- 62 -
Handset main MIC BLK
Audio Amp for loud Speaker
MIC
C534
NA
R522
0
C526
47p
EVLC14S02050
VA520
NA
C535
22n
C527
C528
22n
3
G2
5
G3
1
OUT
PWR
4
SP0102BE3
U502
G1
2
10u
C519
MIC1N
MIC1P
MICBIAS
Audio AMP
NA
R524
0.1u
C542
R532
100K
COM2
A3
GND
B1
IN1
C2
IN2
A2
NC1
C1
NC2
A1
NO1
C4
NO2
A4
V+
B4
NLAS4684FCT1G
U503
COM1
C3
C544
NA
R535
33K
C537 0.1uF
R533
33K
C539
22p
R620
0
VDD
B1
VO1
A3
VO2
C3
U504
BYPASS
A2
GND
B3
A1
IN+
C1
IN-
B2
SD_MODE
SD_SEL
C2
LM4898ITLX-NOPB
NA
R525
3.9K
R534
R527
3.9K
L500
10
R623
10
R624
C5401uF
L501
C543 0.1uF
C541
22p
R530
0
0
R531
NAC607
C606
NA
0
R622
0
R621
C538
NA
VREG_5V
SW_EN
MID_SPK-
SPK_AMP_EN
SPK+
SPK-
RCV+
RCV-
=> Speaker
Z3X-BOX.COM
Summary of Contents for U300
Page 3: ... 4 Z 3 X B O X C O M ...
Page 24: ...3 TECHNICAL BRIEF 25 Figure 3 3 1 1 RFR6250 IC functional block diagram Z 3 X B O X C O M ...
Page 46: ...3 TECHNICAL BRIEF 47 Figure PM6650 2 Functional Block Diagram Z 3 X B O X C O M ...
Page 76: ...4 TROUBLE SHOOTING 77 4 5 Checking WCDMA Block Z 3 X B O X C O M ...
Page 77: ...4 TROUBLE SHOOTING 78 4 3 5 1 2 Z 3 X B O X C O M ...
Page 82: ...4 TROUBLE SHOOTING 83 4 5 5 Check RF Rx Level Test Point RF Rx Level Z 3 X B O X C O M ...
Page 85: ...4 6 Checking GSM Block 4 TROUBLE SHOOTING 86 Z 3 X B O X C O M ...
Page 87: ...4 TROUBLE SHOOTING 88 Z 3 X B O X C O M ...
Page 89: ...4 TROUBLE SHOOTING 90 Z 3 X B O X C O M ...
Page 92: ...4 TROUBLE SHOOTING 93 Z 3 X B O X C O M ...
Page 95: ...4 TROUBLE SHOOTING 96 Z 3 X B O X C O M ...
Page 110: ...4 TROUBLE SHOOTING 111 C515 C516 CN501 Z 3 X B O X C O M ...
Page 116: ...4 TROUBLE SHOOTING 117 C201 C202 for MIC capacitor Z 3 X B O X C O M ...
Page 119: ...4 TROUBLE SHOOTING 120 Q400 Q401 Q402 VBATT GND Z 3 X B O X C O M ...
Page 140: ...6 BLOCK DIAGRAM 141 Z 3 X B O X C O M ...
Page 141: ...6 2 Interface Diagram U300 Interface Diagram 6 BLOCK DIAGRAM 142 Z 3 X B O X C O M ...
Page 149: ... 150 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 150: ... 151 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 151: ... 152 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 152: ... 153 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 153: ... 154 Z 3 X B O X C O M ...
Page 156: ...9 Calibration 157 Check testing object Click Start for Calibration Z 3 X B O X C O M ...
Page 157: ...9 Calibration 158 Show result of calibration Show result Z 3 X B O X C O M ...
Page 159: ... 160 Z 3 X B O X C O M ...
Page 183: ...Note Z 3 X B O X C O M ...
Page 184: ...Note Z 3 X B O X C O M ...