 81 54 it 7 F POWER uw MESH CONTROL 59 R963 LOW_BATT_PUR OFF MODULE RES RXDSP 8 ET 2 6 RADIO ON oo GENIO PT8 138 LATCH pugas SA 7963 6 IN gs 2 R911 4K 1 E BINARY BINIO_PTS PUR_SW_SENSE 7 0 POWER SU ON 1 0 T 5VDC POWER SM OFF INTERFACE 4104 H 919 6529 1 tSuF J 35 2 8 2 B 5 9 43 8 REGULATORS POWER SWITCH i 1 Highest Designators C930 1902 982 R919 TP908 2 2 4 a 1 in 12 12 14 15 1 Regulators Power Switch 1911 ROA 117 2297 Sheet 15 Rev B 52 PART OF HILLARY 0701 SEE SHEET 18 BINARY 001 58 DSPC_RXDATA2 1 BINARY QUT 65 LCO_BIAS2 P
8. K 1911 ROA 117 2297 Sheet 4 Rev B 15 16 41 AE LZB 119 1902 H1A SCHEMATIC DIAGRAM 1 e 3 4 5 6 7 8 9 10 11 12 13 14 15 16 IF AMP 1 IF FILTER LO BUFFER v582 HSMS2815 1 C400 C403 C404 C503 1402 L403 R505 ARE NOT POPULATED ON CURRENT VERSION OF BOARD Receiver Front End 1911 ROA 117 2297 Sheet 5 Rev B SCHEMATIC DIAGRAM AE LZB 119 1902 H1A 1 e 3 4 5 6 8 3 10 11 12 13 14 15 16 IF CHIP FILTER 7550 TP551 TP552 HZ FILT 0561 cs62 583 0564 5007 FILTER F zL S2nF 82m 821 82 2551 Receiver Back End K Highest Designetors C574 1551 53 8561 551 2552 1911 ROA 117 2297 Sheet 6 Rev B Spare N550 N552 43 AE LZB 119 1902 H1A SCHEMATIC DIAGRAM SYNTHESIZER REGULATOR RECEIVER REGULATOR TRANSMIT REGULATOR TX SWITCH B SWITCH PWRENABLE B gt F 15 C11 RF Regulators 1911 ROA 117 2297 Sheet 7 Rev B 44 TX ENABLE lt 3 J2 Highest Designators C740 8750 26 TX_ON_B TX ENABLE 20 TX GATE 68 KTXDSP_INT_B MODULATION MAVEFORM DAC SCHEMATIC DIAGRAM PART OF HILLARY 0701 SEE SHEET 18 12 RX SAMPLE INTERFACE PHASE INTERFACE DIGITIZER SH 132 PCM DSP BINARY OUT 62 HOST INTERFACE 08 RXDATA1 FROM TX DSP INTERFACE SH 13 BAND SEL e 1
9. TP905 TP904 903 6802 CI 10805 C806 0803 CI C804 CI L1 900 MHz Circuit Board 1078 ROA 117 2297 Uen Sheet 2 Rev B 37 AE LZB 119 1902 H1A SCHEMATIC DIAGRAM 1 2 3 4 5 6 1 8 9 10 11 12 13 14 16 16 PORTABLE TRAN VER BLOCK DIAGRAM 04100 H M TENE SHEET 2 SHEET 5 SHEET 6 i RX FRONT END RX 1 i RX FILTER Tx 896 902 MHz a M MHz z 16dB 5 1 548 4 1 5dB 15dB TP500 Z 935 941 96 935 941 1 551 S008 T 38 738 I 5 399 2 i Tx LPF FIXED RF FIXED lt 2 IF QUT wii in d gt OS A n fu 1 1 C I 5551 TPS52 SWITCHED B FAST RSSI TO DEBBIE I O TP550 RILLARY SHEET 3 end LO SYNTHESIZER DPTT D FROM HILLARY TX OFFSET 15 75 op 1 l t l FROM HILLARY ad n Tx 458 NARROM PK to PH DATA CLOCK STROBE 2 ENABLE QdBM I M E 217488 Tx 4 1 TX 1 T I 3dB 49B 3dB 49B 1 POWER SENSE TO DEBBIE TP103O
10. 1 transistor V500 which sets the bias of V400 The emitter voltage of V500 is connected to the collector of V400 through resistors R504 and R401 and filter capacitors C506 and C507 This voltage can be metered at 400 The bias to the base of V400 is set by resistor R400 RF coil 1401 tunes the amplifier load The output of V400 is coupled through fixed ceramic band pass filter Z401 Pin 1 The band pass center frequency is 938 MHz and the gain through the filter is typically 1 5 dB The output of Z401 Pin 2 is connected to the input of mixer circuit Z402 Pin 5 10 Local Oscillator Buffer V450 The injection frequency 1011 2 1016 2 MHz from the synthesizer circuit is applied to the base of Local Oscillator LO NPN buffer transistor V450 through capacitor C450 and inductor L450 This signal at the input of V450 is 0 dBM and is amplified to 4 dBm This signal can be metered at TP450 The output of V450 is connected to the input of mixer Z402 Pin 1 Mixer Z402 The LO frequency and the RF signal are mixed to provide an Intermediate Frequency of 76 2 MHz example 1011 2 MHz 935 851 MHz 76 2 MHz This signal on the output of Z450 Pin 4 is applied to the base of IF AMP 1 NPN transistor V500 through filter capacitor C505 inductor L500 and coupling capacitor C504 IF Amp 1 V500 IF AMP 1 amplifies the 76 2 IF signal 15 dB The collector voltage for V500 is from the emitter of LO BUFFER amplifier V450 and can
11. 180 UNLESS OTHERWISE NOTED INSIDE OF BEND RADIUS ON FRONT SIDE INSIDE OF BEND RADIUS ON BACK SIDE Lu TAIL PTT AND UDC BOARDS ARE NOT SHOWN FOR CLARITY Front Assembly SYSTEM 151 88 SXK 107 3808 Uen Rev E 33 AE LZB 119 1902 Radio Rear Assembly 151 88 SXK 107 3815 Rev 34 RF GASKET WOT SHOWN ASSEMBLY DIAGRAM AND PARTS LIST PLACE ANTI SHOCK PAD INTO CASTIME AFTER SWITCH RETAINER 15 ASSEMBLED INTO PLACE NOTES A ATTACH ITEM 2 ITEM BY PLACING ANTENNA HOLE OVER ANTENNA BOSS SWAPPIHG HTO PLACE USING SNAPS ON ITEM 2 A PLACE GASKET OWTO THREADED WECK OF ANTENNA SWITCH ITEM 3 THEN INSERT THROUGH ANTENNA BOSS ITEM AND SCREW MUT ONTO THREADED MECK TORGUE HUT TO 66 6 JM LB A PLACE ITEM 5 OWTO 1 4 AND ENSERT SWITCH SHAFTS ON ITEM 5 THROUGH SWITCH BOSSES ON ITEM SNAPPING ITEM 4 INTO ITEM 1 PLACE ITEM 13 ON ITEM BEFORE IMSERTIMG ITEM 9 INTO ITEM ATTACH ITEM 10 TO ITEM 8 BY STRETCHING ITEM 10 AROUND ITEM B AND PLACIMG GROOVES ON ITEM 8 ATTACH ITEM 7 TO ITEM 8 CONNECTORS KEYED AND INSERT ITEM 8 INTO ITEM 9 BEFORE INSERTING TEM 9 INTO ITEM 1 INSERT CONNECTOR ON ITEM 5 INTO ON ITEM 8 BEFORE INSERTING ITEM 9 INTO ITEM 1 A ITEM 2X BE INSTALLED ON ITEM 51005 TORQUE ITEM HUT TO 28 2 5 INCHSLBJ Rear
12. 601 602 603 604 UI FATAL MESSAGE INVPARM 605 Invalid parameter to ui put message Software error report how error was UI FATAL RI MSGBUF FULL UI FATAL RISYS MSGBUF FULL UI FATAL CI MSGBUF FULL UI FATAL DEVICE NOTSUPPORTED UI FATAL AUXIO MALLOC ERROR UI FATAL NET DEVICE ERROR UI FATAL NO TONE DATA UI FATAL MSGBUF FULL UI FATAL PROMOTE MALLOC ERROR UI FATAL REMAP MALLOC ERROR TU FATAL RXBUF MALLOC ERROR TU FATAL TXBUF MALLOC ERROR TU FATAL PUT UIMSG ERROR TU FATAL PUT RISYSMSG ERROR TU FATAL FASTPUT TXMSG ERROR AEGIS RXBUF MALLOC ERROR AEGIS KEYLOAD MALLOC ERROR AEGIS KEYLOAD ERROR AEGIS DATAMEM MALLOC ERROR encountered UI Task message buffer full error Software error report how error was encountered Radio Interface System EDACS CONV task message buffer full CI Task message buffer full I O device type from personality not supported Software memory error Network I O device error No tone data is available in personality UII O BBOS message buffer full No memory available No memory available No memory available No memory available BB message to UI task failed BB message to RISYS task failed BIOS call for Voter Monitor failed No memory available No Keyloader table memory available General keyload error has occurred No memory is allocated for data AEGIS KEYLOAD NOTABLE No key table was found in EEPROM AEGIS KEYLOAD BAD TABLESIZE Key table
13. Assembly SXK 107 3815 SYMBOL PART NUMBER DESCRIPTION 1 SXK 107 3816 Rear Housing Casting 2 SXA 120 4110 Rear Cosmetic Cover 3 RNT 403 351 01 Antenna Switch Assembly 3A RNT 403 351 901 Gasket 3B RNT 403 351 900 Nut 4 SXA 120 4133 Switch Retainer 5 ROA 117 2220 Switch Module Assembly 6 SXA 120 4134 Switch Gasket Assembly 7 ROA 117 2212 DSP Module 8 ROA 117 2297 Main Board Asm 900 824 MHz 9 SXK 107 3818 RF Logic Shield 10 SXA 120 4137 RF Gasket 11 SXA 120 4155 PA Nuts 12 SXA 120 4171 Anti shock Pad 13 SXA 120 4316 Spacer COMPONENTS ADDED DELETED OR CHANGED BY PRODUCTION CHANGES ASSEMBLY DIAGRAM AND PARTS LIST AE LZB 119 1902 R1A 900 MHz Main Board Assembly NOTES ROA 117 2297 PLACE ITEM 101 ONTO ITEM SOLDER N PLACE SUCH THAT NO GAP EXISTS BETWEEN MATING SURFACES SYMBOL PART NUMBER DESCRIPTION PLACE ITEM 2401 ONTO ITEM AND SOLDER iN PLACE SUCH THAT EXISTS BETWEEN MAT NG SURFACES 2 SXA 120 4167 Ground Pad A PLACE ITEM 2400 ONTO ITEM AND SOLDER IN PLACE N101 RYT 901 6118 2 PA Module SUCH THAT NO GAP EXISTS BETWEEN MATING SURFACES U201 RTL 204 614 03 Reference Oscillator PEEL AND PLACE PAD TO COMPONENT iN ORIENTATION SHOWN X101 RPT 403 303 01 Battery Connector Z400 RTN 202 728 03 Filter Z401 RTN 202 728 02 Filter COMPONENTS ADDED DELETED OR CHANGED BY PRODUCTION CHANGES VIEW ALIGN ITEM 2 W
14. Ericsson 21 SVA 230 01 09 Nameplate LPE 200 GE COMPONENTS ADDED DELETED OR CHANGED BY PRODUCTION CHANGES UDC COVER p ON n d SXK 107 3846 1 LABEL RECESS I I I 1 I I CONNECTOR FLEX Radio 900 MHz 151 88 KRD 103 103 A1 Uen Rev A 31 AE LZB 119 1902 ASSEMBLY DIAGRAM AND PARTS LIST Front Assembly Scan SXK 107 3807 9 SYMBOL PART NUMBER DESCRIPTION 2 120 4112 02 Keypad Scan LPE 200 3 SXA 120 4122 Keypad Retainer UDC BOARD MICROPHONE VARESE 4 ROA 117 2216 Flex Assembly Printed Bd 6 SXA 120 4119 Speaker Gasket 7 RLE 906 18 2 Loudspeaker SPEAKER RECESS PTT BOARD SLOT 8 SXA 120 4121 PTT Actuator LOCATING PTT BOARD UDC BOARD RIBS 4PL 9 SXA 120 4120 Side Control Bezel SLOT UDC 10 SXA 120 4136 Side Control Keypad RECESS 11 SXA 120 4128 Gasket UDC PWB 12 SXA 120 4129 Gasket PTT 13 SVF 930 1252 UDC Label 14 SXA 120 4157 Mike Pad 15 SXA 120 4217 Speaker Insulator BEZEL OPENING TRIM FLEX FLUSH TO STIFFENER WITHIN 0 5 KEYPAD RETAINER SLOTS 2PL 2121 Ng ANNI HAND FOLD 90 DO NOT TOUCH 50 mm FLEX TAIL Front Assembly SCAN 82 mm 151 88 SXK 107 3807 Ue
15. adjusts the reference oscillator frequency and is set by tracking data Filtering of this line is provided by capacitors C222 and C234 Supply voltage for U201 is supplied by synthesizer regulator N290 through the VSYN line This voltage connects through resistor R218 to U201 Pin 4 Vcc and is filtered by capacitors C220 and C221 DC POWER DISTRIBUTION Battery voltage 7 2 Volts connects to battery connector X101 the positive terminal BATT Pin 1 and the negative terminal BATT Pin 3 Fuse F190 and diode V190 provide short circuit and reverse polarity protection If the battery terminals were connected incorrectly positive to negative and negative to positive 190 would conduct and fuse F190 would blow Synthesizer Regulator N290 Battery voltage connects through a decoupling circuit consisting of inductor L290 and capacitor C290 to voltage regulator N290 Pin 6 A PWR ENABLE line originating from Power Switch V905 connects to N290 Pin Cntrl When the Cntrl input is low N290 is enabled and a regulated 5 5 Volts is on N290 Pin 4 Vout Filtering for this line is provided by capacitor C291 This voltage can be metered at test point TP290 and becomes the VSYN line going to the synthesizer circuit Receiver Regulator 490 Battery voltage connects through a decoupling circuit consisting of inductor L490 and capacitor C490 to receiver voltage regulator N490 Pin 6 Vin A RX ON signal generated by
