Panasonic TH-P50XT50 Schematic

ORDER NO.PAVCTH1203004CE

Plasma Television

Model No. TH-P50XT50A TH-P50XT50D TH-P50XT50G TH-P50XT50K TH-P50XT50M TH-P50XT50P TH-P50XT50S TH-P50XT50V

GPF15D-A Chassis

© Panasonic Corporation 2012.

Unauthorized copying and distribution is a violation of law.

TABLE OF CONTENTS

		PAGE
1	Safety Precautions -----------------------------------------------	3
	1.1. General Guidelines ----------------------------------------	3
	1.2. Touch-Current Check--------------------------------------	3
2	Warning --------------------------------------------------------------	4
	2.1. Prevention of Electrostatic Discharge (ESD)
	to Electrostatically Sensitive (ES) Devices ----------	4
	2.2. About lead free solder (PbF) ----------------------------	5
3	Service Navigation------------------------------------------------	6
	3.1. PCB Layout--------------------------------------------------	6
	3.2. Applicable signals------------------------------------------	7
4	Specifications ------------------------------------------------------	8
5	Technical Descriptions----------------------------------------	10
	5.1. Specification of KEY for DTCP-IP, One-to-
	One, Widevine and Netflix ----------------------------	10
	5.2. USB HDD Recording (A only)-------------------------	10
	5.3. Panel-Type setting ---------------------------------------	10
6	Service Mode -----------------------------------------------------	11
	6.1. How to enter into Service Mode ----------------------	11
	6.2. Option - Mirror---------------------------------------------	13
	6.3. Service tool mode----------------------------------------	13
	6.4. DRV Check - USBHDD Check------------------------	14
	6.5. Hotel mode-------------------------------------------------	14
	6.6. Data Copy by SD Card ---------------------------------	15
7	Troubleshooting Guide----------------------------------------	18
	7.1. Check of the IIC bus lines------------------------------	18
	7.2. Power LED Blinking timing chart ---------------------	19
	7.3. No Power---------------------------------------------------	20
	7.4. No Picture--------------------------------------------------	21
	7.5. Local screen failure--------------------------------------	22
8	Disassembly and Assembly Instructions---------------	23
	8.1. Disassembly Flow Chart for the Unit ----------------	23
	8.2. Disassembly Procedure for the Unit-----------------	24
9	Measurements and Adjustments --------------------------	28
	9.1. Adjustment-------------------------------------------------	28
10	Block Diagram ---------------------------------------------------	31
	10.1. Main Block Diagram -------------------------------------	31
	10.2. Block (1/4) Diagram -------------------------------------	32
	10.3. Block (2/4) Diagram -------------------------------------	33
	10.4. Block (3/4) Diagram -------------------------------------	34
	10.5. Block (4/4) Diagram -------------------------------------	35
11	Wiring Connection Diagram ---------------------------------	37
	11.1. Caution statement.---------------------------------------	37
	11.2. Wiring (1)---------------------------------------------------	37
	11.3. Wiring (2)---------------------------------------------------	38
	11.4. Wiring (3)---------------------------------------------------	39
12	Schematic Diagram
13	Printed Circuit Board
14	Exploded View

2

1 Safety Precautions

1.1.General Guidelines

1.When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials.

2.When wiring units (with cables, flexible cables or lead wires) are supplied as repair parts and only one wire or some of the wires have been broken or disconnected, do not attempt to repair or re-wire the units. Replace the entire wiring unit instead.

3.When conducting repairs and servicing, do not twist the Fasten connectors but plug them straight in or unplug them straight out.

4.When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.

5.After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

6.After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.

1.2.Touch-Current Check

1.Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.

2.Connect a measuring network for touch currents between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure 1.

3.Use Leakage Current Tester (Simpson 228 or equivalent) to measure the potential across the measuring network.

4.Check each exposed metallic part, and measure the voltage at each point.

