Magnavox 20MC4304/17, Руководство по обслуживанию

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1-10-9
Digital Signal Process Block Diagram
T1102BLD
149
C1
6
D1
8
A1
7
B1
5
E1
4
F1
2
D
V
D-LD
8
CD-LD
10
PD-MONI
7
FS(+)
2
FS(-)
3
TS(+)
1
TS(-)
4
CN201 CN201 CN201
IC201 (SW)
IC503
(SDRAM)
IC101
(MICR
O CONTR
OLLER)
FS
FS(+)
CD/D
VD
FS(-)
TS(+)
TS(-)
TS
PICK-UP UNIT
DETECT
O
R
CD/D
VD
19
Q251,Q252
CD
D
V
D
AMP
Q253,Q254
AMP
4
1
3
6
GND(D
VD-PD)
6
GND(CD-PD)
5
GND(LD)
9
T
O
D
V
D SYSTEM
CONTR
OL/SER
V
O
BLOCK DIA
GRAM
RF SIGNAL PR
OCESS
CIRCUIT
D
V
D/CD
FORMA
TTER
AU
D
IO
I/F VIDEO I/F
NTSC/P
AL
ENCODER
DMA BCU
INST
.
RO
M
32BIT CPU
DA
T
A
RAM
INTERR
UPT
CONTR
OLLER
W
A
TCH DOG
TIMER
CPU I/F
TIMER
DECODER I/F
CPU I/F
READ MEMOR
Y
DA
T
A
RAM
DSP DECODER
I/O PR
OCESSOR
INST
.
RO
M
DA
T
A
RAM INST
.
RO
M
SERIAL
D/A
GENERAL I/O INTERR
UPT
CONTR
OLLER
TIMER W
A
TCH DOG
TIMER REMO
T
E
CONTR
OL 32BIT CPU
STREAM I/F
EXTERNAL MEMOR
Y
I/F
SDRAM
ECC
UMA
C
114 115 116 117 132 131 134 133 129 130 126 124 125 123 83
DEB
UG
BCU
INST RAM
DA
T
A
RAM
D/A
TO TV PR
OCESS
BLOCK DIA
GRAM
<TV/VCR SECTION> CN2
158
Y C
CN2A
TO
D
V
D
AU
D
IO
BLOCK DIA
GRAM
177
SPDIF
170
PCM-BCK
171
PCM-D
A
T
A
169
PCM-LRCLK
23~51
SDRAM D
A
T
A
(0-15)
SDRAM ADDRESS(0-11)
SDRAM ADDRESS(0-11)
217 238
~
1
18 252 256
~ ~
2
13 42 53
~ ~
IC103
(FLASH R
O
M)
FLASH RO
M
29 36 38 45
~ ~
D
VD MAIN CB
A UNIT
22 26 29 35
~ ~
FDQ (0-15)
~
1 9
16 25 48
~
192~212
F
A
DR (0-19)
SDRAM D
A
T
A
(0-15)
1D
V
D
-Y
3D
V
D
-C
D
A
T
A(VIDEO/A
UDIO) SIGNAL
D
V
D
VIDEO SIGNAL
D
A
T
A(A
UDIO) SIGNAL
“
“ = SMD
NO
TE FOR
WIRE CONNECT
ORS:
1.
PREFIX SYMBOL "CN" MEANS CONNECT
OR.
(CAN DISCONNECT AND RECONNECT
.)
2.
PREFIX SYMBOL "CL" MEANS
WIRE-SOLDER
HOLES OF
THE PCB
.
(WIRE IS SOLDERED DIRECTL
Y
.)