Sharp CD-C290X Service Manual page 24

CD-C290X
A
TO MAIN PWB(2/3)
P27 12-C
B
SO401
VIDEO/AUX
RIGHT
C
LEFT
D
CNS704
2
TO DISPLAY PWB
3
P31 9-G
4
E
TAPE1
PLAYBACK
HEAD
R-CH
F
L-CH
ERASE HEAD
R-CH
G
L-CH
TAPE2
RECORD/
PLAYBACK HEAD
TAPE MECHANISM
ASSEMBLY
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 12.
1
CD_R
15
16
A_GND
CD_L
17
1
2
3
4
C411
390P
BIAS
T1_T2
REC
C581
0.047
R581
10K
Q581
KTA1266 GR
C502
0.001
1 1
TAPE1_R
2 2
A_GND
3 3
TAPE1_L
Q514
C501
KTC3200 GR
0.001
R514
2.2K
C512
R512
180P
1 1 3.3K
M_GND
2 ERASE 2
Q512
3 TAPE2_R2 3
KTC3200 GR
4 A_GND 4
5 TAPE2_R1 5
6 TAPE2_L1 6
R511
7 TAPE2_L2 7
3.3K
R513
2.2K
Q513
KTC3200 GR
2 3
Figure 24 SCHEMATIC DIAGRAM (2/11)
R418
15K
C402
0.047
R402
(ML)
1K
33
C404 R404
0.047 1K
32 R3
(ML)
31
NC
C406
30
R2
0.047
R406
29
NC
(ML)
1K
28
R1
C408
R408
27
AVSS
0.047 (ML)
1K
26 VSS
R425 1K
25 CE
R426 1K
24 DI
R427 1K
23 CL
C407 R407
22 VSS
0.047 (ML)
1K
21 L1
C405
R405
20 NC
0.047 (ML)
1K
19 L2
C403
18 NC
0.047 (ML) R403
17 L3
1K
16
R401
C401
1K
0.047
(ML)
Q582
R582 KRC104 M
10K
2 3
1
3
2
Q583
R584
KRC104 M
10K
R502
1K
R501
1K
R520
1K
C504
330P
C503 330P
R510
10K
4
– 24 –
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
RINVIN2
RTOUT
RVRIN
RTEST
IC401
RVROUT
LC75394E
AUDIO PROCESSOR
LVROUT
LTEST
LVRIN
LTOUT
LINVIN2
LVref
9 8 7 6 5 4 3 2 1
15 14 13 12 11 10
OUT_L
Q584
KTC3199 GR
R585
2.2K
C583
22/16
C534
R536
C536
0.033
56 (ML)
560P
R538
R532
5.6K
100K
C520
330P
C540
1/50
24 23 22 21 20 19
–
+
112K
Hich=T1
112K
+ –
1 2 3 4 5 6
R531
100K
R533
3.9K
R537
C533
0.033 5.6K
(ML)
R535
56
5
C442
0.0027 C448
R420
49
RFS 22/16
100K
50
RVref
C444
51
R453
100P
52
1.2K
C446
53
10/16
54
C450
55
100/1
Vref 56
C449
VDD 57
22/16
58
59
C445
60
10/16
61
C443
62
100P
63
C447
LFS 64
22/16
C441
0.0027
R421
100K
GND
REC_R
R578
100K
Q576
KTC3199 GR
R576
10K
R552
KTC
4.7K
R554
6.8K
C556
22/16
18 17 16 15
–
+
56K
Hich=CHROME
56K
+
–
7 8 9
10
6