Panasonic TH-42PX80U User manual

© 2008 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
ORDER NO. MTNC080201CE
B34 Canada: B07
42” Class 720p Plasma HDTV
Model No. TH-42PX80U
GPH11DU Chassis

29
9 Block Diagram
9.1. Block Diagram (1/5)
(LED:6TIMES)
(LED:10TIMES)
(LED:4TIMES)
(LED:12TIMES)
(LED:7TIMES)
(LED:2TIMES)
(LED:3TIMES)
(LED:5TIMES)
(LED:8TIMES)
(LED:8TIMES)
(LED:6TIMES)
(LED:10TIMES)
(LED:4TIMES)
(LED:12TIMES)
(LED:7TIMES)
(LED:2TIMES)
(LED:3TIMES)
(LED:5TIMES)
(LED:8TIMES)
SUB+9V DET
A20
REMOTE IN
+1.8V(S)
DIGITAL VIDEO DATA
+3.3V(STB)
SUB+9V
SOS8_SS
A1
+5V(STB)
+1.2V(P)
+2.5V(P)
DCDC
GenX5
DCDC
+9V(S)
DDR
Y,PB,PR
MONITOR
OUT L,R
A51
SPEAKER(L)
Peaks Lite2p
A7
PANEL STATUS
+3.3V(P)
from
DCDC
F15V
SOUND SOS
+9V(S)
A25
GenX6
+5V(S)
+15V(P)
V
+3.3V(P)
F+15V
L,R
SUB+5V DET
+1.2V(P)
+15V(P) DET
CLKGEN
MONITOR
L,R
SD CARD
PWM AUDIO OUT
SLOT
+5V(P) DET
A52
EEPROM
+3.3V(S)
C11
IIC1
+30V(BT)
AUDIO AMP
+1.2V(S)
TUNER SOS
R/G/B
TUNER
PAMEL SOS
HDMI AUDIO
VIDEO DATA
SUB+1.8V
SOS7_SC2
POWER SOS
Y,PB,PR
CONTROL SIGNAL
+15V(P)
TEMP SENSOR
SUB+3.3V DET
L,R
+5V(P)
DCDC
DCDC
SC20
HDMI1
+5V(S)
+3.3V(P)
+3.3V(STB)
RESET
+15V(P)
SBO2
SBI2
+3.3V(STB)
DTV_V
L,R
COMP2
COMP1
C21
+9V(S)
RESET
+3.3V(STB_D)
DCDC
P6,P7
PANEL STB_ON
+3.3V(S)
LVDS DATA
A31
P25
+15V(S)
DTV AUDIO
A32
to
F+15V
HDMI2
+3.3V(S)
KEYSCAN1
VIDEO2
K1
+15V(P)
EEPROM
VIDEO1
A12
+5V(P)
V, Y, C
+5V(P)
+15V(SND)
DCDC
+5V(P)
SUB+5V
V
+3.3V(P) DET
to/from
L,R
V
+5V(P)
to/from
SOUND SOS
CH0 DATA
+15V(SND)
SD BOOT
+2.5V(P)
KEYSCAN1
SUB+3.3V
LVDS DATA
TUNER SOS
LED(R)
G51
SUB+1.2V
RESET
SOS8_SS
L,R
Y, C , V
GS52
+3.3V(S)
DDR2
+5V(S)
POWER LED(R)
SOS6_SC1
to/from
SPEAKER(R)
AUDIO SW
VIDEO SW
SD CARD DATA
SD CARD DATA
HDMI I/F
RECEIVER
10bit A/D
OPTICAL OUT
OPTICAL OUT
DTV AUDIO
FRONT END
PROCESSOR
CH0 DATA
POWER SOS
PROCESSOR
SOUND
REMOTE
RECEIVER
POWER
S2
ON
SWITCH
KEYSCAN3
OUT
AUDIO
OPTICAL OPTICAL OUT
SOUND SOS DET
CIRCUIT
TUNER SOS DET
CIRCUIT
PANEL STB_ON PANEL STATUS
PAMEL SOS
FLASH
MEMORY
SCAN CONTROL
SUSTAIN CONTROL
PLASMA AI
LVDS RECEIVER
SYNC PROCESSING
CLOCK GENE.
