Block Diagrams - Philips VR-540-02 Service Manual

Servo/System Control Block Diagram
Q504
ST-S
SENSOR CBA
Q505
END-S
SENSOR CBA
(DECK ASSEMBLY)
AC HEAD ASSEMBLY
CL287 CL504
CONTROL 5 CTL(+) 5
HEAD
6 CTL(-) 6
CYLINDER ASSEMBLY
PG
SENSOR
DRUM
M
MOTOR
M
LOADING
MOTOR

BLOCK DIAGRAMS

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
SW507
LD-SW
AL+5V
TP505 Q503 PS503
END-S
T-REEL S-REEL
P-ON+5V
IC771
(COMPARATOR)
TU-VIDEO
9
FROM
8
VIDEO
BLOCK
V-IN1
11
10
VR501
SW-POINT
CAPSTAN MOTOR
CL502
12 P-ON+15V
CAPSTAN
M
11 AL+12V(2)
MOTOR
10 GND
9 D-PG
8 D-CONT
7 LM-FWD/REV
6 GND
5 C-CONT
4 C-F/R
3 C-FG
2 P-ON+5V
1 AL+12V/+20.5V
1-9-1
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.
IC501
AL+5V
(SERVO/SYSTEM CONTROL)
RS501
REMOTE
D502
14 REMOCON-IN
SENSOR
S-LED
9 LD-SW
95 CTL(+)
94 CTL(-)
10 ST-S
4 END-S
80 T-REEL
79 S-REEL
Q501
TIMER+5V RESET 34 RESET
P-ON+5V
Q771,
14
Q772
AND 4
2 64 FTV-IN
5
13
AL+5V
2 PG-DELAY
AL+5V 31 REC-SAF-SW
SW506
REC-SAFETY
P-ON+15V
AL+12V
90 D-PG
77 D-CONT
81 LM-FWD/REV
76 C-CONT
78 C-F/R
87 C-FG
P-ON+5V
AL+12V/+20.5V
C-POW-SW
FROM/TO
66 C-POW-SW
POWER P-ON-H
P-ON-H
67
SUPPLY
P-DOWN-L
BLOCK 86 P-DOWN-L
TP507
SENS-INH
KEY
KEY- 1 7
SWITCH
KEY- 2 8
KEY
SWITCH
FP562
IC561
LED CLOCK
(FIP DRIVE)
DRV-DATA 68 28 DRV-DATA G1 23
DRV-STB 69 2 DRV-STB G2 22
DRV-CLK 70 1 DRV-CLK G3 21
G4
20
S1 7
S2 8
S7 13
S8 14
S9 16
S10 17
A-MUTE-H 83
Hi-Fi-H-SW 19
A-MODE 32
LINE-MUTE 28
IIC-BUS SDA 72
IIC-BUS SCL 71
D-REC-H 33
RF-SW 18
C-ROTA
15
D-V SYNC 13
H-A-SW 16
H-A-COMP 17
V-ENV 6
C-SYNC 58
1-9-2
TU701(TUNER UNIT)
3 SDA
12 SDA
5 SCL
11 SCL
IC503 (MEMORY)
5 SDA
6 SCL
IIC-BUS SDA
IIC-BUS SCL TO
AUDIO BLOCK
A-MUTE-H
IIC-BUS SDA
IIC-BUS SCL
FROM/TO
Hi-Fi-H-SW Hi-Fi AUDIO
BLOCK
A-MODE
LINE-MUTE
IIC-BUS SDA
IIC-BUS SCL
D-REC-H
RF-SW
C-ROTA
D-V SYNC
FROM/TO
H-A-SW VIDEO BLOCK
H-A-COMP
V-ENV
C-SYNC
HE470BLS