SONY KP-46WT520, KP-51WS520, KP-57WS520 Service Manual

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL

MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.

KP-46WT520

KP-51WS520

KP-57WS520

RM-Y916 US/CND/MX SCC-M37B-A

RM-Y916 US/CND/MX SCC-M37C-A

RM-Y916 US/CND/MX SCC-M37A-A

AX-1X

CHASSIS

ORIGINAL MANUAL ISSUE DATE: 7/2004

REVISION DATE REVISION TYPE SUBJECT

7/2004 No revisions or updates are applicable at this time.

COLOR REAR VIDEO PROJECTION

9-965-968-01

Self Diagnosis

Supported model

SERVICE MANUAL

MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.

KP-46WT520

KP-51WS520

KP-57WS520

RM-Y916 US/CND/MX SCC-M37B-A

RM-Y916 US/CND/MX SCC-M37C-A

RM-Y916 US/CND/MX SCC-M37A-A

AX-1X

CHASSIS

9-965-968-01

KP-51WS520 RM-Y916

COLOR REAR VIDEO PROJECTION

KP-46WT520/51WS520/57WS520

TABLE OF CONTENTS

SECTION TITLE PAGE SECTION TITLE PAGE

Specifi cations ................................................................................. 4

Warnings and Cautions .................................................................. 5

Safety Check-Out ........................................................................... 6

Self-Diagnostic Function................................................................. 7

SECTION 1: DISASSEMBLY............................................................... 10

1-1. Rear Board Removal............................................................ 10

1-2. Chassis Assembly Removal ................................................. 10

1-3. Service Position ....................................................................11

1-4. Terminal Board and P Board Removal..................................11

1-5. BM Board Board Removal ................................................... 12

1-6. A Board, D Board, and G Board Removal............................ 12

1-7. High-Voltage Cable Installation and Removal...................... 13

1-8. Picture Tube Removal .......................................................... 13

1-9. Speaker Grille, HA1 Board, and HB2 Board Removal

(KP-46WT520 Only)............................................................. 14

1-10. Speaker Grille, HA1 Board, and HB1 Board Removal

(KP-51WS520/57WS520 Only)............................................ 14

1-11. Beznet Assembly Removal .................................................. 15

1-11-1. Screen Tape Method................................................ 15

1-12. SR Board Removal .............................................................. 16

Wire Dressing....................................................................... 17

SECTION 2: SET-UP ADJUSTMENTS................................................ 31

2-1. Screen Voltage Adjustment (G2) (Coarse Adjustment)........ 31

2-2. Screen (G2) Adjustment (Fine Adjustment).......................... 31

2-3. Defl ection Yoke Tilt Adjustment............................................ 31

2-4. Focus Lens Adjustment ........................................................ 32

2-5. Focus VR Adjustment........................................................... 32

2-6. Centering Magnet Adjustment .............................................. 33

2-7. 2-Pole Magnet Adjustment .................................................. 33

2-8. 4-Pole Magnet Adjustment ................................................... 33

2-9. Defocus Adjustment (Blue)................................................... 33

2-10. Electrical Adjustments by Remote Commander................... 34

2-10-1. Method of Entering the Service Adjustment Mode .. 34

2-10-2. Memory Write Confi rmation Method ........................ 34

2-10-3. Adjusting Buttons and Indicator ............................... 34

2-11. Adjustable Service Data Lists .............................................. 35

2-11-1. ID Map Table............................................................ 49

2-12. Registration Adjustment (PJE Mode Only)........................... 50

2-12-1. Setup for Adjustment ............................................... 50

2-12-2. Main Defl ection Adjustment..................................... 50

2-12-3. Operation Method for Projector Engine Mode ......... 51

2-13. PJE Adjustment (Sub Defl ection Adjustment) ...................... 52

2-13-1. Adjustment for NTSC Full Mode .............................. 53

2-13-2. Copying All Registration Data to Other Modes ........ 55

2-14. Auto Registration Offsets ..................................................... 55

2-15. Auto Registration Error Codes ............................................. 56

2-16. Auto Registration Diagnostics .............................................. 57

SECTION 3: SAFETY-RELATED ADJUSTMENTS............................. 58

D BOARD ..................................................................................... 58

3-1. HV Regulation Circuit Check and Adjustment...................... 58

3-2. HV Hold Down Circuit Operation Check .............................. 58

G BOARD ..................................................................................... 59

3-3. +B Max Voltage Confi rmation .............................................. 59

