CD-BA1500 (serv.man7). Part 2 - Notes on diagrams, Block diagrams, Schematic diagrams - Sharp Audio Service Manual (repair manual)

Model: CD-BA1500 (serv.man7)
Pages: 14
Size: 774.73 KB
Type: PDF
Document: Service Manual
Brand: Sharp
Device: Audio / System / Part 2 - Notes on diagrams, Block diagrams, Schematic diagrams
File: cd-ba1500-sm7.pdf
Date: 2018-11-20

Next: Sharp CD-BA1500 (serv.man8) Service Manual

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CD-BA1500H
– 20 –
•
 The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
1. In the tuner section,
(  ) indicates AM
< > indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
(  ) indicates the record state.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
•
 Parts marked with “       ” (                          ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
NOTES ON SCHEMATIC DIAGRAM
•
 Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
•
 Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to
electrolytic capacitor, the expression “capacitance/withstand
voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
•
 Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
REF. NO
DESCRIPTION
POSITION
POSITION
SW613
EQUALIZER
ON—OFF
SW614
VOLUME UP
ON—OFF
SW615
VOLUME DOWN
ON—OFF
SW616
CD
ON—OFF
SW617
TAPE
ON—OFF
SW618
TUNING /TIME DOWN
ON—OFF
SW619
MEMORY/SET
ON—OFF
SW620
REWIND
ON—OFF
SW621
FORWARD
ON—OFF
SW622
PLAY/REPEAT
ON—OFF
SW623
STOP
ON—OFF
SW625
REC/PAUSE
ON—OFF
SW626
TUNING/TIME UP
ON—OFF
SW627
VIDEO/AUX
ON—OFF
SW628
TUNER (BAND)
ON—OFF
REF. NO
DESCRIPTION
SW1
OPEN/CLOSE
ON—OFF
SW2
CLAMP
ON—OFF
SW3
DISC NUMBER
ON—OFF
SW4
PICKUP IN
ON—OFF
SW601
POWER
ON—OFF
SW602
CLOCK
ON—OFF
SW603
TIMER/SLEEP
ON—OFF
SW604
PTY TI/SEARCH
ON—OFF
SW605
EON
ON—OFF
SW606
ASPM
ON—OFF
SW607
DISPLAY MODE
ON—OFF
SW608
STATION
ON—OFF
SW609
DISC SKIP
ON—OFF
SW610
OPEN/CLOSE
ON—OFF
SW611
DIMMER
ON—OFF
SW612
X-BASS/DEMO
ON—OFF
Figure 20 TYPES OF TRANSISTOR AND LED
(1)  (2) (3) 
(S) (G) (D) 
E   C    B 
FRONT
VIEW
KTA1266  GR
KRC102  M
KRC104  M
KTA1271 Y
KTA1274 Y
2SC1845 F
KTA1273  Y
KTC3203  Y
KTC3199  GR
KRC107 M
2SC380 O
KTC2026
4204SRT7
B C E
FRONT
VIEW
FRONT
VIEW

– 21 –
CD-BA1500H
 Figure 21 BLOCK DIAGRAM (1/3)
CNP12 
CNP11
Q2
+3.3V 
+5V 
CONT5
CONT2
CONT3
CONT4
CONT7
CONT6
SLD0
SPD0
FD0
TD0
+5V 
TO DISPLAY SECTION
CLAMP SW
CDINT
WRQ
CE
DO
CLK
DI
CD RES
GND
DRF
CNS4
BI4
CNP4
M2
SLED
MOTOR 
M1
SPINDLE
MOTOR
M
M
TRACKING  COIL 
FOCUS  COIL
PICKUP UNIT 
TE
FE
RFEV
HFL 
VVDD
ADAVDD
VDD
LVDD
RVDD
XVDD
VDD5V
RFEV
FE-
FE
TE-
TE
HFL
+3.3V 
CONSTANT
VOLTAGR
+5V
Q1
Q3
LASER
DRIVER
LDD 
PD
VCC3
VCC2
VCC4
VCC1
TIN2
TIN1
FIN2
FIN1
IC3
M63001FP
FOCUS/TRACKING/
SPIN/SLED DRIVER
IC1
LA9235M
SERVO AMP.
TO MAIN SECTION
(TO IC401)
R-CH
L-CH
AGND
DGND
+5V(+B3)
RCHO
RVSS
LVSS
LCHO
IC2
LC78641E
SERVO/SIGNAL
CONTROL
-
+
M
SW1
OPEN/
CLOSE
XL1
16.9344MHz
6
5
4
3
3
2
5
4
1
1
2
3
4
7
8
2
1
7
8
9
10
1
2
4
3
5
SW2
CLAMP
SW3
DISC
NUMBER
M3  T/T
UP/DOWN
MOTOR
6
1
2
4
3
5
6
1
2
4
3
5
6
75
76
45
46
47
48
32 31
30
65
66
67
68
69
70
71
72
CE
CL
DI
DO
INT
WRQ
RES
DEF
52
51
XOUT
XIN
73
5 18 36 44 49 50
7
14
15 16
23
24
25
26
33
3
13
19
40
64
74
17
18
19
20
21
22
30
23
11
9
1
4
5
6
7
15
16
26
27
2
17
25
41
42
38
39
35
29
22
21
14
8
40
18
24
23
28
SW4
PICKUP IN
+3.3V 
CNS99
BI99
CNP5
IC99
TOTX178A
OPTICAL FIBER
DATA LINK
1
2
3
1
2
3
1
2
3
37
DOUT
1
2
3

