Philips LC4.9E Service Manual page 56

Circuit Diagrams and PWB Layouts
SSB: Audio Delay line (Reserved)
1 2
AUDIO DELAY LINE (RESERVED)
B4
F501
5501 1u0
+5VSWI +5VD
A
+5VD
COUNTER
2501 100n
7501
M74HC590T
16
14
VCC
EN3
+5VD
13
C2
2V3
12
G1 CTR8
B
2502
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
EN3
D
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
4503 * 2V6
7
GND
8 LCD PDP
7503 *
F
M74HC590T 4503 N Y
4504 Y N
COUNTER
3139 123 6093.1
1 2
LC4.9E AB
3 4
7502
CY62256LL-70ZC
28
5V3
*
3 4
7. 56
5 6 7
14
LATCH
7505
74HC573PW
1
2V3 11
2 2V6
3
4
5
6
7
8
9
+5VD
3501
470R
7504
I501
2V3
BC847BW
I502
0V2
2508 2509
3502
82p 47K 82p
5 6 7
8 9
+5VD +5VD
2504 LATCH 2505
7506
100n 74HC573PW 100n
5V3 20 5V3 20
1
EN EN
2V3 11
C1 C1
19 2 19 4507
1D 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
B4 2503 D2
2504 B8
2505 B9
2506 C10
2507 D10
2508 F6
2509 F7
3501 F6
3502 F6
4501 E2
A
4502 F2
4503 F2
4504 F3
4505 F3
4506 F3
4507 C9
4508 C9
4509 C9
4510 C9
4511 C9
4512 C9
4513 C9
B
4514 C9
5501 A1
7501 A1
7502 B3
7503 F1
7504 F6
7505 B7
7506 B8
F501 A2
F502 B2
RES
F503 C10
RES
C F504 D10
RES
RES F505 F10
RES
I501 F5
RES
I502 F6
RES
F503 I503 E2
I2SDI1
I504 E2
2V6
2506 I505 F2
330p
F504
I2SDO1
D
2507
470p
E
F
F505
I2SCLK
F_15430_004.eps
140405
10