GTC
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Service Manual
5.9 LED
Needed Equipments:
A.
Power supply set to 4V/2A.
B.
Oscilloscope
Note: You can run LED test of MMI test program and LEDs (red, blue and green) will be
sequentially flashing or use following behaviors to check them.
a.
The red LED shall light if AC charger is plugged. Pin#4 of U21 (PWM_MLPG1_GREEN_RED)
shall be high (2.8V) and pin#6 of U21 (GP145_PWM_RED_GREEN#) shall be high (2.8V).
R267 (NO_RED) shall be high (2.8V). Pin#6 of Q6 shall be low.
b.
The green LED shall be flashing if phone camp to base station of GSM system. Pin#4 of U21
(PWM_MLPG1_GREEN_RED) shall have PWM signal and pin#6 of U21
(GP145_PWM_RED_GREEN#) shall be low (0V). R26 (NC_GREEN) shall have PWM signal.
c.
The blue LED shall flashing, if BT (blue tooth) is working. Pin#1 of R162
(PWM_MLPG2_BLUE) shall have PWM signal and pin#3 of Q8 shall have PWM signal too.
Содержание P526
Страница 1: ...GTC Service Manual P526 Repair Lv3 4 SOP Version 1 1 2008 1 10 ...
Страница 5: ...GTC Service Manual ...
Страница 6: ...GTC Service Manual 3 Introduction 3 1 Block diagram ...
Страница 7: ...GTC Service Manual 3 2 Main components and placement Top Side Bottom Side ...
Страница 27: ...GTC Service Manual 5 5 Button keypad test Needed Equipments A Power supply set to 4V 2A B Oscilloscope ...
Страница 28: ...GTC Service Manual ...
Страница 32: ...GTC Service Manual 5 8 LCD Needed Equipments A Power supply set to 4V 2A B Oscilloscope ...
Страница 42: ...GTC Service Manual 8 Test points Front End RF Switch part Including GSM antenna regions and Tx Rx traces ...
Страница 43: ...GTC Service Manual PA GSM and Edge Power Amplifier part ...
Страница 44: ...GTC Service Manual Transceiver part E syren signal from base band ...
Страница 46: ...GTC Service Manual Front End RF switch GSM antenna Pad ...
Страница 47: ...GTC Service Manual PA Component displacement plot 1 ...
Страница 48: ...GTC Service Manual Transceiver 及 E syren part Component displacement plot 2 Component displacement plot 3 ...
Страница 51: ...GTC Service Manual 8960 Select the item ...
Страница 52: ...GTC Service Manual EGSM band select If the PCS band measurement choose the PCS band ...
Страница 53: ...GTC Service Manual TCH band channel and PCL selecting If PCS band measurement choose Channel 512 and PCL0 ...
Страница 54: ...GTC Service Manual ...
Страница 55: ...GTC Service Manual ...
Страница 56: ...GTC Service Manual 8820 If PCS band measurement choose GSM PCS1900 ...
Страница 57: ...GTC Service Manual For PCS band measurement choose Channel 512 For PCS band measurement choose PCL0 ...
Страница 58: ...GTC Service Manual 850 EGSM loss fill in the positive number DCS PCS loss fill in the positive number ...
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Страница 72: ...GTC Service Manual 8960 Rx test setup ...
Страница 74: ...GTC Service Manual At DCS band fill in 512 CH DL 1805 267MHz At PCS band fill in 512 CH DL 1930 267MHz ...
Страница 75: ...GTC Service Manual ...
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Страница 86: ...GTC Service Manual 14 Test points 14 1GPS Active Path ...
Страница 87: ...GTC Service Manual 14 2 Passive Path ...
Страница 88: ...GTC Service Manual 14 3 SiRF StarIII 4 Power part test points ...
Страница 89: ...GTC Service Manual 14 4 GPS Power part Testing signal from baseband ...
Страница 90: ...GTC Service Manual 15 Component displacement GPS Antenna Testing signal from baseband ...
Страница 91: ...GTC Service Manual GPS Function Block ...
Страница 93: ...GTC Service Manual GPS Function Block Test point displacement plot 3 ...
Страница 98: ...GTC Service Manual 18 Measurement results of all test points Test point T305 Test point T306 ...
Страница 99: ...GTC Service Manual Test point C401 Test point C406 ...
Страница 101: ...GTC Service Manual 21 2 Components placement Figure of P526 board ...
Страница 103: ...GTC Service Manual 2 Choose the designed channel and then click Yes 是 是 是 是 Step 2 3 Click Run Step 3 ...
Страница 104: ...GTC Service Manual 4 Now the device is under BT test mode Step 4 3 Measured Graph ...
Страница 105: ...GTC Service Manual 4 RF Board level examination procedure Flow Chart ...
Страница 106: ...GTC Service Manual Appendix A Put SIRFDemoPPC at Micro SD Card 1 choose SiRFDemoPPC 2 choose OK ...
Страница 107: ...GTC Service Manual 1 choose OK 1 choose Connect 1 choose Done 4800 or 57600 ...
Страница 108: ...GTC Service Manual SiRFDemoPPC plantface 1 choose Signal GPS signal receiving ...
Страница 110: ...GTC Service Manual ...
Страница 111: ...GTC Service Manual Appendix B GPS firmware download 1 choose Pegasus_DGPS exe 1 choose Browse ...
Страница 113: ...GTC Service Manual The re download is finished Mobile re boot A ...