Philips LC4.9E Service Manual page 89

Circuit Diagrams and PWB Layouts
SSB: Audio Delay Line (Lipsync)
1 2
AUDIO DELAY LINE (LIPSYNC)
B4
F501
5501 1u0
A +5VSWI +5VD
+5VD
COUNTER
2501 100n
7501
M74HC590T
16
14
7502
VCC
EN3 CY62256LL-70ZC
+5VD
13
C2
2V3
12
B
28
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
D
VCC
EN3
13 5V3
C2
12
G1 CTR8
5V3
11 9
1+ (CT=255)Z4 4
2V3
+5VD
10
CT=0
5V3
15 2V6
2D 3
E
1 2V6
2
2V6
3 2V6
I503
4 2V6
4501
I504
5
4502 2V6
I505
6 4503 * 2V6
7
*
GND
F
8 * LCD PDP
7503
M74HC590T 4503 N Y
4504 Y N
COUNTER
3139 123 6141.1
1 2
LC4.9E AB 7.
3 4 5
14
3 4 5
89
6 7
+5VD
LATCH
2504
7505
74HC573PW 100n
5V3 20
1
EN
2V3 11
C1
2 2V6 19
1D
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10
+5VD
3501
470R
7504
I501
2V3
BC847BW
I502
0V2
2508 2509
3502
82p 47K 82p
6 7
8 9 10
+5VD
LATCH 2505
7506
74HC573PW 100n
5V3 20
1
EN
2V3 11
C1
2 19 4507 RES
1D
3 18 4508 RES
4 17 4509 RES
5 16 4510 RES
6 15 4511 RES
7 14 4512 RES
8 13 4513 RES
F503
9 12 4514 I2SDI1
2V6
10
2506
330p
F504
I2SDO1
2507
470p
F505
I2SCLK
G_15351_004.eps
8 9 10
2501 A1
2502 B2
B4
2503 D1
2504 B7
2505 B9
2506 D10
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
B
4511 C9
4512 C9
4513 C9
4514 C9
5501 A1
7501 A1
7502 B3
7503 F1
7504 F6
7505 C7
7506 C8
F501 A2
C
F502 B2
F503 C10
F504 D10
F505 F10
I501 F5
I502 F6
I503 E2
I504 F2
I505 F2
D
E
F
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