.::TroubleShoting And how to SOLVING::.

[kontil]

Share here your problem,and i will help solved your problem step by step,by self research, based on Voltage,clock ETC

so we can have knew,how to solved a problem without jumper trick or solution picture, cause many CASE have different solution

SO:
-we can know how to make jumper/removing a component
-Why jumpered or removed
-what function of this jumper/removing a component

i'm newbie to,so need advice from senior member

[kontil]

Today i receive Nokia N70 from my customer With symptom no network.
No network on Dual mode or Gsm

Diagnose:
1. Do searching manual in GSM mode, long time needed then show NO NETWORK from this we know that the problem came from RX (Receiver).
2. Do Self test with CYCLONEBOX, here i show you the log:

Selftests to proceed: 34
Passed		ST_TAHVOINT_TEST
Passed		ST_UEM_CBUS_IF_TEST
Passed		ST_EAR_DATA_LOOP_TEST
Passed		ST_SIM_CLK_LOOP_TEST
Passed		ST_SIM_IO_CTRL_LOOP_TEST
Passed		ST_SLEEPCLK_FREQ_TEST
Passed		ST_SIM_LOCK_TEST
Passed		ST_SECURITY_TEST
Passed		ST_PWR_KEY_TEST
Passed		ST_CURRENT_CONS_TEST
Failed		        ST_CMT_APE_WAKEUP_TEST
Passed		ST_BACKUP_BATT_TEST
Passed		ST_RADIO_TEST
Passed		ST_HOOKINT_TEST
Passed		ST_VIBRA_TEST
Passed		ST_BTEMP_TEST
Passed		ST_CDSP_RF_BB_IF_TEST
Passed	        ST_CDSP_RF_SUPPLY_TEST
Passed		ST_CDSP_TX_IQ_TEST
Passed		ST_CDSP_TXC_DATA_TEST
Passed		ST_CDSP_WCDMA_TX_POWER_TEST
Failed		        ST_CDSP_RX_IQ_LOOP_BACK_TEST
Failed		        ST_CDSP_RX_PLL_PHASE_LOCK_TEST
Passed		ST_CDSP_TX_PLL_PHASE_LOCK_TEST
Passed		ST_CDSP_PWR_DETECTOR_BIAS_TEST
Failed		        ST_CDSP_GSM_TX_POWER_TEST
Passed		ST_KEYBOARD_STUCK_TEST
Passed		ST_LPRF_IF_TEST
Passed		ST_CAMERA_IF_TEST
Passed		ST_SEC_CAMERA_IF_TEST
Passed		ST_LPRF_AUDIO_LINES_TEST
Passed		ST_MAIN_LCD_IF_TEST
Passed		ST_BT_WAKEUP_TEST
Passed		ST_BT_SLEEP_CLK_TEST
Selftests done, Tests total: 34, Tests passed: 30, Tests not passed: 4

3. From the selftest LOG we can see the failed test,and the problem is in network not in baseband so we ignore this test

Failed ST_CMT_APE_WAKEUP_TEST

this is bug or what??, i don't know, Hope in new UPDATE of cyclonebox,MR.KARWOS will fix this,Or making selftest can be do or can be test separately,make easy to us

Cause after vibra test all of residual test will failed (many BB5)

4. Continue... As we can see the main problem is here in red font

ST_CDSP_RX_PLL_PHASE_LOCK_TEST

and the induced is here

Failed ST_CDSP_RX_IQ_LOOP_BACK_TEST

FINDING THE FAULT COMPONENT:

1. ST_CDSP_RX_PLL_PHASE_LOCK_TEST = Phase looping lock test for RECEIVER (RX PART)
in this case is RX lets see on scematic which component and place of this.,in this case we have N70,this type of handset have 2 RF ic thats call VINKU (TX IC) and HINKU (RX IC).
In this case i have RX PROBLEM so the suspect is (HINKU IC)

(now we MUST LOOK!!! at the induced problem,before DO SOMETHING!!!
cause we need think twice before do REHOT,REBALL or change the IC. a lot of risk and only 50% sucess)

2. the induced problem is ST_CDSP_RX_IQ_LOOP_BACK_TEST = looping back data, this will failed because of this part is after PLL

3. lets see on scematic which component and place of this.

4. Look at handset where is it C7524???,lets change this

RESULT

1. selftest LOG

Selftests to proceed: 34
Passed		ST_TAHVOINT_TEST
Passed		ST_UEM_CBUS_IF_TEST
Passed		ST_EAR_DATA_LOOP_TEST
Passed		ST_SIM_CLK_LOOP_TEST
Passed		ST_SIM_IO_CTRL_LOOP_TEST
Passed		ST_SLEEPCLK_FREQ_TEST
Passed		ST_SIM_LOCK_TEST
Passed		ST_SECURITY_TEST
Passed		ST_PWR_KEY_TEST
Passed		ST_CURRENT_CONS_TEST
Failed		ST_CMT_APE_WAKEUP_TEST
Passed		ST_BACKUP_BATT_TEST
Passed		ST_RADIO_TEST
Passed		ST_HOOKINT_TEST
Passed		ST_VIBRA_TEST
Passed		ST_BTEMP_TEST
Passed		ST_CDSP_RF_BB_IF_TEST
Passed		ST_CDSP_RF_SUPPLY_TEST
Passed		ST_CDSP_TX_IQ_TEST
Passed		ST_CDSP_TXC_DATA_TEST
Passed		ST_CDSP_WCDMA_TX_POWER_TEST
Passed		ST_CDSP_RX_IQ_LOOP_BACK_TEST
Passed		ST_CDSP_RX_PLL_PHASE_LOCK_TEST
Passed		ST_CDSP_TX_PLL_PHASE_LOCK_TEST
Passed		ST_CDSP_PWR_DETECTOR_BIAS_TEST
Failed		ST_CDSP_GSM_TX_POWER_TEST
Passed		ST_KEYBOARD_STUCK_TEST
Passed		ST_LPRF_IF_TEST
Passed		ST_CAMERA_IF_TEST
Passed		ST_SEC_CAMERA_IF_TEST
Passed		ST_LPRF_AUDIO_LINES_TEST
Passed		ST_MAIN_LCD_IF_TEST
Passed		ST_BT_WAKEUP_TEST
Passed		ST_BT_SLEEP_CLK_TEST
Selftests done, Tests total: 34, Tests passed: 32, Tests not passed: 2

2. On Handset

PROBLEM SOLVED WITH CYCLONEBOX.... THX for the team

sorry if something is missing, because I'm also still learning
Just press THANKS if it helps
BR