Order No.

ITD1207908GE

Model No. LCD-2012

Ver. 1.0

Hints for LCD Board Repair

c Panasonic Corporation 2012

Unauthorized copying and distribution is
a violation of law.
1
 Structure of LCD Panel and Signal Process Board 1
WT50 Panasonic Panel (quadruple speed) ET5, E50 (except TX-ET5) LG Panel (double speed)
A A
DC/DC
LD Back Light Power
Back Light
DC/DC (LED) for LED (LED)
Power
For LED
TNPH1006
TNPH0994
Dr LCD
LCD Panel
Panel Dr LCD
LCD Panel
Panel
(TNPH0993 + TNPA5587
:only Europe is separated into 2)
DC/DC DC/DC

Power for Power for

Panel IC8000 Panel
IC8000 drive drive
Dr (Peaks LD4) Dr
(Peaks
PRO4) Bluetooth IC9100
Resize FRC
for 3D eyewear ZWEI3 IP conv. T-CON
Resize (Double
IP conv. T-CON _Speed)

LCD Panel Module LCD Panel Module

DT50, ET50 Panasonic Panel (quadruple speed) TX-ET5 LG Panel (double speed)
A A FR
DC/DC
LD Back Light Power
Back Light
DC/DC (LED) for LED (LED)
Power
For LED
TNPH0993 TNPA5587
TNPH0993
Dr LCD
LCD Panel
Panel Dr LCD
LCD Panel
Panel

DC/DC DC/DC

Power for Power for

IC8000 Panel IC8000 Panel
(Peaks LD4) drive Dr (Peaks LD4) drive Dr
Bluetooth IC9100
Resize Resize FRC
for 3D eyewear ZWEI3 IP conv. T-CON
IP conv. (Double
T-CON _Speed)

LCD Panel Module LCD Panel Module2

 Structure of LCD Panel and Signal Process Board 2
E5 (except32inch) LG Panel (normal speed)

A
DC/DC Back Light
Power
for LED (LED)
TNPH0993

Dr LCD
LCD Panel
Panel

DC/DC

Power for
IC8000 Panel
(Peaks LD4) drive Dr
Resize
IP conv. T-CON

LCD Panel Module

E5 (32inch only) Panasonic Panel (normal speed)

A DC/DC
TNPH0992 Power Back Light
for LED (LED)
(TNPH0993 + DCDC )

DC/DC
Dr LCD
LCD Panel
Panel
Power for
Panel drive

IC8000
(Peaks LD4)
Resize
IP conv. Dr

T-CON

LCD Panel Module 3

A board

4
 Signal Flow of T*-L**DT50/E5, TX-L**ET5/E50
Opt Audio out T*-L**DT50/E5, TX-L**ET5/ET50
IC8600
LAN A board (TNPH0993**)
Ethernet
Ethernet A12
headphone
USB3 (*) WiFi (#)
IC4900
X8600 A20 (#) (PWM) AMP
AMP
(#): only ET50/DT50 Bluetooth
for 3D IC4901(#)
(*):different by region IC8458 (*)
A21(#) AMP
AMP
USB
USB Hub
Hub
Audio out IC3052 (*)
(*) AMP
AMP A10
LED/
USB Remote
1/2
CI SLOT
(R G B)
PC (only Euro) K Board

COMP1/2 (Y Pb Pr)
IC5000
IC8900
(V) IC8902 Reset/
Reset/
Video1 FLASH
FLASH
ROM EEPROM STB3.3V
STB3.3V
ROM EEPROM

SCART (*)

X8300

TU6702-06
A(SIF) Audio
Audio OSD
OSD
I/F
I/F
Digital (IFD) CH
TUNER
TUNER CH
I/F
I/F Digital
Digital
RF(V) Video
Video A18
Processor
Processor
Video
Video
SD I/F
I/F Resize
Resize MIX
MIX
Card I/P
I/P conv.
conv.
Pixel
Pixel conv.
conv.
HDMI1/2 AI
IC4700 IC8000 Peaks LD4 AI Gamma
Gamma
HDMI3/4 HDMI
HDMI SW
SW
IC8200 IC8201 TX-L**ET5 = DT50 - A21 - IC4901
DDR3
DDR3 DDR3
DDR3
42/47E5 = DT50 - IC4901 - A20 - A21 SDRAM
SDRAM SDRAM
SDRAM - LOGO-LED - (Satellite)5
 Signal Flow of T*-L**WT50
Opt Audio out T*-L**WT50* (TNPH0994**)
IC8600
LAN Ethernet A12
Ethernet headphone
WiFi
IC4900
X8600 A20
(*):different by region (PWM) AMP
AMP
Audio out Bluetooth
IC3001 IC4901
(*) for 3D
AUDIO A21 IC8458 AMP
AMP
AUDIO
SCART SWITCH
SWITCH USB
USB Hub
Hub
(*)
MAIN A10
Audio (R/L) CI SLOT LED/
COMP1/2 (only Euro) Remote
(R G B)
USB K Board
VIDEO
VIDEO 1/2/3 IC5000
PC IC8900
SWITCH
SWITCH MAIN IC8902 Reset/
Reset/
(Y Pb Pr) FLASH
FLASH
(Y Pb Pr) EEPROM STB3.3V
STB3.3V
ROM
ROM EEPROM
(V - - )
(V) (Y C - )
Video1
(H/V)
RF(V)
X8300

TU6702-06
A(SIF) Audio
Audio OSD
OSD
I/F
I/F
TUNER
TUNER Digital (IFD) CH
CH
I/F
I/F Digital
Digital
Video
Video A16
Processor
Processor
Video
Video
SD I/F
I/F Resize
Resize MIX
MIX
Card I/P
I/P conv.
conv.
Pixel
Pixel conv.
conv.
HDMI1/2/3/4 IC8000 Peaks PRO4 AI
AI Gamma
Gamma

IC8200 IC8201 IC8202 IC8203

WT50 = DT50 + DDRx2 + IC3001 DDR3
DDR3 DDR3
DDR3 DDR3
DDR3 DDR3
DDR3
- IC4700 - IC3052 SDRAM
SDRAM SDRAM
SDRAM SDRAM
SDRAM SDRAM
SDRAM 6
 Signal Flow of TC/TH - L**ET5/E50 (TX-L**ET5)
Opt Audio out TC-L**ET5/E50, TH-L**ET5
IC8600
LAN Ethernet
Ethernet
(TNPH1006**) A12
Headphone (*)
USB3 (*) WiFi (#)
IC4900
X8600 A20 (#) (PWM) AMP
AMP

(#):except E50
(*):different by region IC8458 (*)
USB
USB Hub
Hub
Audio out IC3052 (*)
(*) AMP
AMP A10
LED/
USB Remote
1/2
CI SLOT
(R G B)
PC (only Euro) K Board

(Y Pb Pr) IC5000
COMP1/2
IC8900 Reset/
Reset/
Video1 (V) FLASH IC8902 STB3.3V
STB3.3V
FLASH
ROM
ROM EEPROM
EEPROM

SCART (*) TX-L**ET5 (Only Euro

is separated into 2)
A board (TNPH0993**)
X8300
FR board (TNPA5587**)

