Read Sharp CD-DP900 (serv.man20) Service Manual online
– 25 –
CD-DP900H/E
+5V
CNS4
BI4
CNP4
M3
T/T UP/DOWN
LOADING
MOTOR
+
–
+3.3V
TO DISPLAY SECTION
TO MAIN SECTION
CONSTANT
VOLTAGE
Q2
LASER
DRIVER
+3.3V
Q1
+5V(+B7)
PICKUP UNIT
IC1
LC78645NE
CD SERVO
VDD
LDD
LDS
M
SW3
DISC
NUMBER
SW2
CLAMP
SW1
OPEN/
CLOSE
CNP8
CNP7
BI401
BI701
TRACKING COIL
FOCUS COIL
SW4
PICKUP IN
M2
SLED
MOTOR
M1
SPINDLE
MOTOR
M
M
Q3
XVDD
RVDD
LVDD
RFVDD
XL1
33.8688 MHz
O/C
CLAMP SW
CD RES
CL
DI
DO
CE
DRF
WRQ
+6.5V (+B4)
DGND (DRIVER)
+5V (+B8)
VCC3
VCC2
VCC4
VCC1
IC2
M63001FP
FOCUS/TRACKING/
SPIN/SLED
DRIVER
XIN
XOUT
RES
WRQ
DO
DI
CLK
CE
TIN2
TIN1
FIN2
FIN1
TDO
FDO
SPDO
SLDO
CONT5
CONT2
CONT3
CONT4
VDD5
LCHO
80
79
75
20
5
40
18
24
23
14
8
21
22
29
35
41
47
46
38
VVDD
77
10
9
8
7
15
1
2
17 25
42
41
39
38
4
7
6
5
16
28
26 27
3
1
6
4
5
2
3
1
6
4
5
2
3
1
6
4
5
2
5
4
71
61
62
63
69
57
56
55
51
50
43
44
40
37
19
28
26
23
22
21
3
2
7
1
6
8
9
10
6
8
7
+5V (+B7)
DGND
L-CH
3
5
4
AGND
R-CH
1
2
42
68
25
70
64
65
66
DRF
67
48
49
ADAVDD
18
+3.3V
DISC NO
~
~
ZD1
3.3V
+
–
–
+
Figure 25 BLOCK DIAGRAM (1/3)
CD-DP900H/E
– 26 –
RDS
LC72723
ICT21
VDDD
VDDA
RDCL
READY
RDDA
RST
FLOUT
CIN
4.332MHz
XT21
TAPE MECHANISM
ASSY
ASSY
T1 PLAY
T2 PLAY
SOLENOID
MOTOR
TAPE
+B8
+B8
Q708
Q707
IC701
IC701
52 PIN
T2 REC
IC701
51 PIN
28 PIN
MOTOR DRIVER
Q706
FM IF
FM IF
VF
VIDEO
Q502
Q501
Q122
Q121
+B6
DECORDER
DOLBY
PROLOGIC
M62464AFP
IC501
SW
SW
SW
SW
SW
+B7
MECHA
TAP
Q706
Q708
FE301
FM FRONT END
CF301
CF302
Q301
FM
ANTENNA
L341
BALUN
AM LOOP
ANTENNA
FM OSC
L354
AN7345K
TUN SM
VIDEO/AUX IN
R
L
R
L
JK201
FM
+B6
CLK
+B6
AM IF
BI401
Q106
Q103-
456kHz
10.7MHz
450kHz
CLK
CE
DI
DO
DI
CE
MO/ST
SWITCHING
H ONLY
+B6
FM/AM
PLL(TUNER)
LC72131
IC302
OUT
FM/AM
L
R
BIAS
T1/T2
REC MUTE
P.B.
REC
AC BIAS
L
L
R
R
R
L
TAPE
TUNER
CD
PB
CNP11
FROM
CD SECTION
CD SECTION
HEAD
ERASE
SWITCHING
SWITCHING
SWITCHING
BIAS
Q110
Q111
Q109
Q126
SWITCHING
Q124
OSC
BIAS
L104
Q128
Q107
Q108
Q108
REC PB HEAD
TAPE 2
PB HEAD
TAPE 1
R-CH
L-CH
R-CH
L-CH
AUDIO
PROCESSOR
LC75341M
IC401
+B6
R
L
REC
R
L
L NF
R NF
ALC
REF
R REC
L REC
POP REDUCE
R NF
L NF
SWITCHING
L(T2)
R(T2)
R(T2)
R(T1)
L(T1)
/PLAYBACK AMP.
