Sony D-E505 Service Manual page 17

• IC Block Diagrams
IC301 TC9438FNEL
(DBB1)
(EMP) (SM)
LRCK BCK DATA DBB2 ATT LATCH VDX XO XI GNDX MCK
SHIFT
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
VDD P/S VDA RO GNDA VR GNDA LO VDA ZD GNDD
T1
IC302 TA2120FN (EL)
BST BST BIAS PW MT MT BEEP ATT
OUT SW IN BIAS SW SW TC IN GND IN B IN A SW
24 23 20 19 18 17 16 15 14 13
22 21
ALC ALC
BIAS PW MT BEEP ATT
SW SW SW
OUT B OUT A
ADD
B
BST
ADD A
PW
PW PW
C
B A
PWC
SW ALC
DET
7 8 11
1 2 3 4 5 6 9 10 12
BST ADD RF IN PWC VCC OUT B OUT C OUT A PWR MIX ALC ALC
NF OUT SW GND OUT IN DET
– 36 –
IC401 MPC18A26VMEL
RS 1
ERROR AMP
DCDTB 2
DCIN DETECT
RF2 3
ERROR AMP
INM2 4 CHARGESW
PWM2
5
INP2
CHARGE
DTC3 6
AMP
SAWTOOTH
RF1 7
INM1 8 –
VG
+
INP1 9
PWM1
CMP1 10
VG
PWM4
DTC1 11
SUB
REFERENCE
12
VREF
VG
SWEN 13
VCPU
BANDGAP
LOW VCPU
REFERENCE
14
RSTB DETECT
CKOUT 15
OSC2
STEP-UP
DC-DC
CONVERTER
SYNC 16
SYSTEM
CONTROL
PCB 17 REGULATOR
CHGON 18
– 37 –
IC501 BA6386K
RF-
24
36 INM3
35 RF3
34 DCIN
C 25
33 CHGSW
–
32 26
BATM B
+
31 CHGOUT
27
D
30 VIN
29 VOUT2 A 28
28
NC
VG
VOUTB1
27 FBIAS 29
26 VOUT1
VG
VC 30
25
UPCKB1
24 UPCK1
FE 31
23
VG
22 VDO
21 SW EI 32
20 VCPU
1
E
19 GND
RFO RFI VCC PLH BLT RAGC ASY
23 18 17
22 21 20 19
–
+ DET BLOCK
PS PL BL BS
+
–
+
–
HOLD BLOCK
+
LOOP ON
–
FOCUS RAMP
SWITCH OSC
+
–
+
FOCUS BIAS
–
SCRATCH
CONTROL
2 3 4 5 6 7 8
GND SROCH
F CAGC CAPC LD PD
– 38 –
16 EFM
15
MIRR
14
DEFECT
13 FEO
12 FOK
11 FON
10 TEO
9 DFR