Kenwood LD-K300V Service Manual page 8

K L
C501 R505 15K R503
0.1 15K
R504 C502
47 27P
C512 C505
5P 10P
L16 L17 C514
0.047
120uH 120uH
+5V
4.9V
C508
100u10
-5V
+
0V
C231 1200P R351
0V 0V
470K -5.1V
R354
4.7K
R355
47K 0V 1
FCD
2 48
CLVO
FEI
0.9V
0V 1.1V
3 47
HFI LVE
0V
4 46
TESI LVG
45
LVO
0V 5
44
DFI
SPCD
0V 6 43
TE SPLD
7
TEI
R360 82K
8
TEL
R364 47K 9 42
IC23
TCD SPO
R365 68K
10 41
TLD PA-
SERVO/AUDIO
40
RF AMP
PAO
C239 4700P 11 39
THI PAC
12 38
0V
TAN PWM
R367 27K 13 37
TAS F/R
C240
36
SGND
330P 14 35
TAO V/A
4.9V
C242 0.1
15 34
THD CLK
R369 10K 16 0V 0.2V 33
TO LF
C246
5600P
HIL SIGNAL
R514 22K
MUTE
R513 33K
2.5V
Q43 D14
R511 22K
-14V
+5V
C257 10P D19
0V R375
2 1K
R317 100K
3.5V
3
SERVO ERROR
1
COMPARATOR
-1.3V
1.3V
R318
IC9
2.5V 0V 100K 6
2 (3/7)
-
7
Q71 5 6
C254 5 3
+
22P 1
C252
470P 0V
0V
IC22
IC9
(2/2) D23
(4/7)
INVERTER 9
-5V -5V
+14V +14V
M N
+5V
R383
1K
SWITCH LD
(SPINDLE)
R399 R400
4.7K 22K
54
2.7V
+
SWITCH
Q40
(SPINDLE GAIN)
2.9V
R404
100K
0V
55
L28
2.9V 1
Q41
L OUT
2.5V
2
GND
3
L IN
2.9V
4
R IN
2.4V
5
GND
2.5V
6
R OUT
B.P.F
2.4V
R420 R422
2.5V
4.7K 1.2
2.8V 56
2.9V
2.2V
C296
4.6V
10u16
-5V
+
R427 R428 R430
470K 1M 100K
R435
53
100K
57
58
-14V
+5V +5V
5.0V
IC9
(2/7) 4.2V
4 3 0V
INVERTER
Q63
IC19
5.0V
D-FLIP
FLOP IC9(4/7~6/7)
IC9
8 0V OSC
(7/7)
14
1 2
7
O P
-5V
+5V
R540 C569
220K 0.1
IC26
FM AUDIO
DEMODULATION R535
C548 R543
0.1 220K
15K
-2.6V 5.0V 0V
0V
-2.8V 0V R542 -1.9V
150K
VCC
0V 0V
DOS1 OR STRETCH
DELAY DOS2
TBC
ALC ERROR
CORR.
DELAY DOS2
DOS1 OR STRETCH
-5.2V
0V 0V
GND
-1.9V
R536
-2.6V
15K
-14V
+5V
5.0V
8
D21
0V 2
- 1 -5.1V 1 R331
3
100K
+
C243
R323 2
10u25 ( 7 ) 3
IC16
22K 1.3V
(1/2)
C226 1u50
COMPARATOR
R324 220K
R345
-5.1V
2.2K
0V 0V
IC12
IC16
2
(2/2)
D22
(2/2)
- 6
0V 3 - 7 1 R334
+ 1
5
100K
+
4
2
-5.2V 0V -5.2V
0V 4 ( 8 ) 3
R344 -1.3V
180K
-5V
C215
AMP 0.01
0V
IC35(2/4)
+
L
12
14 SWITCH
13
0V (SULDFD
H
ERROR
0V
R343 AMP GAIN)
680K 11
+5V
-5V -5V
+14V +14V
Q R
-5V -5V
+5V +5V
35
12
13 13
0V
0V
1
VPDO
2
C519 R516 PDO2
0.1 680
1.6V 3
PDO1
4
AVSS
R517 1.2K
0.4V 5
FR
5.0V 6
+5V AVDD
C520 0.1 1.7V 7
ISET
C521 0.01
8
TAI
R518 56K
9
EFMO
10
VSS
2.6V 11
EFMI
12
TEST1
0V
1.2V 13
( )
13 CLV+
10
0V 14
( 14 ) CLV-
9
15
8 V/P
16
TEST2
17
TEST3
18
0.2V 19
( 19 ) HFL
2.5V 20
( 20 ) TES
21
PCK
0V 22
FSEQ
23
( )
23 TOFF
24
( 24 ) TGL
5.0V
( )
25
-14V -14V
+5V
-14V
R347
2.7K
0V
-14.1V
TITL/LOADING
MOTOR DRIVER
0V
-14V
IC22
0V
6 5 R336 (1/2)
5.6
+ 8
7
AMP
-
IC14
9
0V
(2/2)
R337
0V 5.6
R335 82K
0V
C228 100P
4
SLIDER/SERVO
9
GAIN SEL 5.0V
-0.5V
R340
H 3 5 L 33K
2
IC35(1/4)
D26
Q70 0V
+5V +5V
-5V -5V
+14V +14V
-14V
S T
+5V
4.9V
5.0V
R575 Q53
100K Q57
4.9V
A MUTE
0.5V DRIVE
INVETER
R574
100K
C524
0.01
R525
10K
2.1V
4.8V
4.9V 0V
2.5V
IC24
D.S.P
5.0V
5.0V
0V 0V
+5V
5.0V
Q69
SWITCH
-14.2V 0V
MUTE
R348
10K
4 2 4.3V
1 -
3
+
8 R349
10K
0V +
C259
0.01