5.Reserve the AC plug in the AC outlet and repeat each of the above measure.

6.The potential at any point (TOUCH CURRENT) expressed as voltage U1 and U2, does not exceed the following values: For a. c.: U1 = 35 V (peak) and U2 = 0.35 V (peak);

For d. c.: U1 = 1.0 V,

Note:

The limit value of U2 = 0.35 V (peak) for a. c. and U1 = 1.0 V for d. c. correspond to the values 0.7 mA (peak) a. c. and 2.0 mA d. c.

The limit value U1 = 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100 kHz.

7.In case a measurement is out of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer.

Figure 1

3

2 Warning

2.1.Prevention of Electrostatic Discharge (ESD) to Electrostatically

Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor [chip] components. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD).

1.Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test.

2.After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3.Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4.Use only an anti-static solder removal device. Some solder removal devices not classified as [anti-static (ESD protected)] can generate electrical charge sufficient to damage ES devices.

5.Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6.Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material).

7.Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.

Caution

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8.Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise ham less motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device).

4

2.2.About lead free solder (PbF)

Note: Lead is listed as (Pb) in the periodic table of elements.

In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu). That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.

This model uses Pb Free solder in it's manufacture due to environmental conservation issues. For service and repair work, we'd suggest the use of Pb free solder as well, although Pb solder may be used.

PCBs manufactured using lead free solder will have the PbF within a leaf Symbol PbF stamped on the back of PCB.

Caution

•Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40 °C) higher. Please use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).

•Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C).

If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before applying Pb solder. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.

•After applying PbF solder to double layered boards, please check the component side for excess solder which may flow onto the opposite side. (see figure below)

Suggested Pb free solder

There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.

5

3 Service Navigation

3.1.PCB Layout

Board Name	Function
PSS	Power Supply, Sustain Drive
	Non serviceable.
	PSS-Board should be exchanged for service.
A	Main AV input, processing
K	Remote receiver, Power LED, C.A.T.S sensor
C1	Data Driver (Lower Right)
C2	Data Driver (Lower Left)
SN	Scan Drive

6

3.2.Applicable signals

Q COMPONENT (Y, PB, PR) (from AV2 terminal), HDMI

		Signal name	COMPONENT	HDMI
525 (480)	/ 60i, 60p		*	*
625 (576)	/ 50i, 50p		*	*
750 (720)	/ 60p, 50p		*	*
1,125 (1,080)		/ 60i, 50i	*	*
1,125 (1,080)		/ 60p, 50p, 24p		*

* Mark: Applicable input signal

Q PC (from D-sub 15P)

	Signal name	Horizontal frequency (kHz)	Vertical frequency (Hz)
640 × 480 @60 Hz		31.47	59.94
800 × 600 @60 Hz		37.88	60.32
852 × 480 @60 Hz		31.44	59.89
1,024	× 768 @60 Hz	48.36	60.00
1,280	× 1,024 @60 Hz	63.98	60.02
1,280	× 768 @60 Hz	47.70	60.00
1,366	× 768 @60 Hz	48.39	60.04

Applicable input signal for PC is basically compatible to VESA standard timing.

Q PC (from HDMI terminal)

	Signal name	Horizontal frequency (kHz)	Vertical frequency (Hz)
640 × 480 @60 Hz		31.47	60.00
1,280	× 720 @60 Hz	45.00	60.00
1,920	× 1,080 @60 Hz	67.50	60.00

Applicable input signal for PC is basically compatible to HDMI standard timing.

Note

•Signals other than above may not be displayed properly.

•The above signals are reformatted for optimal viewing on your display.

•PC signal is magnified or compressed for display, so that it may not show fine detail with sufficient clarity.

