Sharp XL-T300 (serv.man13) Service Manual ▷ View online
– 21 –
XL-T300H
Figure 21 BLOCK DIAGRAM (1/3)
ANTENNA
TERMINAL
TERMINAL
AM Band
Coverage fL
Coverage fL
FM MUTE
LEVEL
AM IF
FM IF
FM IF
FM IF
AM IF
AM Band
Tracking fL
Tracking fL
VD301
SVC348S
SVC348S
FM IF DET./
FM MPX./AM IF
IC303
LA1832S
+5V
+5V
VT
+5V
+5V
+B
+B
+B
4.332MHz
X521
+B
FM +B
+5V
FM +B
+5V
T302
T306
T351
CF301
CF302
CF352
CF351
L354
LOW PASS
FILTER
SWITCHING
Q301
L341
BALUN
VR351
X352
4.5MHz
VOLTAGE
REGULATOR
AM
GND
FM
75ohms
SO301
VSM
AM RF
OUT
OUT
OUT
OUT
IN
IN
CUT
AM LOW
FM/AM
MPX VCO
MPX IN
MO/ST
L-CH
R-CH
FM AFC
AM OSC
AM OSC
(AM/FM)
PHASE
PHASE
IF OUT
VCC
FM DET
STEREO
SD
GND
AM IF
REG
AM MIX OUT
IN
IN
FM IF
23
22
21
20
19
18
17
16
15
14
24
13
12
11
10
9
8
7
6
5
4
3
2
1
PLL(TUNER)
11
10
9
8
7
6
5
4
3
1
PD
IF IN
AM IN
FM IN
VDD
AIN
AOUT
VSS
X OUT
22 21 20
19
18
17 16 15
14 13 12
FM
FM
MUTE
CE
DI
CL
DO
MO/ST
IF REQ
X IN
IC302
LC72131
8
7
6
5
4
3
2
1
FE301
FM FRONT END
TP301
456kHz
X351
Q351
Q521
Q360
ZD351
TUNER PWB
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
14
13
12
11
10
9
8
7
6
5
4
3
2
1
RDS CLK
RDS DATA
VSM
SD
FM ST
DO
CL
CE
DI
A_12V
D_GND
TUN_L
TUN_R
A_GND
TO
MAIN PWB
LC72723M
RDS
CNS301
IC521
SWITCHING
RESET
SWITCHING
SWITCHING
Q701
Q702
Q703
Q703
COM0
COM3
SEG0
SEG33
REMOCON
P–CONT
VDD
32.768kHz
8MHz
38
5
4
1
1
100
67
66
65
64
63
62
61
60
59
58
33
57
56
54
53
42
52
41
21
55
39
48 49 50
32
47
TAPE SW
22
8
4
LCD701
FL DISPLAY
TO
MAIN PWB
REMOTE
SENSOR
RX701
RESET
23
VSM
VLC1
VLC2
VLC3
7
6
5
MMOD
VREF
VREF+
VSS
15
24
14
11
SYS_STOP
POWER
38
37
13
12
10
9
X701
X702
OSC1
OSC2
XO
XI
CLID_SW
SW711,712
SW721~728
SW709
SW710
SW710
KEY1
KEY2
18
17
16
SYSTEM MICROCOMPUTER/
FL DRIVER
IC701
IX0045SJ
DATA
ST
SD
51
B-LIGHT
DI
CL
DO
CE
28
27
26
25
REC
BIAS
RUN PLS
SOL
MOT
B-CAN
35 36
34
31
30
29
SURR
P-MUTE
CD+B
46
45
43
CLE
40
DISPLAY PWB
Q708
Q707
Q709
Q706
GND
LED701
LED PWB
TO
MAIN PWB
TO
MAIN PWB
TO
MAIN PWB
TO
MAIN PWB
Q806
Q804
Q807
LED702
LED703
CD LID
MOTOR DRIVER
FAN_CONT
M-GND
AMP_DET
SP_RLY
PROTECT
FAN_DET
M–12V
7
6
5
4
3
2
1
7
6
5
4
3
2
1
3
2
1
2
1
3
2
1
2
1
USWD5.6V
P_CONT
D_GND
13
12
11
10
9
8
7
6
5
4
3
13
12
11
10
9
8
7
6
5
4
3
2
1
CLE
DATA
VSM
D_GND
SURROUND
P_MUTE
CD+B
DI
CE
CL
DO
STEREO
SD
B-CAN
BLAS
U_CON5V
TAPE-SW
SOL
MOT
REC
RUN-PLS
1
2
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
SWITCH
PWB
CD LID
10
9
8
7
6
