4. TROUBLE SHOOTING
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4. BB Trouble Shooting
4.7 Power ON Trouble
Power On sequence of L602i is :
PWR(END) key press -> PM_ON_SW_N go to low(D200), PM6650-2 KPDPWR_N pin(24) ->
PM6650-2 Power Up -> VREG_MSMC_1.2V(L405), VREG_MSME_1.8V(L406),
VREG_MSMP_2.7V(C426), VREG_MSMA_2.6V(C423), VREG_TCXO_2.85V(C402) power up and
system reset assert to MSM -> Phone booting and PS_HOLD(D400) assert High to PMIC(PM6650-2).
NO
YES
YES
YES
YES
YES
NO
NO
NO
NO
Start
Battery voltg. higher
than 3.28V?
Press PWR key
Keypad LED on?
D200 high to low
when key press?
VREG_MSMC_1.2V,
VREG_MSMP_2.7V, VREG_MSME_1.8V
VREG_TCXO_2.85V,
VREG_MSMA_2.6V power up?
Is clock ok?
R413,C402 : 19.2M
X400 : 32.768Khz
Change the Main board
Change or charging the
Battery
Follow the LED trouble
shoot
Check the Diode
Change the PMIC
Check the TXCO, X-TAL
Z3X-BOX.COM
Содержание L602i
Страница 3: ... 4 Z 3 X B O X C O M ...
Страница 34: ...3 TECHNICAL BRIEF 35 3 7 Hardware Architecture Figure Simplified Block Diagram Z 3 X B O X C O M ...
Страница 46: ...3 TECHNICAL BRIEF 47 Figure PM6650 2 Functional Block Diagram Z 3 X B O X C O M ...
Страница 71: ...4 TROUBLE SHOOTING 72 4 2 SIGNAL PATH WCDMA Tx PATH WCDMA Rx PATH Z 3 X B O X C O M ...
Страница 83: ...4 TROUBLE SHOOTING 84 4 5 5 Check RF Rx Level TP1 TP3 TP4 Bias1 TP2 Z 3 X B O X C O M ...
Страница 101: ...4 TROUBLE SHOOTING 102 LCD Control data flow Z 3 X B O X C O M ...
Страница 109: ...4 TROUBLE SHOOTING 110 AUDIO AMP R502 C501 R503 FP500 501 CN600 PIN 14 15 Speaker Soldering Point Z 3 X B O X C O M ...
Страница 113: ...4 TROUBLE SHOOTING 114 Z 3 X B O X C O M ...
Страница 126: ...5 DOWNLOAD 127 Download of Module image in progress Download process has completed successfully Z 3 X B O X C O M ...
Страница 130: ...5 DOWNLOAD 131 Click on X button to use another function Z 3 X B O X C O M ...
Страница 134: ...6 BLOCK DIAGRAM 135 Table 2 1 1 RF Block Component Z 3 X B O X C O M ...
Страница 137: ...6 BLOCK DIAGRAM 138 Top Side Z 3 X B O X C O M ...
Страница 138: ...6 BLOCK DIAGRAM 139 Bottom Side Z 3 X B O X C O M ...
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Страница 149: ... 150 8 PCB LAYOUT Z 3 X B O X C O M ...
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Страница 151: ... 152 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 152: ... 153 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 153: ... 154 LGMC 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 154: ... 155 LGMC 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 155: ... 156 8 PCB LAYOUT Z 3 X B O X C O M ...
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