Hitachi 43FDX01B Service Manual - Page 5

Safety Instructions, Warnings, and Notes

EN 5

LGE PDP 2K6

2.

2.

Safety Instructions, Warnings, and Notes

Index of this chapter:

2.1

Warnings

Notes:

•

Only authorised persons should perform servicing of this

module.

•

When using/handling this unit, pay special attention to the

PDP Module: it should not be enforced into any other way

then next rules, warnings, and/or cautions.

•

"Warning"

indicates a hazard that may lead to death or

injury if the warning is ignored and the product is handled

incorrectly.

•

"Caution"

indicates a hazard that can lead to injury or

damage to property if the caution is ignored and the

product is handled incorrectly.

2.1

Warnings

1.

Do not touch the Signal and Power Connectors while this

product operates. Do not touch EMI ground part and Heat

Sink of Film Filter.

2.

Do not supply a voltage higher than specified to this

product. This may damage the product or can create

hazardous situations.

3.

Do not use this product in locations where the humidity is

extremely high, where it may be splashed with water, or

where flammable materials surround it. Do not install or

use the product in a location that does no satisfy specified

environmental conditions. This may damage the product or

can create hazardous situations.

4.

If a foreign substance (such as water, metal, or liquid) gets

inside the product, immediately turn "OFF" the power.

Continuing to use the product may cause electric shock or


5.

If the product emits smoke and abnormal smell, or makes

an abnormal sound, immediately turn "OFF" the power.

Continuing to use the product may cause electric shock or


6.

Do not (dis)connect the connector while power to the

product is "ON". It takes some time for the voltage to drop

to a sufficiently low level after the power has been turned

"OFF". Confirm that the voltage has dropped to a safe level

before (dis)connecting the connector.

7.

Do not pull out or insert the power cable from/to an outlet

with wet hands. It may cause electric shock.

8.

Do not damage or modify the power cable. It may cause

electric shock or can create hazardous situations.

9.

If the power cable is damaged, or if the connector is loose,

do not use the product, otherwise, this can lead to

hazardous situations or may cause electric shock.

10. If the power connector, or the connector of the power

cable, is dirty or dusty, wipe it with a dry cloth. Otherwise,

this can lead to hazardous situations.

11. The PDP module uses a high voltage (max. 450 V

DC

).

Keep the cautions concerning electric shock and do not

touch the device circuitry handling the PDP unit. And

because the capacitors of the device circuitry may remain

charged at the moment of Power "OFF", standing for 1

minute is required in order to touch the device circuitry.

12.

Because the PDP module emits heat from the glass panel

part and the drive circuitry, the environmental temperature

must not be over 40 deg. C. The temperature of the glass

panel part is especially high owing to heat from internal

drive circuitry. And because the PDP module is driven by

high voltage, it must avoid conductive materials.

13.

If inserting components or circuit boards in order to repair,

be sure to fix a lead line to the connector before soldering.

14. If inserting high-power resistors (metal-oxide film resistor

or metal film resistor) in order to repair, insert it 10 mm

away from a board.

15. During repairs, high voltage or high temperature

components must be put away from a lead line.

16. This is a cold chassis but you better use an isolation

transformer for safety during repairs. If repairing the

electricity source part, you MUST use the isolation

transformer.

17.

Do not place an object on the glass surface of the display.

The glass may break or be scratched.

18. This product may be damaged if it is subjected to

excessive stresses (such as excessive voltage, current, or

temperature). The absolute maximum ratings specify the

limits of these stresses.

19. The recommended operating conditions are conditions in

which the normal operation of this product is guaranteed.

All the rated values of the electrical specifications are

guaranteed within these conditions. Always use the

product within the range of the recommended operating

conditions. Otherwise, the reliability of the product may be

degraded.

20. This product has a glass display surface. Design your

system so that excessive shock and load are not applied to

the glass. Exercise care that the vent at the corner of the

glass panel is not damaged. If the glass panel or vent is

damaged, the product is inoperable.

21. Do not cover or wrap the product with a cloth or other

covering while power is supplied to the product.

22.

Before turning on power to the product, check the wiring of

the product and confirm that the supply voltage is within the

rated voltage range. If the wiring is wrong or if a voltage

outside the rated range is applied, the product may

malfunction or be damaged.

23. Do not store this product in a location where temperature

and humidity are high. This may cause the product to

malfunction. Because this product uses a discharge

phenomenon, it may take time to light (operation may be

delayed) when the product is used after it has been stored

for a long time. In this case, it is recommended to light all

cells for about 2 hours (aging).

24.

This product is made from various materials such as glass,

metal, and plastic. When discarding it, be sure to contact a

professional waste disposal operator.

25.

If faults occur due to arbitrary modification or disassembly,

LG Electronics is not responsible for function, quality or

other items.