SUB-FIELD PROCESSING
VIDEO DATA
DISCHARGE
CONTROL
STB MCU
PANEL MICOM
PANEL MAIN ON
HDMI
EQUALIZER
HDMI3
GH11 A11
KEY SWITCH
G
KEY SWITCH
FRONT TERMINAL
SD CARD SLOTGS
GH HDMI3 IN
DIGITAL SIGNAL PROCESSOR
A
POWER SWITCH
POWER LED
S
K
REMOTE RECEIVER
+5V(S) +5V(S)
+3.3V(S)+3.3V(S)
L,R
L,R
+5V(STB)
BT+30V
+9V(S)
+3.3V(STB)
+30V(BT)
STB+3.3V
+5V(STB)
+5V(S)
TH-42PX80U
Block Diagram (1/5)
TH-42PX80U
Block Diagram (1/5)
(LED:12TIMES)
(LED:10TIMES)
(LED:12TIMES)
(LED:10TIMES)

30
9.2. Block Diagram (2/5)
COLD HOT
(LED 8TIME)
(LED 6 TIMES)
(LED 7 TIMES)
(LED 4 TIME)
A7
AC CORD
Vda
+5V(P)
C11
MAIN SW1
C10
P12
SS34
MAIN SW2
SOS8_SS
+5V(P)
SOS7_SC2
C20
+5V(STB)
SS12
C1
A20
+15V(P)
MAIN SW1
+5V(P)
C23
+5V(P)
VSUS
Vda
SS23
MAIN SW1
MAIN SW2
SC41
SC42
VSUS
SD42
VdaVda
+15V(P)
SC2
SC20
SS11
MAIN SW2
VSUS
+5V(P)
C21
P11
P-BOARD
SOS DETECT
+5V(P)
VSUS
SU11
+15V(P)
Main Block(Tuner side)
SD11
SU41
A31 A32
P2
SOS8_SS
P
C2
Vda
Vda
P9
SOS6_SC1
SOS8_SS
POWER SUPPLY
F+15V
SUSTAIN
VOLTAGE
CONTROL
SUSTAIN
VOLTAGE
RECTIFIER
PROCESS
VOLTAGE
RECTIFIER
POWER
FACTOR
CONTROL
PROCESS
VOLTAGE
CONTROL
STANBY
VOLTAGE
RECTIFIER
RELAY
LINE
FILTER
LINE
FILTER
RECTIFIER
RECTIFIER
STANBY
VOLTAGE
CONTROL
ADDRESS
VOLTAGE
(VE)
ERASE
PULSE
SUSTAIN
PULSE
SS-BOARD
SOS DETECT
SUSTAIN CONTROL
SUSTAIN CONTROLSUSTAIN CONTROL
VIDEO DATA VIDEO DATA
SC-BOARD
FLOTING PART
SOS DETECT
SC-BOARD
ENEGRY RECOVERY
SOS DETECT
+15V(P)
+5V(P)
SCAN CONTROL
DATA DRIVER (RIGHT) DATA DRIVER (LEFT)
SUSTAIN DRIVESS
SC SCAN DRIVE
SU SCAN OUT (UPPER)
SCAN OUT (LOWER)SD
VOLTAGE
GENERATOR
CONTROL
PULSE
SCAN
PULSE
SUSTAIN
PULSE
SCAN
DRIVER
DATA
DRIVER
DATA
DRIVER
DATA
DRIVER
DATA
DRIVER
DATA
DRIVER
DATA
DRIVER
DATA
DRIVER
DATA
DRIVER
+15V(P)
+5V(P)
P25 POWER MICOM A25
PS SOS
ON/OFF CONTROL
SD46
SCAN
DRIVER
SC46
F+15V
+15V(SND)
P6
+5V(STB)
P7
COLD HOT
(LED 8 TIME)
(LED 6 TIMES)
(LED 7 TIMES)
(LED 4 TIME)
TH-42PX80U
Block Diagram (2/5)
TH-42PX80U
Block Diagram (2/5)

31
9.3. Block Diagram (3/5)
(LED 12 )
CH0DATA
D2301
Q5604
D5692
Q5603
+9V(S)
5V(S)
L4001
Q4016
L4000
D4006
D4007
5V(STB)