16. be metered at TP500 3 8 V The emitter voltage of V500 is used as feed back to control the gain of RF amplifier V400 The output from the collector of V500 is connected through coupling capacitor C502 to the input of band pass Filter Z500 Pin 4 IF Filter Z500 IF band pass Filter Z500 is a 4 pole crystal filter The gain of Z500 is 3 dB and the center frequency is 76 2 MHz The output of Z500 Pin 6 is coupled to the emitter circuit of IF AMP 2 through a limiting zener diode circuit consisting of zener diodes V502 1 and V502 2 and coupling capacitor C508 IF Amp 2 V501 The typical emitter voltage of V501 is 0 8 V The typical base voltage is 6V and the typical collector voltage 15 3 1 V These voltage levels produce the proper bias for input impedance of 250 ohms This in turn loads the Z500 crystal filter properly The 76 2 MHz IF output on the collector of V501 connects to the input of a 450 kHz IF chip N551 located in the rear section of the LPE 200 Rx Back End IF Chip N551 The IF input 76 2 MHz to IF Chip 551 is connected through coupling capacitor C550 and inductor L550 to N551 Pin 1 RF Internal to N551 DIANE this input signal is amplified and applied to an input of a second mixer circuit A second LO synthesizer injection frequency AE LZB 119 1902 R1A of 76 2 MHz is internally applied to another input of the mixer circuit This results in a second IF of 450 kHz 76 65 MHz 76 2 MHz 4
17. is controlled by a binary output line from HILLARY labelled DUPLEX SPKR ATTEN When this line is at O volts transistor V603 is off and the collector is high which turns on both V602 MOSFETs by passing R641 SPKR HI then connects through the flex circuit to the high side of the speaker Two series MOSFETS are used to prevent forward biasing the characteristic diodes across the MOSFETS with audio when the MOSFETS are OFF 12 TRANSMITTER Transmit Frequency Generation The main VCO in the synthesizer circuit is programmed to generate the 1st LO receive injection frequency 1011 2 to 1016 2 MHz This carrier frequency is mixed with a transmit offset frequency of 115 2 MHz to generate the carrier and two side band frequencies The carrier and upper side band are suppressed and only the lower side band is transmitted For example the carrier frequency of 1015 2 MHz minus the offset frequency of 115 2 MHz is equal to the transmitted lower side band frequency of 900 MHz TX Converter Modulator N150 Transmit Offset The LPE 200 transmit offset frequency is 115 2 Mhz This frequency is generated by a seven times multiplier circuit off the reference oscillator The output of this VCO is applied to a Phase Lock Loop PLL where it is divided by 7 115 2 6 19 2 MHz and compared to a reference frequency of 19 2 MHz The 19 2 MHz reference frequency is generated by oscillator module U201 in the synthesizer circuit A DC phase lock v
18. levels measured using a mid band frequency and high power AE LZB 119 1902 Figure 8 Transmit Path Test Points and Levels 21 AE LZB 119 1902 R1A ERROR CODES INTRODUCTION This section lists all the radio errors and warnings The radio displays errors and warnings to the user to indicate problems that have occurred Radio errors can occur at any time from power up to power down Each error code in the list includes an explanation of what went wrong and what action to take to correct the problem Error codes are divided into three categories Fatal operational error codes These errors will cause the radio to reset Non fatal operational error codes These errors will not cause the radio to reset Radio programming error codes These errors are displayed on the radio or the programming PC display during radio programming ERROR CODE OVERVIEW Error Code Format The errors are displayed on the radio display as follows message Where xxxx is the error code and message is one of the messages listed below ERR XXXX Fatal Errors Fatal errors will cause the radio to display the error message and error code and then reset to its starting operation The reset condition will remain until the fatal error is corrected HARDWARE BIOS errors An example of a personality error is shown below ERFE HSBH 22 AE LZB 119 1902 R1A Non Fatal Errors Non fatal errors are di
19. module through D701 Pin 69 RXSIF_DSPDATA Pin 73 RXSIF_DSPCLK and Pin 74 RXIF_DSPSYNC DSP interface lines connect to DSP TDR TDM DATA RX DSP TCKDR TDM CLOCK RX and DSP TRSR TDM FRAME SYNC TX respectively These lines can be metered on the DSP module at test points TP8 data TP15 clock and TP14 sync respectively DSP Module The Digital Signal Processing DSP Module does all the Channel Guard filtering provides squelch audio mute 1 5 3 and 4 5 dB of volume attenuation and changes the digitized audio into an analog signal The output of the DSP module is on X21 17 PCM_DSEAR This output can be metered at test point TP3 on the DSP module Host Interface The PCM_DSPEAR line connects to D701 Pin 64 and goes to the PCM DSP HOST INTERFACE The audio output of D701 is on Pin 40 PCM_CDCEAR and connects to D601 Pin 34 DPCI DEBBIE D601 This signal PCM_CDCEAR is then put through a decoder low pass filter volume control circuit and an amplifier The low pass filter filters out an 8 kHz sample rate The volume control provides 24 dB in 6 dB steps The output of D601 is on Pin 22 RXAUDIO The signal can be metered at test point TP601 At maximum volume there should be 350 mVolts RMS 1 0Vp p with a 1 kHz tone and 3 kHz deviation Operational Amplifier N300 This signal RXAUD1 connects through capacitor C611 and resistor R625 to operational amplifier N300 Pin 6 B Feedback for the amplifi
20. the radio indicates when the radio is transmitting Display System and group information status icons and menu operation is supported by the 3 line 12 character alphanumeric back lit Liquid Crystal Display LCD Top Mounted Rotary Knobs The rugged rotary knobs are designed for ease of operation by allowing tactile access to groups systems conventional channels as well as volume and power control Knobs are designed with metal protective sleeves which help prevent bent and broken knobs due to impact Keypad The back lit keypad allows the user to access the many radio functions The 6 button SCAN provides easy access to preprogrammed telephone and individual radio ID s while the 15 button System keypad expands this capability allowing direct entry of these numbers The LPE 200 radios have a keypad with translucent keys A detailed description of the keypads and their additional function is found in the OPERATION section Emergency ID And Alarm The user can alert the dispatcher to an emergency by pressing a recessed red button located on the top of the radio which sends user ID and an emergency signal Universal Device Connector UDC The UDC provides the PC programmer and optional accessories access to the radio for ease and versatility of radio functionality Variable Power Control PC Programmable from 0 5 to 3 watts Weatherproof Radios operate reliably under adverse conditions These portable radios m
21. 2 SERIAL SC CLK SC DATA lt 9 65 SC DATA 88 I INTERFACE 22 39 BINIO PT4 127 BINARY 1 0 INTERFACE BINIO_PTIt 2 CONTROL gt SC_SYNILE SC_SYN2LE UNLOCK B F SEL 1 8 m 8 15 TO RF SECTION AE LZB 119 1902 H1A 16 A B C RXIF B 8 014 D E F SC DATA SC SYNILE 4 2 G SC_SYN2LE 3 2 UNLOCK 8 4 2 H gt VCO BAND SEL 1 4 2 I 1 C711 IS NOT POPULATED ON CURRENT VERSION OF BOARD DIGITAL 170 LINES J Digital Lines to RF Section K 1911 ROA 117 2297 Sheet 8 Rev B 16 45 AE LZB 119 1902 H1A SCHEMATIC DIAGRAM 1 2 3 4 5 6 1 8 9 10 11 12 13 14 15 16 i PART OF DEBBIE D601 SEE SHEET 17 17 B 54 193 gt 5 1 se AM ux m 8 3 MD 500 41 C AME MIC TEST AMT 19 5 PHASE 000 Reeg 2563 DIGITIZER D PART OF HILLARY 160K 58 AIDN NOT USED 0701 Logic SEE SHEET 18 n UDC SENSE 10 5 6664 514 04001 62 E 3 gt T CONTROL 0605 2 612 ie mT ee BINIO_PT7 11 13 F 39of 6832 2 SERIAL 3 T CONTROL G INTERFACE 550 I Te 0633 8 2 2 1 4 SV_A 58 RESET I RXSIF_CONV 85 J INTERFACE ANALOG I O LINES T
22. 21 UPADORS TEST300H_B UPADORSI 5 _ 25 an 8 TX_ON B_F 26 119 TX BUSY LED F TX 0N B 0 UNLOCK B F 27 118 UPDATAT BINIO_PT4 UPDATA KPROW2 F pe 17 UPADDRE KPROW4_F 29 4 116 VOL ATTN E KPROU4 BINIO PT 38 115 UPADORT vSSI UPADOR 5V_0 31 GND KPROWI_F 32 eis UPADURIE KPROWG_F 33 4 112 MUTE QUT KPROWe BINIO PT KPCOL3_F 34 111 UPADDRIS KPCOL3 UPADORIG LCD BIASS 35 118 BINIO PTS UPADORI1 36 UPDATA3 183 UPDATAS F KPCOL2 aT wem 188 UPDATAS PCH CDCCLK 38 107 UPADDRIS PCH CDCCLK UPADORIS SC_SYN2LE_F 39 166 PTT B F SC SYN2LE BINIO_PT1 PCH_COCEAR 48 185 UPADORI4 PCH_CDCEAR UPADOR1 PCM CDCMIC 41 164 UPDATA4 PCH CDCHIC UPDATA oxo 32 lusso vsso 2 PCH_COCSYNC OH enn oe SIT PTT UDC B F KPCOLI F 24 181 UPADDRI3 C KPCOLI UPADOR CONS 45 18 UPDATAS UPDATAS BINIO PT6 46 Y 99 BINIO PTG UPEECS H EMULHOOE_8 41 8 DARI PERIPH B DARI Vdd 48 UPADDRIS 97 UPADORIS 36 SABCLK 23 96 UPDATAG SC ACLK UPDATAG RES A 8 58 95 UPDATAZ UPDATAZ DARO EN EMER_UOC_B_F S2 33 UPADCS B H BINIO_PT3 UPADCSS SC STRB 53 T 92 UPADORIS SC STRB UPADORI Vad 54 91 ND 7560 GND 55 sot vovo 9 DUPLEX SPKR ATTEN 56 inert UPADORTT OSPCLK2 1 88 SCL F B 58 S S781 UPRAHCS_B DSPC RXDATA2
23. 50 kHz on the output of the mixer N551 Pin 20 Mixer Out This signal is then routed through a 450 kHz ceramic filter to set the channel bandwidth to 12 5 kHz The output of the filter is routed to N551 Pin 18 IF Inl This input 3 dB to N551 is amplified and sent two places The output N551 Pin 16 IF Out 1 signal goes through capacitor C553 to the input of 450 kHz Ceramic Filter Z550 Pin 2 The output of Z550 on Pin 1 is connected through capacitor C552 to N551 Pin 14 IF In2 This input to N551 is further amplified and balanced outputs RxIF and RxIF_B are sent to HILLARY D701 These two lines one positive and the other negative are used to cancel out any noise that might get on the line These balance outputs are typically 3 dBm and can be metered at test points TP551 and TP552 The Receiver Signal Strength Indicator RSSI circuitry internally monitors the RF signal strength The RF level is represented by a DC voltage level proportional to signal strength Feedback resistors R554 and R561 set the gain of the RSSI output on Pin 7 This signal becomes the FAST RSSI signal going to DEBBIE D601 Feedback resistor R554 connects from the RSSI output on Pin 7 to Pin 8 RSSI Feedback The RSSI signal can be metered at test point TP550 2nd Local Oscillator A 2nd LO circuit internal to N551 generates the 76 65 MHz injection frequency for the mixer circuit The tank circuit for this oscillator consists of capacitors C556 throu
