VIEWSONIC VPW500 Schematic

Service Manual

PLASMA DISPLAY

VPW500

CONTENTS

1. SAFETY INFORMATION....................................2

2. EXPLODED VIEWS AND PARTS LIST .............6

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

.......................................................18

4. ADJUSTMENT.................................................. 46

ViewSonic Corporation 381 Brea Canyon Road Walnut , CA 91789 , U.S.A.

5. GENERAL INFORMATION ..............................60

5.1 DIAGNOSIS................................................60

6. PANEL FACILITIES AND SPECIFICATIONS

5.1.1 DIAGNOSIS METHOD...................... 60

5.1.2 DISASSEMBLY .................................70

5.1.3 WIRING ............................................. 72

.......................................................76

VPW500

1. SAFETY INFORMATION

This service manual is intended for qualified service technicians; it is not meant for the casual
do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been
trained to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely, you
should not risk trying to do so and refer the repair to a qualified service technician.

WARNING
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to
cause cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 – Proposition 65

NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts
must be of identical designation.

REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les
pièces de remplacement doivent avoir la même désignation.

1.1 SAFETY PRECAUTIONS

NOTICE : Comply with all cautions and safety related notes located
on or inside the cabinet and on the chassis.
The following precautions should be observed :

1. When service is required, even though the PDP UNIT an isolation
transformer should be inserted between the power line and the
set in safety before any service is performed.

2. When replacing a chassis in the set, all the protective devices
must be put back in place, such as barriers, nonmetallic knobs,
adjustment and compartment covershields, isolation resistor­capacitor, etc.

3. When service is required, observe the original lead dress. Extra
precaution should be taken to assure correct lead dress in the
high voltage circuitry area.

4. Always use the manufacture's replacement components.
Especially critical components as indicated on the circuit diagram
should not be replaced by other manufacture's.
Furthermore where a short circuit has occurred, replace those
components that indicate evidence of overheating.

5. Before returning a serviced set to the customer, the service
technician must thoroughly test the unit to be certain that it is
completely safe to operate without danger of electrical shock,
and be sure that no protective device built into the set by the
manufacture has become defective, or inadvertently defeated
during servicing. Therefore, the following checks should be
performed for the continued protection of the customer and
service technician.

6. Perform the following precautions against unwanted radiation
and rise in internal temperature.

• Always return the internal wiring to the original styling.

• Attach parts (Ground, Rear Cover, Shield Case) surely after

disassembly.

7. Perform the following precautions for the PDP panel.

• When the front case is removed, make sure nothing hits the
panel face, panel corner, and panel edge (so that the glass does
not break).

• Make sure that the panel vent does not break. (Check that the
cover is attached.)

• Handle the FPC connected to the panel carefully.
Twisting or pulling the FPC when connecting it to the connector
will cause it to peel off from the panel.

8. Pay attention to the following.

• Be sure to wire the fan. If the fan does not work, the temperature
will rise and cause the protection circuit to operate.

• When the front case is removed, infrared ray is radiated and
may disturb reception of the remote control unit.

• Pay extreme caution when the front case and rear panel are
removed because this may cause a high risk of disturbance to
TVs and radios in the surrounding.

Leakage Current Cold Check

With the AC plug removed from an AC power source, place a
jumper across the two plug prongs. Turn the AC power switch on.
Using an insulation tester (DC 500V), connect one lead to the
jumpered AC plug and touch the other lead to each exposed metal
part (input/output terminals, screwheads, metal overlays, control
shafts, etc.), particularly any exposed metal part having a return
path to the chassis. Exposed metal parts having a return path to the
chassis should have a minimum resistor reading of 0.3MΩ and a
maximum resistor reading of 5MΩ. Any resistor value below or
above this range indicates an abnormality which requires corrective
action. Exposed metal parts not having a return path to the chassis
will indicate an open circuit.

2

VPW500

Leakage Current Hot Check

Plug the AC line cord directly into an AC power source (do not use
an isolation transformer for this check).
Turn the AC power switch on.
Using a "Leakage Current Tester (Simpson Model 229 equivalent)",
measure for current from all exposed metal parts of the cabinet
(input/output terminals, screwheads, metal overlays, control shaft,
etc.), particularly any exposed metal part having a return path to the
chassis, to a known earth ground (water pipe, conduit, etc.). Any
current measured must not exceed 0.5mA.

Reading should
not be above

0.5 mA

Earth ground

Device
under
test

Also test with plug
reversed
(Using AC adapter
plug as required)

Leakage

current

tester

Test all exposed
metal surfaces

AC Leakage Test

1.2 PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in PIONEER set have special
safety related characteristics. These are often not evident from
visual inspection nor the protection afforded by them necessarily
can be obtained by using replacement components rated for higher
voltage, wattage, etc. Replacement parts which have these special
safety characteristics are identified in this Service Manual.
Electrical components having such features are identified by marking
with a
Manual.
The use of a substitute replacement component which dose not have
the same safety characteristics as the PIONEER recommended
replacement one, shown in the parts list in this Service Manual, may
create shock, fire or other hazards.
Product Safety is continuously under review and new instructions
are issued from time to time. For the latest information, always
consult the current PIONEER Service Manual. A subscription to, or
additional copies of, PIONEER Service Manual may be obtained at
a nominal charge from PIONEER.

on the schematics and on the parts list in this Service

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE SET TO THE CUSTOMER.

3

VPW500

1.3 CHARGED SECTION AND HIGH VOLTAGE GENERATING POINT

7 Charged Section

The places where the commercial AC power is used without
passing through the power supply transformer.
If the places are touched, there is a risk of electric shock. In addition,
the measuring equipment can be damaged if it is connected to the
GND of the charged section and the GND of the non-charged
section while connecting the set directly to the commercial AC
power supply. Therefore, be sure to connect the set via an insulated
transformer and supply the current.

