Block Diagram - Audio Section - Sony Walkman PCM-M1 Service Manual

4-2. BLOCK DIAGRAM — AUDIO SECTION —
AUDIO BLOCK
Q301
PLUG IN POWER
DC BUS
S301
S301
MIC/LINE
MIC/LINE
IC301
J301 MIC AMP
CN303
8
MIC/LINE 3
L IN 3
3
IN
1
CN304
2
S304
4
MIC Q101
ATT R-CH
MUTE
Q303
XVOLCCK
VOLDT
XAGCS
S301
MIC/LINE
MAIN BLOCK
VCO
IC520
Q529
2
POWER
6
TRRIGGER
3
IC511
4
4
POWTRG 14 VVDD VCON
TO
3
DISPLAY 1 LVCC
DIGANA
7 BLOCK
REMOTE
SIRCS VCO
DIGITAAL
IC513
I/O
1 TX
IC514
5 RX
CN507
CN506
RF RF +3.5V 1
DRUM RF +3.5V
MODULE
REDT 8
MOTOR(2/2)
RFDT 3
TP525
SWP 6
REPB 9
ACH
HEAD PIPC
7
ATFAGC 16
PILOT
10
BCH RFENV 5
HEAD
TP524
ATFA 13
4
IC518
ATFB 12 VDT
D/A
5 14
PCMA
15 CONV. VCK
2 13
PCMB 14
3 12
9 8
IC519
+3.5V REG
19
16
REC VOL
BOARD
IC310
INPUT
SELECTOR
RV301
CN303
1 3
(1/2)
5 L OUT 5
9
10 2
CN304
11
VEE
8 12
Q304,305,310
Q311,313,323
LIMIT
IC302
CIRCUIT
IC309 LINE
AMP
AGC
8
13 H1 W1 11 3
1
3 CLK 2
4 D 20 +3.5V
VCC
5 RST
+3.5V
51 VDD 62
XT2I
1 VDD X501
22.5792MHz
IC506 XT2O 61
DIGITAL
5
SIGNAL SIGNAL
4 3
12 43 PDO PROCESSOR XT3I 65
X502
IC512
24.576MHz
3 46 PLCO XT3O 64
TX DADO
52 76
DIGITAL
I/O
RX ADDI
50 77
ADDN
78
ADDT
74
REDT
DADT
41
RFDT DSP 75
35
XBCK
37 SWP XBCK 72
LR03
40 LR03 67
REPB
IC507
F256
39 PIPC F256 57 S RAM
90,89 11-13
D0-D7 28
15-19
87-82
10-3,25
91-100
A00-A14 24,21,23
2-6
2,26,1
XOE 22 8 OE
SUB I/O
XWE WE
27 7
IC508
NV RAM
20 21 22 23 24 14 17 16 31 28 27 45
18 19
EXCK
2 SK VCC 8
SDSI
3 SI
SDSO
4 SO
1 CS RST 6
57 64 80 76 94 75 70 18 49 48 47 46 100 89 84 83 71 93
14 77
– 29 –
Q324
RIPPLE
+3.5V
FILTER
Q325,326
IC303
IC304
LINE
AD/DA
AMP
CONVERTER Q307,308
8
RIPPLE
VREF 1
FILTER
6
1 VRADL VA 7
VD 21
ADDT
STDO
14
OL+ 26
DADT
R308 SDTI
13
XBCK
SCLK 12
FS0 LR03
16 DEM0 11
LRK
FS1 256FS
IC102
17 DEM1 MCLK 15
Q302,D102 ADSBY
24 PWAD
AGC AINL 5
DASBY
23 PWDA
CIRCUIT
VREFL 2
XVOLCCK
VOLDT
Q306
XVOLCS
RIPPLE
-3.5V
FILTER
Q309,315,319
+3.5V
S303
AUTO/LIM/MAN
AVL SW IN
+3.5V
1 21 19 20 33 16 17 34 18 26 29 30 11 10 7 8 6 32 31 27 5 24
1 21 19 20 33 16 17 18 26 30 11 10 7 8
34 29 6 32 31 27 5 24
+3.5V
+3.5V
78 27 21 90 17 62 10 9 20 11 16 13 15 7 8 25 26 24
Q328
RIPPLE
+3.5V
FILTER
Q329,330
+3.5V
IC308
LINE AMP
8 8
3
1
2
+3.5V
4 Q318
IC306
+3.5V D301
EVR
IC305
BUFFER
IC307
20 8
D302
HP AMP
H1 W1 IC312
13 11 3
2.5V
1 2 11 UNREG
REG
CLK
3 2
D 15
4 L0 9
RST
5 12 3
L1
Q320
Q332 RIPPLE
-3.5V
FILTER
HP VOL
1 PW SW
CONT
Q327,321,322
Q331
S302 HP
16 MUTE
MUTE
13 14 25 25 15 15
15
13 14 25
6 91 12 92
IC505(2/2)
SYSCON/
SERVO/
MECHA CONTROL
– 30 –
J302
LINE
R-CH
OUT
Q312
MUTE
S305
HP IN
R-CH
J303
HP OUT
+3.5V
4
3
2
1
CN302
3 2
2 2 4 4 28 28 23 23 22 22 1
TO/FROM
MD BLOCK
23
2 4 28 22
22 23
• Signal path
d : PB
G :
REC