FUNAI W4A-A4180DB, Service Manual

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1-11-3
Video Block Diagram
E9G00BLV
IIC-B
US SD
A
IIC-B
US SCL
CYLINDER ASSEMBLY
VIDEO(R)-1
VIDEO-COM
VIDEO(L)-1
CN251
1 2 3
(DECK ASSEMBLY)
VIDEO (R)-1 HEAD
SP HEAD AMP EP HEAD AMP
REC FM AGC
TO SERVO/SYSTEM CONTROL BLOCK DIAGRAM
TO SERVO/SYSTEM CONTROL BLOCK DIAGRAM
TO VIDEO INPUT SELECT BLOCK DIAGRAM
RF-SW
D-REC-H
C-ROTA
D-V-SYNC
H-A-SW
H-A-COMP
V-ENV
LUMINANCE SIGNAL PROCESS
CHROMINANCE SIGNAL PROCESS
V-ENV
H-A-COMP
H-A-SW
D-V-SYNC
RF-SW/C-ROTA
VIDEO (L)-1 HEAD VIDEO (L)-2 HEAD VIDEO (R)-2 HEAD
VIDEO(L)-2
VIDEO-COM
VIDEO(R)-2
4 5 6
IC301
VIDEO SIGNAL PROCESS /HEAD AMP
IC501
(OSD)
VCR-VIDEO VCR-VIDEO(DUB)
(VCR DVD DUBBING)
DVD-VIDEO(DUB) PB/EE-VIDEO
REC-VIDEO SIGNAL
SERIAL
DECORDER
48 50
50
52
96 95 94 93 90 89 88 87
CHARA. INS.
CCD 1H DELAY
SP
BYPASS
DVD VCR
AGC
P
R
R Y C
P
RP
R
P
EP
Y. DELAY
Y/C MIX
+
21 79
78
AGC
VXO
OSD CHARACTER MIX
FBC
1/2
58
59 65
29
28
69
68
46
43
84 83 71 62 70
D-REC-H
80
TP301
C-PB
WF2
TP504
RF-SW
WF1
X301
4.43MHz
C-SYNC
C-SYNC
67
MODE: SP/REC
PB-VIDEO SIGNAL
TO VIDEO INPUT SELECT BLOCK DIAGRAM TO VIDEO OUTPUT SELECT BLOCK DIAGRAM
(DVD VCR DUBBING)
DVD PB
Q301
VCR PB
55
COLOR -IN
MAIN CB
A
C
Comparison Char
t of
Models & Marks
Model
Mark
W4A-A4180DB
W4A-D4180DB W4D-D4180DB
A C B