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NHM-3 Trouble Shooting PAMS Technical Documentation 7DEOH RI &RQWHQWV 3DJH 1R Trouble Shooting ....................1 Trouble Shooting......................4 Baseband ........................4 Phone is totally dead ....................5 Flash programming doesn’t work ................6 Power doesn’t stay on, or phone is jammed ...............9 Display Information: “Contact Service” ..............10 The phone doesn’t register to the network or phone doesn’t make a call ....
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NHM-3 PAMS Technical Documentation Trouble Shooting Wintesla Tuning........................40 Which RF to tune after repairs ...................40 RX Calibration ......................41 RX Filter Calibration (Automatic) ................44 RX AM Suppression (Automatic) ................46 TX Power tuning ......................50 EGSM........................50 PCN ......................... 52 TX I/Q Tuning ......................54 Initial set-up EGSM ....................
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NHM-3 Trouble Shooting PAMS Technical Documentation Flash programming (1) Flash programming doesn’t work If fault information from Prommer is: a) MCU doesn’t boot See section: (2) b) Serial dataline failure c) Serial clock line failure Connect J102 (WDDIS) to GND. J109 (VBB) = 2.8V See section: "Phone is dead"...
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NHM-3 PAMS Technical Documentation Trouble Shooting Flash programming (2) Flash programming doesn’t work Check for activity on External RAM control lines of SRAM: Faulty D310 SRAM fault J324 (RAMselX),... Faulty D301 MAD2 Algorithm file or Check type of Flash alias ID not found Check Vpp line: MCU Flash Vpp Flashing via X200...
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NHM-3 Trouble Shooting PAMS Technical Documentation SIM card rejected fault (2) "SIM card rejected" VSIM according to spec.: Faulty N102 CCONT, 2,8V min. (3V SIM card) or faulty PCB 4,5V min. (5V SIM card) ATR data can be Check X160, R160 seen at C162 ATR data can be Check N102 CCONT...
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NHM-3 PAMS Technical Documentation Trouble Shooting Audio faults Earpiece doesn’t work Microphone doesn’t work and there isn’t any and there isn’t any mechanical problem mechanical problem Check R247, C248, Check R206, R233, C233 towards SRAM (bias) = 2.1V C249,C246,C247 V231, C234, C236 Check MIC line to Cobba: L204, C230, C231, C232, C233, C237, C238, R228, R206...
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NHM-3 Trouble Shooting PAMS Technical Documentation &KDUJHU IDLOXUH No t h in g h ap p en s w h en c h ar g er is c o n n ec ted R103 t o w ar d s C101 (VCHA R, N102) > 0.4 V Ch ec k w h en c h ar g er is c o n n ec ted X100, F101, L 101...
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NHM-3 PAMS Technical Documentation Trouble Shooting 3&1 6LJQDO 3DWK For easy error tracing it is important to know the signal path of the PCN receiver. The components can be grouped into blocks and drawn as shown below. VRF_RX VREF Hagar 6.3.1.
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NHM-3 PAMS Technical Documentation Trouble Shooting &OLFN 2. LQ WKH :LQWHVOD ZLQGRZ QRZ D QHZ ZLQGRZ SRSV XS Click Save in the Wintesla window, now a new window pops up: Change the level and frequency on the generator as the window tells you Click OK in the Wintesla window, now a new window pops up: 2ULJLQDO 1RNLD 0RELOH 3KRQHV /WG...
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NHM-3 Trouble Shooting PAMS Technical Documentation Change the level and frequency on the generator as the window tells you. Click OK in the Wintesla window, now a new window pops up: 71.53 81.53 91.53 100.61 Click Save in the Wintesla window, RX Calibration is now completed. 3DJH 1RNLD 0RELOH 3KRQHV /WG 2ULJLQDO ...
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NHM-3 PAMS Technical Documentation Trouble Shooting 5; )LOWHU &DOLEUDWLRQ $XWRPDWLF This calibration is calibrating the Baseband filter inside Hagar, for this reason the calibration is not done in both bands. $FWLRQ .H\VWURNH 6HOHFW 7XQLQJ $OWW RX Measurements A window now pops up: ,Q WKH 6HOHFW )XQFWLRQ IUDPH VHOHFW 5;...
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NHM-3 PAMS Technical Documentation Trouble Shooting 7; 3RZHU WXQLQJ This tuning must be done in both bands. Note: TX Power tuning must be done with a peak power meter, e.g. Rohde & Schwarz model NRVD with a Rohde & Schwarz Peak Power Sensor TDMA Model NRV-Z31 and a suitable attenuator. The use of power meter in GSM testers is likely to cause larger error than the use of a dedicated power meter and might cause the phone to be non-compliant with GSM specifications.
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NHM-3 Trouble Shooting PAMS Technical Documentation $FWLRQ .H\VWURNHV Set Active unit to TX Set TX Data Type: to Rand Click Apply Click Close Select: Tuning Alt+t TX Power… Alt+P A window now pops up: 7XQH OHYHO DQG %DVH LQ DFFRUGDQFH ZLWK WKH WDUJHW YDOXHV &OLFN FDOFXODWH &KHFN LI WKH RWKHU OHYHOV PDWFK WKH WDUJHWV FRUUHFW LI QHFHVVDU\ &OLFN 6DYH ZKHQ DOO YDOXHV PDWFKHV WKH WDUJHWV...