Philips LC3141 Service Manual - Page 6

Scaler / Framebuffer / Microprocessor - lamp

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S4 SCALER / FRAMEBUFFER / MICROPROCESSOR LC3131/LC3141 5-3 7510 7511 AM29LV800 CY62127 7501 + FLASH ROM S5 RAM ST24E16 EEPROM 7300 PW166 SDA SCL B2 A1 D6 ROM/RAM INT I/O PORTS + RXD TXD +3V3 B4 C1 D3 UART C7 C3 +2V5 UV YUV VIDEO µPROC. PROC. Y RGB CVLIDOECOK PGREONC. W13 Y13 MCKEXT TO S6 DCKEXT R G B GVS GHS VVS VHS DATA PROC. J17 SYNC G19 DEC AUTO IMAGE A14 B14 FRAME BUFFER SCALER MEMORY CONTROL OSD COLOUR LUT OUTPUT SYNC U13 V13 W12 D4 DRE DGE DBE HD VD CKD CL 26645004_030.eps 130502 5-4 LC3131/LC3141 S11 UPSTREAM +3V3 7108 PD1USBH11 9 31, 32 +5 7102 FXO-31 4 OSC 3 6 2 18, 19 17 20 I2C2 to S7 INTH11 to S7 S7 +5 7719 CY6264 28 RAM AD0-AD7 +5 7737 74HCT573 2 AU0-AU7 10 14 CLKOUT +5 7727 S87C654 30 37 38 1 P1-4 8 2,3 10,11 INTH11 to S11 INTUSB RC6 I2C5 I2C2 I/O PROCESSOR 18 KEYB0 15 20 KEYB5 21-25 42 43 16 KEYBOARD PS2 STANDBY STANDBY SENSE CL 26645004_032.eps 130502 S5 I2C + 7514 DS1621 8 2 TEMP 1 SENSE 4 S7 L V AUD R V AUD DATA AUD L DATA AUD R 7802 TRA7433 6 5 3 2 AUDIO PROCESSING +15 17 +14 7700 TDA7056 4 16 15 I2C 18 SCL5 19 SDA5 6 20 CL 26645004_031.eps 160402 PROTECTION CIRCUITS SSB Lamp Lit Lamp on Temp Temp switch standby standby sense µP standby Lamp fan stop LCD fan stop PCS fan stop DF(dustfilter)-det. T fancontrol Supply Fan control dust filter switch PCS 107 368 PCS 107 369 Supply board Fan Main Fan LCD PCS fan CL 26645004_033.eps 130502

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LC3131/LC3141
LC3131/LC3141
5-3
5-4
PCS 107 368
PCS 107 369
CL 26645004_032.eps
130502
S11
S7
S7
S11
S7
+5
28
+5
2
30
37
7719
CY6264
14
15
10
CLKOUT
RAM
7727
S87C654
INTH11
to
INTUSB
7737
74HCT573
AD0-AD7
AU0-AU7
+5
38
16
I/O
PROCESSOR
KEYBOARD
RC6
8
I
2
C5
2,3
I
2
C2
10,11
1
P1-4
+3V3
9
7108
PD1USBH11
20
17
6
+5
4
7102
FXO-31
2
3
OSC
KEYB0
18
KEYB5
PS2
STANDBY
STANDBY SENSE
20
21-25
42
43
18, 19
I
2
C2
to
INTH11
to
31, 32
UPSTREAM
SSB
Lamp on
Lamp Lit
Temp
μP
standby
standby sense
standby
fancontrol
Supply
Temp
switch
Fan control
T
Supply board
Fan Main
LCD fan stop
PCS fan stop
DF(dustfilter)-det.
dust filter switch
Lamp fan stop
Fan LCD
PCS fan
CL 26645004_033.eps
130502
PROTECTION CIRCUITS
CL 26645004_030.eps
130502
S4
+2V5
+3V3
C3
7300
PW166
7510
AM29LV800
7511
CY62127
7501
ST24E16
DRE
DBE
FLASH ROM
RAM
EEPROM
DGE
UV
Y
R
G
B
I/O PORTS
UART
FRAME
BUFFER
SCALER
OSD
COLOUR
LUT
VIDEO
PROC.
DATA
PROC.
CLOCK
GEN
YUV
RGB
μPROC.
A1
D6
B4
SCL
C1
D3
C7
B2
SDA
TXD
RXD
MCKEXT
DCKEXT
W13
Y13
OUTPUT
SYNC
HD
VD
U13
V13
S6
S5
TO
CKD
W12
J17
G19
GVS
GHS
A14
B14
VVS
VHS
MEMORY
CONTROL
AUTO
IMAGE
SYNC
DEC
ROM/RAM INT
SCALER / FRAMEBUFFER / MICROPROCESSOR
D4
+
+
CL 26645004_031.eps
160402
S7
20
16
15
18
SCL5
SDA5
7802
TRA7433
L V AUD
6
3
R V AUD
DATA AUD L
DATA AUD R
5
2
+15
17
6
7700
TDA7056
AUDIO PROCESSING
+14
4
S5
4
2
1
I
2
C
I
2
C
TEMP
SENSE
7514
DS1621
+
8
19