Fostex CR200 Service Manual page 80

AUDIO SYSTEM BLOCK DIAGRAM
AUDIO DIGITAL BOARD ASSY
JA801
L ch
INPUT
JA801
R ch
IC8002
VR802 VR801
RELAY
L ch
IC8004
JA8001
BALANCE
RY8004
INPUT
IC8002
IC8001 RELAY
R ch
JA8002
RY8003
REC REC
IC8003
BAL VOL
IC8001
IC8001-IC8004 : VR
NJM5532DD
BOARD ASSY
AES/EBU
IN
IC3001
JA3001
(SN75157P)
INPUT
BOARD ASSY
JA301
1
OPTICAL
IC307 IC312
INPUT 2
(TC74HCU04AF) (TC7S14F)
JA304
2 4 4 4
COAXIAL
INPUT
Q301
LRCK, BCK, DATA
+5V
(DTA114TS)
SW
IC306
(PDC020A)
20
FS
CONVERTER
PLL
COMMAND
REGISTER
IC303
(PCX1021)
+5V
Q302
(DTC124EK)
SERVO UCOM BOARD ASSY
IC803
(NJM4565DD)
1
24 LDTA
7
IC801 IC401
(AK5340-VS) (SM5813AP)
1 2
25 WCKO
A/D DIGITAL
7 27
26 BCK
CONVERTER FILTER
1
28
IC804
23 RDTA
(NJM4565DD)
33 37
CDTX
IC301
(LC89585)
EFM
CLKGEN
ENCODER 48
DIT
DATSEL
DIR FADER
LEVEL
METER
MEMCON
CLKSEL
RAM
CJS
SUBCODE CD ENC
CPU I/F
38
43
1 8
VCO
SW
Q303
(DTA114TS) IC308
(TC74HCU04AF)
STCN2
STCN1
MUTE
IC304
(MB81C4256A-70PJ)
DRAM
IC302
9
PLL (CD74HC4046AM)
VCO
4
5
STRATEGY
EFMIN
85 86 88
DET3T
17.28M
4.32M
STRATEGY
BOARD ASSY
Q403 Q405
(DTA124ES) (DTC124EK)
IC402
( PD2028B(S) )
18 IC404
IC404
2
(NJM5532MD) (NJM5532MD)
DACL
12
2
LDTA
1 DE-
D/A
3 3
WCKO EMPHASIS
CONVERTER
BCK
13
Q411
(2SD2114K)
Q404 Q406
(DTA124ES) (DTC124ES)
IC403
( PD2028B(S) )
Q412
18
2
(2SD2114K)
(2SD2114K)
BCK
12
WCKO 2
1 DE-
D/A
RDTA
3 3 EMPHASIS
CONVERTER
DACR
13 IC405
IC405
(NJM5532MD)
(NJM5532MD)
MUTE
DEEM
Q402
(DTA114ES)
Q413
(DTA124ES)
IC406
(M5218AFP)
IC406
(M5218AFP)
IC307 :
TC74HCU04AF
IC307
IC308 : TC74HCU04AF
IC309 : TC74HC00AF
Q304
(DTC114EK)
IC308
IC308
STRATEGY
CIRCUIT
DACK
DACL
DACR
Q407
(2SD2114K)
JA401
7
ZERO
MUTE L ch
DET.
OUTPUT
Q409
(2SD2114K)
Q410
Q408
(2SD2114K)
JA402
7 ZERO
MUTE
R ch
DET.
OUTPUT
Q401
(DTC124ES)
HEADPHONE
BOARD ASSY
7
JA403
HEADPHONE
OUTPUT
1
VR401
(HP VOL)
JA303
OPTICAL
OUTPUT
IC307
8
IC307
JA302
6
10
COAXIAL
IC307 OUTPUT
12
IC309
3
IC308
IC309
8
IC309
11
IC309
IC308
6