7 Charged Section

(Power supply primary side)

1. AC Power Cord

2. AC Inlet with Filter

3. Power Switch (S1)

4. Fuse (In the MAIN POWER ASSY)

5. STB Transformer and Converter Transformer
(In the MAIN POWER ASSY)

6. Other primary side of the MAIN POWER ASSY

X CABLE U ASSY

CABLE ASSY

X DRIVE ASSY

X CABLE D ASSY

SIDE SW ASSY

7 High Voltage Generating Point

The places where voltage is 100V or more except for the charged
places described above. If the places are touched, there is a risk of
electric shock.

1. POWER SUPPLY MODULE (170V)

2. X DRIVE ASSY (170V)

3. Y DRIVE ASSY (–200V to 250V)

4. SCAN ASSY (250V)

For the places, refer to the EXPLODED VIEWS, the SCHEMATIC
DIAGRAM and the PCB CONNECTION DIAGRAM sections.

Part is charged section.
Part is the high voltage generating points other than the

charged section.

U-COM ASSY

CABLE ASSY

DIGIT AL VIDEO ASSY

MAIN POWER ASSY

TOP

IR RECEIVE ASSY

CABLE ASSY

CONTROL ASSY

AUDIO AMP ASSY

4

CABLE ASSY

VIDEO ASSY

CABLE ASSY

INPUT ASSY

CABLE ASSY

SP TERMINAL (L) ASSY

CABLE ASSY

CABLE ASSY

SCAN ASSY

Y DRIVE ASSY

VPW500

5

VPW500

2. EXPLODED VIEWS AND PARTS LIST

NOTES : Parts marked by “ NSP ” are generally unavailable because they are not in our Master Spare Parts List.

The mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
Screw adjacent to mark on the product are used for disassembly.

2.1 PACKING

10

15

11

8

7

26

45

5

4

9

12

6

13

3

28

1

36

32

37

27

29

30

23

24

25

31

39

38

2

34

33

30

11

6

÷

PACKING PARTS LIST

Mark No. Description Part No.

VPW500

Mark No. Description Part No.

NSP 1 Under Pad R AHA2239
NSP 2 Under Pad L AHA2240
NSP 3 Upper Pad R AHA2241
NSP 4 Upper Pad L AHA2242
NSP 5 Upper Pad C AHA2243

NSP 6 Under Pad C AHA2245

7 Front Carton AHB1210
8 Rear Carton AHB1211
9 Code Case AHC1033

10 Upper Carton AHD3089

11 Under Carton AHD3037
12 Mirror Mat AHG1284
13 Polyethirene Sheet AHG1302
14 • • • • •
15 User Guide ARD1040

(English/French/Japanese)
16 • • • • •
17 • • • • •
18 • • • • •
19 • • • • •
20 • • • • •

21 • • • • •
22 • • • • •
23 Remote Control Unit AXD1462
24 Battery Cover AZN2098

NSP 25 AA (R6/UM-3) Batteries AEX1025

26 Power Cord ADG1178

27 Binder Assy AEC1758

28 Cleaning Cloth AED1197
NSP 29 Vinyl Bag (for Screw, Nut) AHG-064
NSP 30 Vinyl Bag AHG1310

31 Pin/BNC Conversion Adaptor AKX1052

32 Diaplay Stand AMR3247
NSP 33 Stand Bracket ANG2351

34 Screw CPZ30P080FZK

35 • • • • •

36 Remote Control Unit Case AMR3231

37 Hex Hole Bolt (M8×40) SMZ80H400FZB

38 Washer (Large) WAX1F200K320

39 Washer (Small) WB80FZB

40 • • • • •

41 • • • • •
NSP 42 • • • • •

43 Pad Set AHA2269

44 • • • • •

45 RGB Cable (D-SUB 15Pin) ADF1014

Pad set (AHA2269) is composed of the following parts.

43 Pad Set AHA2269

1 Under Pad R AHA2239
2 Under Pad L AHA2240
3 Upper Pad R AHA2241
4 Upper Pad L AHA2242
5 Upper Pad C AHA2243

6 Under Pad C AHA2245

7

VPW500

2.2 REAR CASE SECTION

16

10

22

27

10

4

9

12

4

20

21

10

7

9

9

4

9

4

10

4
8

4

10

4

28

9

9

4

5

10

9

17

4

9

7

4

9

10

4

9

4

9

13

19

6

18

11

3

1

Refer to "2.3 EXTERIOR (1/3)".

24

15

14

8

÷

REAR CASE SECTION PARTS LIST

VPW500

Mark No. Description Part No.

1 Siricon Sheet L AEH1034
2 • • • • •
3 Barrier AMR3166
4 Screw BBZ40P160FZK
5 Rear Case Frame AMR3147

NSP 6 Rear Case ANE1596

7 Stand Bolt ABA1277
8 Screw Collar AEC1848
9 Screw AMZ30P100FZK

10 Hole Rivet AMR2969

11 Solder Warning Label AAX2644
12 Screw Rivet AEC1852
13 Terminal Label (VSD) AAX2841
14 Terminal Label F AAX2723
15 Terminal Label G AAX2724

16 Terminal Label (VS) AAX2839
17 Caution Label ARW1087
18 Terminal Label C AAX2720
19 Terminal Label B AAX2719
20 Bolt Caution Label AAX2727

21 Cleaning Label AAX2751

NSP 22 Name Label AAL2340

23 • • • • •

NSP 24 Earth Label BAX1014

25 • • • • •

Mark No. Description Part No.

