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15 Block and Schematic Diagrams
15.1. Schematic Diagram Notes
71
71
15.2. Main Block Diagram
JG(JPEG)
PC CARD
JG3 DG10
SD CARD
SU CONVERT MICOM
(Scan Out) H9
MICOM
T(Tuner) TEXT
TV EEPROM
T10 H10
TUNER
S.R SC AUDIO
48 MSP
(Scan Drive) OUT AV
SWITCH
CONTROL
S.R
PULSE
64
H1 DG1
SDRAM
H4 DG4
AV1 RGB/PC
GC2M RGB AMP
S.R SELECT
64 AV
AV2 SWITCH
GC2S
SUSTAIN
S.R PULSE
AV4
64
FORMAT
CONT.
DG
SDRAM
(MCU
Digital Signal
Processor)
S.R SCAN H
(BT30V, MAIN12V, MAIN9V,
64 PULSE (AV Terminal,
MAIN5V, SUB5V, MAIN3.3V,
Input Select Audio
MAIN2.5V, SOS)
Processor)
S.R
64
SC20
VOLTAGE
GENERATOR
S.R
P (Voltage Control UR12
5
64 Voltage Rectifier)
ON/OF
VSUS SO
SC2 P2
STB5
S.R
48 15V
SC23 P23
PROTECTION
(SOS)
SD
(Scan Out) STANDBY STANDBY STB7V
RECTIFIER VOLTAGE VOLTAGE
CONTROL RECTIFIER STB5V
15
+12Vs
12
STB5
VDA
PROCESS PROCESS 15V
VOLTAGE VOLTAGE
12V
CONTROL RECTIFIER
15
PF (Line Filter 5V
Vd
Voltage STB P
Rectifier)
AC CORD
AC IN POWER SUSTAIN SUSTAIN
LINE VSUS
PF1 PF2 P9 RELAY RECTIFIER FACTOR VOLTAGE VOLTAGE
FILTER
CONTROL CONTROL RECTIFIER
VOLTAGE PF10
RECTIFIER
C11 C21
C1(Data Drive C2(Data Dr
(Lower Right)) (Lower L
C12 C22
S.R. S.R. S.R. S.R. S
TH-37PE30B/TH-42PE30B Main Block Diagram
72
G (AV3/
PC Input) S (POWER
SWITCH)
MICOM G5 HEADPHONES XV(IDTV) PUSH
TEXT
DG18 G18 PCIN SS2
Y
POWER
IDTV
SUPPL
KEYSCAN S34
DG7 G7
AV3
XV2 XV7
SS47
SS34
SS48
DG21 SS
(Sustain
DG27 Drive)
ADDRESS
SDRAM SDRAM ROM
VOLTAGE
(VE)
FORMAT PLASMA AI
RGB/PC CONVERTER SUSTAIN
B AMP DG3 D3 A/D
SELECT RGB SUB-FIELD PULSE
PROCESSOR PROCESSOR
ERASE
PULSE
G SUB MPU
CU
gital Signal ROM MAIN MPU
ocessor)
DG6
CONTROL
N9V, CONTROL
3.3V, DG2
DISCHARGE
D20
DC/DC 3.3V
2.5V
UR12V CONVERTER 1.8V
5V P25 D25
ON/OFF +15V
SOS P27 D27 D (Digital Signal
VDA
STB5V Processor)
D31 D32 VSUS
SS49
PROTECTION SQUAWKER SS23 SS12 SS11
SPEAKER SS40
(SOS) L OUT
L PA3
SQUAWKER
R OUT SPEAKER
PA6 SOUND
PROCESSOR
L OUT WOOFER
R SPEAKER
PA1
PA2
R OUT
SS3
DC/DC
CONVERTER WOOFER
15V P5 PA5 SPEAKER
+12Vs
12V P7 PA7 TUNER 30V
STB5V
(AVR
PA10 PA Speaker
Output)
15V
P12
Vda
STB PS
VSUS
P11
VDA
C21 C23
C2(Data Drive K (Remote
(Lower Left)) Control
Recelver)
C24 K24 IRDA
S.R. S.R. S.R. S.R.
