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GSM/DCS ZAP - Level 3 Procedure
START
NO
Does the Radio POWER UP and STAY ON ? GO TO " NO POWER UP " on page 4 .
ZAP
TEST SEQUENCE
YES
NO
Does DISPLAY works Ok ? GO TO "NO DISPLAY" on page 19.
YES
YES
Does Display shown "PHONE FAILURE SEE SUPPLIER" ?
GO TO Display shown "PHONE FAILURE SEE SUPPLIER" on page 21 .
NO
YES
Does Display shown "CHECK CARD" ? GO TO "CHECK CARD" on page 23 .
NO
Does the phone go into Service at 102 dbm ?
NO
GO TO " NO RX " on page 7 .
YES
Does the phone initiate a CALL using a GSM traffic channel ?
NO
GO TO " NO TX (GSM mode) " on page 10 .
YES
A
to page 2
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 1
GSM/DCS ZAP - Level 3 Procedure
A
ZAP
TEST SEQUENCE
Does the phone initiate a CALL using a DCS traffic channel ?
NO
GO TO " NO TX (DCS mode) " on page 13 .
YES
CALL the phone from Analyzer .
NO
Is Ringer tone audible ? GO TO " NO/LOW RINGER " on page 20 .
YES
ANSWER CALL .
Is Phase Frequency within Spec. ?
NO
GO TO " PHASE ERROR " on page 19 .
YES
Is the Frequency error within specification ?
NO
GO TO " FREQUENCY ERROR " on page 21 .
YES
B
to page 3
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 2
GSM/DCS ZAP - Level 3 Procedure
B
ZAP
Is the Power Burst within Spec. ?
NO
TEST SEQUENCE
GO TO " POWER BURST ERROR " on page 21 .
YES
NO
Is the TX Audio OK ( MIC ) ? GO TO " NO MIC " on page 21 .
YES
NO
Is the RX Audio OK ? ( Loudspeaker ) GO TO " NO/LOW AUDIO " on page 20 .
YES
TERMINATE THE CALL .
Recording a Message using VOICE ANNOTATION .
Listening the Message . Is it OK ?
NO
GO TO " NO VOICE ANNOTATION " on page 22 .
YES
END
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 3
GSM/DCS ZAP - Level 3 Procedure
START
Download in to Emmibox the correct software for Zap. Connect the phone with EMMIBOX cable and verify if the Zap Loading the software from EMMIBOX. The phone PWR UP correctly . END
NO POWER UP
The phone still NO PWR UP
Is present the B+ voltage on C910 (about 4.8V) ?
NO
If you use the Battery, check Q906 and Battery conn.(NOTE 1) ; if you use the External power check CR903 and J600. (NOTE 1)
YES
Make a SHORT C. between TP1(L2.75) and TP18(WATCHDOG)
Is the VSWITCH present and without ripple on C916(about 5.6V) ?
NO
Check U900,L902,CR910 (NOTE 1 and for faulty) if OK replace U900 .
YES
Are there the L2.75,R2.75,L500 and R4.75 present on C902,C908,C901 and C906 ?
NO
Check U900 (NOTE 1) if OK replace U900 .
YES
NO
Is 13 Mhz present on pin 37 of U703 ? Is present the 13Mhz on pin 17 of BIC ?
NO
Check U220,Y702,CR221 and 13 Mhz components (NOTE 1 and for faulty) if OK Replace U220 .
YES YES
Check U703 (NOTE 1) and its Bias , if OK replace it.
A
to page 5
NOTE 1 : CHECK THE COMPONENT/S FOR PHYSICALLY DAMAGE DRY JOINT AND GOOD POSITION . Page 4
- MOTOROLA CONFIDENTIAL PROPRIETARY -
GSM/DCS ZAP - Level 3 Procedure
A
from page 4
NO POWER UP
Does the RESET line on pin 30 of U900 go high ?
NO
Probably U701 Faulty .
YES
Check on test point TP 71 the presence of CE to the FLASH E.