3.3V(STB_TU)
+30V(BT)
9V(S)
+15V(SND)
F15V
+30V(BT)
+1.8V(S) +1.2V(S)
D5614D5615
D5613
COMP1
L/R
+1.8V
SPEAKER
VIDEO3
MAIN L/R
L/R
L/R
SPDIF-OUT
VIDEO SW
AV L/ R
PC
L/R
V1_L
COMP1
V
RGB_CVBS
D1_PR VIDEO4
DTV-SDIN
OUT
MONITOR
OUT
+15V
V1_V
IC2106
SPDIF-IN
L/R
Y/C
SOS
L/R
L_OUT
AUDIO SW
+3.3V
MAIN
OUT
SUB
OUT
+1.8V
SUB MONO
L+R
DTV_R
Q2301
TV
IC3001
D1_Y
IC2107
VIDEO2
SOUND PROCESSOR
SPEAKER
VIDEO1
IC2301
AUDIO AMP
COMP2
MON_L
ERROR DET
IIC2
PC_HS/VS
OUT
HS/VS
Y/PB/PR
TV
L/R
+3.3V
L/R
VIDEO1
R_OUT
L/R
V
HDMI-SDIN
MONITOR
MON_R
V1_R
DTV2
DTV_L
Y/PB/PR
DTV1
Y/C
R/G/B/H/V
Y/PB/PR
MON_V
TV
D1_PB
R(-)
L(+)
L(-)
R(+)
1
2
4
3
R
L
+3.3V(S)
CLOCK GEN
+1.8V(S)
CLOCK
OSD
PROCESS
SD DATA
RESET
12
CONTROL
+3.3V
3
TRANSPORT
DECODER
IC8001
1
(TS)
A52
SD DATA
A51
V2_R
V2_L
V2_C
V2_Y
V2_V
IIC2
IIC1
IIC0
SBI2
SBO2
F+15V DET
IC8004
ON/OFF
IC8502
CPU BUS I/F
IC8503
IIC_IF
EEPROM
IIC3
3
1
GS
52
12
4bit
SD CARD
DDR2 #0
IC8002
DDR I/F
IC5601
+1.8V
+1.2V
+1.2V(S)
+3.3V
IC5600
SOUND SOS
JK7701
DTV_V
RESET
IC3017
RESET
DTV RESET
+9V(S)
HDMI SOUND
+5V(S)
+3.3V(S)
+30V(BT)
V1
V2
D1
D2
V1
V2
SPDIF-OUT
AV_L/R
MON
MON
SUB+1.8V
SUB+1.2V
SUB+3.3V
FRONT TERMINAL
KEY SWITCH
G
11
V2_R
V2_C
V2_L
V2_Y
5
1
V2_V
G51
V2_R
VIDEO2
9
7
3
KEYSCAN1
COMP2
COMP1
GS SD CARD SLOT
SPEAKER_L
Y/PB/PR
R/G/B_24bit
Peaks Lite2p
+9V
IC4000
STB
+3.3V
JK3000
JK3701
1
V1_C
V1_Y
A12
IC2008
HDMI-SPDIF
TV
LVDS_TA1P-5P
LVDS_TA1P-5P
STB3.3V
MUTE
STB_RESET
ANALOG ASIC
+15V(SND)
D3005
F15V
IIC2
+3.3V(STB_TU)
+5V+9V
VIDEO
AUDIO
IF_AGC
TV_R
TV_L
+30V(BT)
+5V(S)
IFD_OUT2
AFT
IFD_OUT1
AFT
IIC_TU
TV_V
(TERRESTRIAL RECEIVER)
IC8300
IF_AGC
IIC_TU
FRONT END PROCESSOR
+1.2V(S)
+3.3V(S)
IIC2
D1_L
D1_R
D2_Y
D2_PB
D2_PR
D2_L
D2_R
COMP2
Y/C/V
Y/C/V
V2_L
V2_V
V2_C
V2_Y
VIDEO4
VIDEO1
VIDEO2
VIDEO3
DTV_V
PC
NOR FLASH
SD CARD
I/F
OUT
AUDIO
OPTICAL
KEYSCAN1
SPDIF-IN
DTV-SDIN
SOUND
SOS
DET
AUDIO
PROCESS
VIDEO
PROCESS
KEY SWITCH
SPEAKER_R
DIGITAL
DEMODULATOR
ANT IN
R/G/B_24bit
5
11
9
7
3
D1
D2
Y/PB/PR
IC5606
STB
RESET
KEYSCAN3
STB_RESET
DIGITAL SIGNAL PROCESSOR
A
DTV1
L/R
DTV_L/R
PWM
OUT
CONV.