26. Use of the product with a combination of parameters,

conditions, or logic not specified in the specifications of this

product is not guaranteed. If intending to use the product in

such a way, be sure to consult LGE in advance.

27.

Within the warranty period, general faults that occur due to

defects in components such as ICs will be rectified by LGE

without charge. However, IMAGE STICKING due to

misapplying the above provision (12), is not included in the

warranty. Repairs due to the other faults may be charged

for depending on responsibility for the faults.

28.

While assembling the PDP module into a set, use the EMI

ground part of the Film Filter for grounding, BEFORE

removing the protective film, to prevent that static electricity

can damage the TCPs or boards

Hitachi 43FDX01B Service Manual - Page 5

Safety Instructions, Warnings, and Notes - repair

Page 5 highlights

Section	Page
Content	1
1. Technical Specifications, Connections, and Chassis Overview	2
1.1 Technical Specifications PDP42X3*	2
1.1.1 General Specification	2
Table 1-1 General Specifications	2
1.1.2 Definitions	2
Figure 1-1 Definition of module position	2
Figure 1-2 Identification label	2
Figure 1-3 Voltage label (on rear side of module)	2
Figure 1-4 Part number printing (on board)	3
Figure 1-5 Part number label (on board)	3
Figure 1-6 TCP serial number (on TCP)	3
1.1.3 Chassis Overview	4
Figure 1-7 PWB location	4
2. Safety Instructions, Warnings, and Notes	5
2.1 Warnings	5
3. Directions for Use	6
4. Mechanical Instructions	7
4.1 Mechanical Overviews	7
Figure 4-1 Cable dressing	7
Table 4-1 Cable function	7
Figure 4-2 Label location on PWB’s	8
Figure 4-3 Label indication	8
Figure 4-4 Label information (1)	9
Figure 4-5 Label information (2)	9
4.2 Panel/assy removal	9
4.2.1 Power Supply Unit	9
Figure 4-6 PSU removal	9
4.2.2 Control Board	9
Figure 4-7 Control board removal	9
4.2.3 Y Sustain Board	10
Figure 4-8 Y-SUS board removal	10
4.2.4 Y Driver Board	10
Figure 4-9 Y driver board removal	10
Figure 4-10 TCP Separation	10
4.2.5 Z-Sustain board	11
Figure 4-11 Z-SUS board removal	11
Figure 4-12 FPC removal	11
4.2.6 X-board	11
Figure 4-13 X board removal 1/2	11
Figure 4-14 X board removal 2/2	11
Figure 4-15 TCP Separation	11
5. Service Modes, Error Codes, and Fault Finding	12
5.1 Quick Module Check	12
Figure 5-1 Logical judgement	12
Figure 5-2 Quick check	12
5.1.1 No Display	13
Connectors	13
Figure 5-3 Control + Y-SUS board	13
Figure 5-4 Control + Z-SUS board	13
Figure 5-5 Control + X board	13
Figure 5-6 Signal input (LVDS)	13
Exhaust Tip	13
Figure 5-7 Exhaust tip \	13
PSU (see figure “PSU trouble shooting“)	14
Figure 5-8 PSU trouble shooting	14
PSU Power Protection	14
5.1.2 Bar Defect (Vertical)	15
Connector	15
Figure 5-9 Connector check (1)	15
Figure 5-10 Connector check (2)	15
Checking the TCP	15
Figure 5-11 TCP torn	15
Figure 5-12 TCP IC broken	15
Control Board	15
Figure 5-13 Control board address flow	15
5.1.3 Line Defect (Vertical)	15
Line Open or Short	15
Figure 5-14 Single line defect	15
Line Open or Short with the Same Distance	16
Figure 5-15 Evenly repeated lines	16
5.1.4 Bar Defect (Horizontal)	16
Connector	16
Figure 5-16 Check FPC connectors	16
Figure 5-17 Check drive connectors	16
Scan IC Check	16
Figure 5-18 Scan IC output diode check	16
5.1.5 Line Defect (Horizontal)	16
FPC Check	16
Figure 5-19 Open FPC electrode / Panel electrode breakdown	16
Scan IC Check	17
Figure 5-20 Scan IC output diode check	17
5.1.6 Mis-discharge Defect	17
Figure 5-21 Mis-discharge	17
Checking Order	17
How to Check an IPM	17
Forward direction	17
Reverse direction	17
Figure 5-22 IPM check	17
5.2 Detailed Module Check	17
5.2.1 No Display	17
The Screen Does Not Display a Picture	17
Figure 5-23 Output waveforms on X, Y, and Z-boards	18
