15 Exploded View and Replacement Parts List----------103
15.1. Exploded View and Mechanical Replacement
Parts List--------------------------------------------------103
15.2. Electrical Replacement Parts List ------------------103
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TH-65PF20W / TH-65PF20T
1Safety Precautions
1.1.General Guidelines
1. When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials.
2. Wh en 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 the m straight
out.
4. Wh en 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. Con nect 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 U
For a. c.: U1 = 35 V (peak) and U2 = 0.35 V (peak);
For d. c.: U
Note:
The limit value of U
mA d. c.
The limit value U
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.
= 1.0 V,
1
= 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
2
= 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100 kHz.
1
and U2, does not exceed the following values:
1
Figure 1
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TH-65PF20W / TH-65PF20T
2Warning
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 incid ence 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).
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TH-65PF20W / TH-65PF20T
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 proc ess 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 st andard 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 sol der. 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.
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TH-65PF20W / TH-65PF20T
3Service Navigation
3.1.Service Hint
Board NameFunctionBoard NameFunction
ADigital Signal Processor, Microcomputer
Format Converter, Plasma AI Processor
Sub-Field Processor, Sync Processor,
Audio Processor, Speaker Out Amplifier
DS Slot Interface (Audio / Video / Sync Input Switch),
DC-DC Converter
SCScan driveV1Remote receiver, LED-G, R
SUScan out (Upper)
Non serviceable.
SU-Board should be exchanged for service.
SDScan out (Lower)
Horizontal scanning frequency 15 - 110 kHz
Vertical scanning frequency 48 - 120 Hz
RJ45 10BASE-T/100BASE-TX, compatible with PJLink
VIDEO (BNC)1.0 Vp-p (75-ohm)
AUDIO L-R (RCA Pin jack × 2)0.5 Vrms
HDMI (TYPE A Connector)
Y / G (BNC)with sync 1.0 Vp-p (75-ohm)
P
/B (BNC)0.7 Vp-p (75-ohm)
B/CB
P
/R (BNC)0.7 Vp-p (75-ohm)
R/CR
AUDIO L-R (RCA Pin jack × 2)0.5 Vrms
(Content Protection)Compatible with HDCP 1.1
AUDIO (Stereo mini jack (M3) × 1)0.5 Vrms
P
/ CB / B: 0.7 Vp-p (75-ohm)
B
P
/ CR / R: 0.7 Vp-p (75-ohm)
R
HD / VD: 1.0 - 5.0 Vp-p (high impedance)
AUDIO (Stereo mini jack (M3) × 1)0.5 Vrms
(D-sub 9 Pin)RS-232C compatible
TM
Y or G without sync 0.7 Vp-p (75-ohm)
TH-65PF20W / TH-65PF20T
9
TH-65PF20W / TH-65PF20T
5Operating Instructions
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TH-65PF20W / TH-65PF20T
Option Menu for GPF13D series
GPF13D chassis series have special function and operation setting facility called Option Menu. This Option Menu is useful
for special function required customers. This should be set at the installation stage.
Option menusdefault settingContents
Weekly Command Timer---Sets Weekly Command Timer.
Audio input select---Set up the sound when an image input is selected.
Onscreen displayOnEnable/Disable to display input mode indication after power on and no signal
indication.
Initial INPUTOffSets the initial input mode when the power is turned on. Allow input mode selec-
Initial VOL levelOffSets the initial volume level when the power is turned on. Allow Volume control
Maximum VOL LevelOffSets the maximum volume to desired level. Volume cannot exceed this level.
INPUT lockOffFixes the input mode to AV, Component/RGB or PC. Can not change input
Off-timer functionEnableOff-timer operation Enable/Disable.
Initial Power ModeNormalSets the power mode of the unit for when the power recovers from failure or
ID select0Set ID number from 0 to 100.
Remote IDOffRemote ID function On/Off.
Serial IDOffSerial ID function On/Off
Display sizeOffDisplay size function On/Off
Studio W/BOffStudio W/B function On/Off
Studio GainOffStudio Gain function On/Off
Slot powerOffSets the slot power mode while the power is turned on.
Power On Screen DelayOffYou can set the power-on delay time of the displays to reduce the power load,
Clock DisplayOffClock Display function On/Off.
All AspectDefaultAspect mode: default/All aspect mode.
Auto SetupManualSets the operational mode of the automatic position adjustment in the POS./
RotateOffRotate function On/Off
tion while power is on.
while power is on.
mode by input selection key.
down)
Off: Valid key is all key of remote.
User1: Valid key are only Stand-by (ON/OFF), Input, Direct input, Picture, Surround, Sound mute On/Off, and volume adjustment.
User2: Valid key is only Stand-by (ON/OFF).
User3: All keys are null and void
after plugging off and in again.
(While the Remote ID on, standard remote function can not control the unit.)
Allow Optional Terminal Board insert Slots while power is on.
when you press to turn on the multiple displays that are set together, for
example, on MULTI DISPLAY system.
Set each display’s setting individually.
SIZE menu.
Note:
When both main unit buttons and remote control are disabled due to the [Button lock], [Remocon User level] or [Remote ID]
adjustments, set all the values [Off] so that all the buttons are enabled again.
Press the [Volume down] button on main unit together with [R] button on the remote control and hold for more than 5 seconds.
The [SHIPPING] menu is displayed and the lock is released when it disappears.
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TH-65PF20W / TH-65PF20T
6Service Mode
6.1.CAT (Computer Aided Test) mode
To exit the CAT mode, access the ID mode and switch off the main power.
