Sharp LC-46LE631E (serv.man2) Service Manual ▷ View online
85
LC-32LE631
LC-40LE631
LC-46LE631
LC-40LE631
LC-46LE631
8.12 Diagram
DVBS supply
B08A, TPS54283PWP (IC 7T03)
Figure 8-12 Internal block diagram and pin configuration
18770_305_100217.eps
100217
Block diagram
7
FB1
+
Soft Start
1
C
COMP
+
S
Q
Q
R
R
+
Current
Comparator
Comparator
BP
f(I
DRAIN1
) + DC(ofst)
2
1
3
Anti-Cross
Conduction
1.2 MHz
Oscilator
Divide
by 2/4
by 2/4
Ramp
Gen 1
Gen 1
Ramp
Gen 2
Gen 2
CLK1
CLK2
BP
CLK1
Weak
Pull-Down
MOSFET
Pull-Down
MOSFET
5
EN1
6
EN2
6 A
6 A
VDD2
Internal
Control
10
SEQ
150 k
150 k
Output
Undervoltage
Detect
BP
FB1
FB2
CLK1
4
GND
8
FB2
+
Soft Start
2
C
COMP
+
S
Q
Q
R
R
+
Current
Comparator
Comparator
BP
13
14
12
Anti-Cross
Conduction
BP
CLK2
Weak
Pull-Down
MOSFET
Pull-Down
MOSFET
11
BP
9
ILIM2
150 k
150 k
BP
CLK2
4
GND
Level
Select
5.25-V
Regulator
References
BOOT1
PVDD1
SW1
BOOT2
PVDD2
SW2
f(I
DRAIN2
) + DC(ofst)
0.8 V
REF
I
MAX2
(Set to one of two limits)
f(I
DRAIN1
)
f(I
MAX1
)
Overcurrent Comp
f(I
SLOPE1
)
Level
Shift
Level
Shift
f(I
DRAIN2
)
f(I
MAX2
)
f(I
SLOPE2
)
FET
Switch
Switch
TSD
PVDD2
f(I
SLOPE1
)
f(I
SLOPE2
)
SD1
SD2
UVLO
0.8 V
REF
SD2
0.8 V
REF
SD1
UDG-07007
Overcurrent Comp
R
COMP
R
COMP
IC Data Sheets (continued)
86
LC-32LE631
LC-40LE631
LC-46LE631
LC-40LE631
LC-46LE631
8.13 Diagram
DVBS supply
B08B, LNBH23Q (IC 7T50)
Figure 8-13 Internal block diagram and pin configuration
18770_306_100217.eps
100217
Block diagram
Pinning information
SDA SCL
LNBH23
ADDR
A-GND
I2C Diagnostics
I2C interface
DSQIN
Vup
VoRX
VoTX
LX
22KHz
Oscill.
Oscill.
PW
M
Con
tro
lle
lle
r
Rsense
EN
VSEL
Linear Post-reg
+Modulator
+Protections
+Diagnostics
+Modulator
+Protections
+Diagnostics
ITEST
TTX
EN
VSEL
VOUT Control
EXTM
P-GND
Preregulator
+U.V.lockout
+P.ON reset
+U.V.lockout
+P.ON reset
Byp
Vcc
Vcc-
L
ISEL
TTX
TEN
DSQOUT
DETIN
22KHz Tone
Amp. Diagn.
Amp. Diagn.
22KHz Tone
Freq. Detector
Freq. Detector
TTX
VCTRL
SDA SCL
LNBH23
ADDR
A-GND
I2C Diagnostics
I2C interface
DSQIN
Vup
VoRX
VoTX
LX
22KHz
Oscill.
Oscill.
22KHz
Oscill.
Oscill.
PW
M
Con
tro
lle
lle
r
Rsense
EN
VSEL
Linear Post-reg
+Modulator
+Protections
+Diagnostics
+Modulator
+Protections
+Diagnostics
ITEST
TTX
EN
VSEL
VOUT Control
EXTM
P-GND
Preregulator
+U.V.lockout
+P.ON reset
+U.V.lockout
+P.ON reset
Byp
Vcc
Vcc-
L
Byp
Vcc
Vcc-
L
ISEL
TTX
TEN
DSQOUT
DETIN
22KHz Tone
Amp. Diagn.