26 • • • • •
NSP 27 UPC Label AAX2837

28 Barrier Caution Label AAX2759

29 • • • • •

30 • • • • •

31 • • • • •

32 • • • • •

33 • • • • •

34 Rear Case Service Assy AWL1461

Note) Rear Case Service Assy is composed of the following parts.

34 Rear Case Service Assy AWL1461

3 Barrier AMR3166

NSP 6 Rear Case ANE1596

11 Solder Warning Label AAX2644

28 Barrier Caution Label AAX2759

9

VPW500

2.3 EXTERIOR (1/3)

23

34

20

40

33

24

34

34

37

39

38

35

22

36

34

13

34

1
20

8

19

7

15

14

15

34

18

34
17

13

2

44

45

24

3

13

34

11

21

Refer to "2.4 EXTERIOR (2/3)".

43

41

42

41

Refer to "2.6 FRONT CASE SECTION".

41

21

12

32

21

31

32

32

21

34

30

27

10

31

9

32

14

13

20

30

27

10

÷

EXTERIOR (1/3) SECTION PARTS LIST

VPW500

Mark No. Description Part No.

1 MAIN POWER ASSY AWZ6506
2 Fuse (10A, FU101) AEK1071
3 VIDEO ASSY AWZ6604
4 • • • • •
5 • • • • •

6 • • • • •

NSP 7 Chassis ANA1605

8 Insulating Sheet AMR3199
9 Fan Frame A ANG2330

10 Wire Saddle AEC1745

11 INPUT ASSY AWZ6496

NSP 12 Fan Frame C ANG2393

13 Fan Motor AXM1036
14 Fan Label AAX2785
15 Locking Card Spacer AEC1736

16 • • • • •
17 SENSOR (A) ASSY AWZ6501
18 FAN CABLE (A) ASSY AWZ6502
19 FAN CABLE (B) ASSY AWZ6497
20 Screw BMZ30P060FCU

21 Screw BBZ40P160FZK
22 Spacer Screw AEF1028
23 Wire Barrier AMR3209
24 Nylon Rivet AEC1671
25 • • • • •

Mark No. Description Part No.

31 Fan Angle Cushion AED1193

32 Screw PPZ50P100FZK

33 PCB Hinge AEC1807

34 Screw AMZ30P060FMC

35 RCC CONTROL A ASSY AWZ6507

36 RCC CONTROL B ASSY AWZ6508

37 RCC CONTROL C ASSY AWZ6509

38 OTL CONTROL A ASSY AWZ6510

39 OTL CONTROL B ASSY AWZ6511

40 OTL CONTROL C ASSY AWZ6512

41 Screw BPZ30P080FZK

42 Hexagon Screw BBA1051

43 Nut ABN1033

44 Insulation Sheet S AMR3233

45 Insulation Sheet L AMR3234

26 • • • • •
27 PCB Mold AMR2115
28 • • • • •
29 • • • • •
30 Screw ABZ30P160FCU

11

VPW500

2.4 EXTERIOR (2/3)

22
18

28
20

16

23

45

24

23

33

23

23

45

15

29

13

22

21

4

38

26

4

5

26

A

12

40

23

41

13

22

22

3

2

22

1

41

14

19

37

5

19

1

31
30

32

11

23

23

12

40

22

22

21

45

A

1

39

45

23

2

Refer to "2.5 EXTERIOR (3/3)".

B

35

43

22

10

8

45

9

9

44

9

22

1

25

B

6

1

10

7

42

1

3

21

22

45

1

22

5

22

22

12

1

1

1

22

21

22

5

4

22

4

÷

EXTERIOR (2/3) SECTION PARTS LIST

VPW500

Mark No. Description Part No.

1 Frame Shield H ANK1609
2 Frame H ANG2396
3 Frame V ANG2344
4 Frame Shield V ANK1610
5 Corner Holder ANG2347

6 Ferrite Core (L1) ATX1037
7 Sub Frame R ANG2395
8 Sub Frame L ANG2419
9 Bush C AEC1740

10 Wire Saddle AEC1745

11 AC Inlet with Filter (CN1) AKP1210
12 Shield Gasket B ANK1646
13 Shield Gasket D ANK1648
14 Shield Gasket C ANK1647
15 Terminal Panel ANG2341

16 Shield Gasket E ANK1649
17 • • • • •

NSP 18 IR Holder ANG2346

19 Edging Saddle AEC1737
20 Nylon Rivet AEC1671

21 Screw ABA1292
22 Screw AMZ30P060FMC
23 Screw BMZ30P060FCU
24 Hexagon Screw BBA1051
25 Ferrite Core Holder AEC1818

Mark No. Description Part No.

NSP 31 Control Shield Case ANK1626
NSP 32 Control Shield Cover ANK1627
NSP 33 Control Shield Plate ANG2380

34 • • • • •

35 SP TERMINAL (L) ASSY AWZ6505

36 • • • • •

37 Spacer AEC1847

38 Screw AMZ30P100FZK
NSP 39 Drive Voltage Label ARW1097

40 Screw BPZ30P080FZK

41 Nut ABN1033

42 Screw PMB40P080FMC

43 Ferrite Core (L2) ATX1031

44 Binder AEC1851

45 Dust Guard AEB1362

26 FPC Cushion AEB1341
27 • • • • •
28 IR RECEIVE ASSY AWZ6498
29 Power Switch (S1) BSM1006
30 CONTROL ASSY AWZ6504

13

VPW500

2.5 EXTERIOR (3/3)

Note*: No.47 is a special screw. Please fix to an original place.

Please never use other screws.

