JVC KD-S21 Service Manual page 38

QQ
3 7 63 1515 0
CD servo control section
TE
L 13942296513
www
2-5
http://www.xiaoyu163.com
QGB2027M4-22S
FEED-
FEED-
FEED+
GND
FEED+
VF2
GND
VCC
PSW
SW1
SPINDLE- VT2
SPINDLE+ SW2
VT1
PSW
VF1
SPINDLE-
VR VR
SW1
SPINDLE+
SW2
LD
VREF
FOCUS-
TRACKING-
MD
TRACKING+
FOCUS+
FOCUS+
TRACKING-
FOCUS-
TRACKING+
LD
GND
MD
VR
VF1
VREF
VT1
GND
VT2
VCC
VF2
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y
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http://www.xiaoyu163.com
8
R553
R554
LM
51k
0
CN501
FEED-
FEED+
VF2
VCC
Q Q
SW1
3 6 7 1 3
VT2
SW2
VT1
PSW
VF1
R557 SPINDLE+
150
SPINDLE-
LD
FOCUS-
MD
FOCUS+
TRACKING-
TRACKING+
R512
VT2
47k
R513
VT1
47k
VF2
VF1
IC501
AN22002A-W
MD
Q501
R526
2SA2093/QR/-T
LD
12 C527
0.022
u163
.
2 9 9 4 2 8
C541
C545
47/6.3
0.01
C543
0.033
C540
68p
R558
10k
Q541
2SA2093/QR/-T
R550
12k
1 5 0 5 8 2 9 9 4
C522 TP
0.022
FE
C523
0.047
TE
0.022
TP
R509
39k
C521 C520
270p 100p
C526
3p
R524
3.3k
RF TP
m
C506
R525
1.5k
68p
co
9 9
D551
1A3G-T1
KI
TR
C546 68p
270k
R547
R548 5.6k
2 8 9 9
VREF
TP
C519