4. TROUBLE SHOOTING
- 109 -
4.17 Speaker phone path
MSM6275 HPH_R, HPH_L
→
Filter block (SPK_R: R202/C210/C211/R203/R204/C212, SPK_L:
R206/C214/C215/R207/R208/C216)
→
Audio AMP(SPK_R:U507, SPK_L:U506)
→
SPK_R:SPK_RP,SPK_LP , SPK_L:SPK_LP,SPK_LN (connector)
→
Speaker
Start
Sine wave appears at
R202 , R206 ?
Change the Main board
NO
Connect the phone to network
equipment and setup call
Setup 1KHz tone out
Sine wave appears at
C211/R203 and C215/R207?
YES
Check C211/R203 and C215/R207 or
Change the Main board
NO
SPK_AMP_EN(C288) is
2.6V?
Change the Main board
NO
YES
Sine wave appears at
Pin21,22,23,24 of CN602?
NO
YES
YES
Soldering speaker OK?
Re-solder speaker
NO
Can you hear the tone?
Change the speaker
NO
YES
END
YES
Change the Main board
Sine wave appears at
SPK_LP,SPK_LN and SPK_RP,SPK_RN
of LCD-FPCB
Change the LCD-FPCB
NO
YES
Summary of Contents for CU500 - Cell Phone
Page 1: ...Date June 2006 Issue 1 0 Service Manual Model CU500_TU500 Service Manual CU500_TU500 ...
Page 3: ... 4 ...
Page 41: ...3 TECHNICAL BRIEF 42 Figure PM6650 Functional Block Diagram ...
Page 68: ...4 TROUBLE SHOOTING 69 4 1 RF Component Bottom Side 4 TROUBLE SHOOTING ...
Page 69: ...4 TROUBLE SHOOTING 70 ...
Page 73: ...4 TROUBLE SHOOTING 74 Check R400 of PMIC U400 Check R223 of MSM U200 ...
Page 77: ...4 TROUBLE SHOOTING 78 For testing Max power of UMTS 1900MHz is needed ...
Page 85: ...4 TROUBLE SHOOTING 86 ...
Page 87: ...4 TROUBLE SHOOTING 88 ...
Page 91: ...4 TROUBLE SHOOTING 92 ...
Page 95: ...4 TROUBLE SHOOTING 96 R300 Q401 Q400 ...
Page 98: ...4 TROUBLE SHOOTING 99 Q501 X 200 U505 ...
Page 105: ...4 TROUBLE SHOOTING 106 CN602 CN1 ...
Page 107: ...4 TROUBLE SHOOTING 108 C102 C104 R200 R201 ...
Page 109: ...4 TROUBLE SHOOTING 110 CN602 SPK_LP L N SPK_RP RN AMP block ...
Page 111: ...4 TROUBLE SHOOTING 112 MIC U303 ...
Page 113: ...4 TROUBLE SHOOTING 114 Mic input 5 4 2 1 3 6 Headset detect port ...
Page 129: ...5 DOWNLOAD 130 3 NV Restore error When you meet the NV Restore error ...
Page 130: ...5 DOWNLOAD 131 Connect to the phone Click on Cancel ...
Page 135: ...Table 6 1 1 RF Block Component 6 BLOCK DIAGRAM 136 ...
Page 138: ...6 BLOCK DIAGRAM 139 Top Side ...
Page 139: ...6 BLOCK DIAGRAM 140 Bottom Side ...
Page 147: ... 148 8 pcb layout ...
Page 148: ... 149 8 pcb layout ...
Page 149: ... 150 8 pcb layout ...
Page 150: ... 151 8 pcb layout ...
Page 151: ... 152 ...
Page 157: ...9 CALIBRATION 158 9 3 HOT KIMCHI Example Choose Exe_Cu500Ag_100 ...
Page 158: ...9 CALIBRATION 159 Click APPLY button Click START button ...
Page 161: ... 162 ...
Page 185: ...Note ...
Page 186: ...Note ...