PLAYBACK AND RECORD
IC101
R
L
FM/AM
MPXIN
STEREO
AM RF IN
AM OSC IN
FM
Q360
VT
OSC
4.5MHZ
X352
COVERAGE
AM BAND
AM TRACKING
T303
T306
X351
MO/ST
VCO
DET
FM
FM+B
GND
AM IF
CF351
FM/AM
LA1832S
IC303
AM MIX
OUT
FM
IF IN
IF IN
CF352
T351
9
8
13
14
15
15
6
5
2
3
11
7
M
17
7
75
3
9
25
69
21
23
22
1
2
74
2
1
7
5
8
6
2
3
4
21
22
3
4
24
2
1
8
18
3
9 10
18
11
16
15
10
9
23
14
12
13
1
2
20
19
7
18
10
8
17
13
21
4
5
2
24
23
6
9
16
14
12
15
1
5
1
3
21
9
8
5
17
6
21
2
1
20 22 11
17
16
15
13
14
12
15
16 20
23
4
7
H/N
P.B
REC
T1/T2
T1/T2
HIGH
NOR/
4
IF MPX.
~
FM IF DET./FM
MPX./AM IF
Figure 26 BLOCK DIAGRAM (2/3)
– 27 –
CD-DP900H/E
M+13V
+B4
IC803
KIA7812AP
KIA7805AP
KIA7810AP
AN78L05
IC801~804
TRANSFORMER(SUB)
POWER
PT802
Q803
D814A
D815A
D816A
D817
D815A
D816A
D817
RL801
E ONLY
+B3
D809A
T2A L250V
F805
FAN
MOTOR
MOTOR
M901
PT801
POWER TRANSFORMER(MAIN)
IC802
VF2
VF1
–VF1
H ONLY
D818
D807
RL902
RL901
SPEAKER
SPEAKER
REAR
CENTER
SPEAKER
FRONT
R-CH
L-CH
R-CH
L-CH
–
+
–
+
–
+
+
–
–
+
+B7
+B7
BACK UP
MEMORY
+B7
+B5
Q709
XL700
4.194304MHz
Q504
Q503
SW721-SW725
SW727-SW729
SW727-SW729
H ONLY
H ONLY
SW711-SW720
SW701-SW708
+B7
+B7
RX701
MECHANISM
TAPE
Q705
Q706
Q708
VDD
AVDD
SMUTE
VDD
VDD
+B7
–VF
+B6
UNSW 5V
+5V
IC804
IC801
T4A L250V
T3.15A L250V
SUPPLY CORD
AC POWER
AC230~240V/50Hz
L801
LINE
FILTER
D808
+B3
–20dB ATT
TUN SM
Q402
Q401
SECTION
TO CD
VF2
VF1
Q804
+B5
+B8
+B1
–B1
+B2
–B2
R
L
D802
D801
JK701
HEADPHONES
STK402-071
Q823
POWER AMP.
STK402-020
IC902
A+10V
+7V
T2A L250V
F806
F804
T3.15A L250V
F803
F802
+Vcc
–Vcc
L-OUT
R-OUT
T4A L250V
F801
IX0504AW
R-OUT
L-OUT
L-OUT
–Vcc
+Vcc
POWER AMP.
IC901
E
CNP8
FROM
CD SECTION
CD SECTION
TF
MICROCOMPUTER
SYSTEM
IC701
FL DISPLAY
FL701
45
17
20 19 18
92
41
27
19
14
13
5 12
1
47
M
7
7
2
3
1
16
1
21
22
23
24
10
11
12
13
41 25
2
31
32
33
34
39
40
46
53
52
51
44
43
42
26
20
54
37
17
15
8
7
78
93
86
91
59
27
62
70
85
80
100
6
5
4
10
10
9
15
1
9
15
1
13
8
8
13
BI701
10
1
~
Q910
VOLTAGE
REGULATOR
Figure 27 BLOCK DIAGRAM (3/3)