TU6702-06 IC9350
A(SIF) Audio
Audio OSD
OSD EEPROM
I/F
I/F EEPROM
Digital (IFD) CH
CH X9100
TUNER
TUNER
I/F
I/F Digital
Digital
RF(V) Video
Video A15 TC11
Processor
Processor IC9100 Right TC01A
Video
Video
SD I/F
I/F Resize
Resize MIX
MIX FRC
FRC
Card I/P
I/P conv.
conv. Double
Double Speed
Speed
Pixel
Pixel conv.
conv.
HDMI1/2 AI Left
IC4700 IC8000 Peaks LD4 AI Gamma
Gamma
HDMI3/4 HDMI
HDMI SW
SW TC02A

IC8200 IC8201 IC9250

ET5 = DT50 - IC4901 - A21 DDR3
DDR3 DDR3
DDR3 DDR
DDR
+ IC9100 + IC9350 + IC9250 SDRAM
SDRAM SDRAM
SDRAM 7
 Signal Flow of T*-L32E5
Opt Audio out T*-L32E5 A board (TNPH0992**)
IC8600
LAN Ethernet
Ethernet headphone A12
IC4900
X8600 (PWM) AMP
AMP

(*):different by region

Audio out IC3052 (*)

(*) AMP
AMP A10
LED/
USB Remote
1/2
CI SLOT
(R G B)
PC (only Euro) K Board

COMP1/2 (Y Pb Pr)
IC5000
IC8900
(V) IC8902 Reset/
Reset/
Video1 FLASH
FLASH
ROM EEPROM STB3.3V
STB3.3V
ROM EEPROM

SCART (*)

X8300

TU6702-06
A(SIF) Audio
Audio OSD
OSD
I/F
I/F
Digital (IFD) CH
TUNER
TUNER CH
I/F
I/F Digital
Digital
RF(V) Video
Video A15 A16
Processor
Processor
Video
Video
SD I/F
I/F Resize
Resize MIX
MIX
Card I/P
I/P conv.
conv.
Pixel
Pixel conv.
conv.
HDMI1/2 AI
IC4700 IC8000 Peaks LD4 AI Gamma
Gamma
HDMI3/4 HDMI
HDMI SW
SW IC4301
Gamma
Gamma
IC8200 IC8201 Control
Control
DDR3
DDR3 DDR3
DDR3
32E5 = 42/47E5 + IC4101 + IC4301 SDRAM
SDRAM SDRAM
SDRAM 8
Troubleshoot of Picture Problem
Check by signal flow Check by picture/audio signal flow,
1. Is all input abnormal ? / How about audio ?
2. Check the Test Pattern
< symptom >
There are KEY data for DTCP-IP of DLNA
and the registration information for
Check the voltage level of HDMI input
HDMI problem signal video service in IC8902.
Bias = 3.0V And the final KEY data is generated by IC8000
(OK: 3.0V ,
when SELF-CHECK is done.
NG: No or Low voltage )
After that final data is stored in
HDMI1/2 : IC8000(+IC8902) both IC8000 and IC8902.
Only HDMI3/4 : IC4700 So when IC8000 is replaced,
also IC8902 must be replaced.
(When IC8902 is replaced,
IC8000 is not necessary to be replaced.)

Picture abnormal

IC8000(+IC8902)

Picture freeze Reboot / Error message

(History of R/E counter)

IC8900

9
 Troubleshoot of Power On Problem with A board(1/2)
Check by power on sequence
< Difference from last year model >

# The new models with the Peaks LD4/Pro4 happen the fast 3 blinks
instead of 14 blinks of the previous model.
# The EEPROM(IC8502) is integrated to Flash(IC8900). The memory block is separated.
After just AC plug in, the Peaks IC accesses to the EEPROM part of IC8900 once (about 300ms*).
(The standby power always output to A board, when plug in. )
If the Peaks IC can’t read the IC8900 at that time, fast 3 blinks happened.
*The time is different by the model and state.

< symptom >

Check if TV_SUB_ON signal
Just AC plug in,
is output high signal once. IC8000(+IC8902)
SOS fast 3 blinks No
(about 300ms)

OK

Check short circuit of One of the IC of P15V line

P15V line Shorted (check by power distribution)

No Shorted

One of the IC …
Check output voltage of Check short circuit of
(check by power
SUB3.3V (about300ms) power line :SUB3.3V
NG Shorted distribution)
OK No Shorted

IC8900 (IC8000) IC5400

10
Troubleshoot of Power On Problem with A board(2/2)
< symptom >

Reboot / Error message

IC8900 IC8000(+IC8902)
(History of R/E counter)

SOS 13 blinks

(Except E5 model)

Check short circuit

SOS 10 blink One of the parts of PNL12V line
of PNL12V line
Shorted
No Shorted

IC5300

Only T*-L32E5 model

Check short circuit

(SOS 8 blink) Q4106+IC4101
of Q4106
Shorted
No Shorted

IC4101

SD card
(SOS 7 blink) SLOT

11
 Power Supply Distribution (1/2) : T*-L**E5
IC5000 TX-L**ET5/ET50, T*-L**DT50/E5 (TNPH0993**)
STB5.8V/STB5V 1.1V STB1.1V A10
9 31 1.1V
30
STB5.8V STB3.3V 5
3.3V
3.3V 32
28 STB_RST 10
6
HDMI5VA/B RESET
RESET 12 PEAKSRST

SUB5V
14 3.3
3.3 7
15
13 1 11 DCDCEN SUB_AI_3.3V
LED
TV_SUB_ON 2 SUB9V IC3052(*) Remote
8
DCDCEN AMP
AMP
IC8100 L8100
SUB1.1V
8 1.1V
1.1V IC8000
1 DCDCEN SUB1.5V
IC8101
16V 3 P15V/ 8 1.5V L8101
1.5V X8300
DCDCIN IC8200 IC8201
5
DCDCEN DDR3
DDR3 DDR3
DDR3
IC5400 L5400
SUB3.3V
7 2 3.3V
3.3V
11 7 14 5 37 38 12 37 8 IC8702 SUB1.8V
IC8600 IC2002(#1) IC8458(#2) IC8900 IC8902 3 2
1.8V
1.8V
14 Ethernet 1 EEPROM
EEPROM 4
Ethernet opamp
opamp USB Hub Flash
USB Hub Flash Peaks
Peaks LD4
LD4
3rd A21(#2) forforLOGO_LED
LOGO_LED ROM
ROM
POWER_ON / KEY3 Bluetooth
15 X8600 for 3D X8450 SUB3.3V
2nd P_PORT03
6 P_PORT03 IC5780 (*) IC5720 (*) FE_1.2V/2.5V
BL_ON L5780 TU_1.2V/2.5V SUB1.8V
2 2.5/1.2V
2.5/1.2V 2.5/1.2V 5
1 2.5/1.2V
A02 Only TX-DT50
IC6851 (*) TU6702-06
For SAT
17 For SAT TUNER
TUNER
convert
convert
Power POWER_ON
_SW IC5000
DCDCEN
GK IC5420 L5420 SUB5V IC8706 HDMI3.3V/HDMI_SW3.3V
2 5V5V 3.3V
4 3.3V 5
CI_POWER_ON
TV_SUB_ON
IC8660 6 12
4 IC8404(*) 17 KEY3 PANEL_VCC_ON2
3 3.3V 4 IC4700
3.3V 1 5V
5V 5 18 CI Slot BL_ON
CN8660 HDMI
HDMI SW
SW AVDD_ENB / PWM_ENB
P P15V
SD card JK1070(*) (OEBLK / OENB)
P_PORT03
(*): different by region CI_POWER_ON
(#1):only DT50 (#2):only ET50/DT50 12
FRC_XRST/RESETN
Power Supply Distribution (2/2) : T*-L**E5
TX-L**ET5/ET50, T*-L**DT50/E5 (TNPH0993**)
P15V
DCDCEN
IC5440 L5440 USB5V
2 5V
5V
1 1 1 1
IC8453 IC8454 IC8455(#2) IC8457’#2)
USB_Pow
USB_Pow USB_Pow
USB_Pow USB_Pow
USB_Pow USB_Pow
USB_Pow
6 6 6 6 (#2):only ET50/DT50