NOT OK
Probably U701 Faulty . (MICROP.)
OK NOT OK
Probably U704 Faulty . (FLASH E.)
Check on test point TP 72 and TP73 the presence of CE to the SRAM.
OK
Check on test point TP 75 the presence of CE to the EEPROM.
NOT OK
Probably U702 Faulty . (SRAM).
OK
Remove C.C. between L2.75 and Watchdog.
NOT OK
Is the RESET Timing on page 6 correct ? Probably U704 Faulty . (FLASH E.)
OK
Check the presence of 13Mhz on pin 40 of Firestorm ; If Ok check U500 (NOTE1) Then replace it.
NOTE 1 : CHECK THE COMPONENT/S FOR PHYSICALLY DAMAGE DRY JOINT AND GOOD POSITION . - MOTOROLA CONFIDENTIAL PROPRIETARY Page 5
to page 2
GSM/DCS ZAP - Level 3 Procedure
RESET SEQUENCE AT POWER ON The power up RESET sequence is described in the following diagram. Following the activation of the +2.75V Regulator, the GCAP LITE IC and the 68338 begin a seven state power sequence involving the *RESET line and the GCAP Lite' Watchdog input. The figure below depicts the sequence of the states. The figure is not drawn to scale. s
State 1 When the GCAP LITE IC detects a power on request (ON/OFF Line "LOW"), the GCAP LITE will drive the system *RESET line low. The 68338 Clock line will take approximately 100mS to stabilize after power is applied. State 2 The 68338, SMoC, and BIC in the radio are connected to the *RESET line. The nominal time *RESET is held low by the GCAP LITE is 250 milliseconds +/- 50 ms. State 3 When the GCAP LITE releases *RESET, it is pulled high by an internal resistor. There isa period of approximately 500 nanoseconds when neither the GCAP LITE or 68338 is asserting *RESET. State 4 When the 68338 reset control logic detects that the system *RESET line is no longer being driven, it drives it low for an additional 512 cycles (39.6 microseconds). This assertion of *RESET by the 68338 is a feature of the IC and cannot be modified. State 5 When the 68338 releases *RESET, it is pulled high by the internal resistor. The 68338 be-gins executing its Boot Code. If valid code is present, the RESET vector in the radio code is then executed. The Boot Code runs for about 512 cycles (39.6usec) before this new vector is executed. State 6 The 68338 holds *RESET low for 50usec during this state (an internally generated RE-SET). State 7 When the 68338 releases *RESET, it is again pulled high by the internal resistor. All the processors in the system, including the 68338, then begin execution. During this state, the 68338 must drive the GCAP Lite' Watchdog line s
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 6
GSM/DCS ZAP - Level 3 Procedure
START
NO RX
Is a Rx problem only using GSM Band ?
YES
A
to page 8
NO
Is a Rx problem only using DCS Band ?
YES
B
to page 8
NO
Connect on J600 a RF Signal of -30dbm at Frequency of 947.4 Mhz. Put the phone in TEST mode and digit 45062# Is present at output of U401 pin 5 the RX signal (abaut -35 dbm) ?
NO
Check for dry joint or faulty U401,U403 and also their relative controls .
YES
Is there about 1Volt and is present the 430 Mhz on TP14 (test piont) ? .
NO
E
to page 9
YES NO
Check the presence of B+ on Q221 and the VREF on pin 16 of U220 (from Gcap) ; if OK replace Q221.If VREF isn't OK , verify the Gcap for dry joint or fault .
Is present , stable and correct the Rx2.75 on Q221
YES
Is present and correct the 215 Mhz on base of Q460 ?
NO
Check the components from RX Filter (FL461) to Q460.
YES NO
Check RX_EN signal on Base of Q460 (from microp.) If OK replace Q460 else sent to HTC
Is there the 215 Mhz on input of FL480 with the correct level ?
YES
Is the signal at base of Q480 correct ?
NO
Replace FL480
YES
Check the signal at output of Q480 : If it is OK you have an intermittent problem If not OK look SW_VCC signal on C482 (from pin 33 of U220) ; then replace the transistor.
