Kenwood LD-K300V Service Manual page 7

A B
MECHA ASS'Y (X92-1621-01)
TILT SENSOR
PICKUP(V-SF1B)
1
TILT LED
(X93-1000-03)
TILT PD IN
TILT PD OUT
TRACKING
COIL
- +
-
OBJECTIVE
LENS
+ OPIC
E
FOCUS (PD)
COIL
A D
B C
2
F
LD
RF
PD VCC
PD VEE
3
(X25- )(A/2) (X25-5020-01) (B/2)
WH1 WH1
FG SENSOR
FG BI
1 1
GND
2 2
FG OUT
3 3
PH1
PH1: T95-0048-05
S2
M M
( SLDMO ) SLT
A
(LD)
4
SLIDER SPINDLE
MOTOR MOTOR
( SLDRTN )
B
MECHA ASS'Y (BLACK:X92-1680-91) (GOLD:X92-1681-01)
(X25- ) (F/6)
(X25- ) (E/6)
WH4
TILTOUT 1
WH5
1 1
TILTB
+5V 2
2 2
GND
CLOSE OPEN
3 TILTOUT 3
5 CLOSESW 3
E4 E5
C OPENSW 4
S32
GND 5
LDRTN
LDRTN 6 2
LDMO
M
LDMO 7 1
CN2
IC9 : TC74HCU04AF D11,14,15,20,26
IC10,12,13,22 : NJM4565M D13,19
IC11 : LA9425 D21~23,37
IC14,15 : TA8410AK D24,25,2738,39,607
IC16 : NJM2903 D29,30,36
6
IC19 : TC74HC74AF D31~34
IC23 : LA9420MKMT or LA9420M D35
IC24 : LC7830E
IC26 : CA0002AM
IC30 : NJM2058M
IC35 : TC4053BF
Q20-22,26,42,43,46,52,53,55,56,60,62,63,66,70,71,74,76
: UN5212 or DTC124EUA
Q23,40,41,48,50,51,54,58,59
: 2SC4081(R,S)
Q27,67 : 2SK163(L,M):
Q28 : 2SC3311A(Q,R) or 2SC2458(Y,GR)
Q30,61,68 : UN5112 or DTA124EUA
Q31 : UN5112 or DTC124EUA
Q47,57,69 : 2SA1576(R,S)
7
C D
(X34-1033-00) (1/2)
CN3
TE1 1 1
TE2 2 2
1 LED GND 3
2 PD IN
R357 100
FE2 4
3 PD OUT
FE1 5
4 RF GND
1K(B)
RF(EFM) 6 6
5 VR
6 D
7 RF GND
F 7
TILT BAL
E 8
8
LD
+5V
VR3
100K
3.8V
R286
9 A
390K
10 D
2.0V
11 C
12 B
CN1
R285
390
13 NC
LED 1
14 F PD IN 2
15 E PD OUT 3
16 GND 4
RF GND
R202
VR 5
17 RF
100
PD 6
18 VCC
GND 7
19 NC
LD 8
20 VEE
A 9
21 T MO
D 10
22 F MO
C 11
23 F RTN
B 12
24 T RTN
NC 13 TE BAL
F 14
VR1 22K
E 15
GND 16
R205
330
+
RF 17
WH2
VCC 18
6 FG OUT
GND 19
5 GND
+
4 FG BI
3 LD SW
VEE 20
2 CD SW
TRTN 21 21
S1
1 GND
FMO 22 22
SLT
(CD)
FRTN 23 23
TMO 24 24
+5V
R238
470 AMP
(FG SIGNAL)
0V
+
CN2 C202 0V
PH1
1u50
CD SW 1
R210
LD SW 2
18K
FG BI 3
u-COM G 4
FG OUT 5
-5V
PHOTO
INTERRUPTOR
PH1 :T95-0108-15
LOADING
MOTOR
Q23
R322
22K
Q22
INVERTER
: 1SS33 or HSS104
: DA204U
: DAN202U
: MA110
INVERTER
: DAP202U
(LD SW
: S5688B or 1SRB9-400 SIGNAL)
: 1SV101
SIGNAL LINE
GND LINE
+B +B LINE
-B LINE
-B
E F
+5V +5V
-5V -5V
IC11
RF-AMP
1 0V
+
-
+
FE BAL
R213
100
2 0V
3.1V
Q29
LASER -
VR2
DIODE 47K 3 0V +