D/A
D/A
A/D
SOUND
PROCESSOR
CONV.
CONV.
OUT
OPTICAL
TU8300 TUNER
1
2
3
4
5
6
7
8
9
10
11
12
13
(LED 12 )
TH-42PX80U
Block Diagram (3/5)
TH-42PX80U
Block Diagram (3/5)

32
9.4. Block Diagram (4/5)
(LED:10TIMES)
(LED:12TIMES)
(LED:10TIMES)
(LED:2TIMES)
(LED:3TIMES)
(LED:5TIMES)
(LED:4TIMES)
(LED:7TIMES)
(LED:6TIMES)
(LED:8TIMES)
D5522
Q5522
PA5600
+3.3V(S)
+5V(S)
D1107
D5521
D2520A
D3814 D3813
+5V(STB)
DDC IIC
DDCA_IIC
IC4515
3.3V
->5V
IC4514
HDMI_CEC HDMI_CEC
TMDS DATA CLOCK
TUNER SOS
HDMI_CEC_
PU_ON
DTV RESET
3
IC4510
PANEL SOS
+3.3V(STB)
SW
HDMI_SPDIF
HDMI_SD
G(10bit)
R(10bit)
B(10bit)
+5V(HDMI)
Q4502 Q4503
DET_1
+5V(HDMI)
DET_2
K
IIC1
EEPROM
IC1101
IIC3
IIC3
LED R
REMOTE IN
HDMI_CEC
3
KEYSCAN1
1
SOUND SOS
4
A1
PANEL STATUS
REMOTE
RECEIVER
SUB+9V DET
1
IC4511
GenX5
DDCC_IIC
+3.3V
IIC1
RM2501
IC1100
4
TV SUB ON
IC4513
+1.8V
SUB+3.3V DET
K1
+1.8V
DDC IIC
AFT
IC4512
HDMI IN 2
POWER LED
+5V
+3.3V
+5V
+1.8V
HDMI IN 1
+1.8V
SBO2
SBI2
IIC1
SOUND SOS
TV SUB ON
AFT
TUNER SOS
KEYSCAN1
STB RESET
DTV RESET
STB RESET
+5V(S)
HDMI SOUND
+9V(S)
+5V(STB)
+3.3V(S)
JK4500 JK4501
A
Y/PB/PR
P7
1
+15V(SND)
+15V(SND)
17
5
A7
FSTB+15V
13
FSTB+15V
+5V(S)
ERROR DET
VOLTAGE
+9V(S)
F15V
+5V(S)
+5V
IC5401
+9V(S)
IC5400
+9V
FSTB+15V
1
1
7
+5V(P)
+3.3V(STB)
+15V(P)
EEPROM
40
C21
POWER ON/OFF
+2.5V
IC9900
+15V(P)
TENP SENSOR
+5V(P)
SOS6_SC1
68
OUT
DDR I/F
LEVEL CONV.