Amp. Diagn.
22KHz Tone
Freq. Detector
Freq. Detector
TTX
TTX
VCTRL
1 n.c .
2 n.c .
3 n.c .
4 LX
5 P -G N D
6 S D A
7 n.c .
8 n.c .
9 S C L
2 n.c .
3 n.c .
4 LX
5 P -G N D
6 S D A
7 n.c .
8 n.c .
9 S C L
10 A D D R
11 D S Q out
12 D S Q IN
13 E XTM
14 TTX
15 B Y P
16 n.c .
17 n.c .
18 V c c -L
19 V c c
20 A -G N D
21 V oR X
22 V oTX
23 n.c .
24 n.c .
25 n.c .
26 n.c .
27 V up
28 IS E L
29 D E TIN
30 V C TR L
31 n.c .
32 n.c .
11 D S Q out
12 D S Q IN
13 E XTM
14 TTX
15 B Y P
16 n.c .
17 n.c .
18 V c c -L
19 V c c
20 A -G N D
21 V oR X
22 V oTX
23 n.c .
24 n.c .
25 n.c .
26 n.c .
27 V up
28 IS E L
29 D E TIN
30 V C TR L
31 n.c .
32 n.c .
Connected with power grounds and to
the ground layer through vias
to dissipate the heat.
the ground layer through vias
to dissipate the heat.
Epad
IC Data Sheets (continued)
87
LC-32LE631
LC-40LE631
LC-46LE631
LC-40LE631
LC-46LE631
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
I
H
G
F
E
D
C
B
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
I
H
G
F
E
D
C
B
A
BLOCK
DIAGRAMS
9.1. 32” Overall Wiring
Diagram
1M95
(PSU)
1. +3V3STDBY
2. STANDBY
3. GND
4. GND
5. +12V
6. +12V
7. +VSND
8. GND_SND
9. BL-ON-OFF
10. BL-DIM1
11. BL-I-CTRL
12. POK
13. +24V
14. GND1
2. STANDBY
3. GND
4. GND
5. +12V
6. +12V
7. +VSND
8. GND_SND
9. BL-ON-OFF
10. BL-DIM1
11. BL-I-CTRL
12. POK
13. +24V
14. GND1
1316
(PSU)
1. ANODE 1
2. NC
3. CATHODE 1
4. GND
5. ANODE 2
6. NC
7. CATHODE 2
8. NC
9. ANODE 3
10. NC
11. CATHODE 3
12. NC
13. ANODE 4
14. NC
15. CATHODE 4
2. NC
3. CATHODE 1
4. GND
5. ANODE 2
6. NC
7. CATHODE 2
8. NC
9. ANODE 3
10. NC
11. CATHODE 3
12. NC
13. ANODE 4
14. NC
15. CATHODE 4
1M95
(B03C)
1. +3V3-STANDBY
2. STANDBY
3. GND
4. GND
5. +12VIN
6. +12VIN
7. +24V-AUDIO-POWER
8. GND
9. LAMP-ON
10. BACKLIGHT-PWM_BL-VS
11. BACKLIGHT-BOOST
12. POWER-OK
13. +24V
GND
2. STANDBY
3. GND
4. GND
5. +12VIN
6. +12VIN
7. +24V-AUDIO-POWER
8. GND
9. LAMP-ON
10. BACKLIGHT-PWM_BL-VS
11. BACKLIGHT-BOOST
12. POWER-OK
13. +24V
GND
1308
(PSU)
1. N
2. L
2. L
1M19
(B09A)
1. LIGHT-SENSOR
2. GND
3. RC
4. LED-2
5. +3V3-STANDBY
6. LED-1
7. KEYBOARD
8. +5V
2. GND
3. RC
4. LED-2
5. +3V3-STANDBY
6. LED-1
7. KEYBOARD
8. +5V
1G51
(B06B)
1. +VDISP
2. +VDISP
3. +VDISP
4. +VDISP
|
|
51. CTRL-DISP
2. +VDISP
3. +VDISP
4. +VDISP
|
|
51. CTRL-DISP
1735
(B03A)
1. LEFT-SPEAKER
