Block Diagram - Power Supply Section - Sony D-E990 Service Manual

5-3. BLOCK DIAGRAM – POWER SUPPLY Section –
PD
(Page 9) A
LD
(Page 9) B
VG
C
(Page 9)
SYNC
D
(Page 10)
SDTO
(Page 10) F
SCK
(Page 10) G
RSTB
H
(Page 11)
VCC2_ON 8
SLPOUT
13
XPOWLT
46
WAKE UP
SWITCH
Q409, 413,
Q416
RIPPLE
VCC 2V FILTER
Q406
D416
LASER VOLTAGE
D408
SYSTEM CONTROLLER LIMITER
IC801 (3/3) CHG/HOLD Q412
XLEDDISP 5
VCPU 2V
VCC_SWITCHING 6
XAPC_OFF 48
AGCCON 4
CHGMNT1 15
DCINMNT 20
EX_BATT 40
BATMNT 17
D-RAM B+
SWITCH
(IC602)
Q602
2V
Q603
RST
E
(Page 10) DVDD
05
– 13 –
POWER CONTROL
IC401 (1/2)
PA PC
3
SYNC
11
DATA
14
CHARGING BATTERY
CLOCK
VOLTAGE DETECTOR
13
CHG SW
CIRCUIT CHGMNT
VLG2O RF4
LINEAR
67
INM4
CONSTANT CURRENT,
INM2
RS CONSTANT VOLTAGE
8
CHARGING BATTERY
CHARGE CIRCUIT
V IN
RF2
SAWTOOTH
7
WAVEFORM
RF21 OCCURRENCE
CIRCUIT
RF2
LATCHC INM2
15
SWITCHING
APCREF
POWER
WAKEUP PAPC
12 CIRCUIT 2
RSTB MODE2
48
DTC2D
VLG2O
VCP DTC1D
47
SWITCHING
INP1 UP SIDE
POWER
PRE-DRIVER VLG1O
BATM1 VC
58 CIRCUIT 1
VCP
RF21 MODE1 LENEAR
2
REGULATOR
INP1
55
VLG1O
59 WAKEUP
MODE2 LATCHC
SYSTEM
50
DATA CONTROL,
VC
INPUT/OUTPUT
46 CLOCK VG
VG
POWER L4
CIRCUIT
LOW
MODE1
49 VOLTAGE
APCREF CLOCK
DETECTOR
4
CHGMNT
56
B+ D404
VCC 2V
SWITCH
Q401, 405
DTC2D
51
D411
DTC1D
52
BATM1
LOW BATTERY
SWITCHING
DETECTOR
BATM2 Q414
IC404
57
3V,
SPINDLE MOTOR
DRIVER (IC402) 3V,
HEADPHONE
AMP (IC351) 3V
VG
9
D402
L4
6
CHARGE
D406
CHARGE ON
RF4
44 SWITCH
Q403, 404
INM4
43
DC IN
D401
DC IN
45
CHARGE
RS
42 CONTROL
Q402, 407
CHGSW
41
V IN
63
EXTERNAL BATTERY
SWITCH
Q408
D410
– 14 –
• Waveforms
1 IC401 qd CLOCK, IC402 9 CLK
IC601 wg CLOK, IC801 q; SCK 6 IC601 o; BCK
2 V/DIV, 2 µs/DIV
2.1 Vp-p
VCC 3V
1.9 µ s
2 IC601 e; R4M 7 IC601 of XTAO
500 mV/DIV, 200 ns/DIV
2.1 Vp-p
RECHARGEABLE
BATTERY
236 ns
NH-14WM
2PCS. 2.4V
3 IC601 rd MDP (CD PLAY) 8 IC801 ul XIN, IC802 q; MCLK
1 V/DIV, 2 µs/DIV
2.1 Vp-p
J401 (1/2)
EXT BATT
J401 (2/2)
DC IN 4.5V
– +
3.8 µ s
4 IC601 ua RFAC (CD PLAY)
100 mV/DIV, 500 ns/DIV
350 – 550 mVp-p
5 IC601 ih LRCK
1 V/DIV, 20 µs/DIV
2.1 Vp-p
22.6 µ s
D-E990/EJ915
1 V/DIV, 200 ns/DIV
2.1 Vp-p
472 ns
500 mV/DIV, 50 ns/DIV
2.1 Vp-p
59 ns
500 mV/DIV, 200 ns/DIV
2.1 Vp-p
236 ns
– 15 –