3-4. +B OVP Confi rmation........................................................... 59

SECTION 4: CIRCUIT ADJUSTMENTS.............................................. 60

4-1. P & P Sub Contrast Adjustment (Video) (SCON)................. 60

4-2. P & P Sub Contrast Adjustment (RF) (SCON) ..................... 60

4-3. P & P Sub-Hue and Sub-Color Adjustment Video

(SHUE, SCOL) ..................................................................... 60

4-4. P & P Sub-Hue and Sub-Color Adjustment

(RF) (SHUE, SCOL)............................................................. 60

4-5. Blue Offset Adjustment......................................................... 61

SECTION 5: DIAGRAMS..................................................................... 62

5-1. Circuit Boards Location ........................................................ 62

5-2. Printed Wiring Boards and

Schematic Diagrams Information ......................................... 62

5-3. Block Diagrams .................................................................... 64

Signal Flow Block Diagram .................................................. 64

Power Block Diagram........................................................... 65

Audio Signal Path Block Diagram ........................................ 66

Video Path Block Diagram ................................................... 67

SYNC/OSD Path Block Diagram.......................................... 68

5-4. Schematics and Supporting Information ............................. 69

CR Board Schematic Diagram ............................................ 69

CB Board Schematic Diagram ............................................ 70

CG Board Schematic Diagram ............................................ 71

VM Board Schematic Diagram ............................................ 74

A Board Schematic Diagram (1 of 6).................................... 75

A Board Schematic Diagram (2 of 6).................................... 76

A Board Schematic Diagram (3 of 6).................................... 77

A Board Schematic Diagram (4 of 6).................................... 78

A Board Schematic Diagram (5 of 6).................................... 79

A Board Schematic Diagram (6 of 6).................................... 80

D Board Schematic Diagram (1 of 2) ................................... 85

D Board Schematic Diagram (2 of 2) ................................... 86

BM Board Schematic Diagram (1 of 3) ................................ 90

BM Board Schematic Diagram (2 of 3) ................................ 91

BM Board Schematic Diagram (3 of 3) ................................ 92

G Board Schematic Diagram ............................................... 94

HA1 Board Schematic Diagram .......................................... 97

P Board Schematic Diagram................................................ 98

SR Board Schematic Diagram ............................................ 99

HB1 Board Schematic Diagram

(KP-51WS520/57WS520 Only) .............................. 99

HB2 Board Schematic Diagram

(KP-46WT520 Only) ................................................ 99

5-5. Semiconductors ................................................................. 101

SECTION 6: EXPLODED VIEWS...................................................... 102

6-1. Cover (KP-46WT520 Only) ................................................ 102

6-2. Cover (KP-51WS520/57WS520 Only) ............................... 103

6-3. Chassis .............................................................................. 104

6-4. Picture Tube ....................................................................... 105

SECTION 7: ELECTRICAL PARTS LIST......................................... 106

KP-46WT520/51WS520/57WS520

3

SPECIFICATIONS

KP-46WT520

KP-51WS520

KP-57WS520

KP-46WT520/51WS520/57WS520

Power Requirements

120V AC, 60Hz

Power Consumption (W)
In Use (Max)
In Standby

Inputs/Outputs

235W
Under 1 W

HDMI IN
Video
1080i, 720p, 480p, 480i
Audio

Two channel linear PCM 32, 44.1, and 48 kHz, 16, 20, and 24 bit

Video (IN)

4 total (1 on front panel)
1Vp-p, 75ohms unbalanced, sync negative

S Video (IN)

3 total (1 on front panel)
Y: 1Vp-p, 75ohms unbalanced, sync negative
C: 0.286Vp-p (Burst signal), 75ohms

Speaker Output (W)

Audio (IN)

7 total (1 on front panel)
500 mVrms (100% modulation)
Impedance:47 kilohm

Component Video Input

2 ( Y,PB,P
Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative;
PB: 0.7 Vp-p, 75 ohms;
PR: 0.7 Vp-p, 75 ohms

Control S (IN/OUT)

1 total

Variable/Fixed Audio (OUT)

More than 408 m Vrms at the maximum volume setting
(Variable)
More than 408 m Vrms (Fixed) Impedance (output):2 kilohms

KP-46WT520

KP-51WS520

20W x 2

R)

KP-57WS520

Dimensions (W x H x D)
mm
in

1086 x 1017 x 609 mm 1194 x 1280 x 666 mm 1326 x 1377 x 692 mm
42

Mass kg

61.3 kg 77.2 kg 88 kg
135 lbs 170 lbs 194 lbs

lbs

Projection System

3 picture tubes, 3 lenses, horizontal in-line system

Picture Tube

7-inch high-brightness monochrome tubes (6.3 raster size),

with optical coupling and liquid cooling system.

