Philips 20MC4304, Service Manual

Page: 15 / 316

1-4-1
BLOCK DIAGRAMS < TV/VCR Section >
Servo/System Control Block Diagram
TD901BLS
CONTR
OL
HEAD
CL1402
AC HEAD ASSEMBLY
MAIN CBA
POWER SUPPLY / AV CBA
RF-SW
T-REEL
DV-SYNC
C-SYNC
C-SYNC
V-ENV
CTL(+)
D1224 S-LED D1204 REC D1216 DVD
D1217 TV/VCR
Q1210 Q1211 Q1207
P-ON+5V
REC-LED KEY0
RS1201
REMOTE SENSOR
KEY1 DVD-H TV/VCR-LED RESET
ROTA
D-REC-H
D-REC-H
REC-SAFETY
A-MUTE
SCL
REMOTE
SDA
A-MUTE
CTL(-)
RF-SW
DV-SYNC
V-ENV
ROTA
IC1201 (SERVO/SYSTEM CONTROL)
AL+5V
AL+5V
94 95 80 34
18 15 10 13 74 33
8
44 65 72
CTL-AMP-OUT DVD-REMOTE
97
CTL-AMP-OUT
TP1201
(DECK
ASSEMBLY
)
Servo/System Control Block Diagram
T-REEL
Q1206
Q1205
RESET
TIMER+5V
ST/SAP-MODE
4
NORMAL-H
22 28
EXT-H
29
RENTAL
30
SPL-PLAY
SP/LP/SLP
EXT-H
RENTAL
SPL-PLAY
32
REC/EE/PB
REC/EE/PB
27
VOL-CONT
VOL-CONT
11
EXT-H
A-MUTE
JACK-MUTE
JACK-MUTE
DVD-MAIN-POWER
67
SW1211
REC SAFETY
TO VIDEO BLOCK TO AUDIO BLOCK TO Hi-Fi AUDIO BLOCK
SCL
(MEMORY)
SDA
6 5
P-DOWN
84
P-ON-H
P-DOWN
P-ON-H
31
LD-SW
1
I 2
C-OPEN
45 71
AL+5V
SW1212 LD-SW
CS
7
TO POWER SUPPLY BLOCK
SDA SCL
TO CHROMA BLOCK
IC1202
WF3
ENV-DET
17
V-H-SW
ENV-DET
V-H-SW
16
SDA
SCL
Hi-Fi-H-SW
ST/SAP-IN
NORMAL-H
DVD-MAIN-POWER
Hi-Fi-H-SW
19
26 48 21
DVD-H
DVD-A-MUTE
42
5
KEY SWITCH
SW1201 SW1203, SW1206 SW1210
55
KEY1
CN2805 CN2803
CN1805
KEY SWITCH
SW2401 SW2408
14
25
12
SDATA
12
20
SD
A
T
A
TO DVD SYSTEM CONTROL /SERVO BLOCK <DVD SECTION> CN401
CN2402
6
CN1804
13
SCLK
14
CS
15
DVD-REMOTE
M
1
P-ON+12V(2)
5
C-CONT
6
FG-GND
7
LD-CONT
CAPSTAN MOTOR
CAPSTAN MOTOR
P-ON+5V D/L+15V P-ON+12V
10
M-GND
11
D/L+12V
9
D-PFG
12
D/L+15V
END-SENS.
Q201
SENSOR CBA
(END-SENSOR)
ST-SENS.
Q202
SENSOR CBA (ST-SENSOR)
21
SCLK
18
CS
22
D
V
D-REMO
TE
52 51 50
SDATA SCLK CS
69
DVD-A-MUTE
5
CTL(+)
6
CTL(-)
8
D-CONT
4
C-F/R
3
C-FG
2
P-ON+5V(3)
66 87 76 82 77 90
C-F/R C-FG C-CONT LD-CONT D-CONT D-PFG
CL1201
M
LOADING MOTOR
CYLINDER ASSEMBLY
M
DRUM MOTOR
PG SENSOR
9 7
ST-SENS. END-SENS.
13 14 15
AFT
AFT
D-REC-H
SP/LP/SLP
FUNCTION CBA
Q2621 Q2622 Q2623
NO
TE FOR
WIRE CONNECT
ORS:
1.
PREFIX SYMBOL "CN" MEANS CONNECT
OR.
(CAN DISCONNECT AND RECONNECT
.)
2.
PREFIX SYMBOL "CL" MEANS
WIRE-SOLDER
HOLES OF
THE PCB
.
(WIRE IS SOLDERED DIRECTL
Y
.)
TEST POINT INFORMA
TION
:INDICA
TES A
TEST POINT
WITH A JUMPER
WIRE A
C
R
O
SS A HOLE IN
THE PCB
.
:USED
T
O
INDICA
TE A
TEST POINT
WITH A COMPONENT LEAD ON FOIL SIDE.
:USED
T
O
INDICA
TE A
TEST POINT
WITH NO
TEST PIN.
:USED
T
O
INDICA
TE A
TEST POINT
WITH A
TEST PIN.