30

13

22

23

16

28

11

22

12

30

46

23

47

11

9

22

46

41

23

11

40

47

∗

39

45

9

5

46

11

22

40

48

36

24

46

∗

17

28

14

47

41

∗

3

39

9

47

39
15

47

28

A

28

B

30

∗

47

∗

32

11

46

23

∗

38

31
19

33

9

48

24

39
45

40

4

36

11

22

46

14

23

11

22

46

23

11

22

46

23

11

22

46

23

11

22

46

23

A

B

49

(× 40)

31

42

49

23

22

÷

EXTERIOR (3/3) SECTION PARTS LIST

VPW500

Mark No. Description Part No.

1 • • • • •
2 • • • • •

NSP 3 Frame Assy ANA1646

4 SCAN (A) ASSY AWZ6518
5 SCAN (B) ASSY AWZ6519

6 • • • • •
7 • • • • •
8 • • • • •
9 PCB Spacer AMR3155

10 • • • • •

11 CABLE ASSY AWV1843
12 Y DRIVE ASSY AWV1863
13 X CABLE D ASSY AWZ6515
14 X DRIVE ASSY AWV1862
15 X CABLE U ASSY AWZ6514

16 DIGITAL VIDEO ASSY AWV1911
17 UCOM ASSY AWZ6613
18 • • • • •

NSP 19 Tube Cover AMR3036

20 • • • • •

21 • • • • •
22 Dust Guard Collar AMR3227
23 Locking Spacer AEC1794
24 Screw Grommet AEC1857
25 • • • • •

Mark No. Description Part No.

31 Plastic Rivet AMR1066

32 AUDIO AMP ASSY AWZ6503
NSP 33 PCB Spacer AEC1446

34 • • • • •

35 • • • • •

NSP 36 Hot Plate ANG2416

37 • • • • •

38 Circuit Board Spacer AEC1795

39 Screw ABZ30P160FCU

40 Screw BBZ40P120FZK

41 Screw IBZ30P250FCU
NSP 42 Plasma Panel Assy AAV1236

43 • • • • •

44 • • • • •

45 Hot Plate Barrier AMR3223

46 Screw ABA1056

47 Screw ABA1284

48 Screw ABZ30P060FCU

49 Ferrite Core (L4, L5) ATX1041

26 • • • • •
27 • • • • •

NSP 28 Circuit Board Spacer AEC1744

29 • • • • •
30 Locking Spacer AEC1796

15

VPW500

2.6 FRONT CASE SECTION

2

3

4

5

1

22

18

8

8

8

8

17

20

7
6

15

8

8

7

9

14

13

23

10

8

8

14

8

8

14

16

8

8

11

8

9

14

8

14

8

8

12

8

10

8

8

7

18

9

8

8

17

16

14

11

13

8

8

9

÷

FRONT CASE SECTION PARTS LIST

Mark No. Description Part No.

1 SIDE SW ASSY AWZ6500
2 LED Lens AAK2695
3 Control Name Plate AAK2757
4 Control Shield ANK1606
5 Control Button AAC1540

NSP 7 Panel Holder Assy ANG2386

6 Lens AAK2760

8 Screw BPZ30P080FZK
9 Panel Shield H ANK1603

10 Panel Cushion H AED1189

11 Front Cushion H AED1191
12 Protect Panel Assy AMR3163

16

15

16

21

Mark No. Description Part No.

13 Front Cushion V AED1192
14 Corner Cushion AEB1360
15 Front Case AMB2687

16 Panel Shield V ANK1604

NSP 17 Panel Holder V ANG2337

18 Panel Cushion V AED1190
19 • • • • •

NSP 20 Panel Shield VM ANK1605

21 Bird Logo Seal ARW1098
22 Screw BBZ30P080FMC
23 Corner Shield ANK1665

2.7 PDP SERVICE ASSY (AWU1032)

PDP SERVICE ASSY (AWU1032) is composed of the following parts.
Please refer to 2.4 and 2.5 for the illustrations of each part.

VPW500

Mark No. Description Part No.

2.4 EXTERIOR (2/3)

1 Frame Shield H ANK1609
2 Frame H ANG2396
3 Frame V ANG2344
4 Frame Shield V ANK1610
5 Corner Holder ANG2347

21 Screw AMZ30P080FCU
22 Screw AMZ30P060FMC
26 FPC Cushion AEB1341
37 Spacer AEC1847
38 Screw AMZ30P100FZK

NSP 39 Drive Voltage Label ARW1097

2.5 EXTERIOR (3/3)

NSP 3 Frame Assy ANA1646
NSP 19 Tube Cover AMR3036
NSP 20 Push Rivet AEC1748

23 Locking Spacer AEC1794
24 Screw Grommet AEC1857

NSP 28 Circuit Board Spacer AEC1744

30 Locking Spacer AEC1796

31 Plastic Rivet AMR1066
NSP 33 PCB Spacer AEC1446
NSP 34 Blind Sheet S AMR3202

Mark No. Description Part No.

OTHERS

Wire Saddle AEC1797
Flat Clamp AEC1858

Cable Clip AEC1859
NSP FPC (XGA2-Y) ADY1047
NSP FPC (XGA2-X) ADY1053

NSP Address Mojule (IC21–IC40) MC-16340

Screw ABA1292

PACKING

Button Bolt ABA1259

Corner Pad AHA2203

Corner Carton AHA2204

Upper Carton AHD2970

Under Carton AHD2971

Packing Sheet AHG1291

Holder Plate AHK1008

Washer WB80FZB

NSP 35 Blind Sheet L AMR3203

38 Circuit Board Spacer AEC1795

NSP 42 Plasma Panel Assy AAV1236

17

1

3

2

L

Y

S

C
P

-

E

234

VPW500

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 OVERALL BLOCK DIAGRAM

A

To Panel X-Electrode

B

To Panel X-Electrode

C

SIDE SW

ASSY

D

SUS

Psus(X)

OUT

+RST
OUT

Psus(X)

SUS
OUT

Psus(X)

IR

RECEIVE

ASSY

CABLE ASSY

Vsus

12V

5V

Sustain

Pulse Gen.

