Sony D-E551 Service Manual page 3

D-E551/E555/E556CK
• IC Block Diagrams
IC301 TC9438FNEL
(DBB1) (EMP) (SM)
LRCK BCK DATA DBB2 ATT SHIFT LATCH VDX XO XI GNDX MCK
24 23 22 21 20 19 18 17 16 15 14 13
DATA MICRO COMPUTER
INTERFACE INTERFACE OSC
CIRCUIT CIRCUIT
TIMING
DINAMIC
GENERATOR
BASS BOOST
CIRCUIT
DIGITAL FILTER CIRCUIT
DEEMPHASIS FILTER CIRCUIT
ATTENUATOR OPERATIONAL CIRCUIT
∑-∆ MODULATION CIRCUIT
OUTPUT OUTPUT
CIRCUIT CIRCUIT
TEST
CIRCUIT
ANALOG ANALOG
FILTER FILTER
1 2 3 4 5 6 7 8 9 10 11 12
VDA ZD GNDD
VDD T1 P/S VDA RO GNDA VR GNDA LO
IC302 TA2120FN (EL)
BST BST PW MT MT BEEP ATT
BIAS
OUT SW BIAS SW SW TC IN GND IN B IN A SW
IN
24 20 19 18 17 16 15 14 13
23 22 21
BEEP ALC ALC
BIAS PW MT ATT
SW SW OUT B OUT A SW
ADD
B
BST
ADD A
PW PW
PW
C
B A
PWC
SW
ALC
DET
1 2 3 4 5 6 7 8 9 10 11 12
BST ADD RF IN PWC VCC OUT B OUT C OUT A PWR MIX ALC ALC
NF OUT SW GND OUT IN DET
– 29 –
IC401 MPC18A26VMEL
RS 1 36 INM3
ERROR AMP
DCDTB 2 35 RF3
DCIN DETECT
3 34
RF2 DCIN
ERROR AMP
INM2 4 CHARGESW 33 CHGSW
PWM2
INP2 5 32 BATM
CHARGE
DTC3 6 31 CHGOUT
AMP
SAWTOOTH
RF1 7 30 VIN
INM1 8 – 29 VOUT2
VG
+
INP1 9 28 NC
VG
PWM1
CMP1 10 27 VOUTB1
VG
PWM4
DTC1 11 26 VOUT1
VG
SUB
REFERENCE
VREF 12 25 UPCKB1
VG
SWEN 13 24 UPCK1
VCPU
BANDGAP
LOW VCPU
REFERENCE
RSTB 14 DETECT 23 VG
15 22
CKOUT OSC2 VDO
STEP-UP
DC-DC
CONVERTER
SYNC 16 21 SW
SYSTEM
CONTROL
17 REGULATOR 20
PCB VCPU
CHGON 18 19 GND
– 30 –
IC501 BA6386K
RF- RFO RFI VCC PLH BLT RAGC ASY
24 23 22 21 20 19 18 17
–
+
DET BLOCK
PS PL BL BS
C 25
–
+
B 26
+
–
D 27
+
A 28
–
HOLD BLOCK
FBIAS 29
+
LOOP ON
–
VC 30
FOCUS RAMP
SWITCH OSC
+
–
31
FE
+
FOCUS BIAS
–
SCRATCH
32
EI
CONTROL
2 3 4 5 6 7 8
1
GND SROCH
E F CAGC CAPC LD PD
– 31 –
IC502 BU9325BKS
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62
AVDD 1 OFFSET
TIMING ERROR
INTERPOLATION
ADJO
GENERATOR CORECTION
ASY 2
EYE 3
16 EFM
PCI 4
EFM
5
PCO
15 MIRR TEST1 6
WINDOW
7
VC PLL
ADPFI 8
ADPFD 9
AGND 10 TRACK
14 DEFECT
JUMP
RVCO 11
FOK 12
FEIN 13
FOCUS
FFCAPA FILTER
14
TRACKING
OFN 15
FILTER
13 FEO
TEIN 16
12 FOK
FOCUS
CONTROL
ATS 17
TZC 18
11 FON
19
TCAPA
TEST2 20
10 TEO
SLED CLV SERVO
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
9 DFR
IC601 SM5902AF
33 32 31 30 29 28 27 26 25 24 23
NRAS 34
A9 35
MICRO
GENERAL
A8 36
COMPUTER
PORT
INPUT
A7 37 1/F
CONTROL 1
A6 38
A5 39
DRAM 1/F COMPRESSION
A4 40
MODE
A0 41 DECODER
OUTPUT
ATTENUATOR
A1 42 THROUGH
1/F
MODE
A2 43
A3 44
INPUT
INPUT
ENCODER
BUFFER 1/F
INPUT
CONTROL 2
1 2 3 4 5 6 7 8 9 10 11
– 32 –
61
60 C1FX
59 C2FX
58 C3FX
57 C4FX
56
55
16K SRAM
54
53
53
50
49
48
47 GAINUP
CK176
46
45 BUSY
44 RW
MICRO
COMPUTER 43 DOUT
INTERFACE
42 DIN
41 MCK
SUB CODE SUB CODE
38 39
40
22
VDD1
21 ZSENSE
20 NRESET
19 YBLKCK
18 YFCLK
17 YFLAG
16 ZSRDATA
15 ZLRCK
14 ZSCK
13 YSCK
12 YLRCK