CD-BA1500H
– 22 –
 Figure 22 BLOCK DIAGRAM (2/3)
REC/PLAY
CL
CE
DI
SYSTEM
MUTE
Q401
Q402
DO
CL
DI
CE
MO/ST
SWITCHING 
+B2
FM/AM
IC302
LC72131
PLL(TUNER)
FM/AM
OUT 
+B2
L
R
BIAS
T1/T2 
MUTING
Q110
Q111
P.B.
REC
AC  BIAS
R 
L 
SO401
VIDEO/AUX
L 
L 
R 
R 
R 
L 
R 
L 
AUX 
TAPE
TUNER 
CD
PB
CNS402
FROM
CD SECTION
CNP11
ERASE
HEAD
SWITCHING 
SWITCHING 
SWITCHING 
BIAS
Q102
Q103
Q101
Q113
SWITCHING 
Q112
L103
OSC
BIAS
Q114
L104
Q108
Q109
REC  PLAYBACK 
 HEAD 
TAPE  2
PLAYBACK  HEAD
TAPE  1
R-CH
L-CH
R-CH
L-CH
IC401
LC75341
AUDIO  PROCESSOR
H/N 
P.B 
+B2
R
L
R
L REC
L  NF
R  NF
ALC
REC
T1/T2 
T1/T2
NOR/
HIGH
REF
R  REC
L  REC
POP
REDUCE
R  NF
L  NF
SWITCHING 
Q104~
Q107
L(T2)
R(T2)
R(T1)
L(T1)
IC101
AN7345K
PLAYBACK  AND  RECORD
/PLAYBACK  AMP.
R
L
FM/AM
MPXIN
STEREO
AM  RF  IN
AM  OSC  IN 
FM
Q360
VT
FM  OSC
OSC 
X352
4.5MHZ
AM  BAND
COVERAGE
AM  TRACKING
T303
X351
456KHz
MO/ST
VCO
FM
DET
VCC
GND 
AM  IF 
CF351
AM IF
IC303
LA1832S
FM/AM IF MPX.
AM  MIX
CF352
T351
CF301
FE301
FM  FRONT  END
22
3
21
4 
24
2 
1 
8 
18
17
5
4
3
9 10
18
11
16
3
15
10
9
7
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
14
3
8
4
3
2
21
7
9
8
5
6
21
2
1
20
22
11
17
16
15
5
6
7
13
14
12
15
16
23
4
7
FM
+B
4
T306
17
AM LOOP ANT
SO301
ANTENNA
TERMINAL
L341
BALUN
24
1
VSSD
VDDD
XIN
XOUT
VSSA
VDDA
MPX
IN
DO
CL
DI
CE
XT21
4.332MHz
ICT21
LC72720
RDS DECORDER
4
2
3
23 22 21 20
15
14
13
12
L354
@
CF302
Q301
3
3
1
1
1
2
1
2
CNP302
LOW PASS
FILTER
3
1
R
L
+B2
VCC
+5.1V
VDD

– 23 –
CD-BA1500H
 Figure 23 BLOCK DIAGRAM (3/3)
PT801
MAIN POWER 
TRANSFORMER
F802
T4A L 250V
5V
~
REC/PLAY
VLOAD
+B4
RESET  IC
SYS  STOP
RESET
IC704
Q609
Q971
+B3
+B2
M901
FAN
MOTOR
M
SPEAKER
TERMINAL
MAIN
(FRONT)
SO901
RL951
RELAY
+B4
+B4 
+B4 
+B4
VDD
VDD
VDD
R-OUT
L-OUT
SP.  DET.
Q901
Q902
Q903
Q904
UNSWITCH
+5V
A10V
+B4
+B3
+B2
+B1
–B1
~ 
IC852
IC851
IC841
SYSTEM
MUTE
Q401
Q402
CE
DI
CL
DO
+B2
XL701
~
D802~D805
D801
F803
T2A L 250V
~
~
~
~
~
-Vcc
+Vcc
IC901
STK40204
POWER  AMP.
BIAS
T1/T2 
AVDD
KEY
SW601~SW623
SW625~SW628
TO  CD
SECTION
Q601~
Q603
130  C
TF
IC701
IX0329AW
SYSTEM
MICROCOMPUTER
FL701
FL DISPLAY
~
~
~
7
13
9
8
15
1
10
1
3
39
38
31
93
92
90
63
21 36
20
15
14
12
11
6 
5 
4 
1 
2
85
80
33
31
45
46
7 
11 12
9 10
15 16 17 20 21 22
24
100
79
78
55 54 53 52
49
47
44 43 42 44
39
36
35
34
3
4
2
1
40
56
23
L
R
JK951
HEADPHONES  
RL801 
PT871
SUB POWER
TRANSFORMER
D872~D875
L801
AC  POWER
SUPPLY  CORD
AC  230V 50Hz
SO801 
AC INPUT
SOCKET
Q873
KIA7810AP
VOLTAGE
REGULATOR
KIA7805P
VOLTAGE REGULATOR
AN78L05
CONSTANT VOLTAGE
REGULATOR
F801
T4A L 250V
Q607
M
TAPE
MOTOR
MOTOR
DRIVER
Q606
Q605
RX701
1 
2 
3 
+B4
LED722
Q604
Q608
SOLENOID
T2 PLAY
T1 PLAY
R. PLAY
F. PLAY
51 50
.1V

Display

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Here you can read online and download Sharp CD-BA1500 (serv.man7) Service Manual in PDF. CD-BA1500 (serv.man7) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp CD-BA1500 (serv.man7) System. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.

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