7

4 Specifications

Sound
Speaker	(160 mm × 40 mm) × 2, 8Ω
Audio output	20 W ( 10 W + 10 W )
Headphones	M3 (3.5 mm) stereo mini Jack × 1
Receiving systems / Band name (A)
PAL B/G	Reception of Off air broadcasts
Digital TV	7 MHz VHF/UHF (Australia) free-to-air TV broadcast reception
PAL 60 Hz	Playback of NTSC tape from some PAL Video recorders (VCR)
M.NTSC	Playback from M.NTSC Video recorders (VCR)
NTSC	Playback from NTSC Video recorders (VCR)
Receiving systems / Band name
(Except A)

Receiving Channels (Except A)	VHF BAND
	2-12 (PAL/SECAM B, K1)	0-12 (PAL B AUST.)
	1-9 (PAL B N.Z.)	1-12 (PAL/SECAM D)
	1-12 (NTSC M Japan)	2-13 (NTSC M USA)
	UHF BAND
	21-69 (PAL G, H, I/SECAM G, K, K1)
	28-69 (PAL B AUST.)	13-57 (PAL D, K)
	13-62 (NTSC M Japan)	14-69 (NTSC M USA)
	CATV
	S1-S20 (OSCAR)	1-125 (USA CATV)
	C13-C49 (JAPAN)	S21-S41 (HYPER)
	Z1-Z37 (CHINA)	5A, 9A (AUST.)
Aerial - Rear	Standard Belling & Lee connector (A), VHF/UHF (Except A)
Operating Conditions	Temperature:	0 °C - 40 °C (Except A) 0 °C - 35 °C (A)
Connection terminals	Humidity:	20 % - 80 % RH (non-condensing)
AV1 IN
AUDIO L - R	RCA PIN Type × 2	0.5 V [rms]
VIDEO	RCA PIN Type × 1	1.0 V [p-p] (75 Ω)
AUDIO OUT
AUDIO L-R	RCA PIN Type × 2	0.5 V [rms] (high impedance)
AV2 IN
AUDIO L - R	RCA PIN Type × 2	0.5 V [rms]
COMPONENT	Y	1.0 V [p-p] (including synchronization)
	PB/CB, PR/CR	± 0.35 V [p-p]
VIDEO	RCA PIN Type × 1	1.0 V [p-p] (75 Ω)
HDMI 1 / 2 input	TYPE A Connectors
	• This TV supports "HDAVI control 5" function.
PC	HIGH-DENSITY D-SUB 15PIN
	R,G, B:	0.7 V [p-p] (75 Ω)
	HD, VD:	TTL Level 2.0 - 5.0 V [p-p] (high impedance)
	• Applicable input signals:	VGA, SVGA, WVGA, XGA
		SXGA, WXGA ...... (compressed)
Card slot	SD Card slot × 1
ETHERNET	10BASE-T / 100BASE-TX
USB 1 / 2	USB 2.0 TYPE A Connectors DC 5 V, Max. 500 mA
DIGITAL AUDIO OUT	PCM / Dolby Digital / DTS, Fiber optic
Bluetooth wireless technology*1
Standard Compliance	Bluetooth 3.0
Frequency Range	2.402 GHz - 2.480 GHz
*1: Not all the Bluetooth compatible devices are available with this TV.
Power Source (Except A)	AC 220 - 240 V, 50 / 60 Hz (Except P)
	AC 110 - 240 V, 50 / 60 Hz (P)

8

Power Consumption (A)
Power rating	AC 220-240 V, 50 / 60 Hz 1.4 A
Normal (Home) mode	122 W
Standby condition	0.4 W
Power Consumption (Except A)
Power Rating	265 W (Except P)	270 W (P)
Standby condition	0.4 W
Display panel
Panel system	Plasma panel
Visible screen size (diagonal)	127 cm / 50 inches
Number of pixels	786,432 (1,024 (W) × 768 (H)), [3,072 × 768 dots]
Dimensions (W × H × D)	1,186 mm × 764 mm × 335 mm (With Pedestal)
	1,186 mm × 717 mm × 84 mm (TV only)
Mass	25.5 kg Net (With Pedestal)
	22.0 kg Net (TV only)

Note

• Design and Specifications are subject to change without notice. Mass and Dimensions shown are approximate.