JK8450 JK8451 JK8452(#2) A20(#2)

1 1 1 1
P15V IC4900 USB USB USB
17 USB (WiFi)
AMP
24 AMP

P15V IC4901(#2)
17
AMP
24 AMP
PANEL_VCC_ON2 For E5
A18
IC5300 L5300 PNL12V 48-51 To LCD
2 12V
12V Module
(TCBoard)

For ET50/DT50
A15
PNL12V
1-9 To LCD To FR
SUB5V Module Board Only for TX-ET5
11-13 (To TC11)
(TCBoard)
AVDD_ENB 56
PWM_ENB
( OEBLK 57
/ OENB )

52
FRC_XRST/RESETN

13
 Power Supply Distribution : TX-L**ET5
TX-L**ET5** (TNPA5587**)
(FR board
TNPA5587**)

TC11

4,5
OEBLK / OENB

From A 9
FRC_XRST
Board
(From A15)
SUB5V
48-50
FRC_XRST OEBLK / OENB

TC01A IC9351 PNL3.3V

5 3.3V 1 IC9100
PNL12V PNL12V To LCD 3.3V
52-60 1-4
Module 8 IC9303
IC9350 FRC_2.5V
(TC Board) 5
EEPROM
EEPROM 2.5V 1
2.5V X9100
IC9302 FRC
FRC
L9301
2 Double
Double Speed
Speed
IC9300 8 1.8V
1.8V
FRCDCDCEN FRC_1.8V
V_Detect
V_Detect IC9301 IC9250
PNL12V L9300 DDR
DDR
8 1.0V FRC1.0V
1.0V
14
 Power Supply Distribution (1/2) : T*-L**WT50*
IC5000 T*-L**WT50*(TNPH0994**)
STB5.8V/STB5V 1.1V STB1.1V A10
9 31 1.1V
30
STB5.8V STB3.3V 5
3.3V
3.3V 32
28 STB_RST 10
6
HDMI5VA/B RESET
RESET 12 PEAKSRST

SUB5V
14 3.3
3.3 7
15
13 1 11 DCDCEN SUB_AI_3.3V
LED
TV_SUB_ON 2 SUB9V Remote
DCDCEN IC8100 L8102
SUB1.1V
9 1.1V
1.1V IC8000
1 DCDCEN SUB1.5V
IC8101
16V 3 P15V/ 8 1.5V L8101
1.5V X8300
DCDCIN IC8200 IC8201 IC8202 IC8203
5
DCDCEN DDR3
DDR3 DDR3
DDR3 DDR3
DDR3 DDR3
DDR3
IC5400 SUB3.3V
7 2 3.3V
3.3V
L5400 8 IC8702 SUB1.8V
11 1 37 38 5 12 37
IC8902 8 1.8V
IC8458 IC2002 IC8900 1.8V 1
14 IC5650 (#) A21 Flash EEPROM
EEPROM
7 IC8600 USB
USB Hub
Hub opamp
opamp Flash
3rd Bluetooth ROM
3.3V 3
4 3.3V 14Ethernet
Ethernet
for
forLOGO_LED
LOGO_LED ROM Peaks
Peaks
POWER_ON / KEY3 (for 3D) PRO4
PRO4
15 X8600 X8450
P_STMTIME6 SUB3.3V
2nd P_PORT03
6 P_PORT03 IC5780 (*) IC5720 (*) FE_1.2V/2.5V
BL_ON L5780 TU_1.2V/2.5V SUB1.8V
2 2.5/1.2V
2.5/1.2V 2.5/1.2V 5
1 2.5/1.2V
A02 Only TX-DT50
IC6851 (*) TU6702-06
For SAT
17 For SAT TUNER
TUNER
convert
convert
Power POWER_ON
_SW IC5000 SUB9V
DCDCEN
GK IC5420 L5420 SUB5V IC8706 HDMI3.3V
2 5V5V 3.3V 3
4 3.3V
TV_SUB_ON
IC8660 KEY3
4 19 32 PANEL_VCC_ON2
8 3.3V 1 IC3001
3.3V CI_POWER_ON
BL_ON
CN8660 V
V // A
A SW
SW IC8404 (*) 17 AVDD_ENB / PWM_ENB
P P15V SD card
1 5V
5V 5 18 CI Slot (OEBLK / OENB)
(*):only Euro JK1070 (*) P_PORT03
(#):only north America CI_POWER_ON 15
Power Supply Distribution (2/2) : T*-L**WT50*
T*-L**WT50* (TNPH0994**)
P15V
DCDCEN
IC5440 L5440 USB5V
8 5V
5V
1 1 1 1
IC8453 IC8454 IC8455 IC8457
USB_Pow
USB_Pow USB_Pow
USB_Pow USB_Pow
USB_Pow USB_Pow
USB_Pow
6 6 6 6

JK8450 JK8451 JK8452 A20

1 1 1 1
P15V IC4900 USB USB USB USB (WiFi)
17
AMP
24 AMP

P15V IC4901
17
AMP
24 AMP

PANEL_VCC_ON2

A16
IC5300 L5300
PNL12V To LCD
4 1-9
12V
12V Module
(TCBoard)

AVDD_ENB 56
PWM_ENB
( OEBLK 57
/ OENB )

16
 Power Supply Distribution (1/2) : T*-L**ET5/E50
IC5000 TC-L**ET5/E50, TH-L**ET5 (TNPH1006**)
STB5.8V/STB5V 1.1V STB1.1V A10
9 31 1.1V
30
STB5.8V STB3.3V 5
3.3V
3.3V 32
28 STB_RST 10
6
HDMI5VA/B RESET
RESET 12 PEAKSRST

