5. Trouble shooting
- 79 -
5.3 Charging trouble
Check Points
-Connection of TA (check TA voltage 4.8V)
-Charging Current Path component voltage drop
-Battery voltage
•
Charging method : CC-CV
•
Switch-off voltage : 3.35V
•
Charger detect voltage : about 4.0V
•
Charging temperature ADC range
•
Charging time : 3h under
- ~ -20
°
C : small charging operation.
•
Charging current : 500mA
- -20
°
C ~ 60
°
C : charging.
•
Cutoff current : 100mA
- 60
°
C ~ : not charging operation small
•
Low battery alarm
charging operation.
-. Idle : 3.62V
-. Dedicated : 3.50V
R219
100K
VCHG
C229
10u
C235
33u
R225
0.15
2
1
D3
3
G
4
S1
6
S2
NDC652P
Q203
5
D1
D2
VBAT
C230
47n
CRS08
D201
VCH_CTL
VCHS
Summary of Contents for Prada KE850
Page 1: ...Date March 2007 Issue 1 0 Service Manual Model KE850 Service Manual KE850 ...
Page 3: ... 4 ...
Page 5: ... 6 ...
Page 71: ...4 PCB layout 72 Main PCB bottom Main PCB bottom placement ...
Page 115: ... 116 6 Download S W upgrade 6 Press the START button ...
Page 117: ...6 Download S W upgrade 118 KE850 KE850P40 7 V09a KE850 KE850P40 7 V09a ...
Page 127: ... 128 LGMC 8 pcb layout ...
Page 128: ... 129 LGMC 8 pcb layout ...
Page 129: ... 130 LGMC 8 pcb layout ...
Page 130: ... 131 LGMC 8 pcb layout ...
Page 131: ... 132 8 pcb layout ...
Page 132: ... 133 8 pcb layout ...
Page 133: ... 134 8 pcb layout ...
Page 134: ... 135 8 pcb layout ...
Page 135: ... 136 8 pcb layout ...
Page 136: ... 137 8 pcb layout ...
Page 137: ... 138 ...
Page 149: ... 150 ...
Page 151: ... 152 ...
Page 172: ...Note ...
Page 173: ...Note ...