Projection Lenses

High performance, large diameter hybrid lens F1.1

Antenna

75 ohm external terminal for VHF/UHF

Television System

NTSC, American TV Standard

Channel Coverage

VHF: 2-13/UHF: 14-69/CATV: 1-125

3/4

x 40 x 24 in 47 x 50

1/2

1/4

x 26

in 52

1/4

x 54

1/4

x 27

1/4

in

Screen Size (measured diagonally)

46 inches (KP-46WT520)
51 inches (KP-51WS520)
57 inches (KP-57WS520)

Supplied Accessories

Remote Control RM-Y916
Batteries (2) size AA (R6)

Optional Accessories

A/V Cable (VMC-810/820/830 HG)
Audio Cable (RKC-515HG)
Component Video Cable (VMC-10/30 HG)
Control S Cable (RK-G69HG)
TV Stand SU-46WT11 (For KP-46WT520 Only)

Design and specifi cations are subject to change without notice.

KP-46WT520/51WS520/57WS520

4

KP-46WT520/51WS520/57WS520

WARNINGS AND CAUTIONS

CAUTION

Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield, or carbon painted on the CRT, after
removing the anode.

WARNING!!

An isolation transformer should be used during any service to avoid possible shock hazard, because of live chassis. The chassis of
this receiver is directly connected to the ac power line.

! SAFETY-RELATED COMPONENT WARNING!!

Components identifi ed by shading and ! mark on the schematic diagrams, exploded views, and in the parts list are critical for safe
operation. Replace these components with Sony parts whose part numbers appear as shown in this manual or in supplements
published by Sony. Circuit adjustments that are critical for safe operation are identifi ed in this manual. Follow these procedures
whenever critical components are replaced or improper operation is suspected.

ATTENTION!!

Apres avoir deconnecte le cap de l’anode, court-circuiter l’anode du tube cathodique et celui de l’anode du cap au chassis metallique
de l’appareil, ou la couche de carbone peinte sur le tube cathodique ou au blindage du tube cathodique.

Afi n d’eviter tout risque d’electrocution provenant d’un chássis sous tension, un transformateur d’isolement doit etre utilisé lors de tout
dépannage. Le chássis de ce récepteur est directement raccordé à l’alimentation du secteur.

! ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!

Les composants identifi es par une trame et par une marque ! sur les schemas de principe, les vues explosees et les listes de pieces
sont d’une importance critique pour la securite du fonctionnement. Ne les remplacer que par des composants Sony dont le numero
de piece est indique dans le present manuel ou dans des supplements publies par Sony. Les reglages de circuit dont l’importance
est critique pour la securite du fonctionnement sont identifi es dans le present manuel. Suivre ces procedures lors de chaque
remplacement de composants critiques, ou lorsqu’un mauvais fonctionnement suspecte.

KP-46WT520/51WS520/57WS520

5

SAFETY CHECK-OUT

e

KP-46WT520/51WS520/57WS520

After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:

1. Check the area of your repair for unsoldered or poorly soldered
connections. Check the entire board surface for solder splashes and
bridges.

2. Check the interboard wiring to ensure that no wires are “pinched” or
touching high-wattage resistors.

3. Check that all control knobs, shields, covers, ground straps, and
mounting hardware have been replaced. Be absolutely certain that
you have replaced all the insulators.

4. Look for unauthorized replacement parts, particularly transistors,
that were installed during a previous repair. Point them out to the
customer and recommend their replacement.

5. Look for parts which, though functioning, show obvious signs of
deterioration. Point them out to the customer and recommend their
replacement.

6. Check the line cords for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.

7. Check the B+ and HV to see if they are specifi ed values. Make sure
your instruments are accurate; be suspicious of your HV meter if
sets always have low HV.

8. Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.

Leakage Test

The AC leakage from any exposed metal part to earth ground and from
all exposed metal parts to any exposed metal part having a return to
chassis, must not exceed 0.5 mA (500 microamperes). Leakage current
can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instructions.