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 7
GSM/DCS ZAP - Level 3 Procedure
A
from page 7
NO RX
Connect on J600 a RF signal (RX) of -30dbm at Frequency 947.4 Mhz ; put the Phone in Test Mode and digit 45062# .
GO TO "NO MAIN VCO" gsm mode
NO
Is there the RX signal (947.4 Mhz) at FL461 (from C412) correct and clear ?
YES
Is there the Main VCO signal (732.4 Mhz) on input1 of FL461.
YES
Replace FL461
NO YES
Is there on base of Q410 the RX signal ? Check the Bias on collector of Q410 (RX2.75) and the MUTE signal from Q411 ; if they are correct, replace Q410, if they aren't correct check Q411 and Q412 for faulty.
NO YES
Replace FL400
Is there the RX signal on input of FL400 and is correct ?
B
from page 7
NO
GO TO "NO MAIN VCO" dcs mode Check for dry joint or faulty U401,U403 and J600.
Connect on J600 a RF signal (RX) of -50dbm at Frequency of 1842.8Mhz, put the Phone in Test and digit 45700# .
NO YES
Replace FL462 Is there the Main VCO signal (1627.8Mhz) on input2 of FL462.
YES
Is there the RX signal (1842.8 Mhz) at FL462 (from C432) correct and clear ?
NO
Check the Bias on collector of Q430 (RX2.75) and the MUTE signal from Q431 ; if they are correct, replace Q430, if they aren't correct check Q431 and Q412 for faulty.
YES
Is there on base of Q430 the RX signal ?
NO
YES
Replace FL401
Is there the RX signal on input of FL401 and is it correct ?
NO
Check for dry joint or faulty U401,U403 and J600.
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 8
GSM/DCS ZAP - Level 3 Procedure
C
from page 7
NO RX
Are RXI and RXQ Signals present and correct on pin 46 and 48 of U220 ?
NO
D
YES
Set RF Generation to -100dbm Level and digit on Zap 25000# then verify the correct presence of RXQ and RXI on pin 46 and 47 of U220 .
NOT OK
Check L221,C230,U220 for Faulty .
OK
Turn on the Phone NOT in Test Mode and Check data signals on pin 9,10 and 11(from microp.) of U500 . Check U500 for dry joint then the following Bias: pin 5 = L2.75 from U900 pin 35 mdm_ana_vcc from Q222; if they are ok Replace U500 (Smoc)
NOT OK
OK
Rephase the Zap and if the problem persist Replace U500 (Smoc ).
D
Is the IQREF signal present on pin 47 of U220 ? (about 1.3V c.c.)
NO
YES
NOT OK
Check U220 for dry joint problem then if OK turn the Phone NOT in Test Mode and check data on pin 52,53 of U220. (signal from U500) Check the following Bias on U220: pin 35,34,49 = RX_2.75 from Q221 pin 11 = R4.75 from U900 . If they are OK replace U220 .
Check RX L.O. on pin 41 of U220 ( signal at 430 Mhz)
OK
OK
NOT OK
E
Phone NOT in Test Mode and check data on pin 52,53 of U220. (signal from U500) Check U220 and RX_LOCAL OSC components for dry joint ; if OK check CR220,L220 and U220 for Fault .
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 9
GSM/DCS ZAP - Level 3 Procedure
NO TX
GSM MODE
- Connect on J600 a RF Spectrum analizer. - Put the Phone in TEST Mode and digit 110062#,1215#,40#.
- Remove U301 and Check witx tx ON the correct PA Bias :
START
Is TX POWER DOWN Problem ?
- Pin 2,3,4 = about B+(modulated by DM_CS) ; if NOT OK check on Pin 4 of Q301 the presence of DM_CS signal (from Q300) then Replace Q301.
