4. TROUBLE SHOOTING
- 117 -
4.19 Charger Trouble Shooting
Charging Current Flow
Charging Procedure
- Connecting TA or USB Cable
- Control the charging current by PM6050 IC using USB_CNT_N or CHG_CNT_N signal
- Charging Current flows into the battery by control BATT_FET_N
Check Point
- Connection of TA or USB Cable
- Charging current path
- Battery
Trouble Shooting Setup
- Connect TA or USB Cable and battery to the phone
Trouble Shooting Procedure
- Check the charger connector
- Check the charging current Path
- Check the battery
D2
D3
D4
G
S
Q402
SI3493DV-E3
D1
Q400
QST4
3 B
1
C1
C2
2
5
6
4
R406
0.1
B
3
C1
1
2
C2
5
6
4
QST4
Q401
+5V_PWR
USB_CNT_N
CHG_CNT_N
VBATT
+VPWR
USB_VBUS
ICHARGE
BATT_FET_N
ICHARGEOUT
Pass control Tr
(ON)
4.2~4.25V
Main
Battery
TA
(4.6V)
Battery FET
(ON)
Pass control Tr
(ON)
USB Cable
(5.0V)
USB Charging control
TA Charging control
Charging current
sensing
Battery charging
control
Содержание U890
Страница 1: ...Date April 2006 Issue 1 0 Service Manual Model U890 U890c Service Manual U890 U890c ...
Страница 3: ... 4 ...
Страница 20: ...3 TECHNICAL BRIEF 21 ...
Страница 46: ...3 TECHNICAL BRIEF 47 Figure PM6650 2 Functional Block Diagram ...
Страница 70: ...4 TROUBLE SHOOTING 71 4 2 SIGNAL PATH ...
Страница 109: ...4 TROUBLE SHOOTING 110 CN600 50pin LCD connector CN901 C907 C911 FB901 FB902 ...
Страница 115: ...4 TROUBLE SHOOTING 116 C226 C227 for MIC serial capacitor ...
Страница 118: ...4 TROUBLE SHOOTING 119 Q400 Q401 Q402 VBATT GND ...
Страница 139: ...Table 2 1 1 RF Block Component 6 BLOCK DIAGRAM 140 ...
Страница 140: ...6 BLOCK DIAGRAM 141 6 2 Interface Diagram U890 Interface Diagram ...
Страница 142: ...6 BLOCK DIAGRAM 143 Top Side ...
Страница 143: ...6 BLOCK DIAGRAM 144 Bottom Side ...
Страница 152: ... 153 8 pcb layout ...
Страница 153: ... 154 8 pcb layout ...
Страница 154: ... 155 8 pcb layout ...
Страница 155: ... 156 8 pcb layout ...
Страница 156: ... 157 8 pcb layout ...
Страница 157: ... 158 8 pcb layout ...
Страница 163: ...9 CALIBRATION 164 9 3 HOT KIMCHI Example Choose_U890 ...
Страница 164: ...9 CALIBRATION 165 Click APPLY button Click START button ...
Страница 165: ...9 CALIBRATION 166 Click Run button to lunch RF AUTOTEST ...
Страница 167: ... 168 ...
Страница 191: ...Note ...
Страница 192: ...Note ...