2. A battery-operated AC milliammeter. The Data Precision 245 digital
multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a VOM
or battery-operated AC voltmeter. The “limit” indication is 0.75 V,
so analog meters must have an accurate low voltage scale. The
Simpson’s 250 and Sanwa SH-63TRD are examples of passive
VOMs that are suitable. Nearly all battery-operated digital multimeters
that have a 2 VAC range are suitable (see Figure A).

How to Find a Good Earth Ground

A cold-water pipe is a guaranteed earth ground; the cover-plate retaining
screw on most AC outlet boxes is also at earth ground. If the retaining
screw is to be used as your earth ground, verify that it is at ground by
measuring the resistance between it and a cold-water pipe with an
ohmmeter. The reading should be zero ohms.

If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble­light (not a neon lamp) between the hot side of the receptacle and the
retaining screw. Try both slots, if necessary, to locate the hot side on the
line; the lamp should light at normal brilliance if the screw is at ground
potential (see Figure B).

To Exposed Metal
Parts on Set

.15 µF

kΩ

1.5

Earth Ground

Figure A. Using an AC voltmeter to check AC leakage. Figure B. Checking for earth ground.

KP-46WT520/51WS520/57WS520

AC V oltmeter
(0.75 V)

Trouble Light

AC Outlet Box

Ohmmeter

Cold-water Pip

6

KP-46WT520/51WS520/57WS520

SELF-DIAGNOSTIC FUNCTION

Self Diagnosis

Supported model

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER LED will automatically begin to fl ash. The number
of times the LED fl ashes translates to a probable source of the problem. A defi nition of the STANDBY/TIMER LED fl ash indicators is listed in the
instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the Remote Commander can be used to review
the failure occurrence data stored in memory to reveal past problems and how often these problems occur.

Diagnostic Test Indicators

When an error occurs, the STANDBY/TIMER LED will fl ash a set number of times to indicate the possible cause of the problem. If there is more than
one error, the LED will identify the fi rst of the problem areas.

Results for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, no error has occurred.

No. of times

Diagnostic Item

Power does not turn on Does not light _______

+B Overcurrent (OCP)* 2 times 2:0 or 2:1

+B Overvoltage (OVP) 3 times 3:0 or 3:1

Vertical Deflection Stopped 4 times 4:0 or 4:1

White Balance Failure
(not balanced)

LOW +B OCP/OVP
(overcurrent/overvoltage)***

Horizontal Deflection
Stopped

Audio Protection 8 times 8:0 or 8:1

Zero Crossing Detector 9 times 9:0 or 9:1
HV Protection 10 times 10:0 or

STANDBY /

TIMER lamp

flashes

5 times 5:0 or 5:1

6 times 6:0 or 6:1

7 times 7:0 or 7:1

Display

Result

10:1

Probable Cause Location Detected Symptoms

• Power cord is not plugged in.

• Fuse is burned out (F6000). (G Board)

• H.OUT (Q5001) is shorted. (D Board)

• +B PWM (Q5201) is shorted.

(D Board)

• IC6503 is faulty. (D Board) • Has entered standby mode.

• 15V is not supplied. (D Board)

• IC5101 is faulty. (D Board)

• Video OUT (IC9101, IC9201, IC9301)

is faulty. (CR, CG, CB Board)

• CRT drive (IC452) is faulty.

(A Board)

• G2 is improperly adjusted.**

• +5 line is overloaded.

(A and BM Boards)

• +5 line is shorted. (A and BM Boards)

• IC303 is faulty. (A Board)

• Q5006 is broken (D Board)

• IC452 is faulty (A Board)

• + or - 22V audio supply is not

present—Check PS600 &PS601

• Audio AMP is damaged IC601 on

A Board

• D6116 or D6301 is open (G Board) • No picture

• Q8014 or Q8013 have shorted replace

along with R8051 on D Board

• IC8005 is damaged (D Board)

• Power does not come on.

• No power is supplied to the TV.

• AC Power supply is faulty.

• Power does not come on.

• Load on power line shorted.

• Has entered standby mode after

Horizontal raster.

• Vertical deflection pulse is stopped.

• Power line is shorted or power

supply is stopped.

• No raster is generated.

• CRT cathode current detection

reference pulse output is small.