9

5 Technical Descriptions

5.1.Specification of KEY for DTCP-IP, One-to-One, Widevine and Netflix

5.1.1.		General information:
1.	EEPROM (IC8902) for spare parts has the seed of KEY for each.
2.	The final KEY data will be generated by Peaks IC (IC8000) when SELF CHECK was done and are stored in both Peaks IC
	(IC8000) and EEPROM (IC8902).
	Four KEY are not generated for all models.
	The necessary KEY are only generated and stored depend on the feature of models.
5.1.2.		Replacement of ICs:

When Peaks IC (IC8000) is replaced, EEPROM (IC8902) should be also replaced with new one the same time. When EEPROM (IC8902) is replaced, Peaks IC (IC8000) is not necessary to be replaced the same time.

After the replacement of IC, SELF CHECK should be done to generate the final KEY data.

How to SELF CHECK: While pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.

TV will be forced to the factory shipment setting after this SELF CHECK.

5.1.3.Model and Keys:

Model No.			Keys
	One-to-One	DTCP-IP		WIDEVINE	Netflix
	(For USB Rec.)
TH-P50XT50D/G/K/M/P/S/V	None	None		Yes	Yes
TH-P50XT50A	Yes	Yes		Yes	Yes

5.2.USB HDD Recording (A only)

5.2.1.General information:

Digital TV programmes can be recorded in USB HDD.

A One-to-One key generated in A-board by SELF CHECK binds TV and USB-HDD for communication. That key is only one key for them. If the key is difference, TV can not access USB-HDD.

Caution:

New key will be generated by following SELF CHECK and previous TV programmes recorded in USB HDD will not be viewed.

SELF CHECK: While pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.

5.3.Panel-Type setting

Panel-Type setting is required after exchange the A-board.

A-board for spare parts is common use for different inch size in same series.

Go into Service Mode and confirm/select Panel-Type in OPTION to correct inch size.

10

6 Service Mode

6.1.How to enter into Service Mode

6.1.1.Purpose

After exchange parts, check and adjust the contents of adjustment mode.

While pressing [VOLUME ( - )] button of the main unit, press [i] button of the remote control three times within 2 seconds.

Note:

Service Mode can not be entered when 3D signal input. Input 2D signal to enter Service Mode.

6.1.2.Key command

[1]button...Main items Selection in forward direction

[2]button...Main items Selection in reverse direction

[3]button...Sub items Selection in forward direction

[4]button...Sub items Selection in reverse direction [RED] button...All Sub items Selection in reverse direction

[GREEN] button...All Sub items Selection in forward direction

[VOL] button...Value of sub items change in forward direction ( + ), in reverse direction ( - )

6.1.3.How to exit

Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.

11

6.1.4.Contents of adjustment mode

•Value is shown as a hexadecimal number.

•Preset value differs depending on models.

•After entering the adjustment mode, take note of the value in each item before starting adjustment.

