– 29 –
IC501
D/A CONVERTER (MASTER)
AD/DA BOARD
BLOCK DIAGRAM OF AD/DA BOARD (2/2)
R502-R535
Q501,D501
Q651,D660
Q502,D502
Q652,D661
IC503A
IC504A
Q503
CN501
CN58
CN99
Q504
IC506A
IC504B
L.P.F.
IC506B
L.P.F.
IC508
IC507
IC503B
+14.5V
B.P.F.
SFMUTE
/MUTE
(–8.4 dB)
(–0.3 dB)
Σ
(–7.1 dB)
MASTER OUTPUT (L)
(+4 dB
µ
)
CN502
MASTER OUTPUT (R)
(+4 dB
µ
)
JK503
RECORD OUTPUT (L)
(+4 dB
µ
)
JK655
CN52
RECORD INPUT B (L)
(+4 dB
µ
)
JK656
RECORD INPUT B (R)
(+4 dB
µ
)
JK504
RECORD OUTPUT (R)
(+4 dB
µ
)
(–8.4 dB)
(–0.3 dB)
Σ
(–7.1 dB)
+5D
LVDD
75
VDD
,,,,,,,,,,,,,,,,,,,,,,
73
+14.5V
RVDD
LMUTE
6
7
1
+
–
3
2
2
1
fs
,,,,,,,,,,,,,,,,,,,,,,
65
LRCK
MLR
,,,,,,,,,,,,,,,,,,,,,,
64
SD
/RST
,,,,,,,,,,,,,,,,,,,,,,
53
/RSTB
64fs
,,,,,,,,,,,,,,,,,,,,,,
66
BCK
256fs
,,,
,
,,
157
L
R
CKFFL
61
X0
126
CKFFR
RMUTE
R-NETWORK
6
2
3
1
3,6
3,6
7
R540-R573
IC505A
IC505B
/MUTE
6
7
1
+
–
3
2
2
1
R-NETWORK
REGULATOR
REGULATOR
REGULATOR
REGULATOR
6
7
1
7
1
7
IC510
IC509
3,6
3,6
1
7
1
7
2
3
1
JK501
MONITOR B OUTPUT (L)
(+4 dB
µ
)
JK502
MONITOR B OUTPUT (R)
(+4 dB
µ
)
2
3
1
IC670
IC669
3,6
3,6
1
7
1
7
2
3
1
2
3
1
IC651
D/A CONVERTER (MONITOR A)
R652-R685
IC653A
IC654A
Q700
Q701
IC658A
IC654B
L.P.F.
IC658B
L.P.F.
IC653B
+14.5V
+14.5V
–14.5V
+5D
+5A
+14.5V
–14.5V
TB
B.P.F.
SFMUTE
/MUTE
(–8.4 dB)
(–0.3 dB)
Σ
(–7.1 dB)
(–8.4 dB)
(–5.4 dB)
(–0.3 dB)
Σ
(–7.1 dB)
+5D
LVDD
75
VDD
,,,,,,,,,,,,,,,,,,,,,,
73
+14.5V
/2TRB
RVDD
D2
D1
D3
D4
/IN1 - /IN4
15
3,14
S1,S2
11,6
S3,S4
2
10
4
1,16,9,8
D2
D1
D3
D4
/IN1 - /IN4
15
3
14
S1,S2
11
6
S3,S4
2
10
4
1,16,9,8
LMUTE
6
7
1
+
–
3
2
2
1
fs
,,,,,,,,,,,,,,,,,,,,,,
65
LRCK
MNALR
,,,,,,,,,,,,,,,,,,,,,,
64
SD
/RST
,,,,,,,,,,,,,,,,,,,,,,
53
/RSTB
64fs
,,,,,,,,,,,,,,,,,,,,,,
66
BCK
256fs
,,,
,
,,
157
L
R
CKFFL
61
X0
126
CKFFR
RMUTE
R-NETWORK
6
7
R690-R723
IC660
SELECTOR
IC657A
IC657B
/MUTE
6
7
1
+
–
3
2
2
1
R-NETWORK
6
7
IC663
D/A CONVERTER (MONITOR B)
IC664A
IC664B
IC672A
IC672B
SFMUTE
,,,,,,,,,,,,,,,,,,,,,,
9
SMUTE
1
–
+
2
3
fs
,,,,,,,,,,,,,,,,,,,,,,
8
LRCK
MNBLR
,,,,,,,,,,,,,,,,,,,,,,
7
SDATA
18
19
16
17
/RST
,,,,,,,,,,,,,,,,,,,,,,
5
/PD
64fs
,,,,,,,,,,,,,,,,,,,,,,
6
BICK
256fs
,,,,,,
4
AOUTL+
AOUTL–
AOUTR+
AOUTR–
MCLK
2
1
IC665A
1
+
–
3
2
2
3
1
(–5.4 dB)
IC665B
7
+
–
5
6
7
–
+
6
5
6
7
IC655A
IC655B
2
1
6
7
IC671
SELECTOR
1
2
3
4
5
6
7
8
MUTE
DMR
MONIALS
MONIALR
MONIALG
MONIARS
MONIARR
MONIARG
1
2
3
4
5
6
7
8
9
10
MONIBLS
MONIBLR
MONIBLG
MONIBRS
MONIBRR
MONIBRG
TB
TB GND
+14.5V
–14.5V
1
2
3
4
5
6
7
8
9
10
11
12
13
+5A
+5A
+5A
AG
AG
+14.5V
+14.5V
–14.5V
–14.5V
AG
AG
+5D
DG
JK501
To
Monitor VR Board
. . . . . . . . . . CN58
To
Power-2 Board
. . CN52
To
Monitor VR Board
. . . . . . . . . . CN99
MONITOR A OUTPUT (L)
(+4 dB
µ
)
JK502
MONITOR A OUTPUT (R)
(+4 dB
µ
)
2
3
1
IC668
IC667
3,6
3,6
1
7
1
7
2
3
1