IC3405

Vsus

+ Reset Pulse

Gen.

5V

Vsus

12V

Sustain

Pulse Gen.

IC3402

X DRIVE ASSY

S1

U1

K2

K1

SUS

BLK

Isolation (PC)

Logic

RST

12V

PD

OC

Vsus

AUDIO AMP ASSY

12V

STB5V

C6

S5V

R

C1

R OUT

5V

BLK

DRV

Sig.

5V

F6

F5

VOL CONT
(Main/Sub)

13V,S5V

REM

Audio

F7

Out

LR

B2

PD, VOL

12V

VOL

C5

Combi

In Out

13V

MAIN POWER ASSY

P5

P3

P6

P4

P1

CON

D-D

PWR AMP

LR

IC4502

MUTE

DC

DET

PD

SRInSR

R

L

C4

LR

Out

CABLE ASSY

K2

HI PWR
OFF SW

PWR

E35

E18

Vsus
E17

E7

Vsus

Vadr

E12

15V

B3

12V

C2

CONTROL

Tx
Rx

ASSY

K1

Vsus

Vsus

VSUS

SW PWR

PD

Vadr

E21

E1

E22

10V

PD CONT

STB5V

5V

SDA
SCK

E24

E8

E10

Vadr

VADR

SW PWR

STB12V

E3

E19

E23

5V

E16

5V

12V

DELAYDELAY

PD

STBY

PWR

12V

5V

E2

PD

13V

REM, Tx, Rx,Vol, Mute

E15

KEY, LED

A1
A2

A3

A5

OVC

8V

-8V

14V

VCC

SW PWR

+B

PFC

Relay

FU101

P7

AC IN

E5

S5V

RST

14V

R5V

REG

DAT, CLK
SDet, FDet

U-COM ASSY

A19

Audio

A20

3/4

SDet

DAT
CLK

12V

AMP/AD/PLL

Sync
U-Com
F-DET

CLP,HV

BLK

SEL

LRLR

Audio

1/2

RGB

CABLE ASSY

K2

OC

E6

PWR

S5V

SYSTEM

CONT CPU

IC3604

A33 A35

CLK

(A), (B)

HD

IC2402

HD

HD,VD

Sync
SEL

CONT

P&P

RGB

RGB

In

OUT

IN 4

K1

OSD DAT

EEPROM

IC3601

HD

VD

CLK

Sync
Sepa

HD
VD

D18

14V

FAN

MAX

SD

SENS

A17

CLP,HV

BLK

In3/In4

R

Pr

D1

D19

D4

D12

REG

CONT

502MXE
Only

RGB

RGB

G/Y

SEL

GYB

R10V

FAN
BLK

Vadr

12V

V.ROM

Pb

IN 3

D13

RGB
DAT

IP

Process

CLP Pulse

Gen.

RGB DAT

D20 D22

Vadr

14V

FAN
DRV

E33

9V_PIC

5APLL

9V_SIG

5VBPLL

RGB

RGB

Decoder

IC1401

Y

YPbPr
HDVD

VD

HD

CS

HD,VD

A30

YCb

YPb

C

D

E

E

E

R

18

K1

K2

CABLE ASSY

K2

K1

CABLE ASSY

CABLE ASS

K2

K1

1234

5

Y

2

,

,

,

,

,











67

Notes: When ordering service parts, be sure to refer to "EXPLODED VIEWS AND PARTS LIST".

8

VPW500

CLP Pulse

RGB DAT

D20 D22

14V

R10V

EG

AN

ONT

LK

adr

9V_PIC

12V

9V_SIG

MXE

ly

V.ROM

B
B

In4

L

RGB

Decoder

IC1401

HD

B

CS

Pb

IN 3

CABLE ASSY

RGB
DAT

IP

Process

Gen.

Vadr

FAN

DRV

E33

5APLL

5VBPLL

RGB

Y

YPbPr

HDVD

K1

Aspect

Conv.

FIFO

CPU

CLP

HD,VD

D17

E26

E38

E27

-5V_IO
5V_AD

REG

A30 A31

YCbCr
YPbPr

Sync
SEL

K2

D6D13 D14

OSD

Gen

RGB
DAT

IP

Panel

CPU

5V

3.3V

REG

12V

OC

UPV

D16

PD

5V_PIC

A13

5_PLD

5V_RGB

13V, 8V, -8V

SCL, SDA

Y,C

Y, Col diff Decoder

Sync
Sepa

Y

In1/In2

YCSVD

VBS

CABLE ASSY

K2

D3

Gamma-1

ABL

Dither

OSD Add

Sequence

pattern

D11

FAN CABLE B
ASSY

FAN CABLE A

ASSY

R10V

SENS A

IC1201

V/Y

SEL

OUT

IN 1IN 2

K1

TOP ADR DAT

(64bit * RGB * 20)

Xtal

60M

RGB
DAT

Xtal

50M

Sub-Field

MEM

Conv.

* Field

20

20

XY DRV

VADR Cont

DRV

Gen.

BOTTOM ADR DAT

(64bit * RGB * 20)

Sig

DIGITAL VIDEO ASSY

FAN A

FAN

DRV B

FAN

DRV B

FAN

DRV A

SENSOR A ASSY

SENS

SDAT

SER

PARA

CONV.

CONT

3DY/Y/SY SEL

3DY Y

3D Y/C for

C

V/Y

TEMP

SENS

IC4101

NTSC

FAN B

FAN C

FAN D

Y

BW_Y

3DC

C

IC IC IC IC

VADR

RGB

RGB

RGB

CLKB CLKBCLK

ADR
U/B/

D/G

VADR

Gen.