• No picture

• No picture

• No picture

• No picture

* If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously. The symptom that is diagnosed first by the

microcontroller is displayed on the screen.
** Refer to Screen (G2) Adjustment (Fine Adjustments) in Section 2 of this manual.
*** If STANDBY/STEREO LED flashes six (6) times, unplug the unit and wait 10 seconds before performing the adjustment.

KP-46WT520/51WS520/57WS520

7

Display of Standby/Timer LED Flash Count

TIMER Indicator

Diagnostic items Flash count

+B Overcurrent 2 times

Low +B Overvoltage 3 times

Vert. Deflection Stopped 4 times

White Balance Failure 5 times

Low +B OCP/OVP 6 times

Horiz. Deflection Stopped 7 times

Audio Protection 8 times

Zero Crossing Detector 9 times

HV Protection 10 times

KP-46WT520/51WS520/57WS520

STAND BY Indicator

Lamp ON 0.3 sec.

Lamp OFF 0.3 sec.

Lamp OFF 3 sec.

Release of TIMER STAND BY indicator blinking

The TIMER/STANDBY indicator blinking display is released by turning OFF the power switch on the TV main unit or removing the plug from the power.

Self-Diagnosis Screen Displays

In cases of malfunctions where it is not possible to determine the symptom such as when the power goes off occasionally or when the screen
disappears occasionally, there is a screen display on whether the malfunction occurred or not in the past (and whether the detection circuit operated or
not) in order to allow confi rmation.

Screen Display Method

Quickly press the remote command button in the following order from the standby state.

*Note that this differs from entering the service mode (sound volume

Display

Channel

5

SELF DIAGNOSIS

Sound Volume*

_

Power ON

)

+

2: +B OCP 0

3: +B OVP 0

4: VSTOP 0

5: AKB 1

6: LOWB 0

7: H-STOP 0

Numeral “0”

means that no fault was detected.

Numeral “1”

means a fault was detected one
time only.

8: AUDIO 0

9: ZCD 0

10: HV PROT 0

101: WDT 24

Self-Diagnosis Screen Display

The results display is not automatically cleared. In case of repairs and after repairs, check the self-diagnosis screen and be sure to return the results
display to “ 0 ”.
If the results display is not returned to “ 0 ” it will not be possible to judge a new malfunction after completing repairs.

Method of Clearing Results Display

1. Power off (Set to the stand by mode.)

2.

Display

3. Channel

8

Channel

ENTER

Sound Volume

5

(Test reset = Factory preset condition)

+

Power ON (Service Mode)

Method of Ending Self Diagnosis Screen

When ending the self-diagnosis screen completely, turn the power switch OFF on the remote commander or the main unit.

KP-46WT520/51WS520/57WS520

8

KP-46WT520/51WS520/57WS520

Self-Diagnosis Function Operation

+B overcurrent (OCP)

Occurs when excessive current fl ows through R6812. The increase in voltage across Q6803 causes it to turn on which sends a high signal to the
micro.

+B overvoltage (OVP)

IC6801 detects +B OVP condition and turns on Q6802. This sends a high signal to the micro and also shuts down the AC relay.

V-STOP

Occurs when an absence of the vertical defl ection pulse is detected by pin 56 of IC452 (A Board). Power supply will shut down when waveform interval
exceeds 2 seconds.

White Balance Failure

If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be detected by IC452 (A Board). TV will stay on, but
there will be no picture.

*(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K).

Low B OCP/OVP

Occurs when set 5V is out.
Also check for : + 135V line shorted
+ 135V line is going over 145V

Horizontal Defl ection Stopped

Occurs when either:

1) a +B overcurrent is detected (Q6803), or

2) IC452 (A Board) is damaged.

Self-Diagnosis Block Diagram

IC702

STBY-LED

MAIN MICRO

STR

48

STBY-LED

44

OCP

OVP

45

43

LOW B ERR

CLKO

DATO

AC RLY

5V

A

28

31

69

Q452

G

Q6102

Q451

A

IC303

12

3

IC452

Y/C JUNGLE

SCL

53

52

SDA

RY6000

P_SW(-)

21

34

D6803

1K-PROT2

+B OCP

D452

D6505

+BVOP

D453

A

AKB

VPROT

HPROT

CRT

58

VDY-

56

57

R5104 R5105

R5125

Q5018

2

BM

IC5007

14

IC6801

+B

+B +B

R6812

5V

D

2

1

3

Q6802

D

D6805

R6803

+B OCP

KP-46WT520/51WS520/57WS520

9

1-1. REAR BOARD REMOVAL

r

SECTION 1: DISASSEMBLY

Rear board

2

KP-46WT520/51WS520/57WS520

1-2. CHASSIS ASSEMBLY REMOVAL

1

10 Screws (KP-46WT520 Only)
13 Screws (KP-51WS520 Only)
12 Screws (KP-57WS520 Only)
Dome Washer Hex Tap 4 x 20

1

Three screws Dome Washe
(Hex Tap 4 x 20)

KP-46WT520/51WS520/57WS520

Chassis assy

2

10

1-3. SERVICE POSITION

Free wiring from purse locks.