OUT
+3.3V
IC9802,03
BUS SW
IC9806
RESET
PANEL STATUS
55
FLASH I/F
29
IC9001
+5V(P)
54
IC9805
CLK
IIC1
+3.3V
SOS7_SC2
+2.5V
RESET
+1.2V
IIC2
+1.2V
IC9013
CLK
53
IIC2
VIDEO DATA
3
A32
+1.2V
54
+5V(P)
IIC1
+5V(P)
+3.3V(P) DET
DDR
MEMORY
+15V(P)
+5V(P)
IC9002
SC20
2
SOS7_SC2
+5V(P)
PANEL MICOM
+5V(P) DET
PANEL SOS
SOS6_SC1
IC9901
SOS8_SS
IC9003
IC9500
28
IIC2
+2.5V
14
IIC2
+15V(P) DET
OUT
SOS8_SS
30
16
IC9303
A31
Q9805,06
A20
IIC2
15
+3.3V
+3.3V
IIC2
LVDS_TA1P-5P
+15V(SND)
SUB+5V DET
FSTB+15V
+5V(P)
10
1
PANEL MAIN ON
+15V(P)
+15V(P)
VDA_DET
9
P25
+5V(P)
6
5
2
11
A25
SOS4_PSPOWER SOS
PANEL STB_ON
+3.3V(STB_TU)
TUNER SOS
+3.3V(STB_TU)
VDA_DET
GenX6
HDMI I/F RECEIVER
10bit A/D
AUDIO
VIDEO
INTERFACE
INTERFACE
TMDS DATA CLOCK
+3.3V(STB_D)
IC9011
KEYSCAN3
668
K1
SW2500
S2
1
ON
2
POWER SWITCH
7
KEYSCAN3
KEYSCAN3
+30V(BT)
DROP
FLASH
MEMORY
REMOTE IN
PANEL MAIN ON
IIC2
SUB-FIELD PROCESSOR
SCAN CONTROL
SUSTAIN CONTROL
CONTROL DATA
H/V SYNC CONTROL
PLASMA AI
VIDEO DATA
VIDEO DATA
VIDEO DATA
CONTROL DATA
DISCHARGE
CONTROL
SUSTAIN CONTROL
CONTROL DATA
SCAN CONTROL
VIDEO/PANEL CONTROL
R/G/B_24bit
TV SUB ON
POWER LED(R)
+30V(BT)
STB MCU
S
Y/PB/PR
3
+15V(SND)
15
FSTB+15V
TV SUB ON
12
+5V(STB)
10
TV SUB ON
GH11
GH10
DET_3
22
18
HDMI_CEC
+5V(S)
+3.3V(S)
+5V
IC3802
26
12
EEPROM
20
Q3802
HDMI5V DET
DDC IIC
+5V(HDMI)
HDMI_CEC
HDMI IN 3
TMDS DATA
IC3801
+3.3V(S)
GH HDMI3 IN
DDC IIC
26
12
20
22
18
A11
DDCB_IIC
TMDS DATA
CLOCK
HDMI EQUALIZER
PANEL SOS
PANEL STATUS
PANEL STB_ON
TV SUB ON
DIGITAL SIGNAL PROCESSOR
REMOTE RECEIVER
POWER LED
POWER SWITCH
C11
Q9044,46
3.3V
->5V
SERIAL SW
IC4103
IIC1
TEMP SENSOR
IC4800
A17
A18
FOR FACTORY USE
FOR FACTORY USE
LVDS
DATA
DISCHARGE CONTROL
CPG with SS
LVDS RX
DATA DRIVER
BUFEER
IC1102
P6
DDC_IIC0 DDC_IIC1
+5V(HDMI)
1,2,3
A/D CONV.