DEF DEF DEF DEF

VADR

K2

DAT3

D5

IC IC IC IC

RGB

DAT1

(64bit)

DAT2

(64bit)

VADR

RGB

RGB

DAT0

(64bit)

(64bit)

K1

CABLE ASSY

RGB

CLK

12V

5V

3.3V

RGB

D7

Y DRIVE ASSY

D8

SI ,CLK

5V

Vsus12V

5V

D9

D10

DRV Sig.

H1

H5

PD

14V

-8V

Vsus

10V

14V

-8V

UVP
OVP

Logic

BLK

5V

12V

IC5V

CONV

Vsus

RN

VRN

OC

VFZ

D-D

BLK

OVP

D-D CONV

Vofs

Vsus
10V

Vsus

H4

- Reset
Pulse

Gen.

OFS
Pulse
Gen.

Vofs
12V

Vcp
BLK

BLK

VRN

OFS

MSK

VH

CP

Pulse Gen.

SUS

CP MSK, OFS

Vcp

5V

SUS

Pulse Gen.

Sustain
IC3702

Vcp

Sustain
IC3707

-RST

Vsus12V

OFS

SUS OUT

Y-SUS
MASK

BLK

SUS OUT

IC5V

H2

IC5V

VIDEO ASSY

Y SEL C SEL

NT
FIL

C SEL

C

K2

PAL

FIL

C

FILTER

C

502MX Only

SP(L)

L1

ASSY

K1

PALY

SEC Y

SEC

FIL

3Line Y/C

for

PAL/60PAL

V/Y

K1

CABLE ASSY CABLE ASSY

Psus(Y)

VH

Psus(Y)

VH

H3

K2

SCAN (A) ASSY

IC5V

VH

ADD

SEL

PULSE

IC5V

VH

ADD

SEL

PULSE

IC5V

VH

ADD

SEL

PULSE

IC5V

VH

ADD

SEL

PULSE

V7

IC5V

VH

ADD

SEL

PULSE

IC5V

VH

ADD

SEL

PULSE

IC5V

VH

ADD

SEL

PULSE

V14

IC5V

VH

ADD

SEL

PULSE

IC5V

VH

ADD

SEL

PULSE

Psus(Y)

IC5V

VH

ADD

SEL

PULSE

IC5V

VH

ADD

SEL

PULSE

IC5V

VH

ADD

SEL

PULSE

SCAN (B) ASSY

A

V1

V2

V3

V4

To Panel Y-Electrode

V5

B

V6

V8

V9

V10

V11

To Panel Y-Electrode

C

V12

V13

D

L OUT

5

6

7

8

19

1

VPW500

3.2 VIDEO ASSY SECTION (1/2)

To CONTROL ASSY
CN4703

A

AUDIO

INPUT1

AUDIO

INPUT2

OUTPUT

INPUT

INPUT1

C
Y

SINC

INPUT2

SINY

R
L

L

R

IC651

1
2
4
5

11
12
14
15

3R

13

FNC_1

IC102

1
2
4
5

11
12
14
15

3

13

B

MR_V_SW

FNC_2

C2

CN302

A5

L

YC_VY

YC_C

234

To VIDEO Assy (2/2)

A B

Y

C

1

3

S_DET

S2_DET

YC_VY

YC_C

S_DET

S2_DET

FSC

HBLK_CNR

5V_PIC

9V_SIG

Y/B–Y/R–Y DECODER SYNC SEPA.

45
42YC

10

51

SCL

SDA

SYNC

SCL

SDA

CLP_CNR

27

TV JUNGLE IC

IC1201

(TB1227BW)

4

IC1202

(TC74HC4538AF)

HOUT

4

HBLK Gen.

2MHz

LPF

7

MAI_SW

5V_PIC

5

Y

37

B–Y

36

R–Y

35

IC1205

10

5

Y
Y SYNC

1

RGB SYNC

3

(NJN1319M)

4

Comp

Comp

12

7

6

1569

9
10

7

1

IC1204

(BA7655AF)

6
3

2

IC1207

SHP_SW

C

D

CN3506

Y/G

Pb/B

Pr/R

HD/CS

VD

INPUT3 (RGB1)

INPUT ASSY

(AWZ6496)

CN303

2
4
6
8

10

RGB2 INRGB2 OUT

+5V_RGB

1

2
4
6
8

10

IC301
Comp

IC305

IC303
Comp

5V_RGB

IC507

(24LCS21A)

Plug & Play

ROM

SCL
VD
HD

B
G

SDA

R

VCLK

IC503
Comp

IC501

Comp

4

G1

3

B1

5

R1

24

HD1

12

VD1

7

G2

9

B2

11

R2

23

HD2

13

VD2

FNC_0

SAND CASTLE PULSE GEN.

VD

B

HD
G
R

IC506

15
12
10

2
5
7

12V

9V_SIG

9V_PIC

5V_RGB

9V

9V

5V

12V

Reg

Reg

Reg

Reg

5V

21

G

19

B

15

R

22

HD

14

VD

VIDEO SW

IC306

(BA7657F)

HBLK/VBLK/CLP added

5V_PIC

5V_PLD

+5A_PLL

+5D_PLL

5V

Reg

5V

Reg

Reg

5V

+5AD

Reg

+3.3AD

Reg

3.3V

INT_Y

INT_Cb

INT_Cr
EXT_Y

EXT_Pb

EXT_Pr
EXT_HD
EXT_VD

K1404

–5V_IO

–5V

Reg

9V_PIC

5
4
3

Multi Component Processor

11
10

RGB Matrix

IC1401

(CXA2101AQ)

9
7

RGB DECODER

8

55 56 31 43

SCL

SDA

SCP

SCP Gen.

