– 17 –
– 18 –
D-SJ01
6-3. BLOCK DIAGRAM — POWER SUPPLY SECTION —
04
LINEAR
CONSTANT CURRENT,
CONSTANT VOLTAGE
CHARGING BATTERY
CHARGE CIRCUIT
CHARGING BATTERY
VOLTAGE DETECTOR
CIRCUIT
SAWTOOTH
WAVEFORM
OCCURRENCE
CIRCUIT
UP SIDE
PRE-DRIVER
SWITCHING
POWER
CIRCUIT 2
WAKE UP
SWITCH
Q409
LASER VOLTAGE
LIMITER
Q412
D-RAM
POWER SWITCH
Q602,603
RISING TIME
ADJUSTMENT
Q406
CHARGE
SWITCH
Q402, 407
DC IN
REGULATOR
Q403, 404
+3V POWER
SWITCH
Q401, 405
SWITCH
Q414
SWITCHING
POWER
CIRCUIT 1
LENEAR
REGULATOR
SYSTEM
CONTROL,
INPUT/OUTPUT
VG
POWER
CIRCUIT
LOW
VOLTAGE
DETETOR
CLOCK
57
51
52
43
44
42
45
63
41
CHG SW
RF4
INM4
RF21
RF21
RF2
RF2
VC
VC
VCC1
VCC1
INM2
INM2
APCREF
APCREF
PAPC
PA PC
MODE2
MODE2
MODE1
MODE1
WAKEUP
LATCHC
DATA
CLOCK
DATA
CLOCK
VLG2O
SYNC
14
13
67
8
7
3
12
48
47
58
15
2
55
59
50
46
49
4
56
11
SDTO
SCK
2
3
PD
13
LD
D
F
G
B
A
H
SYNC
DTC2D
DTC2D
DTC1D
DTC1D
INP1
INP1
RS
DC IN
V IN
RF4
INM4
RS
CHGSW
V IN
DC IN
LATCHC
WAKEUP
VLG1O
BATM1
BATM1
BATM2
CHGMNT
CHGMNT
VLG2O
VLG1O
VG
L4
9
6
VG
L4
RSTB
SLPOUT
8
VCC2_ON
46
XPOWLT
15
CHGMNT1
20
DCINMNT
17
BATMNT
6
VCC_SWITCHING
48
XAPC_OFF
4
AGCCON
SYSTEM CONTROLLER
IC801 (1/3)
RSTB
RST
VCC +2V
D-RAM
(IC602) +2V
VCPU +2V
D411
D404
D402
D406
D401
RECHARGEABLE
BATTERY
(NICKEL-METAL)
NC-WMAA
1.2V x 2
700mAh
+3V,
SPINDLE MOTOR
DRIVER (IC402) +3V,
HEADPHONE
AMP (IC351) +3V
DC IN 4.5V
–
+
VG
VCC +3V
CHARGE
LOW BATTERY
DETECTOR
IC404
E
C
POWER CONTROL
IC401 (1/2)
J401
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