1

NOTE: Observe wire dress
and return to original condition.

2

Covers
Remove covers from chassis assembly
with pliers when checking printed circuit boards.
After checking, turn the covers over
and re-secure them with the screws.

KP-46WT520/51WS520/57WS520

Chassis assembly

1-4. TERMINAL BOARD AND P BOARD REMOVAL

6

P board

Disconnect Ground Wire and Cable

4

Two screws

5

+BVTT 3 X 8

Screws
(+BVTP 3x12)

Four screws
+BVTT 3x8

Main bracket

Terminal board

KP-46WT520/51WS520/57WS520

3

One screw

(M3 X 8) P, SW(+)

2

Six screws

1

Two screws
Dome Washer Hex Tap 4 x 20

(+BVTP 3x12)

11

1-5. BM BOARD BOARD REMOVAL

KP-46WT520/51WS520/57WS520

Pry apart shield

3

to remove BM board

BM board

Pull gently back on clips

1

to release

2

Main bracket

1-6. A BOARD, D BOARD, AND G BOARD REMOVAL

D board

Two screws
(+BVTP 3x12)

G board

Seven screws
(+BVTP 3x12)

3

2

Four screws

1

(+BVTP 3x12)

A board

KP-46WT520/51WS520/57WS520

Main bracket

4

Claws

12

e

1-7. HIGH-VOLTAGE CABLE INSTALLATION AND REMOVAL

KP-46WT520/51WS520/57WS520

(1) Removal

2

HV cable
turn 90

1

Rubber cap

(2) Installation

Gutter

Hook

HV cabl

1

1-8. PICTURE TUBE REMOVAL

CAUTION: Removing the arrow-marked screws is strictly prohibited. If removed, it may cause liquid to spill.

Four screws

4

Lens

Picture tube

2

Four screws
(2 per side)
Dome Washer
Hex Tap 4x20

3

Dome Washer Hex Tap 4x20

Lens

5

Shade

6

10

Four screws
(+BVTP 4x12)

11

Picture tube

Deflection yoke

9

Neck assy

8

CR board

7

(2 screws for Red Shade
1 screw for Green Shade)
(+BVTP 4x12)

KP-46WT520/51WS520/57WS520

1

Four screws (2 per side)
Dome Washer Hex Tap 4x20

13

A

A

1-9. SPEAKER GRILLE, HA1 BOARD, AND HB2 BOARD REMOVAL

(KP-46WT520 ONLY)

KP-46WT520/51WS520/57WS520

HB2 board

Two screws

Input Terminal Plate

The Speaker Grille Assy

Note:

fter removing the screws
pull firmly out (from the bottom)
to release it.

(+BVTP 3x12)

5

4

6

Input Terminal Bracket
Four screws

Dome Washer
Hex Tap 4 x 20

Input Terminal Cover
Two screws

(+BVTP 3x12)

1

Four screws
(2 per side)

3

2

Four screws
(+BVTP 3x12)

HA1 board

Dome Washer Hex Tap 4x20

1-10.SPEAKER GRILLE, HA1 BOARD, AND HB1 BOARD REMOVAL

(KP-51WS520/57WS520 ONLY)

HB1 board

Two screws

Input Terminal Plate

The Speaker Grille Assy

Note:
The Speaker Grille Assy
is securely attached.

fter removing the screws

pull firmly out (from the bottom)
then down to release it.

