Sharp CD-MD3000H Service Manual page 63

JK501
AUX
INPUT
L-CH R-CH
R549
39K
CHASSIS
GND
C540
C541
390P 390P
L501
L502
2.2µH 2.2µH
R547
R548
2.2K 2.2K
C573 C574
2.2/50
2.2/50
R591 R592
47K 47K
R507
22K
C503
22/50
3
0V
1
2.6V
C597
C598
0.0027 2
2.6V
0.0027
R503
SWITCHING
2.2K
R504
C501 C502
2.2K
0.001
0.001
0.7V 0.7V
0V 0V 0V 0V
Q502
Q501
KTC3199 GR
KTC3199 GR
SYSTEM MUTE
R501
330
+B
a b c d e
TO MICROCOMPUTER SECTION
P56 6-H
7
+B
R544
R543
47K
47K
+B
24 23 22 21 20 19 18 17 16
IC502
LC75341
1 2 3 4 5 6 7 8 9
C563
10/50
R529
3.9K
C564
0.1
R527
2.2K
CD/MD
5 3 6 9 12 10 13 2
(7.6V)
14
(-6V)
7
IC501
(0V) 11
4 8 1
(0V) (0V) (0V) BU4066BCF
R514
1.2K INPUT
SELECTOR
R513
1.2K
g
h
i
TO MICROCOMPUTER SECTION
P56 4-H
8 9
Figure 63 SCHEMATIC DIAGRAM (10/16)
TO TUNER SECTION
CD-MD3000H: P54 1-F
CD-MD3000W: P55 7-F
L M N K H E G F I J
+B
R536
47K
R552
47K
15 14 13
C550
22/50
R542
1.5K
C551
22/50
10 11 12
C535
0.1
C527
1/50
R551
47K
R535
47K
R515
4.7K
(-6V) 2
1
Q504
KRC107 M (-6V)
3
(6V)
R517
R516
1K
47K
(7.6V) 2
1
Q503
(7.6V)
KRA107 M
3
(0V)
2 1
TO MICROCOMPUTER SECTION
P57 10-H
10
– 63 –
CD-MD3000H/CD-MD3000W
MAIN PWB-A1 (2/3)
FM SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
CD SIGNAL
MD SIGNAL
S-MUTE
+B
R538
1K
C537
0.1
-B
C536
10/50
C532
100P(CH)
C534
47P
R540
(CH)
10K
2
0V
0V 8.2V
4
0V
5
+
1
7
–
6
3.6V
0V 3
0V
IC503
R541 +B
8
1.5K 0V
10V
2
–
1
+ 3.6V 3
3
0V
1
0V
0V
R539
C533
0V 2
10K
47P
(CH)
C531
IC503
100P(CH)
NJM4558M
OPE AMP.
+B
R537 C530
1K 10/50
R523
330
R522
330
-B
f
j
TO MICROCOMPUTER SECTION
P57 10-H
11
X VSM
C2B_DO
W
C2B_CE
V
C2B_DI
U
T C2B_CL
S D_GND
R S-MUTE
CD-R_SEL
Q
PB_MUTE
O
C566
22/50
R582
22K
k l m n
12