3-12
BVW-55
3-12
DM-121 (2/3)
Block diagram
RF DEMODULATOR, TBC
DM-121 (2/3)
LOT NO. 812-
Block diagram
DM-121 (2/3)
Y DM
FROM(1/3)
IC505(2/3)
CN101/100
16
L:SLOW BID
IC500,501
H:-1 TO +3 TIMES
IC504
17
CN101/100
SV TAPE SPEED
INTEGRAL
IC910,911
AMP
AMP
IC503(2/2)
AMP
IC503(1/2)
TBC SPEED
SPEED
TP508
RV501
Y DM
TP502
2FC ELIMINATE LPF
Q507,509
LPF
Q506
LPF
SEARCH
H:+18 TIMES
TP503
Y PRE
CLAMP
METAL
LPF
Q516,518
Y CLAMP
TP504
Y W CLP PLS
RV503
IC511
RV504
Y MAIN
TP505
IC508(2/2)
DEEMPHASIS
NON-LIN
TP506
Y NLDE
TO(3/3)
Q515,517
FROM(1/3)
C DM
TP702
C DM
IC702(2/3)
Q704,705
2FC ELIMINATE LPF
LPF
C PRE
C CLAMP
TP704
CLAMP
TP703
RV701
Q714,715
C W CLP PLS
TP706
TP705
TO(3/3)
IC705
RV704
C MAIN
IC703(2/2)
C NLDE
H:METAL/L:OXIDE
DM CS
76
IC909
DM
SYIF2 CMD,SCK
SYIF2 RES,RDY
MPU
IC908
L:METAL/H:OXIDE
H:METAL/L:OXIDE
H:+18 TIMES
H:SEARCH SW LOW H:SEARCH TUNE 6M
H:SEARCH SW MID H:SEARCH TUNE 14M
H:SEARCH SW FLAT
IC905,906
Y COS1 CONT
Y MAIN CONT
Y SUB CONT
Y DO THRESHOLD
Y OMC CONT
NON-LIN
DEEMPHASIS
IC505(3/3)
SY-272,42-16
SV-206,303-11
SV-206,303-4
RV505
SPD
OFFSET
RV506
SPD
GAIN
RV502
Y DEM
BAL
Y DM(RF)
DEEMPHASIS DC
C DM(RF)
RV702
C DEM
BAL
DEEMPHASIS DC
Y DEMOD
C DEMOD
RV703
C METAL
LEVEL
RV704
C OXIDE LEVEL
Y METAL
LEVEL
IC907
H:ANA PB
Y RF ENV
C RF ENV
L:Y DOP
ADV C SW PLS
IC702(3/3)
IC703(1/2)
IC508(1/2)
H:VIDEO EE
4
4
EVR
IC901,903
NV-RAM
CN101/100
Q903
BUFF
Q510,511
THROUGH
BUFF
(INV)
Q706-710
FL504
OXIDE
LPF
FL503
FL703
MIX
Q512,513
CLAMP
ERROR
DET
IC512,Q514
Q711,712
MIX
IC704,Q713
DET
ERROR
CLAMP
Y DELAY CONT CH
FL702
FL502
LPF
NOISE
CANCELER
IC706
Q520,522-526
CANCELER
NOISE
Y OXIDE
LEVEL
C OMC CONT
C DO THRESHOLD
C SUB CONT
C MAIN CONT
C COS1 CONT
C DELAY CONT CH
IC513
Summary of Contents for BVW-55
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