Sony MDR-NC6 Service Manual page 6

MDR-NC6
• See page 4 for Waveforms
4-2. SCHEMATIC DIAGRAM BOARD
-B
DRY BATTERY
SIZE"AAA"
(IEC DESIGNATION R03)
1PC. 1.5V +B
• TOTAL CURRENT
10 - 15 mA
S1
(POWER)
ON
OFF
MDR-NC6
P1
L-AUDIO
R-AUDIO
GND
4 +VCC
+B
GND
R-AUDIO
1
4 1
R39 R40 R41 R42
100 10k 10k 10k
C30
3300p
-1 -2
C31 Q16
3300p FMA4
LED DRIVE
C33
0.1
-1 -2
Q15
FMW1
C32 D1
OSC 0.047 L-1034ID
POWER
+1.1V REGULATOR
IC3
S-817B11AMC
CWA-T2
R43
0
I O
G
C29
100
4V
R3
150k
C36
R1
100
18
4V
C35 C3
R44 R11
10 47
220 6.8k
16V 4V
R5
2.2
Q5 Q7
DTC323TK DTC323TK
R7 C27
18k 0.047
Q1,3,5,7
R9
SWITCHING
10k
Q1 Q3
DTC343TK DTC343TK
C15
47
4V
R4
150k
R2
18
R45
220
C4
R12
47
6.8k
4V
R6
2.2
Q6 Q8 R8
DTC323TK DTC323TK 18k 0.047
Q2,4,6,8
SWITCHING
Q2 Q4
DTC343TK DTC343TK
C34 C16
10 47
16V 4V
6 6
POWER AMP
C1 IC1
Q11
10 NJM2076
2SA1182
16V
AMP
R13
2.2
Q9 R15
2SA1182 2.2
AMP
R17 R19 R21
2.2 2.2 2.2
C9
C5 C7
100
0.47 0.47
4V
R27
470
C25 R35 C21
4.7 6.3V 5.6k 0.022
R33 C17
470k 4.7
6.3V
C19
R31 4.7
100 6.3V
SFR1
Q13
10K
2SC2412
BUFFER
R37 C23 R29
1k 0.015 680
POWER AMP
C2 IC2
Q12
10 NJM2076
2SA1182
16V
AMP
R14
2.2
Q10 R16
2SA1182 2.2
AMP
R18 R20 R22
2.2 2.2 2.2
C10
C6 C8
100
0.47 0.47
4V
R28
470
C28 C26 R36 C22
4.7 6.3V 5.6k 0.022
R10 R34 C18
10k 470k C20 4.7
R32 4.7 6.3V
100 6.3V
SFR2
Q14
10K
2SC2412
BUFFER
R38 C24 R30
1k 0.015 680
SP1
(L-CH)
R23
2.2
C11
100
4V
R25
1.5k
MIC1
(L-CH)
C13
47
4V
SP2
(R-CH)
R24
2.2
C12
100
4V
R26
1.5k
MIC2
(R-CH)
C14
47
4V