SUB5V
14 3.3
3.3 7
15
13 1 11 DCDCEN SUB_AI_3.3V
LED
TV_SUB_ON 2 SUB9V IC3052 (*) Remote
8
DCDCEN AMP
AMP
IC8100 L8100
SUB1.1V
8 1.1V
1.1V IC8000
1 DCDCEN SUB1.5V
IC8101
16V 3 P15V/ 8 1.5V L8101
1.5V X8300
DCDCIN IC8200 IC8201
5
DCDCEN DDR3
DDR3 DDR3
DDR3
IC5400 SUB3.3V
7 2 3.3V
3.3V
L5400 7 14 8 IC8702 SUB1.8V
11 37 38 12 37 2
IC8600 IC8900 IC8902 3
IC8458 (*) 1.8V
1.8V
14 Ethernet
Ethernet Flash EEPROM
EEPROM 4 Peaks
USB
USB Hub
Hub Flash Peaks LD4
LD4
3rd ROM
ROM 10TU6702-06 6
POWER_ON / KEY3
15 X8600 TUNER
TUNER
2nd
6
BL_ON

A02 IC5000
DCDCEN
IC5420 L5420 SUB5V IC8706 HDMI3.3V/HDMI_SW3.3V
Power POWER_ON
2 5V5V CI_POWER_ON 3.3V 5
4 3.3V
_SW IC8660 IC8404 (*) 6 12
4 17
3 3.3V 4 IC4700
GK 3.3V 1 5V
5V 5 18 CI Slot
CN8660 HDMI
HDMI SW
SW TV_SUB_ON
SD card JK1070 (*) KEY3
PANEL_VCC_ON2
BL_ON
SUB5V OEBLK / OENB

P P15V IC9351 CI_POWER_ON

FRC_XRST/RESETN

(*):different by region 17
Power Supply Distribution (2/2) : T*-L**ET5/E50
TC-L**ET5/E50, TH-L**ET5 (TNPH1006**)
P15V
DCDCEN
IC5440 L5440 USB5V
2 5V
5V
1 1 1 1
IC8453 IC8454 IC8455 (*) IC8457
USB_Pow
USB_Pow USB_Pow
USB_Pow USB_Pow
USB_Pow USB_Pow
USB_Pow
6 6 6 6

JK8450 JK8451 JK8452 (*) A20

1 1 1 1
P15V IC4900 USB USB USB
17 USB (WiFi)
AMP
24 AMP
( except
(*):different by region
E50 series )

P15V
SUB5V

(TNPH0993**)
OEBLK / OENB (FR board
PANEL_VCC_ON2 FRC_XRST/RESETN TNPA5587**)
TC01A IC9351 PNL3.3V
4 3.3V 3 IC9100
IC5300 L5300
PNL12V To LCD 3.3V
1-4
2 12V
12V Module 8 IC9303
IC9350 FRC_2.5
(TC Board) 5
EEPROM
EEPROM 2.5V 1
2.5V V X9100
IC9302 FRC
FRC
L9301
2 Double
Double Speed
Speed
IC9300 8 1.8V
1.8V
FRCDCDCEN FRC_1.8V
V_Detect
V_Detect IC9301 IC9250
PNL12V L9300 DDR
DDR
8 1.0V FRC1.0V
1.0V
18
 Power Supply Distribution (1/2) : T*-L32E5
HDMI5VA/B T*- L32E5* (TNPH0992**)
IC5000
1.1V STB1.1V A10
4 IC5202 3 31 1.1V
STB5.8V 9 30
5V
5V STB3.3V 5
3.3V
3.3V 32
STB5V 28 STB_RST 10
6
RESET
RESET 12 PEAKSRST

SUB5V 13 PEAKSRST2
14 3.3
3.3 15 7
13 1 11 DCDCEN SUB_AI_3.3V
LED
TV_SUB_ON 2 SUB9V IC3052(*) Remote
8
DCDCEN AMP
AMP
IC8100 L8100
SUB1.1V
8 1.1V
1.1V IC8000
1 DCDCEN SUB1.5V
IC8101
16V 3 P15V/ 8 1.5V L8101
1.5V X8300
DCDCIN IC8200 IC8201
5
DCDCEN DDR3
DDR3 DDR3
DDR3
IC5400 SUB3.3V
7 2 3.3V
3.3V
L5400 7 14 8 IC8702 SUB1.8V
11 12 37 3 2
IC8600 IC8900 IC8902 1.8V
1.8V
14 Ethernet
Ethernet Flash EEPROM
EEPROM 4
Flash Peaks
Peaks LD4
LD4
3rd ROM
ROM 10TU6704-06 6
POWER_ON / KEY3
15 X8600 TUNER
TUNER
2nd
6
BL_ON

A02 IC5000
DCDCEN
IC5420 L5420 SUB5V IC8706 HDMI3.3V/HDMI_SW3.3V
Power POWER_ON
2 5V5V CI_POWER_ON 3.3V 5
4 3.3V
_SW IC8660 6 12
4 IC8404(*) 17
3 3.3V 4 IC4700
3.3V 1 5V
5V 5 18 CI Slot
CN8660 HDMI
HDMI SW
SW TV_SUB_ON
JK1070 KEY3
SD card PANEL_VCC_ON
BL_ON
AVDD_ENB
CI_POWER_ON
P P15V
(*):different by region 19
Power Supply Distribution (2/2) : T*-L32E5
T*-L32E5* (TNPH0992**)
P15V
DCDCEN
IC5440 L5440 USB5V
2 5V
5V
1 1
IC8453 IC8454
USB_Pow
USB_Pow USB_Pow
USB_Pow
6 6

JK8450 JK8451
1 1
P15V IC4900 USB USB
17
AMP
24 AMP
A15 A16 DCDC charge-pump:
VON31V
46 46 Refer to the Appendix page
AVDD_ENB 47 47
= AVDD_on (H=on) VOFF2(-6V)
17
IC4101
TCON15.6V D4121
DCDC
DCDC AVDD12.6V To LCD
9 12V 13-16 13-16
12V Module
PA4153 10
(TCBoard)
（ｆuse) 15 REG
REG 27 55-56 55-56
2.5V
2.5V DVDD2.5V
PANEL_VCC_ON 18
PEAKSRST2
= DVDD_on (H=on)
VCOM
IC4301 24 1-2 1-2
7
SUB3.3V DAC
DAC
9 5-10 5-10
(GAMMA)
(GAMMA)
49-53 49-53
VREF1--12

TCON2.5V
IC8000

20
 Protection circuit (L**DT50/ET50/E5(except 32inch)** / TX-L**ET5** )
TX-L**DT50B < A board :TNPH0993**>
< SOS signal >
SUB3.3V SUB1.5V USB5V SUB5V IC5000 Normal=“H”
SUB1.1V TU_1.2V/2.5V ASIC_SUBON/
P15V mute LCD_TV_SUB_ON (Emergency: 13 blinks)
8

A02
LD P SUB3.3V
OVP AD17
or 13

7
Panel STB3.3V
AD16 7 blinks
Normal=“L”
4 AD15
Normal=“L” BL_SOS
REG / 1 blinks IC8000
(after BL_on)

RESET Refer to the LD board page Peaks

LD4
FR board (only TX-L**ET5*)