2. GND-AUDIO
3. GND-AUDIO
4. RIGHT-SPEAKER
2. GND-AUDIO
3. GND-AUDIO
4. RIGHT-SPEAKER
1D38
(B03A)
1. LEFT-SPEAKER
2. GND-AUDIO
3. RIGHT-SPEAKER
2. GND-AUDIO
3. RIGHT-SPEAKER
1735
(B03A)
1. LEFT-SPEAKER
2. GND-AUDIO
3. GND-AUDIO
4. RIGHT-SPEAKER
2. GND-AUDIO
3. GND-AUDIO
4. RIGHT-SPEAKER
SPEAKER -R
(TWEETER)
SPEAKER -L
(TWEETER)
[1316]
[1M95]
[1D38]
[1735]
[1G50]
[1G51]
[1M19]
TO DISPLAY
SUPPLY
[1M95]
SPEAKER
(SUBWOOFER)
[1308]
MAIN
SWITCH
INLET
MAIN UNIT
POWER UNIT
88
LC-32LE631
LC-40LE631
LC-46LE631
LC-40LE631
LC-46LE631
9.2. 40” Overall Wiring
Diagram
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
I
H
G
F
E
D
C
B
A
19100_807_110211.eps
1M19
(B09A)
1. LIGHT-SENSOR
2. GND
3. RC
4. LED-2
5. +3V3-STANDBY
6. LED-1
7. KEYBOARD
8. +5V
2. GND
3. RC
4. LED-2
5. +3V3-STANDBY
6. LED-1
7. KEYBOARD
8. +5V
1735
(B03A)
1. LEFT-SPEAKER
2. GND-AUDIO
3. GND-AUDIO
4. RIGHT-SPEAKER
2. GND-AUDIO
3. GND-AUDIO
4. RIGHT-SPEAKER
1D38
(B03A)
1. LEFT-SPEAKER
2. GND-AUDIO
3. RIGHT-SPEAKER
2. GND-AUDIO
3. RIGHT-SPEAKER
1M95
(B03C)
1. +3V3-STANDBY
2. STANDBY
3. GND
4. GND
5. +12VIN
6. +12VIN
7. +24V-AUDIO-POWER
8. GND
9. LAMP-ON
10. BACKLIGHT-PWM_BL-VS
11. BACKLIGHT-BOOST
12. POWER-OK
13. +24V
GND
2. STANDBY
3. GND
4. GND
5. +12VIN
6. +12VIN
7. +24V-AUDIO-POWER
8. GND
9. LAMP-ON
10. BACKLIGHT-PWM_BL-VS
11. BACKLIGHT-BOOST
12. POWER-OK
13. +24V
GND
1G51
(B06B)
1. +VDISP
2. +VDISP
3. +VDISP
4. +VDISP
|
|
51. CTRL-DISP
2. +VDISP
3. +VDISP
4. +VDISP
|
|
51. CTRL-DISP
1308
(PSU)
1. N
2. L
2. L
1M95
(PSU)
1. +3V3STDBY
2. STANDBY
3. GND
4. GND
5. +12V
6. +12V
7. +VSND
8. GND_SND
9. BL-ON-OFF
10. BL-DIM1
11. BL-I-CTRL
12. POK
13. +24V
14. GND1
2. STANDBY
3. GND
4. GND
5. +12V
6. +12V
7. +VSND
8. GND_SND
9. BL-ON-OFF
10. BL-DIM1
11. BL-I-CTRL
12. POK
13. +24V
14. GND1
1316
(PSU)
1. ANODE 1
2. NC
3. CATHODE 1
4. GND
5. ANODE 2
6. NC
7. CATHODE 2
8. NC
9. ANODE 3
10. NC
11. CATHODE 3
12. NC
13. ANODE 4
14. NC
15. CATHODE 4
2. NC
3. CATHODE 1
4. GND
5. ANODE 2
6. NC
7. CATHODE 2
8. NC
9. ANODE 3
10. NC
11. CATHODE 3
12. NC
13. ANODE 4
14. NC
15. CATHODE 4
[1M19]
SPEAKER -R
(TWEETER)
MAIN
SWITCH
INLET
SPEAKER -L
(TWEETER)
[1M95]
TO DISPLAY
SUPPLY
[
1M99
]
[1316]
[1308]
[1G50]
[1D38]
[1735]
[1G51]
SPEAKER
(SUBWOOFER)
MAIN UNIT
POWER UNIT
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