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

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