D-F20
15
15
5-4. BLOCK DIAGRAM — POWER SUPPLY SECTION —
B+ SWITCH
Q410
B+ SWITCH
Q406
B+
SWITCH
Q412
GATE
Q402
DC IN
DETECT
Q407
COMPARATOR
Q413
SWITCH
Q401
VCPU +2V
VDD +2V
VCC1+2V
POWER CONTROL
IC401 (3/3)
B+
B–
WAKE-UP RESET
SWITCH
Q408,409
J401
DC IN 4.5V
!
SYNC
SCK
SDTO
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION LR6)
2PCS,3V
D407
D801
B+ +3V
FOCUS/TRACKING COIL DRIVER
SPINDLE/SLED MOTOR DRIVER
(IC401) +3V,
HEADPHONE AMP
(IC302) +3V
D405
D406
L408
D401
L412
Q411
HIGH/BATT
XDCDT
MAIN BOARD (3/3)
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T E L
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9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
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7
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299