3. TECHNICAL BRIEF
- 62 -
Handset main MIC BLK
Audio Amp for loud Speaker
MIC
3
G3
5
OUT
1
4
PWR
U503
SP0102BE3
2
G1
G2
0
R509
47p
C525
10u
C523
C531
10p
C529
22n
C528
22n
C530
33p
MICBIAS
MIC1N
MIC1P
Audio AMP
C539
0.1u
20K
R516
C536
22n
BYPASS
B3
GND
IN+
A1
IN-
C1
SD_MODE
B2
C2
SD_SEL
B1
VDD
A3
VO1
C3
VO2
LM4898ITLX-NOPB
U504
A2
R517
20K
22n
C537
C540
82p
C538
1u
100K
R512
C535
82p
R521
100K
R513
0
100K
R520
AMP_PWR
VREG_5V
M_SPK-
SPK_AMP_EN
M_SPK+
AMP_PWR
SPK_N
SPK_P
⇒
Speaker
Summary of Contents for U890
Page 1: ...Date April 2006 Issue 1 0 Service Manual Model U890 U890c Service Manual U890 U890c ...
Page 3: ... 4 ...
Page 20: ...3 TECHNICAL BRIEF 21 ...
Page 46: ...3 TECHNICAL BRIEF 47 Figure PM6650 2 Functional Block Diagram ...
Page 70: ...4 TROUBLE SHOOTING 71 4 2 SIGNAL PATH ...
Page 109: ...4 TROUBLE SHOOTING 110 CN600 50pin LCD connector CN901 C907 C911 FB901 FB902 ...
Page 115: ...4 TROUBLE SHOOTING 116 C226 C227 for MIC serial capacitor ...
Page 118: ...4 TROUBLE SHOOTING 119 Q400 Q401 Q402 VBATT GND ...
Page 139: ...Table 2 1 1 RF Block Component 6 BLOCK DIAGRAM 140 ...
Page 140: ...6 BLOCK DIAGRAM 141 6 2 Interface Diagram U890 Interface Diagram ...
Page 142: ...6 BLOCK DIAGRAM 143 Top Side ...
Page 143: ...6 BLOCK DIAGRAM 144 Bottom Side ...
Page 152: ... 153 8 pcb layout ...
Page 153: ... 154 8 pcb layout ...
Page 154: ... 155 8 pcb layout ...
Page 155: ... 156 8 pcb layout ...
Page 156: ... 157 8 pcb layout ...
Page 157: ... 158 8 pcb layout ...
Page 163: ...9 CALIBRATION 164 9 3 HOT KIMCHI Example Choose_U890 ...
Page 164: ...9 CALIBRATION 165 Click APPLY button Click START button ...
Page 165: ...9 CALIBRATION 166 Click Run button to lunch RF AUTOTEST ...
Page 167: ... 168 ...
Page 191: ...Note ...
Page 192: ...Note ...