TH-37PE30B/TH-42PE30B Main Block Diagram
72
15.3. PF-Board Block Diagram
PF Tuner Power Supply
DC187V
D925
D920
+
+
+
C920
IC920 C928 C922
POWER CONTROL
4 5
-
Vcc D
Latch-stop UVLO
Startup
- UVLO
comp
+ comp + + comp
- -
VUL
Vcc(start) Vcc(startup off)
OVP /Vcc(stop) /Vcc(startup on)
+ comp Startup
R
-
Q
VOVP S
Peak Burst Peak
Thermal Current Current
Shutdown
Limit Limit
R928 R927 Z/C
1 Zero Current
Detection
On Dead Timer
C926 S
Stand-By Soft
Q drive
Vref R
S
IF/B
2 F/B
- Restart
+ Timer
R934 On Time Timer
GND
R935
C924 R929 3
D926 R925
C925
4 1
L.F
3 2
LF911
R904 F
K
T
AC INLET ! !
! F901 T8AH 250V
! AC120V LF904 LF909
4
AC CORD NEUTRAL
3 4 3 4 3
GND ! ! ! ! !
C901 R901 CF901 C902 C915
1 L.F L.F
$
LIVE
2 1 2 1
PF1
! F900 T8AH 250V
!
HOT S901
HOT
COLD COLD
!
CF902
TH-37PE30B/TH-42PE30B
PF-Board Block Diagram
73
HOT COLD
! T920
18 P2 C972
PF10 TO PA10
17 2
14V(UN REG)
NC S3
D925
5 UNR_14V
D971
+
16 PT 3
S4 C973
+
28 C922 C970
15
NC
400V 14 P1 S1A 5 21V(UN REG)
4 5 1 UNR_21V
D970
Vcc D 13
NC S1B 6 2 UNR_21V
Startup
C921
+
UVLO
+ comp
12 NC C971
- S2A 7
c(startup off)
cc(startup on)
Startup 11 8
L921 V2 S2B
R924 10
Peak Burst Peak V1
#
Current Current
Limit Limit
R970
Soft
drive
!
C914
GND
3
HOT COLD
5 D922
R940
! IC921 4 1
R971
FEED BACK
3 2
R972 C975
C974 R976
R974
3 R973
IC970 1
ERROR REF_2.5V
R975
VOLTAGE 2
DET
!
RL901 STAND-BY 5V
7 STB_5V
+
D990 C990
4 1
R990
L.F
9 AC_ON/OFF
3 2
R992
Q990
LF911 HOT COLD
!
F902
POWER ON/OFF CONTROL
R904
K5D312BK0012
COLD
T3.15AL 250V
HOT
PF2 TO P9
!
LF915 NEUTRAL
1 NEUTRAL
3 4 !
! C903
C915
L.F
2 1
4 LIVE
LIVE
! !
HOT C911 C910 HOT
COLD COLD
TH-37PE30B/TH-42PE30B
PF-Board Block Diagram
73
15.4. PF-Board Schematic Diagram
PF-BOARD TXNPF1UHSE
A
TP904
D920
B0EBNT000002
*
R920
100k
*
*
*
R921
*-
100k
*
TP901
C921
+
C922
50V
B
50V
0.1u 33u
RL901
K6B1ADA00023
IC920 POWER CONTROL
*
MA3X152K0L
4
C5HABZZ00121
C990
D990
50V
C92
*
10u Vcc
2kV
C920 DRIVE REG
D 1 470
*
**
450V + *
REG LATCH
150u
*
- DRV L9
R
EXC
**
Q
Q990 OVP
S
3
2SD13280TL *
R990 S/GND
3.3k TSD
C926
50V
REG 470p
R992 Current
47k Mirror 5
+ OCP/BD
-
-0.65V =
OLP R932
OSC +
OCP
0.82
-