YES
- Pin 10 = about B+(modulated by DM_CS) ; If NOT OK check L310,L309 . - Pin 13,14,15 = Negative Bias (from -3V to -1V) If NOT OK Check Q305,Q306 circuit (for dry joint or fault) and EXC Signal from U340 Pin 7, If NOT OK go to H (page 11) . - IF ALL OK Replace U301 .
NO
Is there TX Frequency but the Level is LOW ?
NO
G
to page 12
YES
Without remove U301 Check the following signals
NO
Do you have the Correct Level and Frequency of TX Signal (902.4 Mhz) on Pin 8 of U301 ?
to page 11
YES
Is present at Pin 2,3,4 of U301 the correct level of Tx signal ? from page 12
YES
E L
NO
Do you have the correct level and Freq. of Tx signal on Base of Q330 ?
NO
Is Correct the level on Base of Q331 ?
Verify TX VCO components for dry joint and the following signals :
NO
Bias R2.75 on Collector of Q351 and Q350 , the control signals on Base of Q351 and Q350 . (by LOGIC_GSM_*DCS,DM_CS, LOGIC_*GSM_DCS) Check L367,VR354,VR353 and Q351,Q350 for faulty .
YES
YES
- Check the presence of B+ on Collector of Q330. - Check the EXC Signal from PAC IC (U340) at Base of Q330. - If NOT OK go to H (page 11) . - If ALL OK replace Q330.
YES
Do you have at Collector of Q331 the DM_CS signal ? replace Q331
NO
Check the path from Q520/pin2 SMOC and the relative components (as L351,L332)
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 10
GSM/DCS ZAP - Level 3 Procedure
E
from page 10
NO TX
GSM MODE
Is present at input of FL301 the correct level of TX signal ?
NO
Check the path and Filters circuit (CR301,302,304 and relative components) If OK check the TX_GSM signal from Q304 pin 4 and relative controls (LOGIC_GSM_DCS,TX_EN,FLTR_-10 V).
YES
Is correct the level at output of FL301 ?
NO
Replace FL301
YES
Check for dry joint or faulty U401,U403 and also check their relative controls (TX_EN,RX_EN,RX_2.75,-10 V).
H
from page 10
PIN 14 = DET_SW from SMOC PIN 14
If NOT OK go to NOTE 1
PIN 14 , 4 = TX_EN from Q501 (as Bias)
PIN 12 = SAT_DET ( saturation signal )
to SMOC. If NOT OK go to NOTE 1
U340 PAC IC
PIN 8 , 9 = AOC from PIN 39 of SMOC
(PWR_CNTRL) If NOT OK go to NOTE 1
PIN 8 = EXC signal to
LEVEL SHIFT Circuit (Q305 and Q306)
PIN 10 = TX_KEY from SMOC PIN 16
If NOT OK go to NOTE 1
PIN 2 = RF_IN (RF TX signal Feed back)
NOTE 1 : CHECK SMOC (U500) FOR DRY JOINT
THEN VERIFY ITS CORRECT BIAS , IF OK REPLACE IT .
from FL301.
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 11
GSM/DCS ZAP - Level 3 Procedure
G
from page 10
NO TX
GSM MODE YES
Are there on TP13 about 1.2V and the 340 Mhz ?
NO
Is there on Pin 4 of U370 the 170 Mhz from Pin 4 of U220 ?
NO
Is there the 340 Mhz on Pin 6,7 of U220 ?
YES
Check U220 for dry joint then replace it .
YES
NO
Check TX Local Oscillator for dry joint then control CR261,CR223 and L261 for faulty .
PIN 14 = TX_VCO FEEDBACK (Freq.on CH 62 902.4 Mhz)
If NOT OK go to TX VCO problem
L (page 10) .
U370 TIC IC
PIN 2 , 12 = R2.75 from Pin 28 of U900(GCAP)
PIN 7 = DM_CS from Q520/PIN 2 of SMOC
PIN 1 = MAIN VCO FREQ.(Freq.732.4 Mhz using CH 62)
If NOT OK check path from R245 to TIC .
If ALL OK Check for intermittent problem then sent to HTC.
