Zenith DV140, Руководство по обслуживанию

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3-21
BLOCK DIAGRAMS
1. Overall Block Diagram
M
M
DISC
SP
INDLE
MOT
O
R
LO
A
D
ING
MO
T
O
R
D
V
D :
A,
B,
C,D,RF0
CD :
A,
B,C,
D,
E,F,RF0
MDI1
PIC
K
UP
KEY
In
put
B/
Pb
IC
502
M
X
29
LV800
T
/B
1M
8BI
T
FL
A
S
H R
O
M
ROMAD[0:
19]
ROMRD
ROMWR
MD[00:15]
FL FR
CVBS
R/
Pr
G/Y
RL RR
CE
N
T
E
R
WO
O
F
ER
TV_DAC[0:3]
Y C
L/R
FL FR
RL RR
CE
N
T
E
R
WO
O
F
ER
5V
A
C
90V~240V
50H
Z/60H
z
12V
27
M
H
z
5.6V
A
IC5
0
4
A
T
24C02
A
EE
PRO
M
IC30[
2,3.4]
KA
553
2
OP-A
M
P
RC
90
1
R/C
LOAD[+,-]
F[+,- ]
T[+,- ]
SPE[+ ,-]
SLED
(FEEDING)
MO
T
O
R
SL[+,-]
M
VD33
D
V33
A
VD18
A
/V
D
33
A
3V3M
/5V
MIC
R L
VIDEO BUFFER
R
S
232_TXD/MIC_D
E
CT
IECD AOUT
COAX
IA
LSPD
I
D2
_
T
[1
:3
]
SC
AR
T_
1
6
:9
RGB_
S
E
L
LD01,LD01,V20
5.6V
A
LIMI
T
TRIN TROU
T
ROMDAT A[0:7]
5V
IC
901
LED DRI
V
E
R
IR
POW
ER
BOARD
PO
WCT
L
H
DM
U
T
E
IIC/VFD/D
A
C
_
S
C
K
IC5
0
3
1M
16
B
IT
SDR
A
M
VD33
D
MA[00:11] DMCL
K
CS
J
BA
0
BA
1
DQM WE
J
CA
S
J
RA
S
J
IIC/VFD/D
A
C_TXD
IC501
MTK 1389D
+
12V
YC_ MIX
S
E
R[0:2],D
AC_ML1
TROP
EN ,TRCLOS
E,FOS
O,TRSO,F
MSO,DM
SO
DAC_
R
S
T
PICK _SEL , VR _C D,VR _D VD IOA
OP
+
,O
P
-
CN5
0
3
RS2
3
2
RS 232_RXD
3.3V 3.3V
A
IC3
0
1
C
S
4360
(6D
A
C)
IC2
0
1
IP
9
0
0
8
ST
B
Y
OPU_SE L
JA
C
K
DIG901
LED
IC
801
BA
330
8
+
12V
IC
601
AM
P
L/R
RX
D
VD
1
8
A