5.2.2 Display Defects	19
Half of the Screen is Not Shown	19
<TABLE>	19
Figure 5-24 Screen display “1/2 display”	19
Vertical Parts of the Screen are Missing	19
Figure 5-25 Screen display “Vertical parts missing”	19
Figure 5-26 Data TCP IC examination	19
Unusual Pattern on Display	19
Figure 5-27 Possible cases	19
Scan FPC Problem	19
Figure 5-28 Screen display “Scan FPC problem”	20
Figure 5-29 Scan IC	20
Vertical Lines with Regular Gap (Vertical Stripe Flash at Special Colour)	20
Figure 5-30 Screen display “Vertical lines with regular gap”	20
Data Copy in Vertical Direction	20
Figure 5-31 Screen display “Data copy in vertical direction”	20
One or Several Vertical Line(s) on the Screen	20
Figure 5-32 Screen display “Vertical lines”	20
One or Several Horizontal Lines on the Screen	20
Figure 5-33 Screen display “Horizontal lines”	20
Low Brightness of Displayed Picture	20
Partially Other Colour on Full White Screen or Partially Mis-Discharge on Full Black Screen.	20
Figure 5-34 Y output voltage waveform	21
No Specified Brightness at Specified Colour	21
5.2.3 Checking for Component Damage	21
Y IPM (IC 18) or Z IPM (IC 2)	21
Figure 5-35 IPM normal output	21
FET assy (Y board: HS2)	21
Figure 5-36 Set_up FET defective	21
Figure 5-37 Set_down FET defective	21
SCAN IC (Y-DRV board: IC1-10)	21
Figure 5-38 SCAN IC defective	22
Figure 5-39 SCAN IC shorted output	22
Figure 5-40 SCAN IC normal output wave	22
TCPs	22
Figure 5-41 COF IC output defective	22
Figure 5-42 TCP normal output	22
Crystal (CTRL board: X1)	22
Figure 5-43 Crystal normal output	23
Figure 5-44 Crystal defective output	23
5.3 Defect Description Form	24
Figure 5-45 Defect Description Form (DDF)	24
6. Block Diagrams, Test Point Overviews, and Waveforms	25
6.1 Block Diagram PDP Module	25
Figure 6-1 Block Diagram	25
7. Circuit Diagrams and PWB Layouts	25
8. Alignments	26
8.1 General	26
8.2 Alignments	26
8.2.1 Tools	26
8.2.2 Connection Diagram and Set-Up	26
Figure 8-1 Measuring equipment connection diagram	26
8.2.3 PSU Alignment	26
Figure 8-2 PSU Alignment	26
Vs Voltage Adjustment	26
Va Voltage Adjustment	27
8.2.4 Y-SUS Alignment	27
Figure 8-3 Y-SUS alignment	27
Condition	27
Vscan Voltage Adjustment	27
-Vy Voltage Adjustment	27
Y -SUS Set-up Voltage Waveform Adjustment	27
Figure 8-4 Trigger point Vs-DA	27
Figure 8-5 V set-up waveform	27
8.2.5 Z-SUS Alignment	28
Figure 8-6 Z-SUS alignment	28
Condition	28
Vzb (Z bias) Voltage Adjustment	28
8.2.6 Internal Test Patterns	28
Figure 8-7 P1: Connector for Internal Test Patterns	28
9. Circuit Descriptions, Abbreviation List, and IC Data Sheets	29
9.1 Introduction	29
9.2 Power Supply Unit (PSU)	29
9.2.1 Purpose	29
Figure 9-1 Power supply	29
9.2.2 Power ON and Power OFF Sequence	30
Figure 9-2 Power supply sequence	30
9.3 Control Board	30
9.3.1 Purpose	30
Figure 9-3 Control board	30
9.4 X Board	30
9.4.1 Purpose	30
Figure 9-4 X boards	30
9.5 Y Sustain Board	31
9.5.1 Purpose	31
Figure 9-5 Y Sustain board	31
9.5.2 Main Components	31
9.6 Y Drive Board	31
9.6.1 Purpose	31
Figure 9-6 Y Drive board	31
9.7 Z Sustain Board	31
9.7.1 Purpose	31
9.7.2 Main Components	31
Figure 9-7 Z Sustain Board	31
9.8 DC/DC Converter Part	32
9.8.1 Purpose	32
Figure 9-8 DC/DC Converter block diagram	32
Figure 9-9 DC/DC Converter part	32
9.9 FPC (Flexible Printed Circuit)	32
9.9.1 Purpose	32
Figure 9-10 Flexible Printed Circuit	32
9.10 FFC (Flat Flexible Cable)	32
9.10.1 Purpose	32
Figure 9-11 Flat Flexible Cable	32
9.11 TCP (Tape Carrier Package)	32
9.11.1 Purpose	32
Figure 9-12 Tape Carrier Package	32
9.12 IPM (Intelligent Power Modules)	33
9.12.1 Purpose	33
Figure 9-13 Intelligent Power Modules	33
9.12.2 Main Components	33
9.13 Abbreviation List	33
9.14 IC Data Sheets	33
10. Spare Parts List	34