IC9100
FRC IC4900 SUB3.3V

Double Audio
Blinking time SOS Content AD19
Speed AMP 22
1 Backlight SOUND_SOS
3 IROM (Power on error ) 9 blinks
7 SUB3.3V LCD Panel module (DT50/ET50**)
9 Sound
10 DT50/ET50 : ZWEI(T-CON)
IC A15/A18
37/42/47E5 : No use T-CON 10 blink (Depend on the panel)
TX-L**ET5 : FRC 37/42/47E5: No 10 blink
12 Back End ( inside of Peaks IC ) DT50/ET50: ZWEI SOS
Nothing (37/42/47E5)
13 Emergency TX-L**ET5 : FRC SOS / Power of Panel(PNL12V) SOS 21
 Protection circuit (L**WT50** )
T*-L**WT50 < A board :TNPH0994**>
< SOS signal >
SUB3.3V SUB1.5V USB5V SUB5V IC5000 Normal=“H”
ASIC_SUBON/
SUB1.1V TU_1.2V/2.5V P15V mute LCD_TV_SUB_ON (Emergency: 13 blinks)
8
A02
LD P 13 AH23 SUB3.3V
OVP
STB3.3V 7 blinks
7 AM31
Normal=“L”
4 AH24
Normal=“L” BL_SOS
1 blinks
IC8000
(after BL_on)
REG /
Peaks
Refer to the LD board page
RESET PRO4

IC4900
SUB3.3V
Audio
AMP 22
AL30
Blinking time SOS Content IC4901 SOUND_SOS
1 Backlight Audio 9 blinks Normal=“H”
3 IROM (Power on error )
LCD Panel module AMP 22
7 SUB3.3V
9 Sound IC
10 ZWEI (T-CON) T-CON 10 blink
12 Back End ( inside of Peaks IC ) ZWEI SOS
13 Emergency A16 22
 Protection circuit (TC/TH-L**ET5/E50**)
TC/TH-L**ET5/E50 < A board :TNPH1006**>
< SOS signal >
SUB3.3V SUB1.5V USB5V SUB5V IC5000 Normal=“H”
SUB1.1V TU_1.2V/2.5V ASIC_SUBON/
P15V mute LCD_TV_SUB_ON (Emergency: 13 blinks)
8

A02
Panel P SUB3.3V
OVP 13 AD17

STB3.3V 7 blinks
7 AD16
Normal=“L”
4 AD15
Normal=“L” BL_SOS
PNL12V 1 blinks IC8000
(after BL_on)

Refer to the LD board page

Peaks
Normal=“H”
TV_SOS LD4
47k 18 17
SOS_SENSE 8 blinks Normal=“L” AA15
(after Panel_Vcc_on)
REG /
47k

RESET SUB3.3V
Blinking time SOS Content IC4900
1 Backlight Audio 22 AD19
3 IROM (Power on error ) AMP SOUND_SOS
7 SUB3.3V
IC9100 9 blinks
8 Power for Panel
FRC
9 Sound
Double 10 blink
10 FRC FRC SOS / Power of Panel(PNL12V) SOS
Speed
12 Back End ( inside of Peaks IC )
13 Emergency 23
 Protection circuit (L32E5**)
T*-L32E5 < A board :TNPH0992**>
< SOS signal >
SUB3.3V SUB1.5V USB5V SUB5V IC5000 Normal=“H”
SUB1.1V TU_1.2V/2.5V ASIC_SUBON/
P15V mute LCD_TV_SUB_ON (Emergency: 13 blinks)
8

A02
Panel P SUB3.3V
OVP 13 AD17

STB3.3V 7 blinks
7 AD16
Normal=“L”
4 AD15
Normal=“L” BL_SOS
1 blinks IC8000
(after BL_on)
IC4101 Refer to the LD board page Peaks
VON31V
DCDC Normal=“H” LD4
TV_SOS
fault 14
18 17
SOS_SENSE 8 blinks Normal=“L” AA15
(after Panel_Vcc_on)
REG /

RESET
Blinking time SOS Content
1 Backlight IC4900 SUB3.3V
3 IROM (Power on error ) Audio
AD19
7 SUB3.3V AMP 22
SOUND_SOS
8 Power for Panel
9 blinks
9 Sound
12 Back End ( inside of Peaks IC )
13 Emergency 24
 Protection circuit block diagram of Panel Drive
TC/TH-L**ET5/E50

7, 24V
P15V 24V 8,
9 Power board
LCD_TV_SUB_ON
3 for LED Backlight
BL_SOS BL_SOS
P P2 7 1,2,3 10 P4

4 LED
13 1,3,5 TC01A
A A02
P15V 12V
1,
5V PNL12V
2,
3.3V 1.8V 1.5V 1.1V 3,
4 T-CON board
SUB3.3V DETECT
SUB1.8V
SUB1.5V
SUB1.1V
LCD Panel Module
DETECT
(OFF)

IC4900 8 7
AP-AMP SOS7(SUB3.3V)
22 IC5000
ANALOG
Sound_SOS -ASIC
IC8000
Peaks LD4 TV_SOS 17 18

IC9100
FRC

25
 Protection circuit block diagram of Panel Drive
TX-L**DT50/WT50
LD Power board
for LED Backlight
VLED (54V)
P15V 54V
1,
2
P15V IC9500
IC9500
LCD_TV_SUB_ON 5
10

P BL_SOS BL_SOS LED

LED Control
Control
P2 P4

13 1,3,5 4 TC01A
A A02
P15V 12V
LED

1,
5V PNL12V
2,
3.3V 1.8V 1.5V 1.1V 3,
4
T-CON board
SUB3.3V DETECT
SUB1.8V
SUB1.5V
SUB1.1V
(OFF) LCD Panel Module
IC4900 8 7
AP-AMP SOS7(SUB3.3V)
22 IC5000
ANALOG
Sound_SOS -ASIC
IC8000
Peaks LD4/Pro4

26
 IC5000
(Block Diagram)

Difference
AN34043AAVF : 30pin output = 1.14V
(AN34043A-VF : 30pin output = 1.2V) 27
Component Location
IC5400/L5400 < TNPH0993 >
(SUB3.3V) (This picture is
IC5440/L5440 trial model,
(USB5V) Just for reference.)
A02
From power board
IC8900
IC5420/L5420 (Flash)
(SUB5V)
A12
To speaker/woofer IC8000
(Peaks)
IC4900/4901
(Audio AMP)

IC5300(PNL12V) IC8902
(EEPROM)
IC8600 A15/A18
(LAN) To T-CON
IC4700
(HDMI SW)
IC8458
(USB-Hub) A20
To WiFi
A21
To Bluetooth
IC5000
A10 (STB3.3/1.1V)
To Power LED
IC8702(SUB1.8V)

IC5780(TU1.2V/2.5V)
28
 Power On Sequence ( AC Plug in ) : DT50
Just AC plug in ( to Power off or Standby ) Reference : waveform of TX-L42DT50
( The time is just reference. Checked by trial model.)

AC plug in This page is No need for north America model

STB5.8V/5V(TP2017)
STB3.3V(from IC5000-32pin:TP5002)
STB1.1V(from IC5000-30pin:TP5003)

STB_RST
(from IC5000-28pin to IC8000) TP8910 94s : to Standby ( OPT = light on )
2.3s (to OFF)

X8300 (IC8000) … … … … … … … … … … … … … … … … … … …… … … .