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 12
GSM/DCS ZAP - Level 3 Procedure
NO TX
DCS MODE
- Connect on J600 a RF Spectrum analizer. - Put the Phone in TEST Mode and digit 110700#,1215#,40#.
- Remove U301 and Check witx tx ON the correct PA Bias :
START
Is TX POWER DOWN Problem ?
- Pin 2,3,4 = about B+(modulated by DM_CS) ; if NOT OK check on Pin 4 of Q301 the presence of DM_CS signal (from Q300) then Replace Q301.
YES
- Pin 10 = about B+(modulated by DM_CS) ; If NOT OK check L310,L309 . - Pin 13,14,15 = Negative Bias (from -3V to -1V) If NOT OK Check Q305,Q306 circuit (for dry joint or fault) and EXC Signal from U340 Pin 7, If NOT OK go to H (page 14) . - IF ALL OK Replace U301 .
NO
Is there TX Frequency but the Level is LOW ?
NO
G
to page 15
YES
Without remove U301 Check the following signals
NO
Do you have the Correct Level and Frequency of TX Signal (1747.8 Mhz) on Pin 8 of U301 ?
to page 14
YES
Is present at Pin 2,3,4 of U301 the correct level of Tx signal ? from page 15
YES
E L
NO
Do you have the correct level and Freq. of Tx signal on Base of Q330 ?
NO
Is Correct the level on Base of Q331 ?
Verify TX VCO components for dry joint and the following signals :
NO
Bias R2.75 on Collector of Q351 and Q350 , the control signals on Base of Q351 and Q350 . (by LOGIC_GSM_*DCS,DM_CS, LOGIC_*GSM_DCS) Check L367,VR354,VR353 and Q351,Q350 for faulty .
YES
YES
- Check the presence of B+ on Collector of Q330. - Check the EXC Signal from PAC IC (U340) at Base of Q330. - If NOT OK go to H (page 14) . - If ALL OK replace Q330.
YES
Do you have at Collector of Q331 the DM_CS signal ? replace Q331
NO
Check the path from Q520/pin2 SMOC and the relative components (as L351,L332)
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 13
GSM/DCS ZAP - Level 3 Procedure
E
from page 13
NO TX
DCS MODE
Is present at input of FL301 the correct level of TX signal ?
NO
Check the path and Filters circuit (CR301,302,304 and relative components) If OK check the TX_GSM signal from Q304 pin 4 and relative controls (LOGIC_GSM_DCS,TX_EN,FLTR_-10 V).
YES
Is correct the level at output of FL301 ?
NO
Replace FL301
YES
Check for dry joint or faulty U401,U403 and also check their relative controls (TX_EN,RX_EN,RX_2.75,-10 V).
H
from page 13
PIN 14 = DET_SW from SMOC PIN 14
If NOT OK go to NOTE 1
PIN 14 , 4 = TX_EN from Q501 (as Bias)
PIN 12 = SAT_DET ( saturation signal )
to SMOC. If NOT OK go to NOTE 1
U340 PAC IC
PIN 8 , 9 = AOC from PIN 39 of SMOC
(PWR_CNTRL) If NOT OK go to NOTE 1
PIN 8 = EXC signal to
LEVEL SHIFT Circuit (Q305 and Q306)
PIN 10 = TX_KEY from SMOC PIN 16
If NOT OK go to NOTE 1
NOTE 1 : CHECK SMOC (U500) FOR DRY JOINT
THEN VERIFY ITS CORRECT BIAS , IF OK REPLACE IT .
PIN 2 = RF_IN (RF TX signal Feed back)
from FL301.
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 14
GSM/DCS ZAP - Level 3 Procedure
G
from page 13
NO TX
DCS MODE YES
Are there on TP13 about 1.5V and the 240 Mhz ?
NO
Is there on Pin 4 of U370 the 120 Mhz from Pin 4 of U220 ?
NO
Is there the 240 Mhz on Pin 6,7 of U220 ?
YES
Check U220 for dry joint then replace it .
