Ic Block Diagrams - Sony SCD-C555ES Service Manual

SCD-C555ES
• Waveforms
– RF Board – – MAIN Board –
1 IC001 el (TE) (CD PLAY) 1 IC901 r; (XTAL)
Approx.
100 mVp-p
2 IC001 r; (FE) (CD PLAY) 2 IC509 t; (RFAC) (CD PLAY)
Approx.
60 mVp-p
3 IC001 tj (RFAC) (CD PLAY)
Approx.
1.4 Vp-p
4 Vp-p
20 MHz
Approx.
1.4 Vp-p

4-25. IC BLOCK DIAGRAMS

IC304 SN74LV157APWR (AUDIO BOARD)
VCC STROEE 4A 4B 4Y
16 15 14 13 12
O 4A 4B 4Y
S
1A
1B 1Y 2Y
1 2 3 4 5
SELECT 1A 1B 1Y 2A
IC1001 LC75721E (DISPLAY BOARD)
AM1 1
AM2 2
AM3 3
AM4 4
AM5 5
AM6
6
AM7 7
AM8 8
AM9 9
AM10 10
AM11 11
AM12 12
AM13 13
AM14 14
AM15 15
AM16 16
40 40
IC11 BA6780 (JUNCTION BOARD)
1
VIN1
FIN1 2
3A 3B 3Y
11 10 9
3
RIN1
3A 3B
IOUT
4
3Y
VREF 5
2B 2Y
6 7 8
VREG 6
2B 2Y GND
VCC 7
8
OUT1+
9
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
CONTROL
TIMING
OSC DIVIDER
GENERATOR
SHIFT
REGISTER
DC RAM
LATCH
AD
CG RAM
RAM
CG ROM
LATCH DECODER
ANODE/GRID DRIVER
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
18
VIN2
17
FIN2
16
RIN2
15
CT2
14
VEE
13 FBIN-
12
FBIN+
11
OUT2+
10
OUT2-
G7
48
47 G8
G9
46
45 G10
44 G11
43 AA8/G12
42 AA7/G13
41 AA6/G14
AA5/G15
40
39 AA4/G16
38 AA3
37 AA2
36 AA1
35 AM35
34 AM34
33 AM33