Ic518 Msm6782-01-Ms (Digital Board); Ic523 M54641L (Digital Board); Ic702 Msm6338Rs (Display Board); Ic703 Sn74Hc174An (Display Board) - Sony PCM-R500 Service Manual

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IC518 MSM6782-01-MS (DIGITAL board)

1
STD.P
DATA
DATA
2
BUFFER
I/O
3
CLK
4
CE
DATA
BCK
TE
L 13942296513
LRCK
RESET
VSS
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CONTROL TIME
REGISTER REGISTER 8
(C , C , C ) (SEC-YEAR, WEEK)
D E F
7
OSC
DECODER
6
ADDRESS
COUNTER
5

IC702 MSM6338RS (DISPLAY board)

1
(BI-DIRECTION)
16BIT S.R
2
3
ABSOLUTE
CIRCUIT
4 15BIT LATCH
WR
5
WR
RD
RD 6
CS
CS 7 A
A≥B
COMP
B
8

IC703 SN74HC174AN (DISPLAY board)

Vcc 6Q
16 15
1
CLEAR 1Q
x ao
y
i
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8

IC523 M54641L (DIGITAL board)

1
VCC
VDD
OUT2 2
XT
XT
IN 1 3
VSS
GND 4
0dB OVER
0dB
0dB
COUNTER
OVER OVER
DETECTION
LATCH
0dB OVER
CIRCUIT L.R
COUNTER
Q Q
3 6 7 1 3
CONTROL
CIRCUIT
MAX
REG
MPX
(L-CH)
15BIT
LATCH
MAX
REG
(R-CH)
15BIT
LATCH
6D 5D 5Q 4D
14 13 12 11
Q D D Q
CK CK
CLEAR
CLEAR
CLEAR CLEAR
CK CK
D Q
Q D
2 3 4 5 6
1D 2D 2Q 3D
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2 9 9 4 2 8
REG
POWER
AMP
INPUT
AMP
CONTROL
INPUT
POWER
AMP
AMP
READ
WRITE
LOGIC
1 5 0 5 8 2 9 9 4
CONTROL
&
OVER
REG
DATA
BUS
BUFFER
OUT
REG
16BIT
LATCH
4Q CLOCK
10 9
D Q
CK
CLEAR
CLEAR
CK
D Q
m
7 8
3Q GND
co
9 9
8 VCC
7 OUT1
6
IN 2
5 REFERENCE
VDD
16
15 A1
14 A2
2 8 9 9
13 DB3
12 DB2
11
DB1
10
NC
9
DB0