3

K2023

K2024

VD3

K2025

HD4

HD3

7976 75

K2013

HBLK

K2026

VD4

P_ACL

K2014

80

37
39
35

VBLK

20

A13

CN3401

2

567

11

1

To POWER SUPPLY ASSY
CN306

P6

1234

5

67

8

VPW500

IN Screen K2904

NTSC 4:3 60 15.734k 40.28M Single (A) IP

PAL Wide 50 15.625k 53.63M Single (A) IP

PC

XGA (60)

B-Y_LEV

R-Y_LEV

VD_PLD

HD_PLD

IC1404

12

14

13

SEL_Vout V_STATE

G-Out
B-Out
R-Out

K2015

CLP

K2903

K2901

(VD)

(HD)

ORG 60 48.36k 32.50M Dual (A/B) Through

(CLK)

K2420

5V_PIC

AD OUT IP Process

K2418

K2422

IC104

(24LC01B)

Video Data

ROM

56

SCL

SDA

G/Y

K2004

HD_PLD

K2033

VD_PLD

K2032

K2021K2020

VD_FIL
HD_FIL

19

MMVMMV

HD/VD

NOISE GATE

PULSE Gen.

IC2004

(TC74VHC123AFT)

5V_PIC

12

4

HBLK_MAT/VBLK_MAT/CLP_MAT

HD3/VD3/HD4/VD4

FNC_2

S_DET

R-Y_LEV

B-Y_LEV

MAT_SW

FNC_0

6

5432

D/A

IC2301

(CXA1875AM)

1514

K2421

K2419

V_STATE

HD_PLD

VD_PLD

VD_FIL

HD_FIL

FNC_1

K2417

P_ACL_SW

142
110
112
102
107

106
103

HD_MASK

VD_MASK

P_ACL_SW

KU_SW

10971

INT_RINT_R

124

INT_GINT_G

133

INT_BINT_B

139

EXT_REXT_R

126

EXT_GEXT_G

136

EXT_BEXT_B

141

K2012
K2029
K2030

Sync. Sepa for Y/G

IC2002

(M52346SP)

–HS

84

4

3

+5V_PLL

AMP/AD/PLL

(CXA3506R)

1

3

143

R

G

B

Peak ACL

12V

+VS

VD_SEP

HD_SEP

88

9896103

100

Sync. Control

Sync. Select

PLD

IC2005

(PDY069)

128

131

132

+3.3AD

+5AD

IC2402

113

111

HD_PLL

CLP_AMP

CLP_AMP

HD_PLL

HD_u, VD_u

2 22,23

5V_PIC

104

11910

106

PLL_CE

ULK_PLL

HOLD_PLL

HOLD_PLL

ULK_PLL

120

114

5V_PLD

98
101
103

CLK

DATA

+3.3AD

VD

137

Reset

Sync. U-COM

IC2201

(PD2060A9)

Input Freq. Det.

R (B)
G (B)
B (B)

R (A)
G (A)
B (A)

XCLK

K2012

1_2CLK

K2012

K2012

K2012

11

8
8
8

8
8

XCLK
1_2CLK
HD

HD

VD

K2210

18
19

31

16

4

CLK

Gate

DA_0_SV

PLL_CE

K2211

K2212

DATA

CLK

K2209

K2213

K2202

K2203

XCLK

1_2CLK

K2201

K2204

A33

CN2901

8
8
8

8
8
88

A35

CN2903

HD

VD

CN2203

A2

4

S2_DET

SDA
SCL

CLP1

CLP2
HBLK
VBLK

D20

To DIGITAL VIDEO ASSY

CN3403

1

3

D22

5

7

To DIGITAL VIDEO ASSY

CN3405

3

E24

4
5
6

To U-COM ASSY

CN3612

CN2202

A1

E23

2
3
4
5
6

To U-COM ASSY

CN2202

CN2001

A3

8

D17

9
10
11

To DIGITAL VIDEO ASSY

CN3402

A

B

C

D

SCL

SDA

21

5

6

7

8

1

VC_YV

3D_Yin

3D_Cin

5V

REG.

LPF

(6.7MHz)

LPF

(6.7MHz)

LPF (6.7MHz)

IC803

Low Lum.

CNR

Clamp

Delay

250nS

3.58 BPF

D/A

IC703

(CXA1875AM)

SCL

SDA

54

4.43 BPF

21 345679

12

15

2

3

5

13

12

111214

2

1

3

14

4

1

15

13

4

14

131514

21435

IC1105

IC1103

IC1104

IC1004

Sin_C

3L_Vin

SCL

SDA

IC802

IC801

NTSC

NTSC

PAL

PAL

SECAM

SECAM_C

SINC

SECAM

3.3V

REG.

IC1101

(UPD64082GF-3BA)

IC1001

(CXD2064Q)

IS41C16256–35K

IC1106

LPF (6.7MHz)

4M DRAM

SECAM

Chroma Trap

5V

REG.

