Mitsubishi Electric WD-52525 Service Manual Download

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PAGE 30

MODEL: WD-52525 / WD-52725 / WD-52825 / WD-62525 / WD-62725 / WD-62825

QUICK REFERENCE FOR COMMON REPLACEMENT PARTS

REPLACEMENT PARTS

Critical Electrical Components

are indicated by

Bold Type

in the Parts List.

Note: The DiamondShield includes the Shield, Logo, Side and Bottom Clips.

Part Name

Description

WD-52525

WD-62525

WD-52725

WD-62725

WD-52825

WD-62825

Lamp Cartridge

LAMP - CARTRIDGE

915P020010

Dust Filter

FILTER - DUST

620D144010

Remote Control

REMOTE

290P123010

290P123020

Part Name

Description

WD-52525

WD-62525

WD-52725

WD-62725

WD-52825

WD-62825

Optical Engine

OPTICAL-ENGINE

939P977010

939P977020

939P977010

939P977020

939P977010

939P977020

Electrical Chassis

(Complete)

ASSY-CHASSIS

955B298001

955B298002

955B298003

Lamp Ballast PCB

UNIT-POWER-LAMP

939P978010

Memory Card PCB

MEMORY-CARD-READER-PWB

299P271010

Preamp PCB

ASSY-PWB-PREAMP

935D774001

Front PCB

ASSY-PWB-FRONT

935D775001

935D779001

Control PCB

ASSY-PWB-CONTROL

935D776001

Right Speaker PCB

ASSY-PWB-SPEAKER-R

935D806001

Left Speaker PCB

ASSY-PWB-SPEAKER-L

935D807001

Hard Disk Drive

ASSY-HDD-UNIT

939P989010

Lamp Ballast Fan

FAN-BALLAST

299P278020

Lamp Fan

FAN-LAMP

299P282010

DMD Fan

FAN-DMD

299P283010

Chassis Fan

FAN-COOLING

299P103050

Exhaust Fan

FAN-COOLING

299P103050

Lamp Cover Detect Switch

SW-MICRO

436P021010

Filter Cover Detect Switch

SW-MICRO

436P021010

DMD Thermal Sensor

SENSOR – THERMAL

299P280010

Lamp Thermal Sensor

SENSOR-THERMAL (LAMP)

299P285010

Bold Type = Safety Critical

Part Name

Description

WD-52525

WD-62525

WD-52725

WD-62725

WD-52825

WD-62825

DiamondShield

DIAMOND - SHIELD

KIT-WD52525 DS KIT-WD62525 DS KIT-WD52725 DS KIT-WD62725 DS KIT-WD52825 DS KIT-WD62825 DS

Lenticular Screen

LENS - LENTICULAR

491P178020

491P174020

491P178020

491P176020

491P178020

491P176020

Fresnel Lens

LENS - FRESNEL

491P177020

491P173020

491P177020

491P175020

491P177020

491P175020

PWB Name

Description

WD-52525

WD-62525

WD-52725

WD-62725

WD-52825

WD-62825

Power

PWB-POWER

930B921002

930B921001

Signal

PWB-SIGNAL

930B923002

930B923001

930B923003

Format

PWB-FMT

930B924002

930B924003

930B924001

PWB-DM

934C116002

934C116003

934C116001

Terminal-1

PWB-TERMINAL 1

934C117001

934C117002

Terminal-2

PWG-TERMINAL-2

934C118001

Service Parts

Customer Replaceable Parts

Screen Parts

Chassis PWBs

Summary of Contents for WD-52525

Page 1: ...QAM64 256 1 CableCARD Slot 1 NTSC for PIP Cabinet Dimensions WD 52xxx 37 2 x 49 6 x 17 4 WD 62xxx 43 7 x 58 3 x 19 9 Weight WD 52xxx 132 4 lbs WD 62xxx 165 5 lbs Speakers 10Wx2 5 Coaxial x 2 Input Level VIDEO IN JACK RCAType 1 0Vp p 75Ω unbalanced AUDIO IN JACK RCAType 500mV RMS full scale into 43kΩ unbalanced S VIDEO IN JACK Y C separate type Y 1 0 Vp p C 0 286Vp p BURST 75Ω unbalanced 480i COMP ...

Page 2: ......

