IC561
(FIP DRIVER)
Q562
Q563
Q564
Q565
DRV-DATA
DRV-STB
DRV-CLK
FP561
FIP
CAS-LED
TIMER-LED
REC-LED
G1
G2
G3
G4
G5
G6
S1
S2
S7
S8
S9
S10
26
25
24
POWER-LED
23
D565 REC
D564 TIMER
D563 CAS
D562 POWER
D561 STAND-BY
+5V
23
22
21
2
22
1
20
13
14
16
17
19
18
7
8
VIDEO (R)-1 HEAD
CYLINDER ASSEMBLY
VIDEO (L)-1 HEAD
V(R)-1
V-COM
V(L)-1
CL253
1
2
3
10
Video Block Diagram
1-10-3
1-10-4
HE274BLV
(DECK ASSEMBLY)
VIDEO (L)-2 HEAD
VIDEO (R)-2 HEAD
V(L)-2
V-COM
V(R)-2
4
5
6
BUFFER
Q305
BUFFER
Q308
C-SYNC
C-SYNC
TUNER
LINE
C-ROTA
TU701
VIDEO
TP751
V-OUT
6
TU-VIDEO
JK752
V-IN
24
FBC
VXO
Y/C
MIX
PIC-CTL
ANR
KILL
B.D.
AMP
NOISE
CANCEL
M
DE EMPA
CCD 1H
DELAY
1/2
Y-LPF
CLAMP
R
L
REC FM
AGC
PB FM
AGC
FM
DEMOD.
DOUBLE
LIMIT
V/I
CONV
SUB
LPF
SERIAL
DECORDER
11
93
V-ENV
RF-SW
FROM/TO
SERVO/SYSTEM
CONTROL BLOCK
C-ROTA
H-A-SW
H-A-COMP
ENV DET
COMP
OUT
TP502
RF-SW
FROM/TO
SERVO/SYSTEM
CONTROL BLOCK
IIC-BUS SDA
IIC-BUS SCL
C-LPF
R P
R
P
R
P
R
P
R
P
DOC YNR Y/C COMB
ACC
B-UP
AMP
MAIN
CONV
R
R
P
P
R
P
SUB
CONV
4.43MHz
629KHz
21
24 23
20
IC301
(Y/C PROCESS)
29
67 66
49
X302
4.43MHz
43
45
46
41
Q307
BUFFER
Q304
BUFFER
88
89
90
91
L
SP
EP
R
82
83
84
85
72
71
57
59
54 52 51 61
28
D-V SYNC
D-V SYNC
27
36
17
19
18
MAP
BPF
BPF
D.E.
NL
EMPHA
C-COMB
COMB
AMP
CCD
LPF
BPF
KIL
Q302, Q303
PEAKING
AMP
32
31
EE
AGC
REC
FM-EQ
PB
FM-EQ
FM
MOD
DETAIL
ENH
W/D
CLIP
CLAMP
MAIN CBA
94
74
WF2
WF1
TP301
C-PB
WF3
38
JK751
V-OUT
JK753
V-IN-F
34
REC-VIDEO SIGNAL PB-VIDEO SIGNAL MODE: SP/REC
" " = SMD
NOTE FOR WIRE CONNECTORS:
1. PREFIX SYMBOL "CN" MEANS CONNECTOR.
(CAN DISCONNECT AND RECONNECT.)
2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER
HOLES OF THE PCB.
(WIRE IS SOLDERED DIRECTLY.)
TEST POINT INFORMATION
:INDICATES A TEST POINT WITH A JUMPER WIRE ACROSS A HOLE IN THE PCB.
:USED TO INDICATE A TEST POINT WITH A COMPONENT LEAD ON FOIL SIDE.
:USED TO INDICATE A TEST POINT WITH NO TEST PIN.
:USED TO INDICATE A TEST POINT WITH A TEST PIN.
D-REC-H
D-REC-H
30
FROM/TO
SERVO
/SYSTEM
CONTROL
BLOCK
C,D
C,D
Comparison Chart of
Models & Marks
Model
Mark
VR340/55
VR340/75
VR740/55
A
B
C
VR740/75
D
IC501
(OSD)
50
55
52
OSD
CHARACTER
MIX
COLOR
-IN
A,C