Schematic Diagram - L-Ch Section - Sony MDR-NC60 Service Manual

MDR-NC60
4-3. SCHEMATIC DIAGRAM – L-CH Section –
TP901
TP902
TP903
TP904
TP905
1
TP906
TP907
TP909
TP908
4
TP910
MIC1
TP911
(MONITOR)
TP913
MIC2
TP914
(NOISE DETECT)
MDR-NC60
• See page 14 for Waveform. • See page 14 for IC Block Diagrams.
R26 R28 C22
16k 16k 4700p
R27 R29 C24
3.3k 22k 0.1
R57
0 C21
0.022
VCC
BUFFER
R60
4.7k IC3
NJM2732RB1
NJM2732RB1
GND
R23 R56
10k 0
R24
100k
C18 R22 C20
0.1 330k 0.22
R68
C63 330k
22 C61 C16
6.3V 0.01 0.1
R25 C17 C19
10k 0.047 0.047
TP2 TP3
JW2
0
TP015
DC/DC CONVERTER
IC52
LTC3526B
JW3 L51 L52
0 2.2µH
SW
V-OUT
GND
FB
C56
220 V-IN C59
4V SHDN 33p
R54 R4
1M 2.7k
C55 C57 R55 C58
0.01 1 1M 10
C4
4700p
R3
0
R35 R36 R37
10k 47k 10k
R65
0
C28 R58
C29
0.01 0
0.047
R41 C33
470k 0.01
VCC VCC
BUFFER MONITOR SWITCH
IC5
IC4
SN74LVC1G3157
GND
GND
R59 R40 JW1 C31
TP6 TP7
0 0 0 2.2
R30
2.7k
R32
1.5k
R31 C26 R39 C35
100k 0.01 0 C36 0.1 R42
C30 0.022 100k
2200p
C25 R33
0.033 820
R38
R34 C27 56k
560 0.033
R72 2.7k
C74 0.1 R73 6.8k
R1 C8
4.7k 1
C13
0.1
S
C73
0.47
Q3
3LN01S-TL
MUTING
VIN VOUT
+2V REGULATOR
GND
IC1 CONT NP
TK70520SCL-G
R74
2.2k
C15
C7 0.1
1
C12 R75
10 2.2k
C5
4700p
16 16
C38
10
6.3V
C45 C39
0.033 0.1
R46
22k
POWER AMP
IC6
LM4916LDX/NOPB
RV2
22k
AMP
GAIN
R43
2.2k
D42 1SS400TE
R10
4.7k
R45 47k
C37 R69
2.2 10k
C11 D41 1SS400TE
0.047
R44 47k
R61
10k
R62 C40 C41 C42
220k 4.7 0.1 1
R9
10k
C46
0.022
R11 R21 R14
22k 18 22
D1 1SS400TE
D2 1SS400TE
R16
R12 4.7k
4.7k
47k
-2-1
Q1
IMX9
VCC
MIC AMP
IC2
NJM2732RB1
GND
RV1
22k
CANCELING
GAIN
R13 C14
47k 10
6.3V
R63
4.7
TP915
SP1
TP916
(L-CH)
R64
4.7
C43 C44
R47 R48
220 220
22k 22k
4V 4V
R49 R50
4.7 4.7
TP5
C48 R15
1 10
R17 R18 R19
4.7k 4.7k
-2-1
Q2
IMX9
Q1,2
SWITCH