Page 3: ...TICAL ENGINE REPLACEMENT 13 DATACOPYPROCEDURE 16 DIAMONDSHIELD REPLACEMENT 17 SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS 18 INITIAL SETUP 20 FRONT PANEL LED DIAGNOSTICS 22 SERVICE ADJUSTMENTS 24 Equipment 24 CircuitAdjustment Mode 24 Adjustment Items and Initial Data Settings 26 Electrical Adjustments 27 Mechanical Adjustments 27 REPLACEMENT PARTS 30 SCREENASSEMBLY PARTS 33 CIRCUITRY BLOCK D...

Page 4: ...MODEL WD 52525 WD 52725 WD 52825 WD 62525 WD 62725 WD 62825 Page 4 ...

Page 5: ...s service manual for better understanding of the circuitry PRODUCT SAFETY NOTICE Many electrical and mechanical parts in television receivers have special safety related characteristics These charac teristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage wattage etc Replacement p...

Page 6: ...ne lead of an ohm meter to the AC plug and touch the other lead to each exposed metal part i e antennas handle bracket metal cabinet screw heads metal overlay control shafts etc particularly any exposed metal part that has a return path to the chassis The resistance of the exposed metal parts having a return path to the chassis should be a minimum of 1Megohm Any resistance below this value indicat...

Page 7: ... 3 on each side 4 Remove the 4 screws c holding the bottom of the Screen Assembly 5 Unplug connector LN from the Control Panel 6 Lift the Screen Assembly up slightly then pull towards the front to remove the assembly Refer to the Parts List for Part Numbers Reusable Wire Ties Do not cut wire ties during disassembly reusable wire ties are used in these models Lift the tab to re lease the wire tie D...

Page 8: ...ILLE BASE 4 Remove screws d on the rear of the upper back cover 3 on each side and 4 across the top 5 Remove the 4 screws c holding the bottom of the Screen Assembly 6 Unplug connector LN from the Control Panel 7 Lift the Screen Assembly up slightly then pull towards the front to remove the assembly 8 To disconnect the Card Reader and the Front Inputs Unplug the Card Reader USB connector from the ...

Page 9: ... the Fil ter Cover COVER BACK Removal 1 Remove 9 screws a 2 Remove 5 screws b 3 Remove 2 screws c 4 Pull the COVER BACK from the cabinet Rear Plate Removal 1 Remove 6 screws a 2 Remove10 screws b 3 Pull the Rear Plate from the cabinet NOTE To operate set with the Cover Back and Rear Plate removed re install the Filter Cover and ensure the Exhaust Fan is connected ...

Page 10: ... Unplug the USB and 1394 connectors from the Card Reader NOTE In the V26 chassis the Card Reader 1394 connector plug into the Hard Drive Module 3 Disconnect all cables to the front of the cabinet the Optical Engine and the Lamp Ballast see next page 4 Carefully slide the chassis from the cabinet 5 IMPORTANT After Electrical Chassis replacement perform the Data Copy Procedure page 16 ...

Page 11: ...ing The Lamp Ballast Removing the Right Support Remove the 3 screws shown below Removing the Lamp Ballast Shield 4 screws Unplug CN1 CN2 Connectors NOTE To remove the chassis the two connectors to the Lamp Ballast must be disconnected at the Lamp Ballast 4 Screws Unplug Connectors 3 Screws ...

Page 12: ...Page 12 MODEL WD 52525 WD 52725 WD 52825 WD 62525 WD 62725 WD 62825 V26 Chassis PWB Locations NOTE The HDD is only in the V26 models ...

Page 13: ...e and Optical Engine to the Adjuster assembly 2 The bottom plate tab 1 slides into slot 1 on the Adjuster 3 The Optical Engine is secured to the bottom plate by 4 screws b 4 The Black Bracket is secured to the bottom plate and the Lamp Box with 4 screws c 5 To replace the Optical Engine the Optical Engine bottom plate and black bracket need to be removed together as an assembly Refer to the follow...

Page 14: ...gine Lamp Cartridge Housing and the PCB DMD 3 From the rear of the TV remove the 4 screws c to remove the COVER DUCT and DMD Fan cover 4 From the rear of the TV remove the 4 brass colored screws a shown below securing the bottom plate to the Adjuster assembly 5 Slide the Optical Engine Lamp Cartridge Housing towards the rear to remove from the TV a Optical Engine Rear View Airduct DMD Fan Cover Re...