20ms
TV_SUB_ON *There is no OFF state in North America models.
(from IC8000 to P-PCB via A02-13pin(P2-7pin) ) 266ms : to OFF (94s to standby) : refer to the Power board page

P15V input 38ms

DCDCEN 52ms
( from IC5000-11pin to each DC power IC )

SUB5V/3.3V/1.5V/1.1/USB5V output
( If low voltage, fast 3 blinks )
SUB3.3V SENSE (IC8001) SUB9V output

P_XRST/PEAKSRST
180ms
( from IC5000-12pin to IC8000 )

Flash CE
(IC8000 to IC8900-9pin :R8914)
186ms
186-265ms 29
 Power On Sequence ( Power on:1/3 ) : DT50
Power-ON Reference : waveform of TX-L42DT50
( The number of the time is reference. )

STB5.8V/5V(TP2017)
STB3.3V(from IC5000-32pin:TP5002)
STB1.1V(from IC5000-30pin:TP5003)

STB_RST
(from IC5000-28pin to IC8000) TP8910

Power_SW_ON PUSH
No need for north America model

X8300 (IC8000) … … … … … … … … … … … … … … … … … … …… … … .

13ms
TV_SUB_ON
(from IC8000 to P-PCB via A02-13pin(P2-7pin) )

P15V input 36ms

DCDCEN
( from IC5000-11pin to each DC power IC )

SUB5V/3.3V/1.5V/1.1/USB5V output
SUB3.3V SENSE (IC8001)

SUB9V output 46ms

30
 Power On Sequence ( Power on:2/3 ) : DT50
TV_SUB_ON DCDCEN

P_XRST/PEAKSRST
180ms
( from IC5000-12pin to IC8000 )

Flash CE
(IC8000 to IC8900-9pin :R8914)
184ms ( The detail is different from the model. )

184-264,268-282ms 510-670ms 1.5s-2.2s 2.4s---

R_LED A10-3pin Low = Light ON Power LED (RED)

Power RED LED ( to Standby)

G_LED A10-4pin
Power GREEN LED ( To On)
Low = Light ON blink Power LED (GREEN)
266ms

PANEL_VCC_ON2
280ms
(from IC8000 to IC5300-1pin)

PNL12V output 280ms

PWM_ENB 428ms
( from IC8000 to T-CON A15-57pin )

BL_ON (Backlight_ON) 428ms

( from IC8000 to A02-6pin (P2-11pin))

31
 Power On Sequence ( Power on:3/3 ) : DT50
TV_SUB_ON DCDCEN --- 3.5s

BT_LR 428ms
( from T-CON to Bluetooth Adaptor(A21) )

AVDD_ENB (OEBLK) 428ms

( from IC8000 to T-CON A15-56pin )

P_SDA1 (PEAKS_EEP_SDA) …………

(IC8000 to IC8902-5pin ) ( The detail is different from the model. )
510ms 910ms 2.5s
1.9s
3.25s-3.45s

TCON_SDA 46ms
(from IC8000 to T-CON A15-54pin )

1.2V
Picture signal
( from IC8000 to TCON board) 3.25s

AMP_XRST/P_PORT21
(IC8000 to IC4900/01-4pin) 3.38s

MON_MUTE
(IC8000 to IC8000
through IC5000 (25pin to 24pin) ) 3.38s
266ms

SP_HP_MUTE
(IC8000 to Headphone signal lines
through IC5000 (22pin to 23pin) )

Optical Audio out (RED) 3.4s Light ON …………

32
 Power On Sequence ( LD board ) : DT50
TV_SUB_ON DCDCEN

66-430ms --- 3.35s --- 3.65s

(LD board)
Low = Light ON
Output from LD board to Panel (LED-K*)

P15V ( from P board to LD4-1,2pin ) 15.6V

VLED ( from P board to LD4-5pin ) 54V

FB ( LD4-7pin ) LD to P board
2.4V

33
Note

34
 Power On Sequence ( AC Plug in ) : ET5
Just AC plug in ( to Power off or Standby ) Reference : waveform of TX-L37ETW5
( The time is just reference. Checked by trial model.)

AC plug in
20ms

STB5.8V/5V(TP2017)
STB3.3V(from IC5000-32pin:TP5002)
STB1.1V(from IC5000-30pin:TP5003)

STB_RST
(from IC5000-28pin to IC8000) TP8910
2.3s (to OFF) 33s : to Standby ( OPT = light on )

X8300 (IC8000) … … … … … … … … … … … … … … … … … … …… … … .

20ms
TV_SUB_ON *There is no OFF state in North America models.
(from IC8000 to P-PCB via A02-13pin(P2-7pin) ) 236ms : to OFF (32s to standby) : refer to the Power board page

P15V input 13ms 26ms

DCDCEN
( from IC5000-11pin to each DC power IC )

SUB5V/3.3V/1.5V/1.1/USB5V output
( If low voltage, fast 3 blinks )
SUB3.3V SENSE (IC8001) SUB9V output

P_XRST/PEAKSRST
150ms
( from IC5000-12pin to IC8000 )

Flash CE
(IC8000 to IC8900-9pin :R8914)
154ms
154-234ms 35
 Power On Sequence ( Power on:1/4 ) : ET5
Power-ON Reference : waveform of TX-L37ETW5
( The number of the time is reference. )

STB5.8V/5V(TP2017)
STB3.3V(from IC5000-32pin:TP5002)
STB1.1V(from IC5000-30pin:TP5003)

STB_RST
(from IC5000-28pin to IC8000) TP8910

Power_SW_ON PUSH
No need for north America model

X8300 (IC8000) … … … … … … … … … … … … … … … … … … …… … … .

13ms
TV_SUB_ON
(from IC8000 to P-PCB via A02-13pin(P2-7pin) )

P15V input 13ms

DCDCEN
( from IC5000-11pin to each DC power IC )

SUB5V/3.3V/1.5V/1.1/USB5V output
SUB3.3V SENSE (IC8001)

SUB9V output 13ms

36
 Power On Sequence ( Power on:2/4 ) : ET5
TV_SUB_ON DCDCEN

P_XRST/PEAKSRST
150ms
( from IC5000-12pin to IC8000 )

Flash CE
(IC8000 to IC8900-9pin :R8914)
150ms ( The detail is different from the model. )
1.6s---
150-250ms 460-635ms 1.5-1.55s

24V ( from P board to LD P4-7,8pin ) 23.3V

R_LED A10-3pin Low = Light ON Power LED (RED)

Power RED LED ( to Standby)

G_LED A10-4pin Low = Light ON blink

235ms Power LED (GREEN)
Power GREEN LED ( To On)

PANEL_VCC_ON2
250ms
(from IC8000 to IC5300-1pin)

PNL12V output 250ms

FRCDCDCEN 254ms
(from IC9300-1pin to IC9301/9302/9351) (Trigger:
PNL12V)

PNL3.3V/FRC2.5V/1.8V/1.0V output

37
 Power On Sequence ( Power on:3/4 ) : ET5
TV_SUB_ON SUB3.3V

X9100 (to IC9100) …………

346ms
FRC_XRST/RESETN
(from IC80000 to IC9100-183pin A15-52)

P_SDA1 (PEAKS_EEP_SDA) …………

(IC8000 to IC8902-5pin ) ( The detail is different from the model. )
475ms 875ms 2.5s
1.9s
650ms
FRC_DONE
(from IC9100-202pin A15-51 to IC8000 )