DRIVE
R288
-5.2V
R290 220K
VEE -
220K
C207 +
100u10 4 VEE
+
5 -5.0V
R221 82K
R291
C212 68P 1M
6 3.2V
R222 33K
C203
0.01
R223 68K 7
R224 33K
+
R225 68K -
8
9
10
11
RF SIGNAL
BUFFER
5.0V
R233
Q28 3.3K
R204
220
0.9V
12
0.3V
+5V +5V
C237 0.01
5.0V
5.0V
AMP -2.6V
-0.5V
R293
5 8
D13
+ 7 2 8
1K 6 - 1 2
-
0V -1.3V 3
+
1
IC13
IC12 (1/2)
0.6V (1/2)
-0.4V
C209 0.1 6
- 7
4.7V
5
R263 100K +
R237
IC13
5.6K 4
C210 R264 (2/2)
22u50 15K -5.2V
COMPARATOR
+
1.3V
IC35
6 8
- 7 (3/4)
5
+
IC10
L2
4
(2/2) 15
R242 H1
100K
0.7V
-0.5V 10
C287
0.01
-5.2V
D11
Q64-66
SWITCH
(LOADING
MOTOR CONTROL)
-5V
R272 R277 Q66
R278 56K 120K
5.0V 0V
68K
Q65
0V
Q64
-5.2V
+5V
0V
5.0V
INVERTER
Q60
SWITCH
(LOADING) Q55
R276
Q60
47K
R275
5.0V
47K
4.9V
+5V
-5V
Q55
SWITCH
DEEMPH
G H
R591 10
+5V
1/4W
-5.2V
-5V -5V
+5V
5.0V
-0.1V
24
16 7
IC35
-0.1V 23
(4/4)
8 6
0V 22
CD LD R258
GND 21
2.2K
0V
LD/CD
0V
2 R259
+ C244
- 1 1K
1u50
-
3
+
IC10
0V
(1/2)
+ 20 0V
AMP
-
4D(FSUM)
SIGNAL
19 0V
-2.0V
18 +
C208
0.47u50
AGC
HFI INPUT
FIL,SEL
17 -2.0V
+
-
C211
100u10
TRADKING MOTOR DRIVE
+ 16 0V
+
-
R298
15 5.0V
1.2
+5V
VCC
14 0V R299
1.2
( )
13 0V 24
IC15
(2/2)
+5V
R280
( 21 )
220K
0V R281
SLIDER
-0.5V
2.2
R297
MOTOR
R274
4.7
100K R282 DRIVER
3 3 1
2.2
- 2
4
+
-0.5V
10 IC14
0V
(1/2)
14.2V
R315
+14V +14V
C285 10K
0.01 +5V
C213 R284 R283
0.1 22 22
MUTE FET
ON/OFF
CONTROL
1
3
5.0V
R385
4.7K
0.7V
+5V
R319
0.7V
Q21,52
4.7K
INVERTER
R308 1.2
4.4V
( 22 )
-5.2V Q52 R307 1.2
R306
D36 4.7
-5.2V -5.2V
( 23 )
D37
Q54
Q21
-5.2V
R320
0V
10K
0V
+14V
R380
680K
+5V
-5V
+14V
I J
+5V
LD FEM
+
RF AMP
Q51
3.8V
2.4V
R501 0.3V
C515 Q50
47P
220
ANALOG RF
-0.4V
SIGNAL AMP
-3.4V
R502
2.2K
-4.0V
-5V
FE GAIN
( 6 )
C232
0.1
C233
0.01 R356 10K
R359 C234 0.033
C235
10K
100P
SWITCH R361
C236 0.47u50
100
(VIA TRK GAIN SEL) VR5 10K
0V
Q74
Q42
Q31
C238
TRK
5.0V
0.068
GAIN
C247 R358
0.068 33K
C249 R363
SWITCH
(VIA EQ SEL) 6800P 10K
-14.1V
0V -14V
5
0V
7
8
6
R362
0V
0V 47K
9
Q27
+
0V
0V
-4.5V
0V
TRK
R296 C222
4.7 0.1 DRIVE
MUTE
R313
220K
+5V
0V
Q30
Q20
4.7V
Q62
FOCUS MOTOR
DRIVE
IC15
0V
(1/2)
R312
1
IC9(1/7~3/7)
12K
3
2
INVERTER
4
-4.6V
IC9 IC9
14.2V 10
R309
0V (5/7) (1/7)
Q67
4.7 1
11 10 2
FOCUS
DRIVE
+
2.5V
MUTE
2.5V
12
13
0V
IC9(6/7)
2.5V
-5V
+14V