Page 15: ...Removal Figure 1 1 Remove screw a on the top of the DMD Fan 2 Set the Thermal Sensor aside to install on the replacement Optical Engine Figure 1 DMD Thermal Sensor Bottom Plate Black Bracket Removal 1 Remove the 4 screws B from the Bottom Plate Figure 2 2 Remove the two screws C holding the Black Bracket to the Lamp Box Figure 3 Figure 2 Bottom Plate a Heat Sensor B Bottom View Bottom Plate Therma...

Page 16: ...n See Service Manual Horizontal and Vertical Electrical Centering Adjustment Optical Unit Rotation Adjustment Optical Unit Keystone Distortion Adjustments 4 IMPORTANT After Optical Engine replacement perform the Data Copy Procedure described below Data Copy Procedure This procedure must be performed after replacing either the Electrical Chassis or Optical Engine 1 To display the data copy menu pre...

Page 17: ...he Diamond Shield It will slide out of the top channel 3 Carefully pull the screen up to remove it from the bottom channel Store the Diamond Shield in a clean dust free area where it will not be scratched To Install the Diamond Shield 4 Slide the Diamond Shield into the bottom channel making sure it fits securely 5 Press gently on the top of the Diamond Shield to slightly bow the screen towards yo...

Page 18: ...ted injuries Lenticular Screen and Fresnel Lens Removal 1 Remove the screen assembly shown in the Cabinet Disassembly procedure 2 Remove the four screws a to remove the bottom of the SCREEN FRAME BOTTOM 3 Carefully slide the Lenticular Screen and Fresnel Lens combination from the Screen Frame assembly Note When separating the Lenticular Screen from the Fresnel Lens use caution while prying the Scr...

Page 19: ...e coated tape Part LENS TAPE along the top rear edge of the Lenticular Screen as shown below Refer to the table below for the tape length 2 Place the Fresnel Lens on top of the Lenticular Screen and apply pressure at the top edge to bond them together 3 Reverse the Screen Removal procedure to insert the screens in the Screen Frame Assembly MODEL SCREEN SIZE TAPE LENGTH WD 52525 52 Inches 46 3 Inch...

Page 20: ...g Only Stereo Time Zone Level Sound Analog Only On Daylight Savings Time Language Digital Only English Timer Video Captions Menu Contrast 100 Analog Captions On if Mute Brightness 50 Background Gray Sharpness 50 Digital Caption On if Mute Color 50 Appearance Default Tint 50 Digital Settings Color Temp High Font Font 3 Video Noise Standard Size Large Film Mode Auto On Color White Define Edge On Bac...

Page 21: ...r Surround OFF OFF OFF OFF OFF N A Listen To Stereo N A N A N A N A Stereo Level Sound On On On On On N A A V RESET DEFAULT SETTINGS By Input A A V Memory Each of the external inputs has its own Audio Video Memory A change in an A V setting at a specific input is stored in memory for that specific input B A V Reset The AV Memory Reset in the user s menu initializes the selected input s A V Memory ...

Page 22: ...Lamp Fan On for 1 minute Blinks Green Off Off Stby Booting after AC applied Slow Blinks Green Off Off Stby On Timer is set Normal LED Indications Blinks 1 long 1 short Blinks 1 long 2 short Blinks 1 long 3 short POWER LED STATUS LED LAMP LED Power Status Condition Off Yellow Off Low Power Excess Temperature Off or On Off Yellow No change Usage time over 4000 Hrs Off Off Blinks Yellow Low Power Lam...

Page 23: ...ff to perform the Error Code Opera tional Check When the TV is switched Off the code automatically resets to 12 No Error Press the front panel DEVICE and MENU buttons at the same time and hold for 5 seconds to activate the Error Code Operational Check The LED will then flash denoting a two digit Code Note The front panel buttons must be used NOT those on the Remote Control The number of flashes in...

Page 24: ... generated no external signals are required Circuit Adjustment Mode On these models the Circuit Adjustment Mode is used only for Test Signal activation Horizontal Centering Vertical Centering 1 Activating the Circuit Adjustment mode 1 Press the TV MENU button on the remote control The Customer Menu will appear 2 Press the buttons 2 4 5 and 7 in that order The screen will change to the adjustment m...

