Level Diagram - Kenwood TK-2140 Service Manual

LEVEL DIAGRAM

49
TK-2140 TK-2140
KSC-25
Circuit Description
Charger Flow chart
50
KSC-25
Power on (LED : off)
Initialization
Are
output terminals
shorted?
No (LED : off)
LED color : Red LED color : Red
Battery insert
(LED color : Red)
Not sensing for 3sec
Is the
battery abnormal?
(Shorted)
No
Is the
each terminal to short
another terminal
No
No touch
effect in each terminal
No
T 47 C
+2 C, –1 C
No
No
Is Li-ion?
Yes
Trickle charging
Vmin 4.8V 0.1V
130mA 15mA
No
Fast charge
(LED color : Red) 1200mA 5%
Ni-Cd, Ni-MH : Constant current charging
Not sensing for 4min
Yes
Vmax 10.8V 0.1V
No
When battery Yes Yes
voltage is 8.9V+0.1V, –0V, Timer 512sec
V 0
No
No
After 30min
Yes Yes
from starting fast charging
V 0 Timer
V/12min
282mV/12min
No
No
Yes Yes
–96mV – V –72mV Timer 128sec
No No
Yes
T 55 C 4 C
No
No
Timer 120min
Yes
Trickle 55mA +10mA, –15mA
Charge (LED color : Green)
No
Total timer 10H
Yes
Cut-off
LED color : Green
Yes
Yes
Abnormal
Red LED flash
reset?
No
Yes
Yes
Yes
LED color : Red flash
Yes
Yes
Yes
Trickle charging
Vmin 4.8V 0.1V
130mA 15mA
No
Fast charge
(LED color : Red) 945mA 5%
Li-ion : Constant current & constant voltage charging
Not sensing for 4min
Yes
Is peak?
8.4V +0%, –2%
No
Yes
Charging current
100mA 20mA
No
Yes
T 55 C 4 C
Yes
256sec
No
No Yes
Timer 180min
No
No
Total timer 10H
Yes
LED color : Green