5-2 Power Management Schematic (Level 2) Circuit Diagram
VOL+
VOL-
GNDTH
10K
R971
220
R969
SYMBOL#
SW23
VOL_SW
COM
2
DOWN
1
UP
3
R970
220
END
DIGIT2
2
IN
OUT
3
Q500
2SD2114KT146
DIGIT7
DTC114YETL
U861
GND
1
DIGIT3
SEND
SOFT1
DIGIT5
D410
CL-190YG-CD-T
CLR
CL-190YG-CD-T
D409
D407
CL-190YG-CD-T
CL-190YG-CD-T
D405
CL-190YG-CD-T
D408
D406
CL-190YG-CD-T
220
R967
D411
CL-190YG-CD-T
DOWN
R502
4.7K
DIGIT6
SYMBOL*
DIGIT1
1.5K
R501
DIGIT9
DIGIT8
CL-190YG-CD-T
D412
SOFT2
UP
LEFT
DIGIT4
DIGIT10
RIGHT
R1027
220
KEYBOARD_COL(0:4)
KEYBOARD_ROW(1)
KEYBOARD_ROW(2)
+VBATT
ON_OFF
KEYBOARD_ROW(0:4)
KEYBOARD_ROW(0)
KEYBOARD_COL(4)
KEYBOARD_COL(1)
KEYBOARD_COL(0)
KEYBOARD_ROW(4)
KEYBOARD_ROW(3)
BACKLIGHT
KEYBOARD_COL(2)
KEYBOARD_COL(3)
5-2
Samsung Electronics
05-Schematic Diagrams 7/21/99 11:31 AM Page 2