Samsung TW15X53X, TW14N63X, TW21B3N3X, TW21B3N3X-BWT Block Diagram
9. Block Diagrams
9-1 C15C Video Block Diagram
Block Diagrams
Samsung Electronics 9-1
9-1-1 Notes
The TV’s 1st and 2nd tuners (and VCR module) are “multi-system.” compatible:
IC201 (TDA8842/8841) is the video, chroma, and deflection (VCD) IC .
9-1-1(A) TAPE PLAYBACK (REGARDLESS OF ORIGINAL RECORDING SYSTEM)
If the output PB signal of micom pin 6 is high, the PB signal outputs from module deck 2, passes
through IC 702 pins 2 and 3 and out to another VCR . The output signal of IC701 pin 1 (pin 15)
outputs from IC201S pin 17 .
9-1-1(B) VIEWING NORMAL CHANNEL WHILE RECORDING A SCRAMBLED CHANNEL:
The output CVBS (Composite Video Signal) of the 2nd IF outputs to IC702pin 3 when the micom’s pin 7
V/T/H (VCR tuner high) is high . The decoded signal goes to IC701 pin 2, where it is fed to IC 701 pin
4 (high output of micom’s’ pin 8— AV/Tuner), and out to VCR pin 4 (module deck) for recording.
9-1-1(C) VIEWING A SCRAMBLED CHANNEL WHILE RECORDING AN UNSCRAMBLED CHANNEL.
The output CVBS of the 2nd IF is fed from IC701 pin 5 to IC701 pin 4 (low output of micom
pin 8—AV/tuner). Then it goes to the module deck pin 4 for recording.
The scrambled signal (CVBS) is fed to IC702 pin 1 through the 1st IF, and then to IC702 pin 3 (micom’s
pin 7, V/T/H registers low). Then it goes to the decoder input. The descrambled signal goes to IC701
pins 2 and 15 (PH high output of micom’s pin 6), and then to IC201S pin 17, where it outputs as RGB.
9-1-1(D) SYNCHRONOUS RECORDING:
The viewer sees the signal from the 1st tuner , while the signal from the second tuner is recorded.
Audio processing for the French system type is shown in the table.
Block Diagrams
9-2 Samsung Electronics
9-2 C15C Video Block Diagram (Continued)
ANT
C15A OPTION
MICOM#24
MICOM #23
1st Tunning
2nd Tunning
SDA
SCL
1st
#13
VPS
ICP01
IF
2nd
IF
CN101 PB.V
Module
DECK
78
IF
DET.
6
1T.option
PB H
Micom #6
Micom #8
2
CN101
4
REC. SOURCE V.
IC201
Trap
INT EXT
13
11
10
1
5
AV/Tuner
#8
38
17
15
H
94
R
G
B
IC701
ICT01
TTX
L
CRT
Drive
IC702
Micom #6
PB H
9
V/T/H
VCR
Micom #7
V-in
or
2
1
5
2
3
10
3
V-out
Decorder
Micom Pin Function
PIN NO.
6
7
8
56, 57
23,24
PIN NAME
PB H
V/T/H
AV/TUNER
S-L H
FRA H
SDA,SCL
FUNCTION
High Output : Playback signal is monitored. The PB signal is output at scart.
High Output : The second tuner signal is output at scart.
High Output : AV signal is recorded. Low output : TUNER signal is recorded.
Port
S-L H
FRA H
S
PAL/SEC
FRANCE-L
FRANCE-L'
L
L
H
L
H
L
a C. SYSTEM : PAL/SEC ARE AUTO mode, and France is SECAM mode.
2
Extra control signals are all controlled by the I
C bus.
Select INT/EXT
FRENCH system modulation
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