Main item	Sub item	Sample Data	Remark
ADJUST	CONTRAST	000
	COLOR	36
	TINT	00
	SUB-BRT	800
	H-POS	0
	H-AMP	0
	V-POS	0
	V-AMP	0
WB-ADJ	R-CUT	80
	G-CUT	80
	B-CUT	80
	R-DRV	F8
	G-DRV	FF
	B-DRV	D1
	ALL-CUT	80
	ALL-DRV	FF
OPTION	Panel-Type	50HD	Factory Preset
	Boot	ROM
	STBY-SET	00
	EMERGENCY	ON
	CLK MODE	00
	CLOCK	000
	Y/C Delay
	OPT 1	10110000
	OPT 2	00100010
	OPT 3	00000001
	OPT 4	00010000
	EDID-CLK	MID
	MIRROR	00 (See Option-Mirror)
	AMR-SELECT	OFF
VSUS		LOW	See Vsus selection
AGING	ALL WHITE		Built-in test patterns can be
			displayed.
	MIDDLE BLUE WITH MAGENTA OUTSIDE FRAME
	MIDDLE STEP GREEN
	MIDDLE STEP RED
	LOW STEP WHITE
	ALL BLUE
	ALL GREEN
	ALL RED
	WHITE DIAGONAL STRIPE
	RED DIAGONAL STRIPE
	GREEN DIAGONAL STRIPE
	BLUE DIAGONAL STRIPE
	A-ZONE & B-ZONE
	1% WINDOW
	COLOR BAR
	9 POINTS BRIGHT MEASURE
	2 DOT OUTSIDE FRAME
	DOUBLE FIXED 1% WINDOW
	VERTICAL LINE SCROLL
	ON/OFF
	R/G/B/W ROTATION WITH COUNT DISPLAY
	HALF FIXED ALL WHITE
	ALL WHITE WITH COUNT DISPLAY
SRV-TOOL		00	See Service tool mode
DRV CHECK	USBHDD CHECK	00	See DRV Check-USBHDD Check

12

6.2.Option - Mirror

Picture can be reversed left and right or up and down. 00 : Default (Normal picture is displayed)

01 : Picture is reversed left and right.

02 : Picture is reversed up and down.

Hint : If the defective symptom (e.g. Vertical bar or Horizontal bar) is moved by selection of this mirror, the possible cause is in A-board.

6.3.Service tool mode

6.3.1.How to access

1.Select [SRV-TOOL] in Service Mode.

2.Press [OK] button on the remote control.

6.3.2.Display of SOS History

SOS History (Number of LED blinking) indication.

From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment. This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory shipment setting].

6.3.3.POWER ON TIME/COUNT

Note : To display TIME/COUNT menu, highlight position, then press MUTE for 3 sec.

Time : Cumulative power on time, indicated hour : minute by decimal

Count : Number of ON times by decimal

Note : This indication will not be cleared by either of the self-checks or any other command.

6.3.4.Exit

1. Disconnect the AC cord from wall outlet.

13

6.4.DRV Check - USBHDD Check

1.Select [DRV Check - USBHDD Check] in Service Mode.

2.Press [OK] button on the remote control for more than 3 seconds.

6.5.Hotel mode

1.Purpose

Restrict a function for hotels.

2.Access command to the Hotel mode setup menu In order to display the Hotel mode setup menu:

While pressing [VOLUME (-)] button of the main unit, press [AV] button of the remote control three times within 2 seconds.

Then, the Hotel mode setup menu is displayed.

3.To exit the Hotel mode setup menu Disconnect AC power cord from wall outlet.

4.Explain the Hotel mode setup menu

Item	Function
Hotel Mode	Select hotel mode On/Off
Initial INPUT	Select input signal modes.
	Set the input, when each time power is switched
	on.
	Selection :
	Off,Analogue TV,Digital TV,AV1,AV2,PC,HDMI1,
	HDMI2
	• Off: give priority to a last memory.
Initial POS	Select programme number.
	Selection :
	Off/0 to 99
	• Off: give priority to a last memory
Initial VOL Level	Adjust the volume when each time power is
	switched on.
	Selection/Range :
	Off/0 to 100
	• Off: give priority to a last memory
Maximum VOL	Adjust maximum volume.
Level	Range :
	0 to 100
Button Lock	Select local key conditions.
	Selection :
	Off/SETUP/MENU/ALL
	• Off: altogether valid
	• SETUP: only F-key is invalid
	(Tuning guide (menu) can not be selected.)
	• MENU: only F-key is invalid
	(only Volume/Mute can be selected.)
	• ALL: altogether invalid.
Remote Lock	Select remote control key conditions.
	Selection :
	Off/SETUP/MENU
	• Off: altogether valid
	• SETUP: only Setup menu is invalid
	• MENU: Picture/Sound/Setup menu are invalid
Private Information	Select private information for VIERA Cast is Keep
	or Reset if Hotel mode is set to [On] when TV
	power on.
	Selection :
	Keep/Reset
	• Keep: private information for VIERA Cast is
	keep
	• Reset: private information for VIERA Cast is
	reset

