4. TROUBLE SHOOTING
- 52 -
4.3. Power On Trouble
• Power On Sequence
– Connecting Battery
– Power-On Key Detection
– END_ON_OFF signal goes to ABB and then ABB reset DBB by ON_OFF signal
– ON_OFF turn low(0V) to HIGH(1.5V) and it resets Calypso.
– All LDOs are turned on.
• Major Check Points
1. Automatically Power On
→
JTAG Signal is contacted with Cover?
2. Not Power On
– Battery Voltage is over 3.35V?
If it is not, wait for 1min. (Pre-Charge mode)
– JTAG Signal is contacted with Cover?
– Power-On Key Detection(END_ON_OFF signal)
– Outputs of LDOs
– 26MHz(VCTCXO), ...
• Trouble Shooting Setup
– Connect PIF-UNION to the phone.
– Set the TI-remote switch at PIF-UNION off.
• Trouble Shooting Procedure
– Check Battery Voltage
– END_KEY Dome Switch condition
– Check the output voltages of all LDOs.
END
AVL5M02-200
1
2
END
VA401
PWON
Содержание L1150
Страница 1: ...Service Manual Model L1150 Service Manual L1150 P N MMBD0034601 Date June 2004 Issue 1 0 ...
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Страница 18: ...3 H W Circuit Description 17 Figure 1 Receiver Part Block Diagram ...
Страница 42: ...3 H W Circuit Description 41 A BaseBand Components Component Side ...
Страница 43: ...3 H W Circuit Description 42 B BaseBand Components Keypad Side C Digital Baseband DBB Processor ...
Страница 51: ...4 TROUBLE SHOOTING 50 BaseBand Part Troubleshooting 4 1 Baseband Components Component Side 4 TROUBLE SHOOTING ...
Страница 102: ...5 DISASSEMBLY INSTRUCTION 101 5 DISASSEMBLY INSTRUCTION 2 1 1 2 ...
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Страница 113: ...7 BLOCK DIAGRAM 112 Baseband Part 7 BLOCK DIAGRAM The Block Diagram of the Baseband Part ...
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