24. 5V A 5 _ 181 AVDD 2 A V se E is INA 193 21222222 5V 433 AMA s AGNO id 18 AGND i AGND ic AVSS AGND AGND ake 84 5 1 12 16 2 119 1902 RIA AE LZB 119 1902 H1A 6 1 8 9 10 11 12 13 14 15 16 THE NETLIST CONDUCTIVITY FOR 0701 IS CREATED BY THIS SHEET 0181 n RESPOM B 1 144 HDATA IN CO_BAND_SEL_1 F 2 FSPOU B PDATA IN 143 UT BINIO PT 1 QU 3 142 8 310 18 INPCLK BINIO PT18 _ 141 TK_DATA_INF BINIO_PT 5 N 14 RX DATA_OUT F BINI0_PT7 UDATA_0U vad 6 139 GNO AVDDI AVSSI B RXIF_B F T 138 EQ IFIN B GENIO REIF F 1164 10 137 20 8 RX_ON F UPREAD B BINIO_PTS 18 NIO PTS KPCOLB 135 KPCOLO F SC_DATA_F 11 x d 134 BINIO PTIS SC 00 BINIO PT 5 SC_CLK_F 12 SC_SYNCLK 000 19 een 66 MODI 8 F 131 1 C MODI B UPADOR MODI F 15 139 UPADOR12 5 MODI UPADORI2 000 16 UPADDR2 MODQ_B_F 17 128 AUDIO_PA_UNMUTE MODO BINIO_PTI2 Vdd 8 127 GNO 7000 VSSI GND 13 voor 2 TX ENABLE 28 125 UPADDR3 TX_GATE UPADDR 21 piN o upapora 24 UPADURE D SC_SYNILE_F 22 123 UPADDRS SC SYNILE UPADDRS GND 23 122 UPADOR4 AVSSI UPADOR 5V_0 1
25. CLOCK IN FROM DSP VDD SUPPLY C737 pepe DGND DSPC TXSYNC DSPC_RXSYNC PCM DSPCLK PCM DSPEAR PCM_DSPMIC DGND DGND TXSIF _DSPSYNC TXSIF_DSPCLK TXSIF_DSPDATA DGND RXSIF_DSPSYNC RXSIF DSPCLK RXSIF DSPDATA TO DSP MODULE DSPCLKI BOARD DGND B 5V D 5V_D 5V_D 5 0 DGND DSP_INTB BIO B DSPRST B B B 5y 43V 5V 43V SPARE SPARE DGND DGND 2 11 12 DSP CONNECTORS 14 15 SCHEMATIC DIAGRAM AE LZB 119 1902 H1A 1 2 3 4 5 6 1 8 9 10 11 12 13 14 15 16 vec2 0703 VCC PIN 8 0792 PIN 30 31 PART OF HILLARY 0701 SEE SHEET 18 UPADORO UPADORI UPADDR2 UPADDR3 UPADOR4 UPADDRS UPADDRG UPADDRT UPADDRE UPADDRS UPADOR 16 UPADDR11 UPADDR 19 0 132 UPDATACT 6 ore FLASH PROM 512 8 RAM 128 8 C fo UPADDRI2 UPADDR13 UPADOR14 UPADORIS UPADDR16 UPADDR1 UPADDRIS UPADDRIS UPDATAG UPDATAT UPDATAZ UPDATA3 UPDATA4 UPDATAS UPDATAE UPDATAT UPURITE_B UPREAD_B UPRAMCS UPADCSO B UPEECS B 33 NC p 7 XTP5 XTP XIP UPPHI 8 3 2 8125 11 XTP8 XTPS VCC1 30 31 GND 23 39 128Kx8B1T Power Pins 1 SYSTEM MEMORY System Memory Highest Designetors 0126 0793 R737
26. CM DSP LCD E HOST INTERFACE SCHEMATIC DIAGRAM V303 V8310 LCD NEGATIVE BIAS GENERATOR gt UOC TX 8 12 26 vaes 4 HSHS2815 V7 5 BINIO_PTG 46 BACKLITE 2 6 3 INTERFACE 10 10 142 UDC SMA FOR BINIO PT 3 119 X BUSY LED I Highest Designetors C926 8933 911 915 1 0923 3 82nf v969 HSHS2815 7 2 BACKLITE 12 6 v9t2 2 V911 5 4 NC 3 gAvss V 2 ysis 51 OUT 12 66 1 SPKR MIC 3 OV STANDBY G 7TV UDC SWA ON gt TX BUSY LED 12 45 AE LZB 119 1902 H1A 13 14 15 16 LCD BIAS LED DRIVERS UDC SWA OUT LCD Bias LED Driver UDC SWA OUT 1911 ROA 117 2297 Sheet 16 Rev B AE LZB 119 1902 H1A 1 Debbie D601 1911 ROA 117 2297 Sheet 17 Rev B 54 SCHEMATIC DIAGRAM THE NETLIST CONDUCTIVITY FOR D601 IS CREATED BY THIS SHEET D681 n REXT DAR 4 MIL REX cco 1 cco MICIP CON3 cong SC DATA F seor 1019 16 ir SC_SABCLK 1001 EET secik 101 1002 cues RXAUD 5 BEARP PCH CDCSYNC BEAR PCM CDCMIC PCH_CDCCLK DPCO RXSIF CLK B 34 2006 RXSIF DATA ABBIE CLK F 8 50 DEC RXSIF DEC 0601 83 MIC TEST 940482 04061 44 8 5 5 an 28 SV_A AH S SV A s AM 1
27. CO oscillates at the 2nd LO frequency of 75 75 Mhz 100 mVgys signal is fed back to N203 Pin 1O INA This signal is divided down to 12 5 kHz and phase compared to a 12 5 kHz reference signal which is derived from the 19 2 Mhz reference oscillator An error voltage is generated by any phase error between the two signals This error voltage is processed by the loop filter R225 R226 C217 C218 and C219 and sent to the voltage controlled oscillator VCO This voltage can be metered at test point TP209 and is typically 2 5 1 0 volts Reference Oscillator U201 Reference Oscillator 0201 provides a reference frequency of 19 2 MHz at 1 5 PPM for the Phase Lock Loop circuit in the JACQUI module the main synthesizer for the receiver 1st LO HILLARY and DEBBIE The output level of this module is 16 dBM and can be metered at test point TP204 The output of U201 Pin 3 Output connects through a band pass filter consisting of capacitor C235 inductor L202 and capacitor C236 This output then connects to the JACQUI circuit through the REF line and to Frequency Synthesizer N203 Pin 8 INR through coupling capacitor C223 The voltage level on Pin 8 is typically 330 mV buffered output from JACQUI on Pin 19 drives the clock input of HILLARY and DEBBIE An Automatic Frequency Control AFC line from DEBBIE DACO3 provides a control voltage ranging typically from 0 5 volts to 4 5 volts to maintain oscillator integrity This DC level
28. D701 connects through enabling switch transistor V490 to N490 Pin 1 Cntrl Resistor R290 connected to the base of transistor V490 is the pull up resistor for ON Regulator 90 is normally enabled When RX ON goes high V490 conducts and N490 is enabled The control voltage can be metered at test point TP490 With N490 enabled a regulated 5 5 Volts is on 90 Pin 4 Vout This voltage be metered at TP491 Capacitor C491 provides line filtering This voltage becomes the VREC line going to the receive circuit to enable the LO buffer IF Amp 1 IF Amp 2 and IF chip Transmit Regulator N190 Battery voltage connects through a decoupling circuit consisting of inductor L190 and capacitor C198 to transmit voltage regulator NI90 Pin 6 Vin The PWR ENABLE line connects to Pin 1 Cntrl to enable the regulator When the is low the regulator is enabled When enabled a regulated 5 5 Volts is on Pin 4 Vout This voltage can be monitored at test point TP190 Filtering for this Voltage Transmit VTX line is provided by capacitor C199 The VTX line connects to power control circuit N102 A power control buffer N102 B transistor switch V153 and TX Converter Modulation circuit N150 JACQUD 16 Tx Switch V192 The Tx Switch consists of transistor V192 Transistor V192 is normally off receive When the Delayed Push To Talk DPTT line goes high transmitter keyed transistor V192 conducts and the base of B Sw
29. FER f 11 1 2 TP103 1977 013 3 30 61 TX POWER CONTROL T D13 i 9 15 LMC6462 H 1116 pu Power Pins 69 226nH 00 egnd 4 B gt 15 E12 6136 866562 Tonk 1 li UA I Power Pins J TX PUR SENSE 9 5 VEN Spere Designetors C107 1102 L108 100 2 Transmitter k 1 C100 C104 C140 AND R106 ARE NOT POPULATED ON CURRENT VERSION OF BOARD Highest designetors C143 103 L117 R122 103 V106 W100 e 2 UPC2T12T PIN NUMBERS DO NOT AGREE WITH DEVICE SPEC BUT AGREES THE BYZ SPEC LAYOUT IS CORRECT 1911 117 2297 Sheet 2 Rev 1 2 3 4 5 6 1 8 9 19 11 12 13 14 15 16 39 AE LZB 119 1902 H1A SCHEMATIC DIAGRAM 6171 172 15 0173 2 5 MODI 8 E3 4 174 0192 39 L157 115 41 60 41 MOD1 B 4 0176 E3 0193 H 0178 16nF 10nF 0179 0194 C186 18nF 2 7 1iOnF C181 8 F3 REF _OSC D Hy es I 4 12 T SC DATA gt 2 8 12 8 23 2 545 se X SC SYN2LE gt RX GU 8 112 J TX ENABLE gt 8 C3 gt 1 013 Highest Designators 0199 1161 152 R169 V153 Spare Designatons 0163 0171 C190 8153 8157 8158 8159 2161 162 P163 RIGA V150 V151 1 C190 1151 R151 156
30. H 15 AGND H 19 spare R863 DN 1 13 41 19 C BUSY LEDG I BAV99 AGND TX BUSY LED 9 2443 145 BC TX LEDR 16 5 R864 BAV99 J c J 28 MIC LO K K Highest Designetors R870 V808 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Flex Connector 1911 ROA 117 2297 Sheet 12 Rev B 49 AE LZB 119 1902 H1A PART OF HILLARY 0701 MODULATION DAC SH 8 SEE SHEET 18 11 66 PCN DSP Te DSPC TXSYNC DSPC RXSYNC 10 DSP FSR FRAME SYNC RX SCHEMATIC DIAGRAM TO DSP FSX FRAME SYNC TX gt PCH DSPCLK HOST INTERFACE 68 TX SAMPLE INTERFACE PCM DSPEAR 05 TXSIF DSPSYNC p XSIF DSPCLK TO DSP CLKX CLOCK FROM DSP DX DATA TX TO DSP DR DATA RX 0727 0128 0129 130 0731 Or 22 TO DSP TFSX amp INT TDM FRAME SYNC TX TO DSP TCLKX TOM CLOCK Tx 06 18 INTERFACE n FROM PHASE DIGITIZER SH 8 Highest Designator C740 DSP Connectors 1911 ROA 117 2297 Sheet 13 Rev B 50 RX SAMPLE INTERFACE RX DSP INTERFACE TXSIF DSPDATA FROM DSP TOX TOM DATA TX TO DSP TFSR TDM FRAME SYNC RX TO DSP TCLKR TDM CLOCK RX TO DSP DATA RX TPT03 TG_SYNC OSP_INTB RXDSP_INT_B gt OSPRST_B RES_TXDSP_B TO DSP
31. ITH TRE EDGE in Circui OF THE COMPONENT AS SHOWN 900 MHz Main Circuit Board Assembly IN THE ABOVE VIEW 151 88 ROA 117 2297 Rev 35 AE LZB 119 1902 ds 1 a 810 211 2847 R842 C 900 MHz Circuit Board 1078 ROA 117 2297 Uen Sheet 1 Rev B 36 Red 2645 go OUTLINE DIAGRAM FRONT SIDE 14 Gh och s gt 2 C604 R612 6111 CO CI 8 S 66247 L 1Reo3 C R802 E m 1 _ 28602 R600 8601 L 1c600 n i e R916 R915 R610 b le 18914 eL Ib 08 628 I 106 629 I 166 R103 218 5 a 141 OUTLINE DIAGRAM AE LZB 119 1902 BACK SIDE R245 527 1 730 EN Eri Ei 387398 736 9 6822 1 737 40732 D R624 esL 30 6 C729L1 6 RET 00739 30 16735 V909 204 m oh T Iva an RHI EE E Lr R116 TP800 C922 1 O 67025 R707 8L R7240 Ter 906 7 REA R728 R727 C716 C712 87207 916 Orpsoo ein nmt 871326707 Tas 8 908 27227 24 22 go vw 9 R730L31 ene one e V807 i acia 28725 cs
32. Maintenance Manual LPE 200 SCAN And SYSTEM PORTABLE RADIOS 900 MHz Ss ERICSSON 2 AE LZB 119 1902 R1A MANUAL REVISION HISTORY REVISION DATE REASON FOR CHANGE DEC 1996 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 Any repairs alterations or substitution of recommended parts made by the user to this equipment not approved by the manufacturer could void the user s authority to operate the equipment in addition to the manufacturer s warranty NOTICE The software contained in this device is copyrighted by Ericsson Inc under the copyright laws of the United States Unpublished rights are reserved This manual is published by Ericsson Inc without any warranty Improvements and changes to this manual necessitated by typographical errors inaccuracies of current information or improvements to programs and or equipment may be made by Ericsson Inc at any time and without notice Such changes will be incorporated into new editions of this manual No part of this manual may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying and recording for any purpose without the express written permission of Ericsson Inc Copyright December 1996 Ericsson Inc AE LZB 119 1902
33. O RF SECTION K Highest Designetors 0619 R624 V680 R613 IS NOT POPULATED ON CURRENT VERSION OF BOARD Designetors Not Used R695 C602 608 C609 1 2 3 4 5 6 1 8 9 10 11 12 13 14 15 16 Analog I O Lines to RF Section 1911 ROA 117 2297 Sheet 9 Rev B 46 SCHEMATIC DIAGRAM AE LZB 119 1902 H1A 1 2 3 4 5 1 8 9 10 11 12 13 14 15 16 1 KHZ TONE 3 KHZ DEV nen saes demp PART OF DEBBIE 120 1 KHZ TONE 3 KHZ DEV 4 2 RNS 12 MV D601 s 250 c300 gt RXAUD2 SEE SHEET 172 MAX VOLUME 21 RMS 60 LEN FOR 590m 82nf S Dui 358 MV RMS 1 0 V P P 500 OUTPUT 16 OHMS OUTPUT INTO 16 OHMS gt HIC TEST 1 KHZ TONE 3 KHZ DEV ENS C 9 01 1 T ies 560 Senf 5 660 DPCO UDC AUD10 QUT 12 16 TP gt SPKR_LO 188 0611 12 6 82nf 17 RXAUD1 4 D P HI 16 C12 10 K3 C613 tL cae 82 0 BEARP 24 gt 38 f gt RXAUDI 16 01 D er 22 8208 611 INT MIC HI 5673 180nF 12 B6 a C368 t 18 ps 887 28 C318 0309 55 vss 18nF vss 33 314 6315 REXT VSS 0618 L C619 1nF 47 16 5 6 160 R43 0625 vss 190 18oF F avss 23 8 YDD AVDD VDD VOD
