Partial Block Description - Samsung KS7D Service Manual

Circuit Description

13-2 Partial Block Description

13-2-1 System Board Block Description
Tuner
IF-OUT
HC101
SCL SDA
PRE-AMP
IC902
EEPROM
24C161
FROM
A+5.0V
EXTERNAL DVD
INPUT TERMINAL
* VCT4953: DRX+VSP+MSP+TVT. It contains the entire IF, audio, video, display and deflection processing for 4:3 and 16:9
50/60Hz mono and stereo TV sets. The integrated microcontroller is supported by a powerful OSD generator with integrated
Teletext and CC acquisition including on-chip page memory.
* 2SC5936: Inputed H-DRIVE signal which comes from VCT4953.It amplify the H-DRIVE then output to Deflection Yoke.
* LA78045: Inputed VDP signal which comes from VCT4953.It amplify the VDP then output to Deflection Yoke.
* TDA7266SA/TDA7297SA: It is a dual channel audio amplifier.The two audio signals L and R input to it and are amplified, then
output to speaker.
* TDA6109JF: It includes three video output amplifiers and is intended to drive the three cathodes of a color CRT directly.
The output R、 G、 B signals will connect to the CRT socket pins directly.
* EEPROM: As a extended ROM of TVT. It contains some data which is used to program executing.
* STR W6750F: SMPS control HIC. Provide switching signal in order to control the trans working.
* TDQ-6F/13F2S(TUNER): Receives the RF signal and output a fixed IF to Micom.
13-2
JAR701 A-1-IN
EXTERNAL A/V
A-2-IN
INPUT/OUTPUT
A-1-OUT
TERMINAL AUDIO
A-2-OUT
PART (RCA)
FROM EXTERNAL TERMINAL
Y Pb Pr
ICV201 VCTI
VCT49XX
DRX+VSP+DDP+MSP+Micom
SCL SDA
VDP IN
SCL
SDA
H-DRIVE /IN
Pr
DVD_SVHS
ICV201 Y/Pb/Pr
Pb
INPUT PORT
Y
(RCA)
IC801S
STR W6750F
A-L-OUT
IC602
TDA7266SA/
A-R-OUT
TDA7297SA
R-DRIVE/OUT
IC501 G-DRIVE/OUT
TDA6109JF
B-DRIVE/OUT
H.V/OUT
V-AMP/OUT
+16.5V
IC301
-16.5V
LA78045
H.V/OUT
Q401
2SC5936
TO SOUND AMP VCC 14V
T801S TO FBT VCC 125V
Switch Trans
KA78R05
B+5V
FROM HEATER
CRT&D-YORK
S
C F
R O H
TO IC501 E C I
VCC 200V E U G
N S H
V V
V
O O H O
L
L L E
T T A T
A
A A T
G G E G
E E R E
FBT FUH29A001G
TUNER 33V KAC2231
125V
B+8V
KA78RM33 KSC2331 KSC2331
A+3.3V A+5V B+3.3V
Samsung Electronics