YES
NO
Check TX Local Oscillator for dry joint then control CR261,CR223 and L261 for faulty .
PIN 14 = TX_VCO FEEDBACK (Freq.on CH 700 1747.8 Mhz)
If NOT OK go to TX VCO problem
L (page 13) .
U370 TIC IC
PIN 2 , 12 = R2.75 from Pin 28 of U900(GCAP)
PIN 7 = DM_CS from Q520/PIN 2 of SMOC
PIN 1 = MAIN VCO FREQ.(Freq.1627.8 Mhz using CH 700)
If NOT OK check path from R250 to TIC .
If ALL OK Check for intermittent problem then sent to HTC.
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 15
GSM/DCS ZAP - Level 3 Procedure
Put the Phone in TEST Mode and Digit 45062#
START
Is present on Pin 26 of U220 the 732.4 Mhz ?
YES
It is probable you have an intermittent problem, Check U220 and Main VCO components for dry joint .
NO MAIN VCO
GSM MODE
NO
Check U220 for dry joint and Is present on Q221 the RX 2.75 ?
NO
Check the presence of B+ on Q221 then replace it. If still NOT OK replace U220.
YES
Is present on Q222 the MDM_ANA_VCC ?
NO
Check the presence of B+ onQ222 then replace it. If still NOT OK replace U220.
YES
Is present on pin 21 of U220 the SF_OUT ?
NO
Is present on Pin 22 of U220 the R4.75 ?
NO
Check R233 and R4.75 (from Pin 41 of U900)
YES
YES
Replace U220
Turn ON the Phone NOT in Test Mode and check data on Pin 9,10 and 11 of U500
DATA AREN'T OK
Check U500 for dry joint then the following Bias : L2.75 on Pin 5 and MDM_ANA_VCC on Pin 35 (from Q222) . If they are OK replace U500 .
DATA ARE OK
Is correct the voltage on Collector of Q206 (from Q205) ?
YES
Check the Voltage on Pin 23 of U220 : If it is LOW check C247,C248,CR202 and CR203 for faulty If it is HIGH check Main VCO components for dry joint and CR202,CR203,Q202,Q201 for faulty .
NO
Q
= GSM/DCS MATRIX. page 18
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 16
GSM/DCS ZAP - Level 3 Procedure
Put the Phone in TEST Mode and Digit 45700#
START
Is present on Pin 26 of U220 the 1627.8 Mhz ?
YES
It is probable you have an intermittent problem, Check U220 and Main VCO components for dry joint .
NO MAIN VCO
DCS MODE
NO
Check U220 for dry joint and Is present on Q221 the RX 2.75 ?
NO
Check the presence of B+ on Q221 then replace it. If still NOT OK replace U220.
YES
Is present on Q222 the MDM_ANA_VCC ?
NO
Check the presence of B+ onQ222 then replace it. If still NOT OK replace U220.
YES
Is present on pin 21 of U220 the SF_OUT ?
NO
Is present on Pin 22 of U220 the R4.75 ?
NO
Check R233 and R4.75 (from Pin 41 of U900)
YES
YES
Replace U220
Turn ON the Phone NOT in Test Mode and check data on Pin 9,10 and 11 of U500
DATA AREN'T OK
Check U500 for dry joint then the following Bias : L2.75 on Pin 5 and MDM_ANA_VCC on Pin 35 (from Q222) . If they are OK replace U500 .
DATA ARE OK
Is correct the voltage on Collector of Q206 (from Q205) ?
YES
Check the Voltage on Pin 23 of U220 : If it is LOW check C247,C248,CR202 and CR203 for faulty If it is HIGH check Main VCO components for dry joint and CR202,CR203,Q202,Q201 for faulty .
