Philips LC4.31E Service Manual page 85

Circuit Diagrams and PWB Layouts
SSB .3: Audio Delay Line (PDP Only)
1 2
B04 AUDIO DELAY LINE (LIPSYNC)
F501
5501 1u0
+5VSWI +5VD
A
+5VD
COUNTER
2501 100n
7501
M74HC590T
16
14
7502
VCC
EN3 CY62256LL-70ZC
+5VD
13
C2
2V3
12
28
B G1 CTR8
2502 5V3
11 9 100n
(CT=255)Z4 4
1+
2V3 5V3
+5VD
10
CT=0 F502
5V3
15
2D 3
1
2V6
2 2V6
3
2V6
C
4 2V6
5
2V6
6 2V6
7
2V6
GND
8
+5VD
2503 100n
14 16
VCC
D EN3
13 5V3
C2
12
G1 CTR8
5V3
11 9
(CT=255)Z4 4
1+
2V3
+5VD
10
CT=0
5V3
15 2V6
2D 3
1
2V6
E
2
2V6
3 2V6
I503
4 2V6
4501
I504
5 2V6
4502
I505
6 2V6
4503 *
7
*
GND
8 LCD PDP
*
7503
F
4503 N Y
M74HC590T
4504 Y N
COUNTER
3139 123 6117.3
1 2
LC4.31E AA
3 4
14
I506
I507
3 4
7. EN 85
5 6 7
LATCH
7505
74HC573PW
5V3
1
EN
2V3 11
C1
2 2V6
1D
3
4
5
6
7
8
9
+5VD
3501
470R
7504
I501
2V3
BC847BW
I502
0V2
2509
2508
3502
82p 47K 82p
5 6 7
8 9
+5VD +5VD
LATCH
2504 2505
7506
100n 74HC573PW 100n
20 5V3 20
1
EN
2V3 11
C1
19 2 19 4507
1D
18 3 18 4508
17 4 17 4509
16 5 16 4510
15 6 15 4511
14 7 14 4512
13 8 13 4513
12 9 12 4514
10 10
8 9
10
2501 A2
2502 B2
B04
2503 D2
2504 B7
2505 B9
2506 C10
2507 D10
2508 F6
2509 F7
3501 F6
A
3502 F6
4501 E2
4502 F2
4503 F2
4504 F2
4505 F3
4506 F3
4507 C9
4508 C9
4509 C9
4510 C9
4511 C9
B
4512 C9
4513 C9
4514 C9
5501 A1
7501 A1
7502 B3
7503 F1
7504 F6
7505 B7
7506 B8
RES
F501 A2
RES
C
F502 B2
RES
RES F503 C10
RES
F504 D10
RES
F505 F10
RES
F503 I501 F5
I2SDI1
I502 F6
2V6
2506 I503 E2
330p
I504 E2
I505 F2
I506 E3
I507 E3
F504
I2SDO1
D
2507
470p
E
F
F505
I2SCLK
I_16213_004.eps
121108
10