Philips 20MC4304, Service Manual

Page: 302 / 316

1-10-1
BLOCK DIAGRAMS < TV/VCR Section >
[ 20MC4304/17 (Fourth Generation) ]
T1102MCBLS
System Control / Servo Block Diagram
CONTR
OL
HEAD
CL1402
ACE HEAD ASSEMBLY
MAIN CBA
SUB CBA
RF-SW
T-REEL
DV-SYNC
C-SYNC
C-SYNC
V-ENV
CTL(+)
D1224 S-LED D1204 REC D1216 DVD D1217
TV/VCR
P-ON+5V
REC-LED KEY0
RS1201
REMOTE SENSOR
KEY1 DVD-LED TV/VCR-LED RESET
ROTA
D-REC-H
D-REC-H
REC-SAFETY AUDIO-MUTE
SCL
REMOTE
SDA
Hi-Fi 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
TP1202
(DECK
ASSEMBLY
)
T-REEL
Q1206
Q1205
RESET
TIMER+5V
ST/SAP-IN
4
NORMAL-H
22 70
YCA-SDA
68
YCA-CS
69
YCA-SCL
YCA-SDA
YCA-CS
SP-MUTE
SP-MUTE
12
YCA-SCL
AUDIO-MUTE
DVD-MAIN-POWER
SW1211
REC SAFETY
TO VIDEO BLOCK DIAGRAM TO AUDIO BLOCK DIAGRAM TO Hi-Fi AUDIO BLOCK DIAGRAM
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 DIAGRAM
SDA SCL
TO TV PROCESS BLOCK DIAGRAM
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
2
21
YCA-SDA
YCA-CS
DVD-AUDIO-MUTE
42
5
KEY SWITCH
SW1201 SW1203, SW1206 SW1210
33
KEY1
CN2401 CN2503
CN1803
KEY SWITCH
SW2401 SW2408
14
25
8
SDATA
8
12
SD
A
T
A
TO DVD SYSTEM CONTROL/SERVO BLOCK DIAGRAM <DVD SECTION> CN1A
CN1
6
CN1301
6
SCLK
7
CS
9
DVD-REMOTE
M
1
M+12V
5
C-CONT
6
FG-GND
7
LD-CONT
CAPSTAN MOTOR
CAPSTAN MOTOR
P-ON+5V(3) D/L+15V M+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)
10
SCLK
11
CS
13
D
VD-REMO
TE
52 51
50
SDATA SCLK CS
47
DVD-AUDIO-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
9 7
ST-SENS. END-SENS.
6 7 9
AFT
AFT
YCA-SCL
FUNCTION CBA
M
LOADING MOTOR
CYLINDER ASSEMBLY
DRUM MOTOR
PG SENSOR
M
DVD-H
DVD-H
48
VOLUME
VOLUME
11 28
Hi-Fi MUTE
D-REC-H
“
“ = SMD
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
CR
OSS 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.