14

6.6.Data Copy by SD Card

6.6.1.Purpose

(a)Board replacement (Copy the data when exchanging A-board):

When exchanging A-board, the data in original A-board can be copied to SD card and then copy to new A-board.

(b)Hotel (Copy the data when installing a number of units in hotel or any facility):

When installing a number of units in hotel or any facility, the data in master TV can be copied to SD card and then copy to other TVs.

6.6.2.Preparation

Make pwd file as startup file for (a) or (b) in a empty SD card.

1.Insert a empty SD card to your PC.

2.Right-click a blank area in a SD card window, point to New, and then click text document. A new file is created by default (New Text Document.txt).

3.Right-click the new text document that you just created and select rename, and then change the name and extension of the file to the following file name for (a) or (b) and press ENTER.

File name:

(a)For Board replacement : boardreplace.pwd

(b)For Hotel : hotel.pwd

Note:

Please make only one file to prevent the operation error.

No any other file should not be in SD card.

15

6.6.3.Data copy from TV set to SD Card

1.Turn on the TV set.

2.Insert SD card with a startup file (pwd file) to SD slot.

On-screen Display will be appeared according to the startup file automatically.

3.Input a following password for (a) or (b) by using remote control.

(a)For Board replacement : 2770

(b)For Hotel : 4850

Data will be copied from TV set to SD card.

It takes around 2 to 6 minutes maximum for copying.

4.After the completion of copying to SD card, remove SD card from TV set.

5.Turn off the TV set.

Note:

Following new folder will be created in SD card for data from TV set.

(a)For Board replacement : user_setup

(b)For Hotel : hotel

16

6.6.4.Data copy from SD Card to TV set

1.Turn on the TV set.

2.Insert SD card with Data to SD slot.

On-screen Display will be appeared according to the Data folder automatically.

3.Input a following password for (a) or (b) by using remote control.

(a)For Board replacement : 2771

(b)For Hotel : 4851

Data will be copied from SD card to TV set.

4.After the completion of copying to SD card, remove SD card from TV set.

(a)For Board replacement : Data will be deleted after copying (Limited one copy).

(b)For Hotel : Data will not be deleted and can be used for other TVs.

5.Turn off the TV set.

Note:

1.Depending on the failure of boards, function of Data copy for board replacement does not work.

2.This function can be effective among the same model numbers.

17

7 Troubleshooting Guide

Use the self-check function to test the unit.

1.Checking the IIC bus lines

2.Power LED Blinking timing

7.1.Check of the IIC bus lines

7.1.1.How to access

7.1.1.1.Self-check indication only:

Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.

7.1.1.2.Self-check indication and forced to factory shipment setting:

Caution:

New key will be generated and previous TV programmes recorded in USB HDD will not be viewed. (See USB HDD Recording) (A only)

Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.

7.1.2.Screen display

7.1.3.Check Point

Confirm the following parts if NG was displayed.

DISPLAY	Check Ref. No.	Description	Check Point
TUN	TU6705	TUNER	A-BOARD
STBY	IC8000	PEAKS-LD4(STM)	A-BOARD
MEM1	IC8902	PEAKS EEPROM	A-BOARD
MEM2	IC8900	NAND FLASH	A-BOARD
PANEL	IC9300	PD6H	A-BOARD
TEMP	IC2001	TEMP SENSOR	A-BOARD
LAN	IC8650	ETHERPHY	A-BOARD
ID		ID	A-BOARD
ID2		ID2	A-BOARD
BT	IC8000, A50	BLUETOOTH	A-BOARD/BLUETOOTH

7.1.4.Exit

Disconnect the AC cord from wall outlet or switch off the power with [ Power ] button on the main unit.

