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4.21 PRE/MDA(PRE/REC) SCHEMATIC DIAGRAM
0 4
TO PRE MDA IF
CN401
5
HID3
HID1
PBH
RECH
MONI_CHG
TL3501
TO PRE MDA IF
[Mount TL3501 near the jig connector]
CN401
ENV_OUT
ATFI
4
TO PRE MDA IF
CN401
DUMP_CTL
ATF_GAIN
NOSIG_LV
RECCADJ
TO PRE MDA IF
3
CN401
REC_CTL
VREF_1.1
AGC_OUT
VRB_AGC
VRB_ATF
ATFI
REF_CLK
REC_DATA
REC_CLK
L3501
L3502
2
L3503
L3504
TO PRE MDA IF
CN401
REG_4.8V
REG_3V
REG_2.5V
P/R_GND
NOTE : The parts with marked (
1
A
PRE/MDA(PRE/REC)
R3509
∗
R3510
∗
R3512
R3511
∗
100
C3530
C3528
∗
0.01
IC3502
SN74AHC1G04K-X
NQR0006-001X
10µ
NQR0006-001X
NQR0006-001X
L3505
NQR0006-001X
C3501
C3502
C3503
10
/6.3
10
/6.3
10
/6.3
T
T
T
∗
) is not used.
B
C
C3516
0.047
LOGIC
PB_OUT
C3517
C3527
220p
0.01
AGC_IN
DC Servo
C3518
0.01
AGC_CTL
AGC_DET
C3519
0.001
PB_GND
Typ:-1.3dB
AGC_OUT
LPF
AGC
10dB
10dB
C3520
Typ:7.8dB
0.01
AGC_BUFF_IN
C3521
0.1
REG_1.1V
REG
BIAS
REC
AGC_BUFF_OUT
10.3dB
VRB_AGC
REG
C3522
4.7
MAIN_GND
REC_MONI
ATF_GAIN
C3523
0.01
VCA
VCA_OUT
BPF
10dB
C3524
Typ:24dB
0.01
ATF_IN
BIAS
F.F.
C3525
4.7
VRB_ATF
REG
ATF_OUT
F0 Auto
D
E
4-37
4-38
IC3501
JCY0132
Dumping
HEAD_GND
DX3
X3
30dB
Y3
DY3
HEAD_GND
R3507
240
DX2
TO HEAD
X2
CN402
30dB
Y2
GND[P/R_GND]
R3506
2S
240
DY2
2F
GND[P/R_GND]
GND[P/R_GND]
HEAD_GND
R3505
1S
240
DX1
1F
GND[P/R_GND]
X1
30dB
Y1
R3504
240
DY1
HEAD_GND
F
y20258001a_rev0.1
G
H
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