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Sanyo DC-MP7500(BK)/(XE) Service Manual page 25

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SCHEMATIC DIAGRAM (AMPLIFIER & MCU)
TO_WRITER_TOOL
TO_TUNER_SECTION
8
7
6
5
4
3
2
1
R6640
10K
MVDD
+12V
59pin
Q6705
REEL
1
R6706
470
KRC107M
GND
2
D6701
1SS133
PH1
3
MOTO
4
Q6704
R6707
INITIALIZE SW
5
58
10K
KRC107M
PLUNGER
6
57pin
(F)REC SW
7
60
NC(Cro2)
8
R6705
3.3K
PACK SW
9
61
CN
10
CN652
10K
R6702
10K
R6701
R4803
22K
C4803
560P
L-CH
CN440
24
23
22
21
20
19
18
17
16
15
NC
NC
R
R
R
ALC
R
R
ALC
NC
R/P
PBNF
PBEQ
PBOUT
LOWCUT
RECIN
RECOUT
HEAD
IC440
AN7348K
R-CH
R
L
L
L
L
L
L
REC/PB
RIPPLE
IN
IN
PBNF
PBEQ
PBOUT
RECIN
RECOUT
SW
B PB
FILTER
1
2
3
4
5
6
7
8
9
10
E
HEAD
C4705
100P
R4703
22K
C4703
22K
560P
R4553
R4607
33
R4606
39K
Q4603
C4600
KTC3198
1/50
IC443
BA7755A
1
2
3
4
5
Q4604
KRC107M
Q4602
KTC3198
R4602
100
+8.5V
L4602
BEAD
REC
Q4601
KRC107M
R4741
27K
VIDEO_L
R4841
27K
VIDEO_R
This is a basic schematic diagram.
TO_SERVO_SECTION
1
2
3
4
5
6
7
8
9 10 11
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
+12V
REC_MUTE
D6702
+5.6V
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
1SS133
81
N.C.
82
N.C.
83
N.C.
84
N.C.
85
N.C.
86
N.C.
56pin
87
N.C.
88
N.C.
89
N.C.
90
N.C.
R6603
10K
91
N.C.
92
N.C.
R6602
10K
93
N.C.
94
N.C.
Q4800
R6601
10K
95
N.C.
KRC106
96
VLC
97
97
PLL DATA
98
98
PLL CLK
99
99
PLL PERIOD
VDD
100
L6501
D6501
100/K
1SS133
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
+8.5V
X6501
7.3728MHZ
14
13
D6504
1SS133
NC
VCC
Q6502
R6505
C6510
10K
R6507
KTC3198
10U/16V
3.3K
GND
R6511
1K
11
12
D6503
L6502
1SS133
100/K
R6509
4.7K
C6513
220U/6.3V
Q4700
KRC106
15K
R4820
R4821
5.6K
R4822
2.2K
R4823
6.8K
R4824
150K
R4819
100K
C4825
4.7/50
+8.5V
100
BEAT
R4656
28
27
26
25
24
23
22
R4605
VDD
CD
TU
TA
AU
R
R
10K
R
R
R R
R R
SWO
VRIN
IC441
L
L
L
L
L
L
GND
CD
TU
TA
AU
SWO
VRIN
+8.5V
1
2
3
4
5
6
7
C4725
4.7/50
R4720
15K
R4721
5.6K
R4722
R4719
100K
R4723
6.8K
2.2K
R4724
150K
- 28 -
TO SERVO
TO_FRONT_SECTION
5
4
3
2
1
VSS
50
BOOT
49
49
100/K
VAREF
48
L6503
AD K1
47
47
R6618
10K
AD K2
46
46
R6619
AD K3
45
10K
R6620
10K
R6621
POWER DET.
44
1K
R6622
4.7K
STEREO
43
43
RDS DATA
42
R6623
10K
OLT
41
41
IC651
R6624
10K
CLT
40
40
QTMP87EP26
R6625
10K
SLT
39
39
TRAY OPEN
38
38
R6626
10K
TRAY CLOSE
37
37
BUS3
36
36
R6627
10K
BUS2
35
35
BUS1
34
34
BUS0
33
33
BUCK
32
32
/CCE
31
31
30
X6502
29
32.768KHZ
C6501
0.1
4
21
20
19
18
17
16
15
R
R
R
R
R
STB
DATA
B1
B2
B3
OUT
T1
TC9422F
IC434
KIA7805API
L
L
L
L
L
B1
B2
B3
OUT
T1
Vref
CK
1
2
3
8
9
10
11
12
13
14
+5.6V
+5.6V
+V
GND
POWER_RY
CN432
TO_POWER_AMP_SECTION
1
2
3
4
5
6
7
8
9 10 11 12
PRODUCT SAFETY NOTICE
Each precaution in this manual should be followed during servicing.
Components identified with the IEC symbol
! ! !
parts list and the schematic diagram designated components in
which safety and performance can be of special significance. When
replacing a component identified by
! ! !
and
replacement parts designated, or parts with the same ratings of
resistance, wattage or voltage that are designated in the parts list
in this manual. Leakage-current or resistance measurements must
be made to determine that exposed parts are acceptably insulated
from the supply circuit before returning the product to the customer.
FANC
R4308
PR431
47
125mA
+12V
KTC3875
Q4300
Q4301
R4300 R4301
47K
4.7K
KTC3875
Q4302
KTC3875
FAN
POWER SUPPLY FOR
TAPE MECHA
12.0
16.0
+12V
+12V
12.6
POWER SUPPLY FOR SERVO
+8.5V
16.0
+8.5V
PR432
1000mA
9.1
D4332
1SS133
Q4321
KTC3198
R4320
4.7K
POWER SUPPLY FOR MPEG
KTD2058
KTA1266
+5.0V
Q4101
Q4100
R4104
47K
CN410
R4106
1K
GND
Q4102
+5V
KTC3198
+9.0V
CD_POWER
2500mA
PR411
CN439
VA
PR430
VB
2500mA
C4008
0.01
SUB POWER SUPPLY
FU402
T800mA L 250V
CN403
CN404
PT410
CN400
CN405
4
1
03
L4001
10.2V
Q4001
KTC3198
7
3
R4001
4.7K
BL
BW
CN401
CN402
- 29 -
and
mark in the
, use only the
CN435
KTC3875
R4307
Q4303
1K
PR433
1000mA
TO DAMP
-20.5V
3
-VSS
GND
2
+VDD
1
+20.5V
CN412
CN411
CN413 CN414
VE
T4A L 250V
GND
FU410
VF
CN415 CN416
T4A L 250V
R4130
FU411
10
TO FRONT
1/4W FUSE
VEE
3
VEE
PR414
750mA
FL2
FL2
VD
2
FL1
FL1
1
VC
CN418
CN417
230V
50Hz

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