1.2V
Picture signal
( from IC8000 to TCON board) 270ms 3.42s

AMP_XRST/P_PORT21
(IC8000 to IC4900-4pin) 3.42s

Optical Audio out (RED) 3.42s Light ON …………

MON_MUTE
(IC8000 to IC8000
through IC5000 (25pin to 24pin) )
3.46s
235ms
SP_HP_MUTE
(IC8000 to Headphone signal lines
through IC5000 (22pin to 23pin) )
3.6s-4.65s
250ms
HOST_SDA
P_SDA0 (HOST_SDA)
(from IC8000 to IC9100 A15-54pin )
(IC8000 to IC9100 / CN0100-7pin )
38
 Power On Sequence ( Power on:4/4 ) : ET5
TV_SUB_ON SUB3.3V output

BL_ON (Backlight_ON) 4.16s

( from IC8000 to A02-6pin (P2-11pin))

AVDD_ENB 5.06s
( from IC8000 to T-CON A15-56pin )

--- 5.3s
Picture signal ( from IC9100 to Panel-TCON)
1.2V
336ｍｓ
250ｍｓ 1.0V

39
P board

40
Power Supply Block Diagram : T*-L**ET5/E5
D7216 T*-L42ET5 ( TNPA5608 )
D7106(7102) T7202(7201) C7213
Rectifier P4
D7401 PA 7401 7
PFC 7 Q7201 ,7402 8
IC7201 C7422
24V Q7402 FUSE 9
8 24V
VCC Q7403
PA 7402
VCC D7408 16V 1
VCC 10 ,7409
T7301 C7423 2
IC7301 FUSE
3
+STB IC 7502 16V
HO 15
Q7202 D7407 12V 5
Q7301 1,2 5
D7104, VH LO 11 C7514
7105 Start Vcc
5V
Q7302 Reg
5V STB
R7306- 1
PC7301 3
7308
4 CE
FB feedback

5 IC7401 P2
CS
(mode change)

REF 5V Good
PC7303
6 3
Q7303

Standby/ON SUB-ON
Switch
P L=ON PC7302
Q7401
7

41
Power Supply Block Diagram : TX-L37ET5
T*-L37ET5 ( TNPA5583 ) B: TV_SUB_ON=H PFC on B=380V
D7200 TV_SUB_ON=L PFC off B=140V/310V (depend on the AC voltage)
A T7202 C C7301 B
D7102
Rectifier Y Q7512 P4
IC7502 Q7501
S D7501 7
PFC 7 Q7200 REG
8
IC7201 C7502
24V 9
8 24V
VCC V Q7502
D
VCC D7502
1
VCC 6 T7301
C7511 16V 2
IC7301 G 16V 3
IC 7400
Q7201 OUT 5 4 1,2 5
VH 5V Q7301 5VS
D7301, Start Vcc 8 DCDC
7302 PC7302 2 8
R7301- 2 EN Power
7306
Q FB feedback SW

H
IC7501
P2
Q7510

PC7303 H=ON

I TV_SUB_ON
Q7304
PFC ON
P L=ON PC7304
Q7511
7

42
Simple Power On Sequence

< Plug In > < Power On >

Power Switching circuit (IC7301/T7301) Power Switching circuit (IC7301/T7301)

P
start working P keeps working.
STB5V keeps output.

P STB5V output
PowerSW/
Remote Power on
A Output TV_SUB_ON signal

P PFC circuit (IC7201/T7201or7202 ) start working

A Output TV_SUB_ON signal

P PFC circuit (IC7201/T7201or7202 ) start working

P 16V/24 output

Peaks read the IC8900 P 16V/24 output

A

A Stop TV_SUB_ON signal A Output PANEL_VCC_ON2 signal

P PFC circuit (IC7201/T7201or7202 ) stop A Output BL_ON_ON signal

Power off Standby Power on

Power Switching circuit (IC7301/T7301)
P keeps working.
STB5V keeps output.
43
 TV_SUB_ON Timing Chart
< TX-**, TH-**, Brazil/Argentina > < TC-** (except Brazil/Argentina) >

32s Keep “H” Keep “H”

Power Off
TV-SW
Stand-by
Remote-SW
Power On
TV-SW
Power Off Stand-by TV-SW Power On
LED: Black LED: Red LED: Green LED: Black LED: Black Remote-SWLED: Red
2s Keep “H”
Plug Plug Plug Plug Plug Plug Plug Plug Plug Plug Plug Plug
Out In Out In Out In Out In Out In Out In
240ms 32s Keep “H” 155ms Keep “H”
AC Off AC Off

After plug in, the Peaks IC output the TV_SUB_ON signal once.
The period of keeping “high” of TV_SUB_ON is depend on the previous situation.
155ms/240ms/2s/32s Power On Status
Plug in Power SW On
40ms 12.4ms Keep “H”
TV_SUB_ON

D (Vcc for PFC-IC)

C (for Switching Q7200 )

7.9ms 7.9ms

16V Output
(P2-1,2,3pin)) 12.4ms 12.4ms

24V Output
(P4-7,8pin)) 83ms 83ms

(The time is for the TX-L37ETW5. It’s different from the model.) 44
 < Plug In > Plug in Reference : waveform of T*-L37ET5 (TNPA5583)

A 140V/310V
20ms 0V - 140V/310V

B 20ms 140V/310V 380V

Q (VH:initial power for IC7301) 0-26V

S (Vcc for IC7301/7201) 20ms 8-15V

G (for switching Q7301) 10.4ms 0-10V

H (Feedback to IC7301) 10.4ms 0-5V

6.2ms
V (internal 24V) 3.4ms 26V

Y (internal 16V) 17V

3.4ms

I (5VS-EN) 12V

5VS Output (P2-5pin) 5.2V

TV_SUB_ON from A board 20.3ms 2.8V

D (Vcc for PFC-IC) 15V

C (for Switching Q7200 ) 7.9ms 0-15V

16V Output (P2-1,2,3pin)) 12.4ms 17V

24V Output (P4-7,8pin)) 83ms 26V

45
 < Power On > SW On Reference : waveform of TX-L37ETW5
A 140V/310V
0V - 140V/310V
B 140V/310V 380V

Q (VH:initial power for IC7301) 0-26V

S (Vcc for IC7301/7201) 8-15V

G (for switching Q7301) 0-10V

H (Feedback to IC7301) 0-5V

V (internal 24V) / Y (internal 16V) 26V/17V

I (5VS-EN) 12V

5VS Output (P2-5pin) 5.2V

Power SW (P2-8pin) 2.8V

12.4ms
TV_SUB_ON from A board 2.8V

D (Vcc for PFC-IC) 15V

C (for Switching Q7200 ) 7.9ms 0-15V

16V Output (P2-1,2,3pin)) 12.4ms 17V

24V Output (P4-7,8pin)) 83ms 26V

46
 Component Location
< TNPA5583 >
Q7200 Q7301 IC7201
(for Switching Power) T7301 D7501/02 Q7502 Q7501
(for PFC)
(for 24V/16V) (16V SW) (24V SW) (PFC-IC)