(+BVTP 3x12)

5

4

6

Input Terminal Bracket
Four screws

Dome Washer
Hex Tap 4 x 20

Input Terminal Cover
Two screws

(+BVTP 3x12)

1

Six screws Dome Washer Hex Tap 4x20

2

3

2

Four screws

(+BVTP 3x12)

HA1 board

-3 per side (KP-51WS520/57WS520 Only)

KP-46WT520/51WS520/57WS520

14

1-11. BEZNET ASSEMBLY REMOVAL

Eight screws (KP-46WT520 Only)

3

Nine screws (KP-51WS520/57WS520 Only)
Dome Washer Hex Tap 4x20

Beznet assy

4

Four screws
Dome Washer
Hex Tap 4x20

KP-46WT520/51WS520/57WS520

Four screws Dome Washer Hex Tap 4x20

2

-2 per side

1

Six screws

-3 per side (KP-46WT520 Only)
Four screws Dome Washer Hex Tap 4x20

-2 per side (KP-51WS520/57WS520 Only)

Dome Washer Hex Tap 4x20

1-11-1. SCREEN TAPE METHOD

The following demonstrates the taping method when replacing the Contrast Screen or Diffusion Plates.
For Part Numbers refer to the Miscellaneous section in the back of the manual.

Tape, Acetate (P2412) 25x30M

1

To p

2

Tape, Acetate (P2412HD) 25MMx30M

Contrast Screen

KP-46WT520/51WS520/57WS520

15

1-12.SR BOARD REMOVAL

The Screen Holder does not need
to be removed in order to remove
the SR boards.

Sensor
bracket (B)

Sensor
bracket (A)

6

SR board

5

Claws

One screw

3

(+BVTP 4x12)

1

One screw

4

(+BVTP 4x12)

Four screws
(+BVTP 4x12)

L screen

2

holder

KP-46WT520/51WS520/57WS520

KP-46WT520/51WS520/57WS520

16

46 Cabinet

KP-46WT520/51WS520/57WS520

WIRE DRESSING

46" HB

KP-46WT520/51WS520/57WS520

17

46 Cabinet

KP-46WT520/51WS520/57WS520

46" HA Wire

46 Cabinet

2nd Tape Position

46" HB

KP-46WT520/51WS520/57WS520

46" HA

18

51 & 57 Cabinet

KP-46WT520/51WS520/57WS520

51" & 57" HB

51 & 57 Cabinet

51" & 57" HB

51" & 57" HA

KP-46WT520/51WS520/57WS520

19

HV Wire

KP-46WT520/51WS520/57WS520

HV wire

HV Wire

HV wire

KP-46WT520/51WS520/57WS520

20

HV/MV Wire

KP-46WT520/51WS520/57WS520

HV/MV wire

VM Connect

VM wire

KP-46WT520/51WS520/57WS520

21

PWB Block Docking

KP-46WT520/51WS520/57WS520

PWB Block Docking

HA Connect

SP Connect

HB Connect

KP-46WT520/51WS520/57WS520

22

C, FP Connect

B

KP-46WT520/51WS520/57WS520

B-

G-

R

46 DY

G

VM

RGB signal wire

46" DY wire

V
DY-B
DY-G

DY-R

KP-46WT520/51WS520/57WS520

Into the 1st purselock

VM,RGB C/N

23

51 & 57 DY

51" & 57"DY wire dressing

V

DY-R
DY-G

DY-B

KP-46WT520/51WS520/57WS520

Into the free purselock (8dia)

Into the 2nd purselock

VM,RGB C/N

DY

H

DY-B DY-G DY-R

KP-46WT520/51WS520/57WS520

24

DY

Sub

DY-B DY-G

KP-46WT520/51WS520/57WS520

DY

Excess wire

KP-46WT520/51WS520/57WS520

25

Terminal Bracket Assy

KP-46WT520/51WS520/57WS520

ANT SW
5v C/N

Sub TU PP

HB C/N

Main TU PP

ANT SW GND

KP-46WT520/51WS520/57WS520

26

F.P

KP-46WT520/51WS520/57WS520

51 & 57 V2 Block Assy

51" & 57"

V2 BLK

51" & 57" F.P Wire Dressing

2nd-Assy V2
BLK

Test
Up(lock)/Dow

KP-46WT520/51WS520/57WS520

1st-Assy

27

AR Sensor

KP-46WT520/51WS520/57WS520

46" & 51"AR Sensor Wire

AR Sensor

57" AR Sensor Wire

Excess Wire

KP-46WT520/51WS520/57WS520

28

AR Sensor

KP-46WT520/51WS520/57WS520

Excess Wire

AR Sensor

KP-46WT520/51WS520/57WS520

29

AR Sensor

KP-46WT520/51WS520/57WS520

46 V2 Assy

HB Wire Connection

KP-46WT520/51WS520/57WS520

30