HDMI
HDCP KEY
HDMI PROCESSOR
DECODE
H/V
IIC
2
1
3
4
12
5
13
6
7
8
9
10
11
(LED:10TIMES)
(LED:12TIMES)
(LED:10TIMES)
(LED:2TIMES)
(LED:3TIMES)
(LED:5TIMES)
(LED:4TIMES)
(LED:7TIMES)
(LED:6TIMES)
(LED:8TIMES)
TH-42PX80U
Block Diagram (4/5)
TH-42PX80U
Block Diagram (4/5)

33
9.5. Block Diagram (5/5)
(LED:8TIMES)
(LED:6TIMES)
(LED:7TIMES)
COLDHOT
COLD
(LED:4TIMES)
HOT
+
TPVSCN
D14721
D16480
TPSS1
TPVDA
D16821
D16321
VF_GND
TPSOS7
TPVSET
5V
D16585
D16820
D16253
D16583
TPVE
TPVSUS
TPVSUS
D16255
TPSC1
D16717
5V
TPVE2
D16282
TPSOS6
D16718
D16280
TPVAD
D16725
F402
D536
F403
F401
D540
D531
D511
D509
SS
12
SD
11
20
3
Q16422
IC16191
IC14961-63
CEL
4
A31
2
PC16710
1
BUFFER
Vfo
SC
41
Q16421
PC16705
SC30
9
F_5V_A
Q16451
+15V(P)
CPH
12V
CML
15
9
Vsus
CSH
SD
46
Q16622,23
CSL
Q16021,2
P12
1
29
SS23
5V_F_A
+5V(P)
16V_F
IC16788,89
1
IC16302
SD
42
IC16791
IPD
Q16601
SC
46
14
IC16301
F_5V_B
IC16724
IC16786,87
10
30
C23
Vscn
Q16604
1
IC16784
17
1
CB2
Vda
Q16331
13
+5V(P)
Vda
2
16
SOS7_SC2
IC16561,62
C11
Vda
19
SS
23
IC16725
LED(G)
Vda
SC
42
VSCN
IC16131
Vda
A32
USH
C10
SOS6_SC1
(SC1)
15
1
SOS8_SS
SC2
VSET
PC16480
42 1
IC16501
1
(15V_F)
Vda
LED(G)
CB4
Q16335
UEH
3
SS
34
SU
41
IC17101,02
1
CEL
2
IC16772
Q16875,79
USL
8
Q16001,2
SS
11
Q16051
1
SS
53A
1
T16301A
1
CB3
1
+5V(P)
SOS8_SS
15
1
55
PLASMA PANEL
IC14901-03
3
SOS8_SS
6
16
SC
20
VSCN-F
CB5
16V-F
Vda
Q16642,43,45
A20
+15V(P)
+5V(P)
CB7
+5V(P)
C21
7
2
IC16752
7
6
1
(SC2)
+5V(P)
CMH
Q16876
BUFFER
C20
+15V(P)
D16871
IC16303
CB1
D16873
STB_PS
NUEL
SU
11
IC16241
NUEL
+15V
Q16339
UEH
Q16041
+5V(P)
CB8
+5V(P)
Vsus
2
SS
56A
IC14951-53
UML
Q16401,04
+15V(P)
UMH
Vfo
IC14954-56
VSET
17
Q16441
Q16661
+5V
C23
IC14904-06
+15V(P)
CB6
5
5V-F_A
12
+5V(P)
IC16151
CPH2
2
P2
IC16251
7
IC16521
+5V
IC16472
19
IC16581
P11
13
IC17201,02
Vda
IC17203
Q16102
VIDEO DATA
CONTROL DATA
VIDEO DATA
CONTROL DATA
SUSTAIN CONTROL
SUSTAIN CONTROL
BUFFER
BUFFER
PANEL DRIVERPANEL DRIVER
PLASMA PANEL
SUSTAIN CONTROL
DRIVER
TRANS
ERROR DET
DRIVER
NAND GATE
ENERGY
VSUS Gen.
BUFFER
VE Gen.
ERROR DET
RECOVERY
SUSTAIN CONTROL
PANEL SUSTAIN
ELECTRODE
SCAN
CONTROL
VAD SEPA
CONVERTER
BUFFER
RECOVERY
PHOTO COUPLER
DRIVER
ERROR DET
DRIVER
DRIVER
SCAN CONTROL
ENERGY
VAD
GEN.