P4

P2

T7202 Be careful Ground pin

(L for PFC) The base of primary area (3rd pin)
IC7301 is not Chassis. If you check
D7102 IC7400
(AC input Rectifier) PC7302/04/03 (Power-IC) by oscilloscope, don’t plug
(Photo Coupler) (STB5V IC) in the ground pin (3rd pin)
of the oscilloscope.
Isolate it from the earth
of AC inlet. ( This picture is a
Japanese type 47)
 Component Location
< TNPA5608 > D7401/02 Q7403 D7408/09
(for 24V) (16V SW) (for 16V)

Q7402
(24V SW)
T7301

P4 P2 P4

Q7201 Q7301/02
(for PFC) (for Switching
Power)
PC7303/01/02
(Photo Coupler)

T7202or01 IC7301
(L for PFC) (Power-IC)

Be careful Ground pin

D7106 IC7201 The base of primary area (3rd pin)
(AC input Rectifier) (PFC-IC) is not Chassis. If you check
by oscilloscope, don’t plug
in the ground pin (3rd pin)
of the oscilloscope.
Isolate it from the earth
of AC inlet. ( This picture is a
Japanese type 48)
LD board

49
 Block Diagram of LD board (DT50/WT50*)
< Power for LED Backlight > IC9500 checks the voltage and current of each output LED-K#.
If disconnecting one of LD1,LD2,LD3,LD4,A15 connector, 1 blink is happened.

A P P4 LD4 LD (TNPA5615)
(TNPA5615) LD1 , LD2

VLED ( DC54V* ) .....

P15V LCD Panel

A02 P2
VCC(15.6V)
Module
IC8000
IC8000 BL_ON (High=ON)
IC9500
IC9500
(LED Backlight)
Peaks
Peaks LED
LED Control
Control check LED–K1
( 1 Blink ) BL_SOS (Low=Normal)
G1
PWM_ENB PWMRST1
AMP
check
PWMRST2
STB5.8V . L
LED–K2
. O
. . Bright
P15V G
.
PWMRST8 I G2
AMP .
.
C .
. LED–K16

IC5300
IC5300 G16 Dark
REG
REG 12V
12V

AMP
Lighting Period
PNL12V LD3 DVDD(3.3V)
A15
TCON
PWMRST1-8 T-CON
T-CON (LCD PANEL)
IC
IC

PNL12V 50
<Reference> Block Diagram of LED drive (32E5*)

A P (TNPA5596) P3
A02 P2
ANODE1,2 ( DC**V )
STB5.8V
LCD Panel
P15V VCC
Module
IC8000
IC8000 BL_ON (High=ON)
IC7800
IC7800 LED
LED Control
Control
LED1
(LED Backlight)
Peaks
Peaks
( 1 Blink ) BL_SOS (Low=Normal)

AMP
BL_POW_ON (High = OUTPUT)

IC5000
IC5000 LED2

5 Bright
4 3
BL_IN BL_OUT/
BL_PWM1 PWM1,2 AMP
LED3

LED4

Dark

AMP
Lighting Period
(Bright)

51
<Reference> Block Diagram of LED drive (except DT50/WT50/32E5*)

A P P4

A02 P2
( DC**V )
STB5.8V
LCD Panel
P15V Module
IC8000
IC8000 BL_ON (High=ON)
LED
LED Control
Control
LED1
(LED Backlight)
Peaks
Peaks
( 1 Blink ) BL_SOS (Low=Normal)

AMP
BL_POW_ON (High = OUTPUT)

IC5000
IC5000 LED2

5 Bright
BL_PWM
4 3
BL_IN BL_OUT/
BL_PWM1 AMP
LED3

LED4

Dark

AMP
Lighting Period
A15
(Bright)

BL_PWM

52
Appendix

53
 Power for LCD Panel Drive
E5 (except32inch) LG Panel (normal speed)

A
DC/DC Back Light
Power
for LED (LED)
TNPH0993

Dr LCD
LCD Panel
Panel

DC/DC

Power for
IC8000
Panel
(Peaks LD4)
drive Dr
Resize
IP conv. T-CON

LCD Panel Module

E5 (32inch only) Panasonic Panel (normal speed)

A DC/DC
TNPH0992 Power Back Light
for LED (LED)
(TNPH0993 + DCDC )

DC/DC
Dr LCD
LCD Panel
Panel
Power for
Panel drive

IC8000
(Peaks LD4)
Resize
IP conv. Dr

T-CON

LCD Panel Module 54

DC/DC power supply : Charge Pump Circuit (plus voltage output)

Rectifier

10V

(10V) DC20V
(rectified)

10V
10V
20V
0V
10V

10V

(10V+10V=20V)
DC20V
(rectified)

10V
55
DC/DC power supply : Charge Pump Circuit (minus voltage output)

Rectifier
10V
10V
(0V)
DC-10V
(rectified)

10V

0V 0V

-10V
10V
10V
(0-10V=-10V)
DC-10V
(rectified)

56
Power Supply for LCD Panel ( T*-L32E5* )

Schematic Diagram Regulate

< T*-L32E5* >

Regulate

57
 < Around IC4101 : 2 steps and minus charge pump > < T*-L32E5* >
13.7V
AVDD12.6V

Rectifier
DC26V

13.7V 13V 26V

0V 13V

DC39V VON31V
TCON15.6V AVDD12.6V REG
REG
13.7V
26V 39V

IC4101 26V
Power
Power
IC Q4106
IC

< Case Study > 13V

Defective component :
Q4106 and IC4101 (L4106) REG
REG
DC -13V
0V VOFF2_-6V

-13V
58
 < Around IC4101 : 2 steps and minus charge pump > < T*-L32E5* >
13.7V
AVDD12.6V

DC26V

13.7V

13V 26V
0V
13V

AVDD12.6V DC39V VON31V

TCON15.6V
13.7V REG
REG

26V 39V
IC4101
Power
Power 26V
IC Q4106
IC

< Case Study > 13V

Defective component :
Q4106 and IC4101 (L4106) REG
REG
DC -13V
0V VOFF2_-6V

-13V
59
Power Supply for LCD Panel ( Reference : T*-L32X30* )

Schematic Diagram
< T*-L32X30* >

60
 < Around IC4150 : 2 steps charge pump > < T*-L32X30* >
13.7V
AVDD12.6V

Rectifier
DC26V

13.7V 13V 26V

0V 13V

DC39V VON31V
TCON15.6V AVDD12.6V REG
REG
13.7V
26V 39V

IC4150 26V
26V
Power
Power
Q4154 VOFF1_-13V
IC
IC
REG
REG
DC -26V
VOFF2_-6V
-13V

< Case Study > 13V -26V

Defective component :
Q4150 and IC4150 (L4153)
DC -13V
0V

-13V
61
 < Around IC4150 : 2 steps charge pump > < T*-L32X30* >
13.7V
AVDD12.6V

DC26V

13.7V

13V 26V
0V
13V

AVDD12.6V DC39V VON31V

TCON15.6V
13.7V REG
REG

26V 39V
IC4150
Power
Power 26V
Q4154 26V
IC
IC VOFF1_-13V

REG
REG
DC -27V
VOFF2_-6V
-13V

< Case Study > 13V -26V

Defective component :
Q4150 and IC4150 (L4153)
DC -13V
0V

-13V
62