4.5 Power On Trouble
4.5.1 Power On Sequence
Connecting Battery
• Power-On Key Detection
• PWON signal goes to ABB and then ABB reset DBB by ON_OFF signal
• ON_OFF turn low(1.5V) to HIGH(2.8V) and it resets Calypso
4.5.2 Check Points
• Battery Voltage
• Power-On Key Detection (PWON signal)
• Outputs of LDOs
4.5.3 Trouble Shooting Setup
• Connect PIF-UNION to the phone
• Set the TI-remote switch PIF-UNION off
4.5.4 Trouble Shooting Procedure
• Check Battery voltage
• END_KEY Dome Switch condition
• Check the output voltages of all LDOs
4. TROUBLE SHOOTING
- 48 -
VA400
680
R400
END
PWON
Z3X-BOX.COM
Содержание MG220
Страница 1: ...Date May 2006 Issue 1 0 Service Manual MG220 Service Manual Model MG220 Z 3 X B O X C O M ...
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Страница 32: ...3 H W Circuit Description 31 Figure 14 Power Supply Scheme Z 3 X B O X C O M ...
Страница 46: ...4 TROUBLE SHOOTING 45 4 TROUBLE SHOOTING 4 1 Main Components Placement Z 3 X B O X C O M ...
Страница 91: ...5 DOWNLOAD 90 5 2 Download Procedure 5 2 1 Computer Program file MultiGSM EXE Click Z 3 X B O X C O M ...
Страница 93: ...5 DOWNLOAD 92 5 2 3 Configuration Setting C GSMULTI Model MG220 dll Z 3 X B O X C O M ...
Страница 94: ...5 DOWNLOAD 93 5 2 4 Press Start Button Z 3 X B O X C O M ...
Страница 95: ...5 DOWNLOAD 94 5 2 5 After Start Button Which Stand by condition Z 3 X B O X C O M ...
Страница 96: ...5 DOWNLOAD 95 5 2 6 SW downloading Condition MG220 Z 3 X B O X C O M ...
Страница 97: ...5 DOWNLOAD 96 5 2 7 SW downloading END Condition Z 3 X B O X C O M ...
Страница 99: ...6 SERVICE AND CALIBRATION 98 4 Click on CALIBRATION START button Z 3 X B O X C O M ...
Страница 108: ... 107 8 pcb layout Z 3 X B O X C O M ...
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