34. ORT COMI COM2 RS 232 19B235027P1 POWER SUPPLY 19B800850P2 19043836762 12 67 1 TO RADIO ANTENNA Figure 7 Programming And Test Equipment Setup 19 AE LZB 119 1902 R1A Table 1 General Troubleshooting Symptom Possible Cause Action Required Completely Inoperative no Power Supply Problem display or audio on power up 1 Check battery voltage with a voltmeter Charge battery or replace battery Check to be sure battery contacts are not broke or bent Clean battery contacts Check Fuse F190 At power up an error See the Error Message Tables in the following pages for message is displayed type of error and for a probable solution Always attempt to reprogram the personality and flash using the EDACS 3 PC Programmer Receiver inoperative or weak Channel Guard or Type 99 Enabled Defective antenna or antenna switch assembly replace antenna or antenna switch assembly Main Board failure Return to Lynchburg Depot for repair recommended or e Troubleshoot Main Board using the test point diagrams in Figure 8 Replace or repair board as required Transmitter inoperative or Programmed Incorrectly check personality low power Weak battery check voltage Defective antenna or antenna switch assembly replace antenna or antenna switch assembly PA Module failure replace PA Module Main Board failure Return to Lynchburg Depot for repai
35. PC Programmer The Equipment Setup shown in Figure 7 is same as for Personality Programming Programming Mode The PC Programmer cannot communicate with the radio unless the radio is in the Programming Mode To place the radio in Programming Mode l Initially the radio should be OFF 2 Pressand hold the PTT Monitor and Clear buttons 3 Power the radio ON Release the buttons AE LZB 119 1902 4 All pixels on the display should be lit until communication with the PC begins BASIC TROUBLESHOOTING The objective of this section is to guide in quickly isolating a problem to either hardware or software Software errors and problems can usually be corrected in the field Hardware failures are difficult to isolate and sometimes very tedious to repair without specialized tools As stated previously hardware repair to this radio is very limited at best and not recommended Service Parts has set up a Repair and Return policy Service Parts has also made provisions for Circuit Board and Module replacement as required This section includes a General Troubleshooting Table and Test Point Diagram for checking Nominal Transmit Receive Levels not recommended Start by following Table 1 General Troubleshooting and then use the remaining reference material as needed PERSONAL COMPUTER REAR VIEW PROGRAMMING SOFTWARE m Le TQ 3368 PROGRAMMING CABLE TEST CABLE 19B801971P6 N TQ 3370 SERIAL P
36. QUI 150 Generates the transmit carrier frequency from the main VCO frequency Generates the transmit offset oscillator frequency and provides modulation through the I Q inputs CHERYL 203 The main and auxiliary frequency synthesizers for the main VCO and the 2nd Local Oscillator LO DIANE N551 Contains 2nd mixer and the LO for the 2nd mixer Contains a limiter circuit which provides a balanced output to HILLARY Provides the receiver 2nd IF and the Receiver Signal Strength Indicator RSSI signal The Schematic Diagram for this unit consist of 16 sheets Component coordinates are provided so the technician can locate different points with ease For example point may be labeled 7 B16 This means that this point connects to a point shown on sheet 7 with coordinates B read up and 16 read right Borders with vertical and horizontal coordinates are provided to facilitate this capability SOFTWARE Software in the microprocessor handles basic radio controls interfaces and system protocols The HILLARY chip and DSP handles all modulation demodulation and speech processing functions Microprocessor software consists of RAM Bootloader Software downloaded by the PC programmer into the radio and executed This software communicates with the PC using a full network protocol x3 28 Serial data is transferred through the radio UART for FLASH application loading DSP code storage and perso
37. REOR ERES IEEE RE ro t uit EE E 13 TX Converter Modulator 150 e 13 SAW Transmit Band Pass Filter 1 iore IRR 14 Butter Amplilier 5 iem ROS een steroids acp REOR 14 SAW Transmit Band Pass Filter 2 5 in Eae ena RC eee GRADS 14 Pow rsAmplifier N101 eter 14 Directionial Coupler CW 100 iret re p usuta 14 Power Sensor Circuit NT02 iine e eee eb i e eie eri dere ei 14 Power Control Butter N102 B ccc i eon diate il ade doko en suu 15 Transmit Low Pass Filter Antenna Switch enne enne 15 Transmit 02 2933 cm en ite c Ud UT Hu 15 SYNTEESIZER CE 15 Dual SynthesizersN203 idc eta teet tre ei eee edere eene ele tete ec etre buka 15 Bilateral Switch 201 eed ea eie ee ic etr ee eie uY 15 Main Voltage Controlled Oscillator 0200 15 Main Synthesizer 14203 5 16 Auxiliary Synthesizer N203 tee 16 Reference Oscillator 201
38. RO So LU SHEET 5 H Gl SYNTHESIZER j 209 PA POWER CONTROL uli FROM DEBBIE Q 0401 19 2 10 CHERYLI HILLARY AND DEBBIE Z eee LOOP F RON SYNTHESIZER SINTHESTZER HILLARY 19 2 REF st LO 204 10 201 205 206 IL 9 s eine Rotor ERU A INICIO XEM RENE SHEET 7 REGULATORS 1 FROM TO ME MAIN SYNTHESIZER _ NORMAL 1011 2 1617 2 MHz E X J J 7P294 ALKROUND 1058 2 1956 2 MHz 700 LOOP LOOP SELECT FILTER POWER ENABLE B a FROM gt RX ON 200 FROM HILLARY AFC a TE BANDSELECT Block Diagram FROM HILLARY 1911 ROA 117 2297 Sheet 1 Rev B 1 2 3 4 5 6 T 8 3 10 11 12 13 14 15 16 38 SCHEMATIC DIAGRAM AE LZB 119 1902 H1A 1 2 3 4 5 6 1 8 9 10 11 12 13 14 15 16 A gt REC RF r1 5 C2 V181 HSMP 4620 B TP52 Tal us TX RF C 3 C14 0119 0112 6162 DIRECTIONAL COUPLER Mil bi l 1 FILTER D RX 8V R182 220 el h 0116 n E 22 1165 wig 1871 bs whet SAW FILTER a 1 05 8121 ISOLATE 2 POMER AMP boue PONER F 5 5 5 126 B A vies 1191192815 Ser out Yeon 3 nodule POWER CONTROL BUF
39. VDD vD VOD YSS VSS AGND VSS 1 2 45V 1 1 1 56 63 Pr 28 1 11 21 C622 6 V604 0 PART OF HILLARY 82nf i 4 2778 0701 C627 C630 n C641 1 ce C643 C644 SEE SHEET 18 4ToF T 10nF IFT 7T 410 196 T 2106 16nF T 470 38 PCM COCCLK H 43 PCM CDCSYNC R644 AUDIO PA OFF AUDIO PA O INTERFACE PCH_CDCMIC 7 BINIOPTI4 116 RX_VOL_ATTN 9 BINARY reas I INTERFACE BINIO PT 2 128 AUDIO_PA UNMUTE 0629 3 4loF BINARY OUT 56 DUPLEX SPKR ATTEN 2 DSPC TXDATA 1 X683 640 4 INTERFACE 1 C623 C624 C625 R642 NOT POPULATED ON CURRENT VERSION OF BOARD J TX RX AUDIO 58 B 109K NORMAL SPKR LEVEL 1 86 8 DUPLEX MOSFET OFF TX RX Audio k AUDIO PA HI 19 15 gt 12 C6 1911 ROA 117 2297 Sheet 10 Rev B Highest Designators C310 N300 R306 TP301 0631 NEOG R644 V604 1 2 3 4 5 6 1 8 9 18 11 12 13 14 15 1R 47 AE LZB 119 1902 H1A SCHEMATIC DIAGRAM ROTARY SWITCH MODULE OC VOL 2 2 e 801 2 41pF N Ws VOL OF X1 PART 222 n CONT ON SH 12 1 8 SEE SHEET 18 CHAR KPROWO_F eo 2 C803 C804 805 862 4ToF 3 T 4 pF 4ToF KEYPAD INTERFACE nm je eur
40. ated 5 5 volts VTX from transmit regulator N190 is applied to N102 A Pin 8 V This voltage forward biases Schottky diodes V103 1 and V103 2 When forward biased diode V103 1 has 0 3 volts on the anode a reference voltage of 0 15 volts is on N102 A Pin 3 IN Forward biasing V103 2 causes a current to flow through directional coupler W100 PORT 3 and PORT 4 This circuit provides temperature compensation for power detection A voltage directly proportional to the RF power output is applied to N102 A Pin 2 IN This is due to the rectification of the coupled RF energy into V103 2 A negative DC voltage is developed at the anode of V103 2 proportional to the coupled RF power This negative DC voltage results in a positive DC voltage at the output of N102 A This output is the SENSE line and can be metered at test point TP102 At 3 watts output this voltage is typically between 2 8 Vdc and 3 2 Vdc This line connects to DEBBIE Pin 52 D601 through decoupling circuit resistors R602 and R603 and capacitor C601 DEBBIE converts this DC level to a digital word which is fed to the microprocessor in HILLARY This word is compared to the value in Tracking Data which represents 3 watts of output power A word is then generated and fed back to DEBBIE DEBBIE generates a TX POWER CONTROL DC signal on Pin 62 DACO1 This signal connects through a decoupling circuit consisting of resistors R614 and R615 and capacitor C605 to a voltage
41. bly EQUIPMENT REQUIRED 1 ProGrammer Programming AE LZY 213 7641 Software 2 Programming Interface Module TQ 3370 With Power Supply 19D438367G2 19B800850P2 3 Programming Cable TQ 3368 198801971 3 8 IBM PC XT AT 286 386 486 any true compatible with MS DOS version 3 3 or later customer supplied PROGRAMMING Personality Programming The ProGrammer PC Programmer AE LZY 213 7641 Version 1 or later is used to edit read or write the personality to the radio A personality is simply a computer file generated created by the user of the program The computer file or personality is downloaded into the radio and contains data that will direct certain operating characteristics of the radio unit The PC Programming software communicates with the radio through the TQ 3370 programming box item 2 in the equipment list Figure 7 provides a diagram of the Equipment Setup required to PC Program the radio The CONV 1 PC Programmer TQ 3367 Version 12 or later is used to program conventional only radios 18 Flash Programming The FLASH software is the current version of the LPE 200 radio operating software When changes and enhancements are made to the operating code the new operating code can be FLASHED to the radio upgrading the operating code without any hardware changes to the radio Flash software is simply a computer file which is read from a disk and downloaded to the radio using the
