Video Block Diagram - Philips VR540/39 Service Manual

Video Block Diagram

NOTE FOR WIRE CONNECTORS:
1. PREFIX SYMBOL "CN" MEANS CONNECTOR.
(CAN DISCONNECT AND RECONNECT.)
2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER
" " = SMD
HOLES OF THE PCB.
(WIRE IS SOLDERED DIRECTLY.)
MAIN CBA
Q351
TO V-IN1
SERVO/SYSTEM
TU-VIDEO
CONTROL BLOCK
TU701(TUNER UNIT)
VIDEO-IN 6
VIDEO-OUT 24
JACK CBA
JK101 CL101 CL151
Q101
V-OUT1 19 1 V-OUT1 1
BUFFER
20 3 V-IN1 3
V-IN1
JK102 CL102 CL152
Q102
1 1
V-OUT2 19 BUFFER V-OUT2
3 V-IN2 3
20
V-IN2
1-9-13
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.
FROM
IC501 (OSD)
SERVO/SYSTEM
CONTROL BLOCK
OSD
50
CHARACTER
52
MIX
COLOR
55
-IN
D,E,I,J,L,M
IC301
BUFFER (Y/C SIGNAL PROCESS) 65
TUNER
48 BYPASS
IN1
50
IN2
52
FRT
56 CHARA.
IN2
INS.
FRT
PB/EE
MUTE
TUNER
IN1
PB/EE
MUTE
FBC
WF1
J23
V-OUT
R
61
AGC
63
58 59
REC-VIDEO SIGNAL
DAVN-L
IIC-BUS SDA
IIC-BUS SCL
43 46 68 69 78 79
SERIAL
Y. DELAY
DECORDER
R P
LUMINANCE
SIGNAL
PROCESS
AGC
Y
CCD 1H DELAY
REC FM
+
AGC
1/2
C
CHROMINANCE
SIGNAL
PROCESS
R P R P
Y/C
MIX
P
VXO
28 29 25 21
TP301
X301
4.433619MHz C-PB
WF2
PB-VIDEO SIGNAL MODE: SP/REC
IC640 (VPS)
14 DAVN-L
6 IIC-BUS SDA
7 IIC-BUS SCL
16 VPS-V
F,G,H,I,J,K,L,M
CL253
96
V(R)-1
SP
SP
95 V-COM
HEAD
93 V(L)-1
AMP
EP
94 V(L)-2
V-COM
V(R)-2
90
EP
89
HEAD
88
AMP
WF1
87
TP502
RF-SW
D-REC-H
D-REC-H 80
RF-SW
C-ROTA
C-ROTA/RF-SW 70
D-V-SYNC
D-V-SYNC 62
H-A-SW
H-A-SW 71
H-A-COMP
H-A-COMP 83
V-ENV
V-ENV 84
C-SYNC
C-SYNC 67
TRICK-H
SECAM-H
PB-H OUT
IC370 (PAL/SECAM DECTECTOR)
44
28
1
29
PAL/SECAM
17
DETECTOR
14
18
2
16
1-9-14
Comparison Chart of
Models & Marks
Model Mark
VR540/39 D
VR540/58 E
VR740/02 F
VR740/07 G
VR740/16 H
VR740/39 I
VR740/58 J
VR742/16 K
VR742/39 L
VR742/58 M
(DECK ASSEMBLY)
CYLINDER ASSEMBLY
1
VIDEO (R)-1
2 HEAD
3
VIDEO (L)-1
HEAD
4
5
VIDEO (L)-2
HEAD
6
VIDEO (R)-2
HEAD
FROM/TO SERVO/SYSTEM
CONTROL BLOCK
D,I,L
HE473BLV