6.1.1.IIC mode
Select the IIC mode by Up/Down button on the remote control at the front page of CAT mode and then press the Action button on
the remote control.
Subject and item are mentioned on [IIC mode structure].
To exit the IIC mode, press the R button on the remote control.
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TH-65PF20W / TH-65PF20T
6.1.2.CD mode
Select the CD mode by Up/Down button on the remote control at the front page of CAT mode and then press the Mute button on
the remote control more than 3 seconds.
Memory data change
To exit the CD mode, press the R button on the remote control.
6.1.3.NW mode
Note :
To use the network function, set each [Network Setup] setting and make sure to set the [Control I/F Select] to [LAN].
Select the NW mode by Up/Down button on the remote control at the front page of CAT mode and then press the Action button
on
the remote control.
To exit the NW mode, press the R button on the remote control.
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TH-65PF20W / TH-65PF20T
6.1.4.SD mode
Select the SD mode by Up/Down button on the remote control at the front page of CA T mode and then press the Action button on
the remote control.
To exit the SD mode, press the R button on the remote control.
6.1.5.MS mode
Select the MS mode by Up/Down button on the remote control at the front page of CAT mode and then press the Mute button on
the remote control more than 3 seconds.
To exit the MS mode, press the R button on the remote control.
Caution:
Market Select should be set after exchange of A-Board.
9North America (Hotel)25-10Europe (Hotel)26-11--27-12Britain (Hotel)28Middle East/Hong Kong
13--29Middle East/Hong Kong (Hotel)
14Thailand (Hotel)30Australia
15--31Australia (Hotel)
Default setting
NumberDestination
1North America
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TH-65PF20W / TH-65PF20T
6.1.6.ID mode
Select the ID mode by Up/Down button on the remote control at the front page of CAT mode and then press the Mute button on
the remote control more than 3 seconds.
To exit the ID mode, press the R button on the remote control.
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TH-65PF20W / TH-65PF20T
6.2.IIC mode structure (following items value is sample data)
16
7Troubleshooting Guide
7.1.Self Check
7.1.1.Display Indication
1. Self-check is used to automatically check the bus line
controlled circuit of the Plasma display.
2. To get into the Self-check mode, press the volume down
button on the customer controls at the bottom of the set,
at the same time pressing the OFF-TIMER button on the
remote control, and the screen will show.
If the IIC ports have been checked and found to be incorrect
Or not located then [ - - ] will appear in place of [ OK ]
[ 01 ] in the line of the [ PTCT ] means the number of blinks of
the Power LED is 1. (Reference to 7.1.2)
[ H09 ] in the line of the [ PTCT ] is the error code.
To exit the CAT mode switch off the main power.
Note:
The line of the [ PTCT ] displays when you get into the Selfcheck mode for the first time only after the Power LED
blinks.
TH-65PF20W / TH-65PF20T
17
TH-65PF20W / TH-65PF20T
7.1.2.Power LED Blinking timing chart
1. Subject
Information of LED Blinking timing chart.
2. Contents
When an abnormality has occurred to the unit, the protection circuit operates and resets 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.
* Refer to 7.1.1 Display Indication
About blinking LED
18
7.2.No Power
First check point
There are following 3 states of No Power indication by power LED.
1. No lit.
2. Green is lit then turns red blinking a few seconds later.
3. Only red is lit.
TH-65PF20W / TH-65PF20T
7.3.No Picture
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TH-65PF20W / TH-65PF20T
7.4.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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TH-65PF20W / TH-65PF20T
8Service Fixture & Tools
8.1.SC jig
Purpose:
To find the failure board (SC or SU/SD) when the power LED is blinking 7 times.
SC jig:
Jumper connector to connect to SC50 connector on SC board
Part number:
TZSC09187
How to use:
Caution: Remove SC jig from SC board after inspection.
1. Remove all connector between SC board and SU/SD board to isolate SC board from both SU and SD board electrically.
Note: The board will be damaged if all connector is not removed (for example; remove connector only for SU board
and stay connecting with SD board. The board will be damaged.)
2. Connect SC jig to connector SC50 at left bottom side of SC board.
3. Turn on the TV/Display Unit and confirm the power LED blinking.
LED blinking: Possible cause of failure is in SC board
No LED blinking (Lighting or no lighting): Possible cause of failure is in SU or SD board
4. After inspection, turn off the TV/Display Unit and wait a few minutes to discharge.
5. Remove SC jig from SC board.
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TH-65PF20W / TH-65PF20T
9Disassembly and Assem-
bly Instructions
• To disassemble P.C .B., wait for 1 minute after power was off
for discharge from electrolysis capacitors.
•, , , and marks indicate screw positions.
9.1.Removal of Rear Cover
1. Remove screws ( ×26 , ×4 , ×18 ) and M8 Cap (×4
) and then remove the Rear Cover.
3. Remove 6 screws and then remove DS-Board.
9.4.Removal of HX-Board
1. Disconnect the connector (A14).
2. Remove 2 Hexagonal-Head screws, 5 screws ( ) an d 2
screws ( ) and then remove the HX-Board Block.
9.2.Removal of Slot Block
1. Disconnect the connectors (DS13, P9).
2. Remove the flexible cable from the connector (DS1).
3. Remove 4 screws and then remove the Slot Block.
9.3.Removal of DS-Board
1. Remove the Slot Block.
(Refer to Removal of Slot Block)
2. Turn over the Slot Block.
3. Turn over the HX-Board Block.
4. Disconnect the connector (HX1).
5. Remove 4 Hexagonal-Head screws and 1 screw of HXBoard and then remove HX-Board.