42. cations AE LZB 119 1902 DESCRIPTION The Ericsson Inc LPE 200 Portable Radios are rugged high quality high performance FM two way communications unit It is available in either Scan or System versions These are Ericsson s smallest and most sophisticated high specification portable radios designed to meet worldwide requirements They utilize custom designed integrated circuits to set new standards for size and weight for a high power high specification two way radio These radios are synthesized and can be programmed to operate on both EDACS trunked or conventional communications systems Features include Compact Size Designed small and light with rounded edges to fit comfortaby in your hand while providing specifications and performance superior to larger heavier radios e Light Weight Rugged Constructions Features a molded case made of a polycarbonate blend surrounding a metal casting This construction provides a lightweight yet durable housing designed to withstand years of rugged use High System Group Capacity Both the Scan and the System versions can manage up to 800 different EDACS system group combinations with up to 200 conventional channels 5 systems groups can be configured in many different ways to meet specific user needs Dual Mode Capability Conventional operation by simply selecting a pre programmed conventional system Transmit Indicator A red LED indicator on the top of
43. e collector ENABLE B to go low and enable the RF regulators The 5 A also goes to the emitter of PNP transistor V906 This caused V906 to conduct placing an active high on the Shut Down SHDN input of 5 switching regulator 02 The 5 also goes to the TX RX audio circuits in DEBBIE D601 5V D Switching Regulator 02 B is connected to N902 Pins 1 15 and 16 U When an active high is on N902 Pin 2 SHDN N902 turns on and produces 5V_D on the output to power all digital circuits AE LZB 119 1902 Processor Reset 5V D is connected through resistor R901 to open collector output N900 Pin 5 ERROR Timing is provided by pull up resistor R901 and capacitor C905 The ERROR voltage can be metered at test point TP903 This voltage is normally 5 Volts or 0 Vdc on reset This voltage also connects back to N902 Pin 7 SS Soft Start When capacitor C905 charges up the output of buffer gate D900 goes high This high on D701 Pin 1 RESPOW B starts the processor Power Switch Turned Off Due to software programming when the power switch is switched off the power to all circuits may not be immediately turned off For example the processor may need to transmit log off messages before that happens When the radio is turned on and the processor is started a PWR LATCH signal 2 6 Volts is applied to the base of transistor V903 turning it on The collector of V903 goes low and the enable lin
44. e to N900 is latched in a low state holding N900 on 900 can be held on indefinitely if programmed to do so A PWR SW SENSE line monitors the condition of the power switch so the processor knows when to start the power down program When the power switch is on diode V904 Pin 3 is low The 5 through resistor R911 forward biases V904 and holds the PWR SW SENSE line low When the power switch is turned off the diode is no longer forward biased Pull up resistor R911 now pulls PWR SW SENSE line high to indicate to the processor that the power switch has been turned off Low Battery Power Down The battery voltage is monitored with A D input to ATTIE To protect the battery against deep discharge conditions LOW BATT PWR OFF line is provided to shut the radio down until a fresh battery is attached When the battery voltage falls below 5 6 Volts diode V900 is forward biased conducting through V902 When the LOW BATT PWR OFF line is switched high V901 and V902 latch on forcing enable pin N900 3 high which results in shutting the radio off 17 AE LZB 119 1902 LCD NEGATIVE BIAS GENERATOR A 96 kHz 5V p p square wave from HILLARY D701 57 is rectified and inverted to a negative supply voltage by C922 V909 and C923 This negative voltage is controlled to the LCD by 910 to vary the display contrast Thermistor R604 is monitored via the A D input to DEBBIE As the temperature varies the bias is varied using 4 b
45. eet military standards MIL 810C D and E specifications for temperature and pressure extremes solar radiation driven rain humidity salt fog blowing dust shock and vibration Vibration Meets EIA U S Forest Service and MIL 810 environmental and vibration stability requirements Personality Programming Can easily be hooked up to a personal computer in the field to allow system and radio parameters to be flexibly programmed as requirements change without changing parts or opening the radio case MECHANICAL The radios are packaged in a polycarbonate blend exterior housing A six cell back mounted nickel cadmium battery pack provides a nominal 7 5 volts Two different nickel cadmium battery packs offering high and extended capacities are available for use with the portable radios The top of the radio has a Volume Channel Area System select knob Emergency Home button TX LED and a screw on antenna mount connector Located on the front is a 3 line 12 character per line dot matrix LCD with backlighting A chip on glass filtered super twisted nematic LCD with a transflective rear film is used 36 mm speaker and electret microphone are located above the LCD Below the speaker is either a 6 button keypad for Scan operation or a 15 button keypad for System operation A push to talk bar is located on the left side along with a Clear Monitor button and option button On the opposite side a UDC connector is located for plug in acce
46. er is through resistor R627 The gain of this amplifier is changed by the RX_VOL_ATTN line D701 Pin 116 to provide a total of 48 dB of volume control attenuation This is accomplished by the RX_VOL ATTN line going high causing transistor V604 1 to conduct and connecting 10k ohms resistor R626 across 68k ohms resistor R627 to reduce the gain of N300B The output of this amplifier is on Pin 7 RXAUD2 Audio Power Amplifier N600 This signal is attenuated through resistor R629 then coupled through coupling capacitor C613 to audio power amplifier N600A Pin 7 41 This signal is also connected through resistor R628 and coupling capacitor C612 to the Universal Device Connector UDC AUDIO OUT The audio input to N600A can be metered at test point TP602 and at maximum volume should be 250 The input will be 21 mV RMS 60 mV to produce 500 mWatts output into 16 ohms Power amplifiers N600A and N600B provide differential outputs on Pin 1 OUT which is AUDIO PA HI and Pin 3 OUT which is SPK LO The bridged output of these two lines provides 2 83 V RMS for 500 mWatts output into 16 ohms The SPK LO line connects through the flex circuit to the low side of the speaker The AUDIO PA HI connects through resistor R641 to the other side of the speaker 5 HI Resistor R641 is used to attenuate the speaker audio during duplex operation Normally MOSFET V602 is turned on by passing R641 to get the full volume to the speaker V602
47. ese n 11 HANDSET CHDATA_OUT UART HDATA IN 10414 SCL F 31 INTERFACE _ 34 UDATA 33 gx DATA OUT BINIO PT3 52 UDC_B 2 CEMER UDC B 9 112 MUTE QUT B F CLC MUTE OUT B mast M1 TX 3 Vo 0 162 PTT_UDC_B_F INTERFACE 7 23 PTT Unc B BINIO PT1 106 PTT B F PTT l 0 17 S _ BINIO PT7 il BINIO PT1534 0 15 TX_DATA_IN SERIAL NUMBER ROM D801 ISER NO 0 DS Highest Reference 0812 0801 855 TP800 806 TX RX Audio 1911 ROA 117 2297 Sheet 11 Rev B 48 SCHEMATIC DIAGRAM AE LZB 119 1902 H1A CONT ON 5 11 INT MIC HI 48 NT MIC HI 18 02 R865 CA B 14 AGND B SPKR_HI 9 39 _ 1 16 11 R866 14V 255 SPKR_LO gt SPKR LO C SV_A 16 B15 R867 14v P CAJ L S 1 5v_AnALos R868 9v VLCD gt VLCD D 16 11 R869 26 9v BACKLITE 2 BACKLITE 16 F11 RETO 9v 5 1 Be 1 816 8856 14v E LS B R857 12V_IN_FLASH 14V EXT MIC IN lt 9 EXT MIC IN 18 82 R858 F 2 F UDC TX B gt 28 7 TX B 16 06 8859 TO FLEX LS s SWA _OUT X 21 Sus QUT 14V 6 UDC SENSE 4 26 UDC SENSE IN 9 E5 R861 9v UDC AUDIO QUT 2 25 UDC AUDIO OUT 18 815 R862 9v
48. found in EEPROM is wrong size KEYLOAD CORRUPT TABLE SOFTWARE Key table has been corrupted in EEPROM Operational Software Non Fatal System Errors Software non fatal errors will be displayed for a short duration and then the radio will try to resume normal operation If the error persist the radio will continue to display the appropriate message everytime the error ocurrs Some of the errors listed below contain additional information to help solve the problem 25 AE LZB 119 1902 R1A Error Name Message Code Description number available failure RI DSPDOWN NOATTEMPT DSP ERR DSP not found RI DSPDOWN NOTFOUND DSP ERR DSP file not found RI DSPDOWN CRCFAIL DSP ERR DSP file is corrupted RI DSPDOWN ENCERR DSP ERR Radio feature encryption does not match DSP file radio or power cycle the radio DSP file is corrupted or hardware failure Reprogram radio or power cycle the radio 15 KEYLOAD NOBANKS NO KBANK Attempt to keyload radio w o bank storage NONE Attempt to keyload radio w o private DSP file Radio Programming Errors Programming errors are divided into three categories Protocol Errors Produced By The Low Level Communication Routines Description Successful 70 Command was performed successfully command 7 eee command Protocol Terminate transmission x328 protocol received an end of transmission Protocol Transmit error x328 protocol co
49. gh C560 variable capacitor V550 and inductor L551 This tank circuit connects to N551 Pin 3 OSC Emitter and Pin 4 OSC Base A LO VCTRL control voltage is applied through resistor R555 to V550 to adjust the capacity of the circuit and maintain the integrity of the injection frequency The LO VCTRL control voltage is a DC level generated in CHERYL and filtered by resistors R225 and R226 and capacitors C217 C218 and C219 This voltage nominally 2 6 volts comes from auxiliary synthesizer N204 and goes to the oscillator tank circuit A 12 dB signal is then returned to a prescaler circuit in the synthesizer The synthesizer provides a signal to the loop filter which outputs the control voltage 11 AE LZB 119 1902 Digital I O Lines The balanced RxIF and RxIF_B B implies Barred indicating that the condition is true when the line is low lines connect through resistor and capacitor RF decoupling circuits to HILLARY 701 RxIF connects through resistors R715 and R714 and capacitor C707 to D701 Pin 8 RxIF_B connects through resistors R717 and R718 and capacitor C709 to D701 Pin 7 Both of these lines connect to a Phase Digitizer internal to D701 Phase Digitizer D701 The phase digitizer demodulates the 450 kHz IF to recover the digitized receive audio The output of the phase demodulator is connected to Rx DSP Interface Refer to Schematic Diagram Sheet 13 The Rx DSP Interface output of D701 connects to the DSP
