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3URJUDPPHV $IWHU 0DUNHW 6HUYLFHV 7HFKQLFDO 'RFXPHQWDWLRQ $PHQGPHQW 5HFRUG 6KHHW Amendment No Date Inserted By Comments 04/2002 J Fraser Issue 1 ,668( &RS\ULJKW 1RNLD &RUSRUDWLRQ $OO 5LJKWV 5HVHUYHG...
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3URJUDPPHV $IWHU 0DUNHW 6HUYLFHV 7HFKQLFDO 'RFXPHQWDWLRQ 13: 2YHUDOO 0DQXDO &RQWHQWV General Information System Module Parts List Variants Service Software Instructions Service Tools Disassembly/Assembly Troubleshooting Accessories Schematics ,668( &RS\ULJKW 1RNLD &RUSRUDWLRQ $OO 5LJKWV 5HVHUYHG...
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NPW-3 PAMS Technical Documentation 3. System Module Contents 3DJH 1R Transceiver NPW-3......................7 Introduction ........................7 External Connectors and Main Interfaces ..............7 Contacts Description ....................7 Battery Connector ......................8 Battery Contact Signals ..................... 8 Supply Voltages and Power Consumption..............8 Headset Connector ....................9 Baseband Module, Functional Description..............
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NPW-3 3. System Module PAMS Technical Documentation Uncontrolled Power Down ..................21 Power Down when Watchdog expires ..............21 Battery Disconnected ....................21 Battery Disconnected when charger is connected........... 21 Sleep Mode ........................22 Entering the Sleep mode ..................22 Waking up from the Sleep mode................22 Charging Control .......................22...
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NPW-3 PAMS Technical Documentation 3. System Module Digital Mode RSSI ....................40 RF Block Specifications ....................40 Receiver........................40 DAMPS 800 MHz RX Front End ................40 TDMA 1900 MHz RX Front End ................41 SAW Filter ......................42 Analog IF Parts......................42 Digital IF Parts ......................
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NPW-3 3. System Module PAMS Technical Documentation DUAL BAND OPERATION Freq. 2 mA doubler 2 mA RFCEN 19.44 MHz 6 mA presc. VCTCXO 2 mA 3* Multiplier Bias VREF 8 mA UHF– 10 mA SPWR1 presc. & PLL 5 mA (peak) Phase det.
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NPW-3 PAMS Technical Documentation 8. Disassembly / Assembly Contents 3DJH 1R Disassembly ........................5 A-Cover........................5 Screws x 6 (4 x long top/bottom) (2 x short middle) ..........6 UI Snap Fit ........................ 6 Speaker ........................7 Radio Module......................7 System Connector .....................
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NPW-3 PAMS Technical Documentation 9. Troubleshooting Contents 3DJH 1R Troubleshooting ......................5 Phone is Totally Dead ....................6 Flash Programming Doesn’t Work ................7 Phone Doesn’t Stay on or Phone is Jammed ...............8 Phone Doesn’t Register to the Network or Phone Doesn’t Make a Call .....9 Charging Failure ......................11...
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NPW-3 9. Troubleshooting PAMS Technical Documentation Phone doesn’t register to the network or phone doesn’t’ make a call Analog supply voltage VR6 is> 2.7 V of Cobba Check (N250) at C275 N250 Analog reference voltage Vref is 1.5 of Cobba...
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NPW-3 PAMS Technical Documentation 9. Troubleshooting &KDUJLQJ )DLOXUH Phone doesn’t register to the network or phone doesn’t’ make a call Analog supply voltage VR6 is> 2.7 V of Cobba Check (N250) at C275 N250 Analog reference voltage Vref is 1.5 of Cobba...
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NPW-3 9. Troubleshooting PAMS Technical Documentation $036 5; Apply 879.00 MHz -116dBm, 8Khz dev, 1 Khz sine signal to the antenna pad Connect EXT HS to audio AMPS RX- analyzator, open audio AF: 1 chain OK KHz sine signal, meas SINAD AF: >12 db...