YC_C

1

4

768896

57

59

84

3D_Y

3D_C

18

5

4

83

60

8

CSI

AYI

3DRST

CLPO

ADIN

AYO

ACO

9

7

8

5

1

2

1

4

37

23 2517 26

FIN

MN

BPF

SW

VS

TRP1

TRP2

VS

BW

NP

MN

TRP0

TRP1

TRP0

TRP1

TRP2

DLSW

10

BPFSW

DLSW

TRP2

TRP2

VS/BW

NP

ACI

RSTB

5

IC1003

IC1002

1

4

8

5

5V_3D

5V_3D

AYO

ACO

5V_3L

5V_3L

3.3V_3D

3.3V_3D

5V_PIC

5V_SIG

TRP2

FSC

HBLK_CNR

CLP_CNRYC

SCL

SDA

8V

3D Y/C

3Line Y/C

MA (0:8)

MD (0:15)

To VIDEO Assy (1/2)

To VIDEO Assy (1/2)

3L_Y

3D_C

NTSC_C

PAL_C

A

B

234

VPW500

3.3 VIDEO ASSY SECTION (2/2)

A

B

C

D

22

1234

Waveforms of VIDEO ASSY

VPW500

Synchronous Signal Processing Block
(When INPUT1 NTSC RAMP signal is input)

CH1: VIDEO input

V : 1V/div H : 2msec/div

CH2: K2032 (VD_PLD), IC2005 Pin 112

V : 5V/div H : 2msec/div

CH3: K2018 (VD_u), IC2005 Pin 34

V : 5V/div H : 2msec/div

CH4: K2031 (VD_DSEL), IC2005 Pin 137

V : 3.3V/div H : 2msec/div

Synchronous Signal Processing Block
(When INPUT1 NTSC RAMP signal is input)

CH1: VIDEO input

V : 1V/div H : 100msec/div

CH2: K2033 (HD_PLD), IC2005 Pin 110

V : 5V/div H : 100msec/div

CH3: K2019 (HD_u), IC2005 Pin 32

V : 5V/div H : 100msec/div

CH4: K2029 (HD_PLL), IC2005 Pin 118

V : 3.3V/div H : 100msec/div

Synchronous Signal Processing Block 2
(INPUT4 PC siganl VESA:
1280x1024@60Hz (SXGA@60Hz)
when there is signal input [ separate H, V ]

CH1: K2026 (VD_4),

IC2005 Pin71 (VD input)
V: 5V/div H: 2msec/div

CH2: K2020 (VD_FIL), IC2005 Pin 102

V: 5V/div H: 2msec/div

CH3: K2018 (VD_u), IC2005 Pin 34

V : 5V/div H : 2msec/div

CH4: K2031 (VD_DSEL), IC2005 Pin 137

V : 3.3V/div H : 2msec/div

Synchronous Signal Processing Block
(When INPUT1 NTSC RAMP signal is input)

CH1: K2033 (HD_PLD), IC2005 Pin 110

V : 5V/div H : 10msec/div

CH2: K2029 (HD_PLL), IC2005 Pin 118

V : 3.3V/div H : 10msec/div

CH3: K2432 (DIVOUT), IC2402 Pin 103

V : 5V/div H : 10msec/div

Synchronous Signal Processing Block 2
(INPUT4 PC siganl VESA:
1280x1024@60Hz (SXGA@60Hz)
when there is signal input [ separate H, V ]

CH1: K2004

(SYNC_SEP: input Green signal),
IC2002 Pin4
V : 2V/div H : 100msec/div

CH2: K2029 (HD_PLL), IC2005 Pin 118

V : 3.3V/div H : 100msec/div

CH3: K2031 (VD_DSEL), IC2005 Pin 137

V : 3.3V/div H : 100msec/div

CH4: K2030 (HOLD_PLL), IC2005 Pin 120

V : 3.3V/div H : 100msec/div

23

VPW500

Synchronous Signal Processing Block 2
(INPUT4 PC siganl VESA:
1280x1024@60Hz (SXGA@60Hz)
when there is signal input [ separate H, V ]

CH1: K2025 (HD_4),

IC2005 Pin69 (HD input)
V : 5V/div H : 20msec/div

CH2: K2021 (HD_FIL), IC2005 Pin 107

V : 5V/div H : 20msec/div

CH3: K2019 (HD_u), IC2005 Pin 32

V : 5V/div H : 20msec/div

CH4: K2029 (HD_PLL), IC2005 Pin 118

V : 3.3V/div H : 20msec/div

YC_VY
(INPUT1 NTSC Color Bar)
CN104 Pin1
V : 20mV/div H : 20msec/div

R output
(INPUT3, 4 NTSC Color Bar Y/Cb/Cr)
IC306
V : 10mV/div H : 20msec/div

Synchronous Signal Processing Block 2
(INPUT4 PC siganl VESA:
1280x1024@60Hz (SXGA@60Hz)
when there is signal input [ separate H, V ]

CH1: K2021 (HD_FIL), IC2005 Pin 107

V : 5V/div H : 2.5msec/div

CH2: K2029 (HD_PLL), IC2005 Pin 118

V : 3.3V/div H : 2.5msec/div

CH3: K2432 (DIVOUT), IC2402 Pin 103

V : 5V/div H : 2.5msec/div

G output
(INPUT3, 4 NTSC Color Bar Y/Cb/Cr)
IC306
V : 20mV/div H : 20msec/div

B output
(INPUT3, 4 NTSC Color Bar Y/Cb/Cr)
IC306
V : 10mV/div H : 20msec/div

Y input
(INPUT1 NTSC Color Bar)
IC1201
V : 20mV/div H : 20msec/div

C input
(INPUT1 NTSC Color Bar)
IC1201
V : 20mV/div H : 20msec/div

24

VPW500

INT_Y input
(INPUT1 NTSC Color Bar)
IC1401
V : 20mV/div H : 20msec/div

INT_Cb input
(INPUT1 NTSC Color Bar)
IC1401
V : 10mV/div H : 20msec/div

R input
(INPUT1 NTSC Color Bar)
IC1701
V : 50mV/div H : 20msec/div

G input
(INPUT1 NTSC Color Bar)
IC1701
V : 50mV/div H : 20msec/div

INT_Cr input
(INPUT1 NTSC Color Bar)
IC1401
V : 10mV/div H : 20msec/div

B input
(INPUT1 NTSC Color Bar)
IC1701
V : 50mV/div H : 20msec/div

25