18

7.2.Power LED Blinking timing chart

1.Subject

Information of LED Flashing timing chart.

2.Contents

When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.

Blinking Times	Contents	Check point
1	Panel information SOS	-
	PD Start SOS
2	P+15V SOS	A-Board
		PSS-Board
3	IROM BOOT PROGRAM SOS	A-Board
		PSS-Board
4	Power SOS	PSS-Board
6	Driver SOS1	SN-Board
	(SN/PSS Energy recovery circuit)	PSS-Board
	(A-SN FPC DET)	A-SN FPC
7	Driver SOS2	SN-Board
	(SN Connector DET)
	(SN Scan and Logic IC)
8	Driver SOS3	PSS-Board
	(PSS FPC DET)	PSS FPC
9	Discharge Control SOS	A-Board
10	Sub 3.3V SOS	A-Board
	Tuner power SOS	SN-Board
	BE SOS	PSS-Board
12	Sound SOS	A-Board
		Speaker
13	Emergency SOS	A-Board
20	2nd BOOT PROGRAM SOS	A-Board
	(Watchdog timer over flow)
21	2nd BOOT PROGRAM SOS	A-Board
	(System error)
22	2nd BOOT PROGRAM SOS	A-Board
	(Main system bus freeze)
23	2nd BOOT PROGRAM SOS	A-Board
	(Accidental interrupt signal)
24	2nd BOOT PROGRAM SOS	A-Board
	(NAND Flash memory data transfer error finish)
25	2nd BOOT PROGRAM SOS	A-Board
	(Unsupported NAND Flash memory)

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7.3.No Power

First check point

There are following 2 states of No Power indication by power LED.

1.No lit

2.Green is lit then turns red blinking a few seconds later. (See Power LED Blinking timing chart)

3.Only red is lit.

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7.4.No Picture

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7.5.Local screen failure

Plasma display may have local area failure on the screen. Fig-1 is the possible defect P.C.B. for each local area.

Fig-1

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8 Disassembly and Assembly Instructions

8.1.Disassembly Flow Chart for the Unit

This is a disassembly chart.

When assembling, perform this chart conversely.

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8.2.Disassembly Procedure for the Unit

8.2.1. Remove the Pedestal stand

8.2.4. Remove the Bluetooth module

1.Remove the Plasma panel section from the servicing stand and lay on a flat surface such as a table (covered by a soft cloth) with the Plasma panel surface facing downward.

2.Remove the screws (×4 ).

3.Slide the Pedestal stand to the downside and remove the Pedestal stand.

1.Remove the screw (×1 ) and remove the Bluetooth module.

8.2.2.Remove the Stand bracket cover

1.Remove the screws (×4 ) and remove the Stand bracket cover.

8.2.3.Remove the AC cord clamper B

1.Remove the screws (×2 ) and remove the AC cord clamper B.

8.2.5.Remove the Rear cover

1.Remove the screws (×22 , ×6 , ×2 ).

2.Remove the M8 caps (×4 ).

3.Remove the Rear cover.

8.2.6.Remove the Key button

1.Remove the screws (×2 ).

2.Remove the Key button.

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8.2.7. Remove the PSS-Board

8.2.9. Remove the Speakers

Caution:

To remove P.C.B. wait 1 minute after power was off for discharge from electrolysis capacitors.

1.Disconnect the connectors (P2 and P35).

2.Disconnect the bridge connector (A6-P6).

3.Disconnect the flexible cables (SS52 and SS55).

4.Remove the screws (×5 , ×1 , ×1 ) and remove the PSS-Board.

1.Unlock the cable clampers and the tapes to free the cables.

2.Disconnect the Speaker terminal.

3.Remove the screws (×2 each) and remove the Speakers (L, R).