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NPW-3 PAMS Technical Documentation 9. Troubleshooting Note: Check input of EROTUS if Change Z741 Check all components around filter amplifier at R744 P:=55dbm Note: Check voltages around EROTUS Check LIMIN1 Check R764 Level at C768 and C769 Note: AG2 is on = gain is in low state...
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NPW-3 9. Troubleshooting PAMS Technical Documentation 7'0$ 5; Apply 879.00 Mhz -50dBm Note: signal to antenna interface If AMPS RX check is OK, then only components in AGC1, OUT_rx, IN_rxif and OUT_rxif-lines need to be checked TDMA800RX- Check RF level of COBBA_D...
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NPW-3 PAMS Technical Documentation 9. Troubleshooting Check input of Change Z741 Note: EROTUS IF amplifier at R744 Check all components around filter Change Filters Check INP_rxif level at R763 Note: Z750 & Z751 Check all components around filters Change Note:...
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NPW-3 9. Troubleshooting PAMS Technical Documentation 7'0$ 5; Note: Apply 1960.02 MHz-50dBm If RX800 is OK, then RX1900 troubleshooting signal to Antenna interface should beconcentrated only on Z960 and N721 area and surrounding components. TDMA 1900 Check RF level of COBBA_D...
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NPW-3 PAMS Technical Documentation 9. Troubleshooting Check input of EROTUS IF amplifier Change Z741 Note: at R744 Check all components around filter Change Filters Check INP_rxif level at R763 Note: Z750 and Z751 Check all components around filters Change Note:...
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NPW-3 PAMS Technical Documentation 9. Troubleshooting Note: In AMPS mode PA pin 16 bias- AMPS, PL2, CH 383 Voltage should be >2.2V. Check all supply voltages and solderings. Check Antenna Circuit and Check also N900 pin3 frequesncy Check current consumption Duplex-filter.
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NPW-3 9. Troubleshooting PAMS Technical Documentation Check TXIF Z900 Pin7 f: 161.19 MHz Change upconverter N900 P:>-25 dBm Is Z900 insertion loss too hight? Change filter Z900 IL>5 dB Note: Check modulator output at R925 P=-18dBm max Check also I/Q-resistors...
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NPW-3 PAMS Technical Documentation 9. Troubleshooting 0+] RVFLOODWRU VCTCXO OUTPUT: 19.44 MHz G850 Change G850 P:>0.8 Vpp Note: Check all soldering and supply voltages for VCTCXO and RFC buffer. Chec coil L850 Check AFC signal from G850, pin 1 Change resistor R851 V=1.05V...
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NPW-3 9. Troubleshooting PAMS Technical Documentation Check VAPC Check PA input power Change PA V:>2.5 V P:>0 dBm Check Z975 filter Check TXC Typ: 1.5V@PL2 Change Z975 insertion loss IL>4 dB Start power control Check TX-driver Change N951 troubleshooting input P:>-20 dBm...
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NPW-3 PAMS Technical Documentation 9. Troubleshooting Is oscillator locked? Note: The Oscillator is locked when the frequeency is stable. Check EROTUS Check oscillator output level at C744 (N700) (SCLK):2.8V P:_______ (SDATA): 2.8V (SENA1): 2.8V Note: SENA is 0 during SCLK and SDATA...
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3$06 7HFKQLFDO 'RFXPHQWDWLRQ 6FKHPDWLFV /D\RXWV 13: Circuit Diagram of RX Name Voltage Enable Supply N150 B2 N150 E1 N150 E3 CCONT D4 N150 H7 N150 E2 2.8 Vdc RXPWR2 N701 pins 5 and 16. N150 H5 C793 2.8 Vdc RXPWR3 N721 pins 5, 14 and 16.
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3$06 7HFKQLFDO 'RFXPHQWDWLRQ 6FKHPDWLFV /D\RXWV 13: Circuit Diagram of TX Directional Coupler has TXLX signals are low for power levels 2-7 15dB of coupling Z910 D202 C6 TXLX1 R934 RX800 loss and <1dB of insertion loss D202 C5 TXLX2 2x470R C939...
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