NO
Q
= GSM/DCS MATRIX. page 18
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 17
GSM/DCS ZAP - Level 3 Procedure
NOTE : - WHEN YOU HAVE A SIGNAL WITH THE SYMBOL STAR ( * ) ES. GSM_*DCS ,
from page 16/17
Q
IT MEANING THAT IF YOU SELECT THE BAND WERE THERE IS THAT SYMBOL , THE LEVEL WILL BE LOW ; SO IF YOU SELECT THE OTHER BAND THE LEVEL WILL BE HIGH . ( ES. GSM_*DCS SIGNAL IS LOW IF YOU SELECT A DCS CH AND HIGH WITH A GSM CH ) .
Is there the FLTR_-10 V level on R118 ?
NOT OK
Check R118 and the path to U101 Pin 4
GSM_DCS MATRIX
ALL MODE
OK
Check the LOGIC_GSM_*DCS signal on Base of Q105 (from microp.)
NOT OK
sent to HTC
OK
Check the SW_VCC signal from U220 on Collector of Q105 and Pin 3 of Q100 .
NOT OK
Check for dry joint on U220 , if OK replace it .
OK
Is it correct the *GSM_DCS signal on collector of Q105 ?
NO
Replace Q105
YES
Is correct the signal GSM_*DCS on Pin 2 of Q100 and LOGIC_*GSM_DCS on Pin 1 ?
YES
The Problem could be elsewere .
NO
Replace Q100
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Page 18
GSM/DCS ZAP - Level 3 Procedure
START
NO DISPLAY NO KEYPAD
END NO
Replace pcb Display/Keyboard Is still no display ?
YES
Check REED_SWITCH and MYLAR if OK replace pcb display.
START
YES
Replace pcb Display/Keyboard Is KEYPAD works fine?
Check on ZAP the correct matching between the Software and the PCB Display and Reflex the Phone . Is still NO Display ?
NO END
NO
YES
NO
Is there on pin 4 of U101 the -10 V ?
Check U101 (NOTE 1) Check on pin 6 the L500 from pin 3 of U900 . If OK check J500 (NOTE 1).
Check J500 and the KEYPAD LINE components (NOTE 1) R770 to R778 and CR702/3/4/5. If OK probable U701 fault.
YES
Check J500 (NOTE 1) If ok probable U701 fault.
Phase Error OUT of Spec.
START
NO
Check U500 (NOTE 1) If OK replace it. Are the TXI and TXQ signal on pin 61,62,63,64 of U220 correct ?
YES
Check U220 (NOTE 1) If OK replace it.
NOTE 1 : CHECK THE COMPONENT/S FOR PHYSICALLY DAMAGE DRY JOINT AND GOOD POSITION . - MOTOROLA CONFIDENTIAL PROPRIETARY Page 19
GSM/DCS ZAP - Level 3 Procedure
START
With PCB in Test mode digit : - 481000# generate tone 1Khz - 4707# Volume level - For Ringer digit 432# - For Audio digit 434#
NO/LOW AUDIO or RINGER
NO
Is present at pin 49 of U500 the 1Khz ? END Check U500 (NOTE 1) If OK replace it .
YES NO YES
Replace Ringer. Is still NO/LOW RINGER ? Is a ringer problem ?
NO
Replace LOUDSPEAKER. Is still NO/LOW AUDIO ?
NO
END
YES
YES
NO
Is present at pin 6 of U900 1Khz ? Check the components from U500 to U900 (NOTE 1) .
NO
Is present at pin 21 of U900 1Khz ?
YES
YES
Is present the 1 Khz on pin 5 of U900 ? If OK Check components from Gcap to Ringer (NOTE 1). If NOT OK Check U900 (NOTE 1) then Replace it .
Is present the 1 Khz on pin 19 of U900 ? If OK Check components from Gcap to Loudspeaker (NOTE 1). If NOT OK Check U900 (NOTE 1) then Replace it .
NOTE 1 : CHECK THE COMPONENT/S FOR PHYSICALLY DAMAGE DRY JOINT AND GOOD POSITION . - MOTOROLA CONFIDENTIAL PROPRIETARY Page 20
GSM/DCS ZAP - Level 3 Procedure
START
With PCB in Test mode digit : - 434# Audio Signal to Loudspeaker - 4707# Audio Volume - 36# Loop Back mode
NO MIC
Is present the Mic signal at pin 10 of U900 ?