5
4
3
2
1
10
9
8
7
6
5
4
3
2
1
CD-RW
PU-IN
BUS0
BUS1
BUS2
BUS3
BUCK
CCE
CD-RES
CD-STB
GVSW
PU-IN
BUS0
DIMMER
LIGHT
CLID_UP
CLID_DW
AMP_DET
FAN_DET
FAN_CONT
PROTECT
SP_RLY
BUS1
BUS2
BUS3
BUCK
CCE
CD-RES
CD-STB
1
2
3
5
6
7
8
9
LED PWB
M
CD LID
OPEN/CLOSE
TA7291S
CNW705
CNW701
CNW702
CNW703
SW802
CNW704
IC804
LED801
M801(243-6)
XL-T300H
– 22 –
Figure 22 BLOCK DIAGRAM (2/3)
Q80
Q802
GVSW
FEO
FEN
VRO
RFRP
RFIS
RFGO
RFGC
AGCI
RFO
RFN
GND
FEO
FEN
VRO
RFRP
RFIS
RFGO
RFGC
AGCI
RFO
RFN
GND
RFDC
TEO
TEN
TEBC
SEL
LDO
MDI
TN1
TPI
FPI
FPI
FNI
VCC
HEAD AMP.
IC802
TA2157F
SERVO/SIGNAL CONTROL
IC801
TC94A14F
DOUT
TERMINAL
PWB
AVSS
DVSS
DVSS
TESIN
XVSS
DVSL
TMAX
RFI
RFCT
LPFN
LPFO
PVREF
VREF
X801
16.93MHz
XO
XI
DVDD
PDO
AVDD
DVDD
VDD
XVDD
AVDD
SEL
RFGC
TEBC
FOO
TRO
TEI
TEZI
RFRP
FEI
SBAD
SWITCHING
R-CH
L-CH
SO401
VIDEO/AUX
INPUT
VIDEO/AUX
INPUT
+B1
FOCUS/
TRACKING/
SPIN/SLED
DRIVER
1
2
3
4
5
6
7
8
9
4
10
11
12
13
16 26 27 19
21 22 23 24 25 17 18 28
PO1–
PO1+
VO4+
VO4–
VIN3
VG3
VCC
VCC
BIAS
VG4
VIN4
VO3+
VO3–
OPO
VO2-
VO2+
VIN2
VG2
GND
GND
GND
MUTE
REG O
TRB
VG1
VIN1
VO1+
VO1–
IC803
MM1469PH
FO
TR
7.3V
3.3V
+B1
+B6
+B2
+B4
+B5
+B5
A
C
B
F
E
+B5
+B5
+B6
23
24
22
21
20
19
18
17
14
26
24
20
19
18
16
35
38
36
37
33
34
31
32
29
28
30
16
15
13
12
11
10
9
8
7
6
5
4
3
2
1
DIGITAL
OUT
OUT
3
2
1
J801
40
41
FMO
DMO
63
57
62
61
60
59
58
46
47
BUS0
51 DVDD
BUS1
BUS2
BUS3
BUCK
CCE
RST
53
50
RO
LO
6
15
25
39
43
48
64
7 22 42 44 45
54
A_GND
GND
GND
M_GND
VOLTAGE
REGULATOR
ZD801
Q803
Q804A
Q805
ZD802
Q804A
Q805
ZD802
LD
MON
FOCUS COIL
1/2V
5V
TRACKING COIL
CD PICKUP UNIT
+B6
SPINDLE
MOTOR
SLED
MOTOR
PICKUP IN
SP+
SP–
SL+
SL–
PU-IN
GND
+
–
–
+
M
M
CD MOTOR PWB
M701
M702
SW702
SWITCHING
Q171
Q172
+B
Q153
BEAT
CANCEL
CANCEL
B-CAN
REC
BIAS
REC BIAS
CONT
CONT
SWITCHING
SWITCHING
A–12V
Q152
Q154
Q155
Q155
Q151
L151
FROM
DISPLAY PWB
Q105
Q106
Q106
REC MUTE
REC
B-CAN
BIAS
RUN_PLS
REC
MOT
SOL
U_CON5V
TAPE_S
W
L-OUT
CNP703
Q905
Q906
Q903
U-CON5V
M+12V
Q904
Q902
Q901
SWITCHING
CNW901
RUN-PLS
SOL
MOT
SWITCHING
SWITCHING
SOLENOID
DRIVER
SWITCHING
TAPE MOTOR
DRIVER
A–12V
CD_L
CD_R
1
RDS CLK
TAPE
SOLENOID
–
+
FOOL
CAM
MOTOR
1
2
3
4
5
7
6
6
1
2
3
4
5
7
6
6
M
R-CH
L-CH
ERASE
HEAD
HEAD
RECORD/PLAY
Q101-Q104
8
7
6
5
7
6
5
3
2
1
2
1
9
4
8
7
6
5
7
6
5
3
2
1
2
1
9
4
1
2
2
1
2
2
CNW101
CNP101
PHOTO
INTERRUPTER
10
9
8
5
2
9
8
7
6
5
4
3
2
1
11 6
3 4 1
HEAD SELECTOR
REC./P.B.
