Sharp VL-A111UL Service Manual - Page 44
Main Battery Circuit Block Diagram
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VL-A111U/AH131U VL-AH151U/AH161U 7-4. MAIN BATTERY CIRCUIT SECTION BLOCK DIAGRAM 44 DC JACK input Q2901 Voltage detective circuit VDC
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44
VL-A111U/AH131U
VL-AH151U/AH161U
7-4. MAIN BATTERY CIRCUIT SECTION BLOCK DIAGRAM
DC JACK input
Voltage detective
circuit
V
DC
<8V
with JACK : OPEN
with out JACK : GND Short circuit
Q2903 with FET is always "OFF" at DC input.
NON REG
Q2903
SYS 3.0V
REG circuit
ADP-DET
BATT.-DET
Charging : Red light up
Completion : Green light up
CHARGE-ON_H
PRE-CHARGE-ON
Charge control IC
Vcc
SW1
SW2
MM1332G
LV
GND
EXT
CEL
CS
8
1
7
2
3
4
6
5
LED Red
LED Green
LED_G
LED_R
T
Ni-MH
battery
System microcomputer
Vcc
DC input feed
DC input "ON"
"OFF" detection
Battery voltage
detection
(BATT-TEMP)
T Terminal
detection
(BATT-IN)
VCR-H
Q2901