Magnavox CT270MW8 A, Руководство по обслуживанию

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1-10-10
Digital Signal Process Block Diagram
T3251BLD
C1
6
D1
8
A1
7
B1
5
D
VD-LD
8
CD-LD
10
PD-MONI
7
FS(+)
2
FS(-)
3
TS(+)
1
TS(-)
4
CN201 CN201 CN201
IC201 (SW)
IC101
(MICR
O CONTR
OLLER)
FS
FS(+)
CD/D
VD
FS(-)
TS(+)
TS(-)
TS
DETECT
OR
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
RF SIGNAL PR
OCESS
CIRCUIT
D
VD/CD
FORMA
TTER
A
UDIO
I/F VIDEO I/F
NTSC/P
AL
ENCODER
DMA BCU
INST
.
RO
M
32BIT CPU
D
ATA
RAM
INTERR
UPT
CONTR
OLLER
W
A
TCH DOG
TIMER
CPU I/F
TIMER
DECODER I/F
CPU I/F
READ MEMOR
Y
D
ATA
RAM
DSP DECODER
I/O PR
OCESSOR
INST
.
RO
M
D
ATA
RAM INST
.
RO
M
SERIAL
GENERAL I/O INTERR
UPT
CONTR
OLLER
TIMER W
A
TCH DOG
TIMER REMO
TE
CONTR
OL
32BIT CPU
STREAM I/F
EXTERNAL MEMOR
Y
I/F
SDRAM
ECC
UMA
C
100 115 116 113 114 106 104 105 103 62
DEB
UG
BCU
INST CA
CHE
D
ATA
CA
CHE
152 151 146 144
SDRAM ADDRESS(0-10)
IC103
(FLASH R
OM)
FLASH RO
M
29 36 38 45
~ ~
D
VD VIDEO
SIGNAL
FDQ (0-15)
~
1 9
16 25 48
~
F
ADR (0-19)
SDRAM D
A
T
A(0-15)
PICK-UP UNIT
T
O
SYSTEM
CONTR
O
L/SER
V
O
BLOCK DIA
GRAM
D
VD MAIN CB
A UNIT
IC503
(SDRAM)
SDRAM D
A
T
A(0-15)
SDRAM ADDRESS(0-10)
194 209
~
2
12 39 49
~
~
20 24 27 32
~ ~
159 178
~
99 98 97
21~30
34~42
212
1~4
7~14
17~18
215~216
A
UDIO D/A
CONVER
TER
131
D/A D/A
139
Y C
TO TV PR
OCESS
BLOCK DIA
GRAM
<TV/VCR SECTION> CN2
CN2A
8
D
VD-Y
6
D
VD-C
CN2A
T
O
A
UDIO
BLOCK DIA
GRAM
<TV/VCR SECTION> CN2
1
SPDIF
4
D
VD-A
UDIO(L)
3
D
VD-A
UDIO(R)
9
D
VD-A
UDIO-MUTE
D
VD A
UDIO SIGNAL