Kenwood KDC-4551UB/455UW Service Manual page 13

A
1
DPU1 (X92-)
OPTICAL PICKUP
2
1
0.1
TRACKING
COIL
FOCUS
COIL
CD PLAYER UNIT (X32-6430-00) (A/2)
3
CN102
VF2 1
VCC 2
VT2 3
LD 4
SL1
GND 5
VT1 6 VT1
VC 7 VC
MD 8 MD
R1 130
VR 9
B1
VF1 10
0
GND 11
TRK- 12 TR-
4
TRK+ 13 TR+
FOCUS+ 14 FO+
FOCUS- 15 FO-
SP+
SPINDLE
M
SP-
MOTOR
DM1 (X92- )
(X32- ) (B/2)
SW4
REST
REST
FE+
5
FEED
M
MOTOR FE-
DM2 (X92- )
LO+
LOAD
M
LO-
MOTOR
DM3 (X92- )
SW1
SW1
SW2
SW2
SW3
SW3
6
CAUTION : For continued safety, re place safe ty
critical com po nents only with manufacturer's rec om-
mend ed parts (refer to parts list).
Indicates safety critical com po nents. To reduce the
risk of electric shock, leakage-cur rent or re sis tance
mea sure ments shall be carried out (ex posed parts are
ac cept ably in su lat ed from the supply cir cuit) be fore
the ap pli ance is returned to the customer.
• DC voltages are as measured with a high imped-
7
ance volt me ter. Val ues may vary slight ly due to
vari a tions between in di vid u al in stru ments or/and
units.
B
ELECTRIC UNIT (X34-69xx-xx)
1 VF2
2 VCC
3 VT2
4 LD
5 GND
6 VT1
VC
7
8 MD
1K
9 VR
10 VF1
11 GND
12 TRK-
13 TRK+
14 FOCUS+
15 FOCUS-
CN101 CN502
VF1
26 1
SW3
25 2
SW3
VCC
24 3
SW2
SW2 23 4
VF2
22 5
SW1
SW1 21 6
R576
VT2
20 7
10K
PSW
REST 19 8
R577
VT1
VT1 18 9
10K
VREF
VC 17 10
MD
MD 16 11
SL2
MGND
15 12
MGND
14 13
LOADING-
LO- 13 14
LOADING+
LO+ 12 15
SPINDLE+
SP+ 11 16
SPINDLE-
SP- 10 17
FEED+
FE+ 9 18
FEED-
FE- 8 19
GND
7 20
LD
6 21
GND
5 22
TRACKING-
TR- 4 23
TRACKING+
TR+ 3 24
FOCUS-
FO- 2 25
FOCUS+
FO+ 1 26
C
VREF
R501
33K
0V
IC501
1.6V
BTL
1.6V
3.0V
C511
470P
4
2
VF1
51
D3.3V D3.3V
50
3
VF2
49
R575
VT2
3.3K
48
2
VT1
R534
10K
4
CD MD
LO-
4
LO+
SP+ 3
SP-
FE+
C541
FE-
2200P
C540 R540
0.1 220
TR-
C542 C543
TR+
0.1 0.01 C544 3300P
FO-
FO+
C546 C547
1 0.015
C548
68P
R541
3 0
VF1
R543
0
VF2
VT2
3
VT1
CD MD
3.0V
1.9V
Q540
X32-6430-00 (1/1), X34-691x-xx (1/4)
D
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
1
1
1.6V
1.6V
3.2V
C512 1
470P R504 R508
27
51K 0
D502
CD8V
VREF
2
0V 1
VCOI
3.2V 2
RVDD3
3
SLCO
4
RFI
C545 0.1
5
1.6V
RFRPI
6
RFEQO
7
DCOFC
1.6V
C549
8
AGCI
1.5V
0.1 9
RFO
0V 10
RVSS3
1.6V 11
FNI2
1.9V 12
FNI1
1.6V 13
FPI2
1.9V 14
FPI1
1.9V 15
TPI
1.9V 16
TNI
1.6V 17
VRO
0V 18
AVSS3
0V 19
MDI 0V
20
LDO
2.4V
VREF
D3.3V
E
CD 3.3
IC530
3.3V 1
CTRL VI
2
GND VOU
0V
CD 1.5
IC531
3.3V 1
CTRL VI
2
GND VOU
0V
CD 1.5
IC532
2.2V
1
CTRL VI
2
GND VOU
0V
BU1.5V
1
IC540
SERVO
1.6V
1.5V
0
C
0
13