50. ich prevents RF from flowing into the RX port The voltage on the cathode of V101 5 3 Vdc connects through inductor L104 capacitor C112 resistor R100 capacitor C113 and inductor L107 to the input of the MMIC buffer amplifier See MMIC Buffer Amplifier Transmit Modulation The microphone input is through capacitor C300 and resistor R301 to operational amplifier N300 Pin 2 A Refer to Schematic Diagram sheet 10 The output of N300 is on Pin 1 Out A This output is connected to DEBBIE D601 Pin 19 AUX This audio signal is amplified limited passed through a low pass filter and an encoder circuit where the analog signal is digitized The digitized output of the encoder connects through D601 Pin 35 DPCO to HILLARY D701 Pin 41 PCM_CDCMIC where it is connected to a PCM interface The output of the interface connects through D701 Pin 68 to the DSP module through X11 18 See Schematic Diagram Sheet 13 The actual connection to the DSP board is at X21 18 PMC_DSPMIC The transmit digitized audio can be metered at test point TP6 on the DSP board This signal is then connected to D1 Pin 63 DR The audio is filtered AE LZB 119 1902 R1A and connected through D1 Pin 133 TDX to X21 13 TXSIF_DSPDATA This signal can be metered at test point TP4 This connection then connects through X11 13 to HILLARY D701 Pin 77 where it goes through a TX DSP INTERFACE The output of the interface applies the digitized audio to the inp
51. inary output lines from HILLARY LCD BIAS 0 LCD BIAS 1 LCD BIAS 2 LCD BIAS 3 SERVICE Due to the state of the art manufacturing processes and the complexity of the circuits designed into the radio field test and repair to the hardware is very limited It is not practical to service the main circuit board in this radio to component level Technicians servicing this radio should be concerned with isolating the problem to hardware or software Software errors or problems are usually corrected by reloading the personality flash etc NOTE It is recommended that all hardware repairs to the main circuit board be done at Ericsson Inc in Lynchburg VA On occasion it may become necessary to perform certain hardware repairs in the field Therefore Service Parts will provide replacement parts for the following hardware items Hex Assembly Keypad Loudspeaker Vol Grp Switch Module Battery Connector Rx RF Hilter 7400 Module Rx RF Hilter Z401 DSP Module Fuse Main PCB Assembly Keeping in mind the service philosophy for this product it is not the intent of this service section to provide detailed instructions for testing and troubleshooting the portable radio This section will provide the following Programming instructions Flash and Equipment Setup Personality e Basic Troubleshooting determine hardware or software if problem is e Error Codes e Dissassem
52. ing capacitors C121 and C139 to the base of buffer amplifier transistor V104 Filtering is provided by capacitor C120 MMIC Buffer Amplifier When transmitting the collector voltage for transistor 104 is provided through PIN diode V101 and is controlled by DPTT The RF output from the collector 3 dBM connects through coupling capacitor C116 and resistor R105 to power amplifier N101 Pin 1 SAW Transmit Band Pass Filter 2 The output of the MMIC Buffer amplifier is fed to the input of the second SAW BPF This filter provides further attenuation for Tx spurions The output of this filter is fed to the RF amplifier Power Amplifier N101 Power amplifier N101 is a three stage Class C operated RF power amplifier module designed to operate over the frequency range of 896 940 MHz see Figure 5 reg 5 Vdd2 Vdd3 Pout IK Pin Vc Figure 5 Power Amplifier Directional Coupler W100 The RF output connected to W100 Pin 4 PORT 2 connects directly through W100 to Pin 1 PORT 1 where it is output to the antenna circuit The connection between Pin 9 PORT 3 and Pin 6 PORT 4 is part of the sensing circuit See Figure 4 RF Output RF Input amp Ny Power Sense Circuit N102 A Figure 6 Directional Coupler Power Sensor Circuit N102 A The power sensor circuit consist of part of W100 comparator amplifier N102 A and associated circuitry in between A regul
53. itch PNP transistor V191 goes low B Switch V191 B Switch transistor V191 supplies 7 0 volts to the directional coupler in the antenna circuit When the base of this PNP transistor goes low 7 0 volts is on the collector and can be metered at test point TP191 This voltage goes to directional coupler W100 Pin 1 PORT 1 The B Switch circuit and the TX Switch circuit are tagged BUFFER on the Block Diagram Sheet 1 of the Schematic Diagram Analog Regulator N900 Battery voltage connects directly to analog regulator N900 Pin 8 Input Capacitor C900 provides filtering at this point To enable N900 Pin 3 EN must be grounded This is accomplished by grounding one end of resistor R912 when the power switch is turned on The voltage divider relationship between pull up resistor 909 and resistor R910 is enough to produce a ground which will enable N900 This signal is typically 0 6 Volts when the radio is on and 2 0 volts when the radio is off and can be metered at test point TP904 The ground at R912 can be metered at test point TP907 and is 0 Vdc when the power switch is on and 7 5 Vdc when the power switch is off When enabled the output on N900 Pin 1 is a regulated 5 Volts This voltage can be metered at test point TP901 Filtering is provided by capacitor C901 The output of N900 becomes the 5 line The 5 A connects to the base of transistor V905 causing V905 to conduct Transistor V905 conducting causes th
54. n Rev E 4 32 13 is required and must be ordered separately Item 14 is required and must be ordered separately COMPONENTS ADDED DELETED OR CHANGED BY PRODUCTION CHANGES ALL BENDS TO BE 1 mm INNER DIAMETER MINIMUM NO CREASE BENDS 180 UNLESS OTHERWISE NOTED INSIDE OF BEND RADIUS ON FRONT SIDE INSIDE OF BEND RADIUS ON BACK SIDE PTT AND UDC BOARDS ARE NOT SHOWN FOR CLARITY ASSEMBLY DIAGRAM AND PARTS LIST AE LZB 119 1902 Front Assembly System SXK 107 3808 SYMBOL PART NUMBER DESCRIPTION UDC 2 SXA 120 4115 02 Keypad System LPE 200 3 SXA 120 4122 Keypad Retainer 4 117 2216 Flex Assembly Printed Bd 6 120 4119 Speaker Gasket 2 7 RLE 906 18 2 Loudspeaker 8 SXA 120 4121 PTT Actuator 9 SXA 120 4120 Side Control Bezel 10 SXA 120 4136 Side Control Keypad 11 SXA 120 4128 Gasket UDC PWB 12 SXA 120 4129 Gasket PTT 13 SVF 930 1252 UDC Label 14 SXA 120 4157 Mike Pad 15 SXA 120 4217 Speaker Insulator Item 13 is required and must be ordered separately Item 14 is required and must be ordered separately COMPONENTS ADDED DELETED OR CHANGED BY PRODUCTION CHANGES 57 Ei HAND FOLD 90 NOT TOUCH TRIM FLEX FLUSH TO STIFFENER WITHIN 0 5 EZEL OPENING KEYPAD RS SLOTS 2 PL ALL BENDS TO BE mm INNER DIAMETER MINIMUM NO CREASE BENDS
55. nality storage This software supports read write of EEPROM data such as Tracking Data and Feature Encryption Data compression is used to reduce FLASH application loading time FLASH Application Software the main radio controller software It is divided into the platform and application modules The platform software provides the hardware level interface operating system run time libraries and software standby sleep operation application software provides all of the user interface trunked signaling conventional signaling diagnostics debugging capability UDC device support and personality interface DSP software includes Audio Processing Transmit Audio Processing Receive Transmit Waveform Generation e Transmit Waveform Combinations Demodulation Decoding e Demodulation Decoding Combinations RECEIVER RX Front End The 935 940 MHz RF receive frequency is passed from the antenna through a low pass filter antenna switch to the input of fixed ceramic band pass filter Z400 Pin 1 The band pass center frequency is 938 MHz and the gain through the filter is typically 1 5 dB The output of Z400 Pin 2 is coupled through capacitor C400 and impedance matching inductor L400 to the base of RF amplifier transistor V400 RF Amplifier V400 RF amplifier transistor V400 provides typically 16 dB of gain to the RF signal The gain of this stage is controlled by feedback voltage from IF AMP
56. oltage which is the difference of the two input frequencies on N150 Pin 9 PHSOUT is applied to a loop filter This loop filter consists of capacitors C151 C152 and C155 and resistors R153 and R154 The DC voltage can be metered at test point TP150 and should be 1 4 volts while transmitting and 0 volts while 896 MHz 115 2 MHz gt AE LZB 119 1902 receiving The output of the filter connects to the tank circuit through resistors R155 and R160 The tank circuit for the VCO and consists of capacitors C160 C161 and two variable capacitors in V180 and inductor L154 The loop filter and the tank circuit are tuned to 6x19 2 MHz or 115 2 MHz The tank circuit connects across N150 Pins 6 TANK 1 and 7 TANK 2 The DC voltage applied to the loop filter changes the capacitance of the variable capacitors within V180 of the tank circuit to maintain the VCO output of 115 2 MHz When the transmitter is keyed transistor V152 conducts to increase the bandwidth for PLL acquisition Single Side Band Mixer The main VCO frequency is amplified then passed through a 90 degrees phase shifting network to the SSB mixer The 115 2 MHz offset frequency is also amplified and passed through a 90 degree phasing network to the SSB mixer These two signals are summed together to produce the carrier frequency an upper side band and a lower side band The carrier and upper side band are suppressed by 40 dB The lower side band passes a
