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4.14 Earphone Trouble
-72-
Block Diagram
Earphone Detecting Operation
• The DBB read JACK_DETECT port periodically and if the voltage of “JACK_DETECT” goes to 0V, it
detects ear-jack inserted.
•The ABB operates A/D conversion continuously and if the voltage of “HOOK_DETECT” node goes to
about 40mV, it detects hook switch is pushed in call state.
Receiver
GND
MIC
EAR_JACK SPEC
Earphone Sending Path
• HSMICP is the audio signal from the microphone of the earphone.
•R215, R216 and C219 make the path of the audio signal from the microphone of the earphone.
•This audio signal is delivered to ABB(IOTA).
Earphone Receiving Path
• HSO is the audio signal from ABB(IOTA).
• R232,C223,R298 and R299 make the path of the audio signal from ABB to earphone.
Summary of Contents for L1100
Page 1: ...Service Manual Model L1100 Service Manual L1100 P N MMBD0032801 Date June 2004 Issue 1 0 ...
Page 31: ... 30 Figure 14 Power Supply Scheme ...
Page 46: ... 45 Figure 25 CLC344E Camera Chip Circuit ...
Page 49: ... 48 Figure 28 Camera Module Circuit MAIN BOARD FPCB ...
Page 62: ...4 9 Microphone Trouble 61 Circuit Diagram ...
Page 82: ... 81 U602 FPCB CN2 1 3 U601 5 4 Test Points 1 20 2 19 ...
Page 98: ...5 1 Disassembly 5 ASSEMBLY INSTRUCTION 97 2 1 1 2 ...
Page 99: ...98 1 2 3 2 1 ...
Page 100: ... 99 1 2 3 ...
Page 101: ... 100 ...
Page 103: ...6 2 Download Procedure 1 Execute Fluid_GUI exe and select Erase Program flash menu 104 ...
Page 104: ...2 Click the Add button Then choose m0 file which is going to download 105 ...
Page 108: ...6 Wait for downloading to be finished 109 ...
Page 125: ... 127 9 PCB LAYOUT ...
Page 126: ... 128 9 PCB LAYOUT ...
Page 129: ... 131 12 EXPLODED VIEW REPLACEMENT PART LIST 12 1 EXPLODED VIEW ...