DC/DC
PHOTO COUPLER
GEN.
AND GATE
VSCN
PHOTO COUPLER
VSET SEPA
VSUS Gen.
ERROR DET
ERROR DET
DRIVER
SCAN
DRIVER
SCAN
DRIVER
SCAN
SCAN
DRIVER
SCAN CONTROL
PLASMA PANEL
PANEL SCAN
ELECTRODES
SCAN DATA
12V
STB_PS
ERROR DET
VSET OUT
ERROR DET
VOLTAGE
DROP
SCAN DRIVE
C2
SUSTAIN DRIVE
SC
DATA DRIVER (RIGHT)
SS
DATA DRIVER (LEFT)
C1
PPOWER SUPPLY
SCAN OUT (UPPER)SU
SCAN OUT (LOWER)SD
1
5
12
2
686766
FACTORY
USE
FOR
+5V
PFC
+15V(P)
FSTB +15V
Vsus
Q507
RL402
15V_ON/OFF
Vsus CONTROL
VDA_DET
+5V(P)
T630mAL 250V
2
13
ALL OFF
Q555
CONT DET
+15V(SND)
IC409
9
PFC_ON/OFF
1
P11
+15V(SND)
CONT.
FSTB
+15V
Vlow_ON/OFF
POWER SOS +5V(STB)
CONT.
SS12
RL401
Vsus
Vlow_DET
6
TV SUB ON
+15V(P)
+5V(P)
IC510
IC520
P9
84 1210
Vda
TV SUB ON
IC406
VDATA_DET
+5V(STB)
P12
PFC CONTROL
Vsus_ON/OFF
Q537
Vsus
+15V(P)
11
T404
8
Vda
7
FSTB
+15V
RESET
3
P6
D404
L410
1
ALL_OFF
1
STB5V_
ON/OFF
1
P7
+5V
+15V(P)
RESET
T402
MAIN
D401
56
+5V(STB)
1
A25
Vsus_DET
POWER
STB
POWER
+5V(P)
SC2
Vda CONTROL
SS11
+15V(P)
AC CORD
IC401
12
IC502
T401
P2
2
T410
IC501
J503
RL403
T8AH 250V
L404,5
P+15V
5
4
9
10
PHOTO COUPLER
Q527 Vda+75V
T8AH 250V
Vsus
P25
1
+12V
STB_PS
Vlow OVER
VOLTAGE
RECTIFIER
FILTER
FILTER RECTIFIER
Vlow
CONTROL
RUSH RELAY(H)
MAIN RELAY(H)
POWER MICOM
SOS4_PS
PANEL
MAIN ON
PANEL MAIN ON
VlOW
DET
VlOW
CONT
A7 A7
Q16280
SU1B-SU4B
SD1B-SD4B
(LED:8TIMES)
(LED:6TIMES)
(LED:7TIMES)
COLDHOT
COLD
(LED:4TIMES)
HOT
TH-42PX80U
Block Diagram (5/5)
TH-42PX80U
Block Diagram (5/5)

35
10 Wiring Connection Diagram
10.1. Caution statement.
Caution:
Please confirm that all flexible cables are assembled correctly.
Also make sure that they are locked in the connectors.
Verify by giving the flexible cables a very slight pull.
10.2. Wiring (1)

36
10.3. Wiring (2)

37
11 Schematic Diagram
11.1. Schematic Diagram Note

38
11.2. P-Board (1/6) Schematic Diagram
USA/EU
ASIA
E
968712
F
B
4
C
5
A
3
D
TH-42PX80U
P-Board (1/6) Schematic Diagram
TH-42PX80U
P-Board (1/6) Schematic Diagram
1
2
3
AA AB AC AD AE AF AG AH AI AJ
COLD
HOT
COLD
HOT
COLD
HOT
COLD
HOT
COLD
HOT
TO
AC CORD
PFC
P-BOARD LSEP1260MJHB (1/6)
USA/EU
ASIA