Sony PLM-A55E Service Manual page 52

PLM-A55
• IC Block Diagrams
IC504 BA3574BFS-E2 (SA-52P Board) IC501 M5222FP-E1 (SA-52P Board)
MUTE SW 11 MUTE 10 MUTE OUT1 1 8 VCC
9 LP
7 OUT2
BB SW 8 MUTE SW
IN1 2
7 AVC
INH 3 6 IN2
PW SW 12 P.SW
AVC DET
GND 4 5 CONT
IN 1 13 6 AVC IN
5 MIX OUT
IN 2 14
OUT 1
4
BIAS OUT 15
BIAS IN 16
RF OUT 17 3 VREF
RIPPLE
FILTER
2 OUT 2
RF IN 18
BEEP IN 19
BEEP
1 GND
V 20
CC
IC101 µPD6454GT-628-E3 (YM-11P Board)
24 23 22 21 20 19 18 17 16 15
vco
SYNC
MODE
SIGNAL
SWITCHING
GENERATOR
VERTICAL VERTICAL VERTICAL
SIZE POSITION ADDRESS
SYNC
COUNTER COUNTER COUNTER
PROTECTION
SEPARATOR
CIRCUIT
VERTICAL
ADDRESS
REGISTER
TIMING
GENERATOR
CHARACTER
VIDEO RAM
GENERATOR ROM
12 x 18 BIT
HORIZONTAL HORIZONTAL HORIZONTAL
CHARACTER
x
SIZE POSITION ADDRESS
DATA
256 WORD
COUNTER COUNTER COUNTER
8 BIT x 288 WORD
BLINKING
BACKGROUND
CHARACTER HORIZONTAL WRITE DATA
CONTROLLER
SIZE ADDRESS ADDRESS 1 BIT x 288 WORD
DATA
REGISTER REGISTER COUNTER
REGISTER
DISPLAY
CONTROLLER
DATA
REGISTER
DATA INPUT EXTERNAL/ CRYSTAL
SHIFT INSTRUCTION CONTROL NTSC/PAL OSCILLATOR
SHIFT INTERNAL OSCILLATOR
REGISTER DECODER SIGNAL REGISTER CIRCUIT
REGISTER REGISTER CIRCUIT
RESET
1 2 3 4 5 6 7 8 9 10 11 12
– 75 –
IC103 MC141628FUEB (YM-11P Board)
24 23 22 21 20 19 18 17
TB3 25
A/D CONVERTER 16 CLC
CLAMP
TB2 26
TB1 27 15 ADVDD
CONTROL
CONTROL
TB0 28 14 ADGND
LOGIC LOGIC
13 PLL SEL
2H/1H 12 BYPASS
APCF-I
11 PAL/NTSC
PROCESSING
10 TEST
CLK IN 29
CONTROL
LOGIC
DVDD 30
BIAS 9 IBIAS
CLOCK D/A
PCOUT 31
GENERATOR CONVERTER
DGND 32
1 2 3 4 5 6 7 8
IC201 CXA1950Q-T4 (YM-11P Board)
14 13
24 23 22 21 20 19 18 17
SIGNAL
SHP VCLP VSL
AMP
SYNC PULSE
SYNC
SEPARATOR GENERATOR
CIRCUIT
VCC1 25
YCLP
GND1 26
27
SHPCTL
BLK ACK
SHPF0 28
TPADJ 29
ACK
CADJ 30
DET
BURST
CHROMA
PAL ID
GATE
AMP
DL
AMP
FF ADD/SUB
SWITCH
ACC
ACCTC 31 SW
ACC INV
DET
G-Y
CIN 32 SW MIX
DEM
0° R-Y
HUE PG
MIX
B-Y
APC VXO
1 2 3 4 5 6 7 8
– 76 –
IC202 MB88346BPFV-EF (YM-11P Board)
IC402 MB88346BPFV-EF (RG-46P Board)
VSS 1
8 BIT
D/A CONVERTER
2
A03
8 BIT
D/A CONVERTER
A04 3
8 BIT
D/A CONVERTER
A05 4
8 BIT
D/A CONVERTER
A06 5
8 BIT
D/A CONVERTER
A07 6
16 BF
SYNC
15
8 BIT
D/A CONVERTER
14 DLABIAS
A08 7
13 ACKTC
8 BIT
12 COUT
D/A CONVERTER
11 DLAIN
A09 8
8 BIT
D/A CONVERTER
R/R-Y
10
9 G/Y
A010 9
VDD 10
IC301 MB3785APFV-G-BND-ER (YM-11P Board)
20 GND
12
8 BIT 8 BIT
1 D0-D7 LATCH D/A CONVERTER CD2 37
8 BIT 38
LATCH D0-D7
39
19 40
A02
11
41
8 BIT 8 BIT
2 LATCH D/A CONVERTER
D0-D7
42
8 BIT
LATCH
D0-D7
43
44
45
18 A01
46
47
3
8 BIT
CA2 48
LATCH D0-D7
17 DI
4
8 BIT
LATCH
D0-D7
16 CLK
5
8 BIT
LATCH D0-D7
15 LD
6
D0
8 BIT
LATCH
D0-D7 D1
D2
14 D0
D3 10
8 BIT 8 BIT
7 D4 D0-D7 LATCH D/A CONVERTER
8 BIT
LATCH D0-D7 D5
D6
13 A012
D7 9
8 BIT 8 BIT
8 LATCH D/A CONVERTER
D8 D0-D7
8 BIT
LATCH D0-D7
D9
ADDRESS
DECORDER
1-12
D10
12 A011
D11
11 VCC
– 77 –
36 35 34 33 32 31 30 29 28 27 26 25
24 SCP:C
D C
23 CT SCP
22 CTL C/D
D
RE
21 CTL B
20 POWER CONT
D C
+2.5V
C
VOLTAGE
RE 19
REFERENCE
18 V
CC
SAW
CT 17
RT 16
B OSC
XTAL 15
RE
A B XTAL 14
13 SCP:B
A
RE
A B
1 2 3 4 5 6 7 8 9 10 11 12
– 78 –