EQUALISER
AMP.
7
12
10
9
8
7
6
5
4
3
2
1
CD_RW
PU_IN
BUS0
BUS1
BUS2
BUS3
BUCK
CCE
CD_RES
CD_STB
1 2 3 4 5 6 7 8
BA3126N
BA3311L
CNP301
TAPE MECHANISM ASS'Y
PH901
CFW901
SW901
SOL901
SW902
M901
IC101
IC102
CNP704
– 23 –
XL-T300H
Figure 23 BLOCK DIAGRAM (3/3)
VOLTAGE
REGULATOR
1
3
3
2
1
AC INPUT
SOCKET
AC230V,50Hz
AC 230V,50Hz
AC POWER SUPPLY CORD
LINE
FILTER
POWER
TRANSFORMER
(SUB)
CNP681
SO651
LF651
IC681
AN78L05
CONSTANT
RLY601
T681
D681~D684
Q683
1
2
3
4
1
2
3
4
5
5
1
3 2
2
POWER
TRANSFORMER
(MAIN)
TF
T651
T1.25A L 250V
CNP651
F653
T3.15A L 250V
F652
T3.15A L 250V
F651
Q604
Q605
Q605
D657~D660
D651~D654
Q801
Q201
Q202
Q202
Q881
Q882
Q891
Q207
RLY201
Q603
Q601
Q602
Q602
Q606
Q607
Q607
CD +B
+B
CD_6.8V
+B1
+B2
+B3
+B4
M_12V
A_12V
15
13
8
1
IN1
GND
VCC
10 11
+VE1
–VE1
+VE2
–VE2
7
6
IN2
+B
+B
POWER AMP.
IC601
STK40202
L-CH
R-CH
L-CH
R-CH
SPEAKER TERMINAL
+
+
SO601
HEADPHONES
1
2
3
4
5
9
10
JK601
VSS
VDD
IC401
LC75342M
15
14
13
12
11
10
9
17
18
19
20
21
22
23
24
25
26
27
28
29
16
8
7
6
5
4 3 2 1
CE
DI
30
CL
LOGIC
TUN L
CD L
TUN R
R-CH OUT
R-CH OUT
L-CH OUT
R-CH IN
L-CH IN
L-CH OUT
A_12V
NC
FUNCTION/VOLUME
EQUALISER
AUX R
AUX L
TAPE L
CD R
RMINAL
PWB
SWITCHING
MUTE
VOLTAGE
REGULATOR
+B6
CH
CH
1
O/AUX
T
T
+B5
A
C
B
F
E
+B5
AL
D_GND
MAIN PWB
+B4
+B2
+B
Q461
Q463
+B6
Q241
Q242
Q242
Q203
Q204
Q883
Q884
CD_L
CD_R
14 13 12
1
2
3
4
5
6
7
8
9
10
11
1
12
11
10
9
8
7
5 6
4
2 3
13
P_MUTE
CD +B
CL
DI
CE
DO
FM ST
SD
VSM
DATA
RDS CLK
A_GND
TUN R
TUN L
D_GND
A_12V
RDS CLK
RDS DATA
DO
FM ST
SD
DI
CL
CE
VSM
D_GND
SURROUND
FROM
TUNER PWB
FROM
DISPLAY PWB
5 6 7 8
4 3 2 1
SURROUND
CONTROL
2
1
2
1
FROM
DISPLAY PWB
1 2 3
USWD_5.6V
P_CONT
D_GND
FROM
DISPLAY PWB
1 2 3 4 5 6 7
AMP-DET
SP-PLY
PROTECT
FAN-DET
FAN_CONT
M_12V
M
KIA4558P
CNP301
CNP702
IC201
M802
FAN
MOTOR
CNP701
CNP705
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