NO
Check U900 and the components between Mic and U900 (NOTE 1) If OK replace U900 .
YES
If the Mic signal is present at pin 45 of U500 Check Smoc (NOTE 1) then replace it . If NOT present Check C816,R812 and track for faulty .
FREQUENCY OUT OF SPEC.
Replace Y702 then if still NOT OK replace CR221 .
TX POWER BURST OUT OF SPEC.
PHONE FAILED SEE SUPPLIER
Set the GATE 22 Station to the correct parametres (Voltage,Cable loss,ecc) and rephase the phone; then Check PA (U301),PAC IC (U390), SMOC (U500) NOTE 1 and Compare the control signals with a good pcb.
Put in TEST mode the phone and Digit 7100# . Read the Return code :
INFO 00 : 03,04 or 05 Check U500 (NOTE1) IF OK replace it .
INFO 00 : 07 Reflexing the phone using Emmibox or Master card then 57#. If the problem persist sent to HTC
NOTE 1 : CHECK THE COMPONENT/S FOR PHYSICALLY DAMAGE DRY JOINT AND GOOD POSITION . - MOTOROLA CONFIDENTIAL PROPRIETARY Page 21
GSM/DCS ZAP - Level 3 Procedure
START
Put PCB in Test mode , Use GSM Keypad Simulator and digit : - 481000# Generate BF signal (1Khz) - 891# Start Recording mode
NO VOICE ANNOTATION
NO
Is present the BF signal (1Khz, with off set of 1.1 V) on pin 25 of U980 ?
Check on pin 49 of U500 the 1Khz ; If OK check U982 and the relative components (NOTE 1 and faulty) . If NOT OK check U500 (NOTE1 and faulty)
YES
- Remain enought time in recording state (20 sec.) then Digit : - 892# Stop Recording mode - 16# Turn OFF generate tone 1Khz - 893# Start Play mode
Check U701 (NOTE 1) , if OK replace it.
NO
NO
Is there the BF signal (1Khz) on pin 20 of U980 Is there activity on pin 8,9,10 of U980 during the play mode time ?
YES YES
Check the the presence of 1Khz from pin 7 of U982 to pin 46 of U500 ; If OK check U500 (NOTE 1 and faulty). If NOT OK check U982 and relative components (NOTE 1 and faulty).
Check U980 and relative components (NOTE 1) If OK Replace it.
NOTE 1 : CHECK THE COMPONENT/S FOR PHYSICALLY DAMAGE DRY JOINT AND GOOD POSITION . - MOTOROLA CONFIDENTIAL PROPRIETARY Page 22
GSM/DCS ZAP - Level 3 Procedure
START
Insert a card and connect to Ground the Thermistor line (use C830 PIN) .
CHECK CARD
NO
Is present and correct the VSWITCH Voltage on pin 1 of U902 ? Check VSWITCH components and U900 (NOTE 1) If OK replace U900 .
YES
Is present the Enable signal on pin 3 of U902 from pin 7 of BIC during the Power ON instant ?
NO
Check U703 (NOTE 1) If OK replace U703 .
YES
Is present the correct voltage on pin 5 of U902 during the Power ON instant ?
NO
Check U902 (NOTE1) If OK replace U902 .
YES
Check the J900 connector , U703 and R724/5 (NOTE 1); If OK replace U703 . Remember to remove the connection between ground and thermistor line.
NOTE 1 : CHECK THE COMPONENT/S FOR PHYSICALLY DAMAGE DRY JOINT AND GOOD POSITION . - MOTOROLA CONFIDENTIAL PROPRIETARY Page 23
GSM/DCS ZAP - Level 3 Procedure
- MOTOROLA CONFIDENTIAL PROPRIETARY -
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GSM/DCS ZAP - Level 3 Procedure
- MOTOROLA CONFIDENTIAL PROPRIETARY -
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