8.2.10. Remove the SN-Board

1. Remove the flexible cables (SN21, SN22, SN23, SN24, SN25, AN26, SN27 and SN28) connected to the SNBoard.

2. Disconnect the connector (SN2).

3. Disconnect the flexible cable (SN20).

4. Remove the screws (×5 ) and remove the SN-Board.

8.2.8.Remove the A-Board

1.Unlock the cable clampers and the tapes to free the cables.

2.Disconnect the connectors (A1, A12 and A50).

3.Disconnect the bridge connector (A6-P6).

4.Disconnect the flexible cables (A20 and A30).

5.Remove the screws (×4 ) and remove the Side shield metal.

6.Remove the A-Board.

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8.2.11. Remove the BT connector clamper 8.2.13. Remove the M8 nut metals

1.Unlock the cable clampers and the tapes to free the cables.

2.Remove the claws (×2 ) and remove the BT cable.

3.Disconnect the connector (K1) and remove the A1-K1 cable.

4.Remove the claws (×2 ) and remove the BT connector clamper.

1.Remove the screw (×1 each) and remove the M8 nut metals.

8.2.14. Remove the K-Board

1. Remove the screw (×1 ).

2. Disconnect the connector (K1) and remove the K-Board from the LED panel.

8.2.12. Remove the Stand bracket plate

1.Remove the Hanger metals (L, R) fastening screws (×6 , ×2 ) and remove the Stand bracket plate.

8.2.15. Remove the Cabinet assy from the Plasma panel section.

1.Place the Cabinet assy on a flat surface of a table (covered by a soft cloth) and a cushion.

2. Remove the screws (×3 ).

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3. Remove the Cabinet assy from the Plasma panel section.

8.2.16. Remove the Contact metal bottom

1.Remove the screws (×8 ) and remove the Contact metal bottom.

8.2.17. Remove the C1-Board

1.Disconnect the flexible cables (CB1, CB2, CB3 and CB4).

2.Disconnect the flexible cable (C10).

3.Remove the screws (×4 ) and remove the C1-Board.

8.2.18. Remove the C2-Board

1.Disconnect the flexible cables (CB5, CB6, CB7 and CB8).

2.Disconnect the flexible cables (C20 and C21).

3.Disconnect the connector (C25).

4.Remove the screws (×4 ) and remove the C2-Board.

8.2.19. Replace the Plasma panel

Caution:

Place the Plasma panel on a flat surface of a table (covered by a soft cloth) and a cushion.

A new Plasma panel itself without Contact metals is fragile. To avoid the damage to new Plasma panel, carry a new Plasma panel taking hold of the Contact metal bottom.

1.Place a carton box packed a new Plasma panel on the flat surface of the work bench.

2.Open a box and without taking a new Plasma panel.

3.Attach the Cabinet assy and each P.C.Board and so on, to the new Plasma panel.

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9 Measurements and Adjustments

9.1.Adjustment

9.1.1.Vsus selection

Caution:

When Plasma panel or A-board is replaced, Vsus should be set to LOW or HIGH.

Procedure

1.Go into main item [VSUS] in Service Mode. LOW or HIGH will be displayed.

2.Press [OK] button to go to TEST stage.

White pattern without On-Screen Display will be displayed during TEST and CONF stage. Press [5] button to display the On-Screen Display.

3.Press [VOL (-)] button to set to LOW.

4.In LOW setting

a.If no several dead pixel is visible remarkably in white pattern, press [3] button to go to CONF stage.

b.If the several dead pixels are visible remarkably in white pattern, Set to HIGH by press [VOL (+)] button. Press [3] button to go to CONF stage if the symptom is improved.

5.Press [OK] button in CONF stage to store LOW or HIGH.

6.Exit Service Mode by pressing [Power] button.

Notes:

Do not overwrite because data is written in Peaks-EEPROM after executing adjustment of V-SUS Voltage.

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