57. om HILLARY connects to N201 Pin 5 2 contra causing N201 to switch in the required resistor capacitor combinations The selected loop connects to the VCO at U200 Pin 2 Vcont Main Voltage Controlled Oscillator U200 A signal from HILLARY VCO BAND 1 turns transistor V201 on or off to select the band over which the VCO will operate The collector output of V201 connects to U200 Pin 10 SW The output of U200 on Pin 8 Output connects through buffer transistor V200 to the RX LO through coupling capacitor C208 The TX LO is taken from the voltage divider consisting of resistors R203 and R205 The feedback for the synthesizer circuit is taken from 15 AE LZB 119 1902 the voltage divider consisting of resistors R202 and R204 and can be metered at test point TP202 The level of this signal is typically 25 mV RMS This feedback signal connects through coupling capacitor C207 to N203 Pin 5 The voltage level at this point is typically 4 5 V Main Synthesizer N203 In synthesizer N203 the feedback signal from the VCO is input to a prescaler where it is divided down to produce a 19 2 MHz signal This signal is compared with the 19 2 MHz reference frequency generated by reference oscillator U201 When these two signals are equal a lock voltage is connected through N203 Pin 13 PHD or Pin 14 PHP to the selected loop filter locking the circuit to the output frequency Auxiliary Synthesizer N203 The V
58. or to transmission 2 to remove Channel Guard Decoding from a channel Option Button The weather sealed option button activates one of a number of programmable software options selected during PC programming Programmable options include high low power setting keypad lock LCD contrast LCD and keypad back lighting System Group Power On Off Channel Knob Volume Knob Antenna Option Button Clear Monitor Button Push To Talk PTT Button ah Figure 1 Controls Top Back and Left Panel Views KEYPAD SCAN SYSTEM FUNCTIONS Primary Function Allows user to select either system groups or channels depending on personality programming The buttons act as STEP UP or STEP DOWN Pressing one of these buttons displays the next or previous stored system group or channel Secondary Function Changes the selection for an item within a list Primary Function Accesses the pre stored menu The menu can include high low power setting keypad lock LCD contrast LCD and keypad back lighting Secondary Function Activates a selected item within a list After a menu list is accessed scroll through the list using the A V keys and then activate specific items with the M key This is similar to an Enter key AE LZB 119 1902 R1A Adds Deletes selected groups or channels from the Scan list of the currently selected system Turns the Scan operation On and Off Activates one of a numbe
59. personality table does not exist tracking or encryption table 27 AE LZB 119 1902 DISASSEMBLY PROCEDURE Figure 11 To disassemble the LPE 200 radio 5 Once the plastic snaps have been released separate the metal frame from the front cover First lift up on the Figure 9 bottom of the metal frame and then slide and lift the 1 Remove the battery pack by pushing the battery release metal frame down and away from the front cover button and sliding the battery pack straight back until it stops then lift the battery pack out When replacing the battery pack align the ribs on the sides of the battery pack with the slots in the sides of the radio Push down and slide the battery pack into place NOTE If the radio is equipped with a belt clip it may be necessary to lift up on the clip when replacing battery pack Figure 11 Metal Frame Separated From The Front Cover Figure 12 6 Carefully unplug the flex circuit at the bottom of the radio C 7 Remove gasket Note when replacing the gasket watch for bulging sections 8 Using a flat head screw driver remove the PA nuts at Figure 9 Removing the Battery Pack D Figure 10 9 Pry clips loose from both sides of the metal frame at 2 Remove the control knobs and stop washer E 3 Using a 7 50 driver remove the screws at A 4 Insert a small flat head screwdriver between the plastic front cover and the metal frame at loca
60. r recommended or Troubleshoot Main Board using the test point diagrams in Figure 8 Replace or repair board as required Transmitter and Receiver Programmed Incorrectly check personality Inoperative on some channels 2 Main Board failure Return to Lynchburg Depot for repair recommended or Troubleshoot Main Board using the test point diagrams in Figure 8 Replace or repair board as required 20 FER z Essi 253 aad Ce soci 0123 5 x a Og EI Y m EI oak E od 1111118111 got alt m 50 0 _30 0308080 D 54 9 1 0990005085 8 0205318104 0 io ALL r 5 8 808189 oo 81 REP x RECEIVE TP400 52 dBm TP500 30 dBm Note Receive RF levels measured with a 50 dBm signal injected at the antenna port TRANSMIT 103 2 5 3 0 volts 3 watts TP102 2 8 3 2 volts 3 watts Note Transmit
61. r of programmable software options selected during the PC programming Programmable options include high low transmitter power and talk around Used to select a specific system If the rotary knob is used to select the system and more than 16 systems are programmed in the radio the key is used to select additional banks groupings of systems These keys are used to place telephone interconnect and individual unit to unit calls The keys operate like a normal telephone keypad Used to select a specific group Used to turn the SCAN operation on and off Used to place telephone interconnect calls Used to initiate individual calls Adds groups or channels from the Scan list of the currently selected system Deletes selected groups or channels from Scan list of the currently selected system AE LZB 119 1902 CIRCUIT ANALYSIS The portable radio is unique in the generation of the transmit carrier transmit section has an offset frequency loop operating at 115 2 MHz This means the synthesizer is operating at a frequency that is not harmonically related to the output frequency The radio contains five custom integrated circuits as follows e DEBBIE D601 Has three major functions digitizing voice CODEC and digital to analog conversions HILLARY D701 Contains the microprocessor phase digitizer frequency discriminator and sigma delta modulator to provide digital modulation JAC
62. rs DISASSEMBLY PROCEDURE PA Module Replacement Filters Z400 And Z401 Replacement REASSEMBLY SPECIFICATIONS GENERAL FCC Identification Number AXATR 357 A2 DOC Certification Number Input Voltage 7 5 nominal Frequency Range Transmit 896 901 MHz 935 940 MHz Receive 935 940 MHz Frequency Stability 1 5 PPM Dimensions Typical H W D Less knobs and antenna with High Capacity Battery 144 mm x 67 mm x 43 mm with Extra High Capacity Battery 157 mm x 67 mm x 43 mm Weight with High Capacity Battery 20 8 oz 589 g with Extra High Capacity Battery 22 0 oz 624g Operable Temperature Range 30 to 60 C 22 F to 140 Continued RECEIVE Channel Spacing Sensitivity 12 dB SINAD Selectivity Intermodulation Frequency Separation Audio Output TRANSMIT RF Power Output Spurious and Harmonics Modulation Deviation Frequency Separation FM Hum amp Noise Companion Receiver Audio Distortion Frequency Stability 309 to 60 C 25 Ref Audio Frequency Response AE LZB 119 1902 SPECIFICATIONS Con t 12 5 kHz 11848 63 dB 67 dB Full Bandwidth 500 mW 3 Maximum Distortion 0 5 3 Watts Normal Trunked 55 dBc 2 5 kHz Full Bandwidth 35 dB Less than 3 9 1000 Hz 3 kHz deviation 1 5 PPM EIA These specifications are intended primarily for the use of the service technician See the appropriate Specification Sheet for the complete specifi
63. splayed for a short period about two seconds then normal radio operation will resume Non Fatal Errors Error message Description Special Error Codes When the synthesizer becomes unlocked on any frequency RX or TX the radio will display a message and sound an alert tone The message will be displayed for approximately 2 seconds and the alert tone will continuously beep on and off During this time the radio is trying to reload the synthesizer to get a lock condition If the lock condition is achieved the unlock indications will cease If the lock condition can not be achieved the user will not be able to RX or TX on that frequency The message displayed on the radio is shown below SYHTIHSZE UNLOCKED ERROR CODES SPECIFIC Hardware Fatal System Errors Hardware fatal errors will automatically reset the radio When the radio reset does not correct the problem the radio must be serviced FATAL SYS TRAP HARDWARE jFatalsystememortrapnumber FATAL SCI LOAD HARDWARE 20 Serial communication interface driver failed initialization FATAL DC NOSI HARDWARE I2C failed to return SI status AE LZB 119 1902 R1A FATAL LCD NOACK HARDWARE LCD did not ack message FATAL LCD HARD FAIL HARDWARE 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 FATAL DSP FIFOOVR HARDWARE DSP RX FIFO overflo
64. ssories and PC programming One printed wire board assembly contains the transmitter receiver audio and logic circuitry A separate printed wire board assembly daughter board contains the DSP Module The radio board assembly is cradled in a zinc die casting which is used as a PA heat sink and for housing rigidity A sheet metal shield completes the RF shielding The keypad and LCD assembly are separate from the main board and interconnect by a flex circuit This flex circuit also interconnects the speaker microphone and UDC assemblies Top controls mount to another flex circuit board that plugs into the main radio board assembly Radio circuitry is centered mainly on one radio board This board is mounted in a metal housing with a metal shield covering the top of the board This enclosure is penetrated only by a flex cable which ties the front user interface part of the radio to the board and a 3 pin battery connector Surface mount components populate both top and bottom of the radio board allowing a combination of both RF and digital circuits Only a few leaded parts are used where no surface mount components are available AE LZB 119 1902 OPTIONS AND ACCESSORIES Batteries BKB 191 203 High Capacity NICAD Battery BKB 191 202 Extra High Capacity NICAD Battery High Capacity NICAD Battery FM Intrinsically Safe BKB 191 203 A2 BKB 191 202 A2 Extra High Capacity NICAD Battery FM Intrinsically Safe Chargers
