Sony PCM-R300 Service Manual ▷ View online
– 51 –
1
2
3
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5
6
7
8
OVER CURRENT
PROTECTION
CIRCUIT
OVER CURRENT
PROTECTION
CIRCUIT
OVER HEAT
PROTECTION
CIRCUIT
START
CIRCUIT
REFERENCE
VOLTAGE
CIRCUIT
ERROR
AMP
ERROR
AMP
GND
BALANCE ADJ
OUT(–)
IN(–)
VOLTAGE ADJ
OUT(+)
IN(+)
OUT CONTROL
IC903 M5230L-A
1
2
3
4
5
6
7
8
LOGIC
DOUT/ACK
X DEC
DATA REGISTER
SERIAL MUX
EEPROM
ADDRESS/COUNTER
DATA WORD
LOGIC
CONTROL
SERIAL
LOGIC
STOP
START
H.V.PUMP/TIMING
Y DEC
DOUT
R/W
DIN
INC
LOAD
EN
VCC
TEST
SCL
SDA
NC
NC
NC
GND
IC999 AT24C01A-10SC-TP-B
32 31
30 29 28 27 26 25 24 23 22 21 20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
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33
35
36
37
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38
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42
41
42
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44
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47
48
49
48
49
50
51
51
52 53 54 55 56 57 58 59 60
61 62 63 64
PLM
PLM
CLOCK
GENERATOR
TIMING
CIRCUIT
S/P
MODE
"O" DETECT
MUTE
CIRCUIT
ATT
FIR1
FIR2
FIR3
L. I. P.
(x 8)
IIR
ATT
FIR1
IIR
3RD ORDER
NOISE
SHAPER
FIR2
FIR3
L. I. P.
(x 8)
3RD ORDER
NOISE
SHAPER
AC, DC
DITHER
SYSM
ATT
SHIFT
LATCH
XINT
XDCK
XLRCK
DATA1
VSUD(D)R
DF VSS
VSUB(D)L
INAF
512FS0
256FS0
256FS0
128FS0
I NV1
I NV01
I NV02
MUTE R
VSS2
R2(+)
VSS
VSS
R2(–)
VDD
VDD2
VSUB(A)R
XVSS
XVSS
X IN
X OUT
X OUT
XVDD
VSUB(A)L
VSUB(A)L
VDD2
VDD
VDD
L2(–)
L2(+)
VSS
VSS2
XSEL
SPLM
DFVDD1
DVDDR
VSUB(D)R
VSUB(C)R
VDD2
VDD
R1(–)
VSS
R1(+)
VSS2
201x16
MUTE L
TEST 1
TEST 2
DFVDD2
DV DDL
VSUB(D)L
VSUB(C)L
VDD2
VDD
L1(–)
L1(+)
VSS
VSS2
IC653 CXD8505BQ
– 52 –
• DISPLAY Section
IC802 MSM6338RS
8
7
6
5
4
3
16
15
13
12
11
9
14
2
1
10
15BIT LATCH
0dB OVER
COUNTER
0dB OVER
COUNTER
0dB
OVER
LATCH
L.R
0dB
OVER
DETECTION
CIRCUIT
A
COMP
B
A
≥
B
ABSOLUTE
CIRCUIT
(BI-DIRECTION)
16BIT S.R
CONTROL
CIRCUIT
MAX
REG
(L-CH)
15BIT
LATCH
MAX
REG
(R-CH)
15BIT
LATCH
CONTROL
&
OVER
REG
OUT
REG
REG
16BIT
LATCH
DATA
BUS
BUFFER
READ
WRITE
LOGIC
MPX
WR
WR
CS
CS
RD
WR
CS
RD
RD
VSS
DATA
BCK
LRCK
RESET
DB0
NC
DB1
DB2
DB3
A2
A1
VDD
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