Troubleshooting
Samsung Electronics 5-1
8. Block Diagram
8-1 Voltage / Current Block Diagram
S
M
P
136V/845mA
7.9V/835mA
7.7V/217mA
78R05
(IC802)
7.8V/621mA
78R05
(IC805)
6.24V/625mA(AC)
F
214V/41mA
B
16.35V/697mA
T
- 13.5V/434mA
5V/210mA
5V/183mA
5V/431mA
5mA
37mA
103mA
14.9V/123mA
16.2V/455mA
404mA
19mA
78RM33
(IC202)
(IC402)
5V/172mA
CPT Heater
33V T uner
IC501,2,3
7812
HDT
LA7845
CPT Socket
Main T uner
Sound C ontrol IC
Module Board
3.3V/423mA
Module Board
LM393
26.7V/17mA
12.36V/346mA
S
TDA7269
11.2V/212mA
78R09
12.2V/135mA
C2073
12.2V/ 10mA
DDR1001A
(HIC401)
No Sound
9V/30mA
9V/212mA
9V/86mA
6V/130mA
78RM33
(IC903)
Main T uner
Sound C ontrol IC
Module Board
Micom (IC901)
Samsung Electronics
Block Diagrams
8-1
8-2 PCB Layout
8-3 System Block Diagram
Block Diagrams
8-2 Samsung Electronics
MAIN Tmblock
Tuner/ LAN/IF
Sound Process
MSP34**
MAIN SPEAKER
MAIN S-AMP
TDA7269
Woofer AMP
PIP Tmblock
Tuner/LAN/IF
SCART/RCA
Jack
Array
CVBS
YPbPr
YC
MICOM
SDA555*
EEPROM
24W16
Feature Box
VSP9407, 9405 / CXA2151 / CXA2165
BA7657F / TEA6425
(SRC, D/A, A/D, Def, PIP, Matrix)
H-Out TR
TDA7269
RGB DRIVE
TDA6111Q*3
V/M
CRT
78R09
78R05 78R33
12V
33V
Vertical AMP
LA7845
200V
AC INPUT
FJL6920
8V
POWER
SPS 250W
TRANS
5Q1565F
24V
135V
E/W AMP
LM393
Double
Focus
FBT
Samsung Electronics
Block Diagrams
8-3
8-4 Power Block Diagram
24V, 28V
TDA7269 SOUND AMP
W/O WOOFER : 28V
5V5V
POWER
TRANS
T801S
130V
S.M.P.S
Feedback
130V
FBT
6.3V
-13.5V
KA393
EW DROVE
16.5V
200V
8V
12V
130V
12V
KA7812
REGULATOR
KA78R05
REGULATOR
C2073
POWER TR
KA78RM33
REGULATOR
DDR1001
H DRIVE IC
HDT
KA78R05
REGULATOR
KA78RM33
REGULATOR
KA78RM25
REGULATOR
3.3V5V
2.5V3.3V
KA78R09
REGULATOR
9V
KS24L161
EEP ROM
SDA555XFL
MICOM
18
REGULATRO
LF25C
REGULATRO
4931
REGULATRO
1.8V
2.5V
3.3V
MSP34XXD/G
DSP
3.3V
Main Tuner
PIP Tuner
CXA2151
SDA9407
UPD64083
CXA2150
AC 6.3V
CRT
Heater
X-RAY
Prptector
LA7845
VERTICAL AMP
TDA2030
Tilt Coil
TDA6101QX3
TDA6111QX3
CRT pcp
200V 130V
V/M
CRT pcb
CRT
GRID 1
CRT
FOCUS-1
FOCUS-2
Block Diagrams
8-4 Samsung Electronics
8-5 Video Signal Block Diagram
PIP
Main
Feature Box
VSP9407
Decoder*2
H/V Scaler
DRAM / SRAM
TEA6425
S/W
BA7657F
S/W
CXA2151
Sync Counter
Comp. & SW
DVD DTV
CXA2165
RGB Matrix
Deflection
H-OUT
V-OUT
CRT-DRIVE
TDA6111Q
Ik
R.G.B
CATHODE
REF.
AMP
VM
VM-COIL
AFT
Main TM Block
Micom
Jack Array
- Rear Jack
- Side Jack
- Super Jack
Sub TM Block
ANT
Samsung Electronics
Block Diagrams
8-5
8-6 Sound Signal Block Diagram
TM-BLOCK
SIF
16
47
ANA-IN
AV-RO
27
AV-LO
28
AUDIO PROCESSOR
MSP34XX
AV-L3
37
AV-R3
38
AV-L2 AV-R2
39
40
AV-L1
41
L-O
R-O
AV-R1
42
25
24
11
AUDIO AMP
TDA7269
L-I
7
R-I
39
L-O
R-O
Mute Timming
4
2
24V
R
AUDIO
OUT
Control
SIDE-A/V
49
L
L
R
AUDIO
IN3
L
AUDIO
AUDIO
IN2
IN2
CN702
R
MUTE
MICOM
SDA555
R
RL
L
Block Diagrams
8-6 Samsung Electronics
8-7 Deflection Block Diagram
Deflection & Metrix
CXA2165
EW-OUT
47
COMPARATOR
3
KA393
1
G
FET
D
V-Blank
H-Blank
H-Drive
V P Drive
V N Drive
39
40
53
52
H-DRIVE
DDR1001A
4
5
INPUT
INPUT
PUMP UP
2
V-AMP
LA7845
V-OUT
HDT
S
MICOM
H-SYNC
H-PULSESAW-TOOTH
H-OUT,TR
COL 16.5V FOCUS
1
2
V1
DY
V2
H1
H2
19
10
ABL
FBT
FUJ29***
812
V-SYNC
20
DIODE
MOD
EW
CORECTION
35
7
1 2
16.5VAC
DOUBLE FOCUS
MODULE
OUT
1
3
Loading...