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Hitachi 43FDX01B Service Manual - Page 22

EN 22, LGE PDP 2K6

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EN 22 5. LGE PDP 2K6 Service Modes, Error Codes, and Fault Finding - Test Point: Output TP of GND-TCP - Wave format: As shown in figure below. In case of normal wave output, when STB signal is generated, the output must maintain "HIGH". When STB signal is generated again, the output must fall to "LOW". But when the TCP IC is damaged, the STB signal is not generated, and the output falls to "LOW". 2. In case of IC damage, the screen may show no image on the corresponding part, or mis-discharge. In most cases you can see a burn mark on the IC. - Test Point: Output TP of GND-TCP - Wave format: No output wave. Figure 5-38 SCAN IC defective G_16390_052.eps 150806 115V ~‹Œ•G›ŒGw 7us 60V i™Œˆ’G›ŒGzjhuGwœ“šŒ k G•G G– zjhuGwœ“šŒ F_15590_031.eps 040705 Figure 5-39 SCAN IC shorted output p›'šG–œ›G–G–™‹Œ™G–œ›—œ› p•GŠˆšŒG–G•–™”ˆ“G SG›G”ˆ Gš–žG ˆšGˆG‹–››Œ‹G“•Œ F_15590_033.eps 060605 Figure 5-41 COF IC output defective G_16390_053.eps 150806 Figure 5-40 SCAN IC normal output wave TCPs 1. In case of shorting or opening of TCP IC output, the screen may show one or several vertical lines. F_15590_034.eps 060605 Figure 5-42 TCP normal output Crystal (CTRL board: X1) 1. When a crystal is damaged, the screen is not shown. - Test Point: 3-pin of GND-Crystal (CTRL board: X1). - Wave format: Output wave is not generated. 2. In case of unusual start-up of the crystal, the screen may blink. - Wave format: As shown in figure below. - Measurement position: Measuring output 3-pin of crystal (CTRL board: X1).

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