CC Technical Documentation NPM-10 (3595) Series Transceivers Troubleshooting - BB Issue 2 03/2004 Confidential ©2004 Nokia Corporation
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation Contents Page Baseband Testpoints ...................................................................................................... 3 Fault-Finding Charts ....................................................................................................3 Phone is Dead ..............................................................................................................4 Flash Programming Does Not Work ..........................
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation Baseband Testpoints J420 FLSCSX J425 RFCLK J413 J405 J415 J411 J409 C231 DBUSCL UEMINT DBUSEN FBUSTX MBUXTX VREFRF0 C222 VR4 C225 VR6 J417 EXTRDX J418 RLS2CSX J414 DBUSDA C226 VR5 J413 DBUSCL J402 PURX C223 VR2 J413 DBUSCL J404 SLEEPCLK C227 VR3 J408 CBUSEN C224 VR7 J406 CBUSCLK J420 J425 J417 J418 J407 CBUSDA J414 J402 J404 J408 J406 J407 J412 J412 FBUSRX GND C208 VCORE C206 VANA J413 J405 J415 J403 J411 C205
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation Phone is Dead This means that the phone does not draw any current at all when a supply is connected and/or the power key is pressed. It is assumed that the voltage supplied is 3.6 VDC. The UEM prevents any functionality whatsoever at battery/supply levels below 2.9 VDC.
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation Phone is dead Yes X101 CHECK: No VBAT - 3.6 VDC X101 Yes Z261, C261, Z264, C264 Voltage = 3.6 VDC No CHECK: Z261, C261, Z264, C264 Yes S300 Pin 1 & 3 is HIGH when power key is untouched CHECK: No R217, C310 Yes S300 Pin 1 & 3 is 0VDC(LOW) when power key is pressed CHECK: No S300, PWB Yes J404 CHECK: Sleep clock is 32.768 kHz, 1.8 Vpp No B200, C209, C210, PWB. Else defective D200* Yes J402 CHECK: PURX = 1.8VDC 1 sec.
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation Flash Programming Does Not Work The flash programming can only be done via the pads on the PWB (J100). In case of flash failure in FLALI station, the problem is most likely related to SMD problems. Possible failures could be short-circuit of balls under µBGAs (UEM, UPP, FLASH), or missing or misaligned components. In flash programming error cases, the flash prommer can give some information about a fault.
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation Power Does Not Stay on or Phone is Jammed If this kind of failure is presenting itself immediately after FLALI, it is most likely caused by ASICs missing contact with the PWB. If for some reason the MCU does not service the watchdog register within the UEM, the operations watchdog runs out after approximately 32 seconds. Unfortunately, the service routine cannot be measured. Power doesn’t stay on or phone is jammed J404 Sleep clock = 32.
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation Display Information: "Contact Service" This error can only happen at power up where several self-tests run. If any of these test cases fail, the display shows the "Contact Service" message. These are individual test cases, so the following list of possible errors has no chronological order. Use common sense and experience to decide where to begin error hunting.
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation Phone Does Not Register Onto the Network, or the Phone Cannot Make a Call If the phone does not register to the network, the fault can be in either BB or RF. Only a few signals can be tested because several signals are buried in one or more of the inner layers of the PWB. First, check that the SIM LOCK is not causing the error by using a Test-SIM card and connecting the phone to a tester.
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation SIM-related Faults Insert SIM Card Fault The hardware of the SIM interface from UEM (D200) to the SIM connector (X387) can be tested without a SIM card. When the phone power is switched on, first check for a 1.8 V SIM card and then a 3 V SIM card. The phone will try this four times, whereafter it will display ”Insert SIM card”. Display shows “Insert SIM Card” Yes X387 Verify that the phone checks for 1.8 V-SIM, and then 3 V-SIM during power-up.
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation SIM-Card Rejected The error ”SIM Card Rejected” means that the ATR message received from the SIM card is corrupted, e.g. the data signal levels are wrong. The first data is always ATR and it is sent from the card to the phone. Display shows “SIM Card Rejected” Yes X387 VSIM = min. 1.6 V (1.8 V Card) VSIM = min. 2.8 V (3 V Card) (See Figure 10) CHECK: No R386, PWB. Else defective D200* Yes X387 ATR data can be seen at SIM data pin.
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation Audio-related Faults Earpiece does not work Replace: Earpiece Error Still Present Z150, R161 Check Z150 and R161 are working correctly (no short/open circuit) CHECK: No R386, PWB.
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation Microphone does not work and there is no mechanical problem C103, Z100 Check C103 and Z100 are working correctly (no short/open circuit) No Replace: C103 and/or Z100 Yes Replace: System Connector Error Still Present R165 Check voltage level on R165 towards UEM (bias) =2.1 V CHECK: No R165, C168, PWB. Else Defective D200* No R153, R157, C151, C152, C153, C154, PWB. Yes R153 Check voltage level on R153 towards mic lines (bias) = 1.
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation Headset microphone does not work and there is no mechanical problem R166 Check voltage level on R166 towards UEM (bias) = 2.1 V No Replace: C183 and/or Z102 Yes R151 Check voltage level on R151 towards UEM (bias) = 1.0 V - 1.
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation Charging Failure The phone is OFF, the battery is completely empty (<=3.1 VDC), and there is no current from the charger when connected. L100 VCHAR>2.1 VDC Check: No F100, L100, V101, C100, R200, system connector Yes Defective D200* Figure 15: Phone is OFF, the battery is empty, and there is no current from the charger The phone is ON or OFF, the battery has nominal voltage (<=3.
NPM-10 (3595) Troubleshooting - BB CC Technical Documentation Display shows “Not Charging” when charger is connected R206 Voltage on R206 towards D200 is ~0.8 VDC when power is connected (BSI must be 75K) No CHECK: X101, R202, R206, C240 Yes R207 Voltage (use scope) on R207 towards D200 is ~0.9 VDC at peak (BTEMP must be 47K) No CHECK: X101, R202, R207, C220 Yes R200 Voltage on R200 towards D200 same as VBAT voltage CHECK: No R200, PWB.