65. t full amplitude There are two outputs of the lower side band from the SSB each 90 degrees out of phase Each signal is connected to another mixer circuit where it is summed with the transmit modulation from HILLARY Resistor R159 sets the gain for phase detection Low Pass Filters There are two modulating inputs from HILLARY one is the I input MODI and MODI and one is the Q input Figure 4 Frequency Generation AE LZB 119 1902 MODQ and MODQ B The I input passes through a low pass filter consisting of capacitors C191 C192 and C193 resistor R166 and inductors 1 156 and L157 output of this filter connects to N150 Pins 43 D and 42 1 bar Q input passes through a low pass filter consisting of capacitors C194 C195 and C196 resistor R167 and inductor L158 and L159 The output of this low pass filter connects to N150 Pins 41 Q and 40 Q bar The I and Q inputs are summed with the lower side band then the outputs of these mixer circuits are summed to produce the lower side band with transmit modulation This signal is amplified and connected through N150 Pin 34 DUAL TX to the input of a transmit band pass filter SAW Transmit Band Pass Filter 1 The TX RF signal 0 dBm connects through coupling capacitor C125 to the input of a TX Band Pass Filter Filtering of the TX RF line is provided by capacitor C126 The lower sideband output of the band pass filter 8 dB connects through coupl
66. the switch assembly must be removed first 16 Unscrew the RF nut Remove the switch being careful not to lose the washer Figure 18 Removing the Antenna Switch 30 PA Module Replacement Remove the PA Module by unsoldering the five 5 leads attached to the Main Board see the Outline Diagram Solder new module in same location Filters 7400 And Z401 Replacement Filter Z400 has four 4 leads that go all the way through the board and are soldered on the reverse side of the board Unsolder the four leads to remove Z400 Filter 7401 also has four leads But 7401 is surface mounted on the same side of the board Unsolder the leads to remove Z401 REASSEMBLY Reassemble the radio by reversing the instructions steps 1 16 provided in the Dissassembly Section ASSEMBLY DIAGRAM AND PARTS LIST AE LZB 119 1902 LPE 200 Radio 900 MHz SYMBOL PART NUMBER DESCRIPTION 1 SXK 107 3807 2 Front Assembly LPE 200 Scan VOLUME SWITCH CHANNEL SELECT 1 SXK 107 3808 2 Front Assembly SWITCH LPE 2 y SWITCH GUARDS 00 System 2 SXK 107 3815 Rear Assembly SEAL FACE 896 940 MHz TX MARRIAGE HARDWARE KIT 3 SXA 120 4145 Main Gasket 4 SBA 124 025 0080 Screw 2 RECESS __ sy 6 SXA 120 4118 Washer Stop Knob KNOB RECESS 7 SXA 120 4117 Channel Knob SWITCH OFENINGS 8 SXA 120 4116 Volume Knob 21 SVA 230 01 08 Nameplate LPE 200
67. tion B Gently pry each side of the plastic front cover out while prying the metal frame up to release the plastic snaps securing the metal frame to the front cover Figure 12 Remove Flex Circuit PA Nuts And Side Clips Figure 10 Removing Front Cover 28 AE LZB 119 1902 Figure 13 Figure 15 10 Using a flat blade screwdriver push on the battery 12 Remove the board from the shield by prying up on a contacts careful not to damage the gasket corner and working around the board to release the Applying pressure on the battery contacts will slowly snaps separate the main circuit board and shield from the metal frame Figure 13 Push Battery Contacts Figure 14 Figure 15 Separating Board From Shield 11 Carefully unplug the small flex at the top of the radio F Figure 16 NOTE This connector is not keyed When replacing be careful 13 To remove the switch assembly use a small flat blade screw driver and pry up on the bottom latch to plug back properly Figure 16 Removing the Switch Assembly Pry up on bottom latch Figure 14 Board Shield Separated From Metal Frame 29 AE LZB 119 1902 Figure 17 14 Pry up on the hook to release from the latch and push down on the switches to remove the assembly from the housing Figure 17 Removing Switch Assembly Pry up on the latch Figure 18 15 To remove the Antenna Switch Assembly
68. tion code is loaded radio can not accept personality commands Reprogram the operating software flash code and 3 Radio Transmit error Radio could not transmit the required data Check all hardware reprogram personality Radio Application code error The radio application code failed to perform the command Radio EEPROM programming error Could not program the radio EEPROM part Radio Baud rate has changed 2 The radio acknowledged a successful baud communication baud rate change PC Errors Produced By The PC Programming Software Message PC Cannot allocate memory 50 The PC programming software could not allocate adequate Y PC Cannot open data file 51 The specified file code or personality could not be opened PC File not found 54 The specified file code or personality is not found in the current directory PC File is larger than radio memory 55 The radio flash part size is unknown or the operating software file size is larger than the radio s flash memory size PC Incorrect Tracking data RF band split PC Incorrect Tracking data version Incorrect tracking data RF band split Incorrect tracking data version PC Tracking data check sum error Tracking data check sum error PC Time out radio not responding Radio not connected or not turned on or the selected PC m PC Requested personality data does not exist The
69. uld not transmit Reliable communication can not be established It could be radio or PC hardware problems programming cable interface box or radio hardware Protocol Protocol initialization error 9 x328 protocol not initialized or failed to initialize Radio Errors That Are Returned From The Bootloader Software Message Code Description Radio Programmed successfully 10 Radio responded with a success Radio acknowledged successful programming Radio Comport configuration failed Radio could not configure its comport hardware failure Radio Flash erase failed Radio failed to erase the flash memory The radio flash memory part is unusable or it can not detect the 12 volts power Check the programming box and cables Flash code not programmed correctly CRC did not match the operating software will not execute Re program the radio Radio Flash write failed 13 Radio failed in writing to the flash memory Retry the programming process hardware failure Radio Flash code CRC did not match AE LZB 119 1902 R1A Radio Canceled by receiver 15 The radio operating software received a cancel command Radio Canceled by sender Radio End of transmission received 17 The radio software received sent an end of transmission connections and try programming again Radio Invalid command Radio did not understand the received command 15 16 17 18 Radio No application code 20 No applica
70. unking networks For more detailed operating instructions refer to Operator s Manual AE LZT 123 1868 CONTROLS The radio features two rotary control knobs and an emergency button mounted on the top of the radio with side mounted push to talk monitor clear and option buttons The front mounted keypad has 6 buttons on the Scan and 15 buttons on the System refer to Figure 1 Power Volume Knob This knob controls power to the radio On Off and adjusts the Volume level of the speaker Control Knob A 16 position rotary switch can select systems groups or conventional channels The knob is fitted with a variable hardware stop for radio customization Emergency Button A recessed red button on the top of the radio initiates an emergency alert to the dispatcher and talk group members Button The weather sealed Push To Talk PTT button must be pressed before voice transmission begins Pressing the PTT button transmits the unit ID In trunked mode the ID is transmitted upon depression of the PTT button Clear Monitor Button In the trunked mode the weather sealed Clear Monitor button is used 1 to exit the current operation removing all displays associated with it and return the radio to the selected talk group 2 to hang up individual and telephone interconnect calls In the conventional mode the Clear Monitor button functions are 1 tounsquelch the receiver to allow channel monitoring pri
71. ut of a sigma delta modulator or DAC In the sigma delta modulator a sample of the audio is taken at a 19 2 MHz rate This generates a pulse that the width varies with the audio The outputs of the DAC are through D701 Pin 15 MODD Pin 14 MODI B Pin 16 MODQ and Pin 17 MODQ B The pulse rate of each of these outputs is 9 6 MHz or one half of the 19 2 MHz clock rate These outputs are connected through low pass filters to the inputs of JACQUI N150 where modulation takes place The output of the low pass filters is a true analog signal consisting of complex wave forms and a pulse of 800 mV Peak Peak SYNTHESIZER Dual Synthesizers N203 There are two synthesizers in the synthesizer circuit One is the main synthesizer which generates the Ist LO frequency 1011 2 to 1016 2 MHz The other synthesizer circuit is the auxiliary synthesizer which generates the 2nd LO frequency 76 65 MHz These synthesizer circuits are programmed by STROBE 1 CLOCK and DATA These programming inputs also go to JACQUI The only difference is that JACQUI uses STROBE 2 This is so that when strobed the programming information gets written to the proper device The main synthesizer can programmed in 12 5 kHz steps These inputs can be metered at TP205 CLOCK TP206 DATA and TP207 STROBE 1 Bilateral Switch N201 Bilateral Switch N201 selects the loop filter required for programming the main VCO in 12 5 kHz steps A 5 Volt signal LOOP_SEL fr
72. w FATAL RXSIF HARDWARE 9 Phasesamplesare not changing Operational Software Fatal System Errors Software fatal errors will automatically reset the radio When the radio reset does not correct the problem the radio must be serviced Some of the errors listed below contain additional information to help resolve the problem Error Name Message Code Description tracking data the personality the personality Reprogram the tracking data Reprogram the tracking data DACS MODEM FATAL ERROR SOFTWARE 301 Unable to correctly configure the modem for EDACS operation Reprogram the personality DACS RADC FAILURE SOFTWARE Power cycle the radio DACS TU PUT CISYSMSG ERROR SOFTWARE CI message buffer is not enabled CONV RADC ERROR SOFTWARE Error calling RADC function Power cycle the radio CONV UIMSG ERROR SOFTWARE UI message buffer not enabled Power cycle the radio CONV MODEM RXOVR SOFTWARE Conventional DIGV modem overflow MODEM RXAVR SOFTWARE Conventional DIGV modem underflow CONV MODEM FATAL ERROR SOFTWARE 405 Unable to correctly configure the modem for conventional DIGV operation CONV PERS ERROR PERSDATA Conventional personality error personality EEPROM Reprogram the personality Reprogram the personality AE LZB 119 1902 PI MALLOC ERROR SOFTWARE 503 Could not allocate memory to store crucial personality data UI FATAL DEVICE ERROR Input output device error

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