Page 25: ...ENU button twice on the remote to terminate the adjustment mode Note The adjustment mode can be also terminated by turning the power off Resetting Data to Factory Values 1 Enter the Service Adjustment Mode Press TV MENU 2 4 5 7 2 Press 0 when in the Service Mode Three choices appear at the top of the screen 3 Use UP DOWN keys to highlight the desired choice then Press ENTER Copy Light Engine EEPRO...

Page 26: ...Control 0 15 2 20 UPDS U Signal Pedestal Control 0 15 2 Light Engine light eng Item Abbrev Description 120 GGH Temp H Green Gain 121 GRH Temp H Red Gain 122 GBH Temp H Blue Gain 123 GGM Temp M Green Gain 124 GRM Temp M Red Gain 125 GBM Temp M Blue Gain 126 GGL Temp L Green Gain 127 GRL Temp L Red Gain 128 GBL Temp L Blue Gain SERVICE MODE Adjustment Items and Initial Data Values AD9883A Item Abbre...

Page 27: ...een Menus will no longer be visible 11 Press HOME or TV MENU twice to terminate the Adjustment Mode Purpose Measuring Instrument Test Point Measuring Range Input Signal Ext Trigger Input Symptom Mechanical Adjustments Picture Rotation Adjustment NOTE The TV should be placed on a flat level surface Improper installation can affect raster geometry 1 Refer to the Disassembly Preocedures on Pages 7 8 ...

Page 28: ...MODEL WD 52525 WD 52725 WD 52825 WD 62525 WD 62725 WD 62825 Page 28 ...

Page 29: ...the front of the TV adjust the Horizontal Keystone Adjustment for minimum distortion 4mm allen wrench 3 From the front of the TV adjust the Vertical Keystone Adjustment for minimum distortion Note There may be some inter action between the Keystone and Rotation Adjustments 4 Tighten the Keystone Lock Screws and secure the adjustment screws with Locktite Horizontal Keystone Distortion Vertical Keys...

Page 30: ...9P278020 299P278020 299P278020 299P278020 299P278020 299P278020 Lamp Fan FAN LAMP 299P282010 299P282010 299P282010 299P282010 299P282010 299P282010 DMD Fan FAN DMD 299P283010 299P283010 299P283010 299P283010 299P283010 299P283010 Chassis Fan FAN COOLING 299P103050 299P103050 299P103050 299P103050 299P103050 299P103050 Exhaust Fan FAN COOLING 299P103050 299P103050 299P103050 299P103050 299P103050 2...

Page 31: ...C SC1566I5M 2 5TR IC81A6 270P037020 IC MIC29301 5 0BU IC81A7 270P999010 IC NJM2370R09 IC81A8 271P081010 IC BA00CC0WFP IC8205 276P042010 IC C MOS MIC2544 1BM IC8211 276P029020 IC C MOS NT5DS16M16BT 5T IC8212 276P029020 IC C MOS NT5DS16M16BT 5T IC8280 275P955010 IC C MOS RTC 8564JE IC8301 275P677010 IC C MOS SN74LVC573APWR IC8302 275P677010 IC C MOS SN74LVC573APWR IC8303 275P677010 IC C MOS SN74LVC5...

Page 32: ...G125DBVR IC8T11 271P023010 IC SN74CBTD1G125DBVR IC9A10 267P175010 HIC STR W6735 IC9A11 270P696010 IC BA05SFP IC9A12 271P081010 IC BA00CC0WFP IC9A20 270P816010 IC NJM431L IC9A21 270P991010 IC IRU3037CS IC9C01 271P071020 IC BA09SFP IC9C21 271P072020 IC LD29150DT33 IC9C41 271P072030 IC LD29150DT50 IC9M01 270P677010 IC BA033FP IC9M02 270P992020 IC BA25BC0FP IC9M03 271P071020 IC BA09SFP IC9M04 270P6960...

Page 33: ...U MA142WK D9A42 264P828010 D CHIP DAN202U MA142WK D9A43 264P828010 D CHIP DAN202U MA142WK D9A44 264P828010 D CHIP DAN202U MA142WK D9A45 264P828010 D CHIP DAN202U MA142WK D9A60 264P669030 DIODE S3L20U D9A61 264P669030 DIODE S3L20U D9A80 264P828010 D CHIP DAN202U MA142WK D9A81 264P828010 D CHIP DAN202U MA142WK D9A82 264P828010 D CHIP DAN202U MA142WK D9C40 262P090010 DIODE M1FP3 D9F01 264P212020 D LE...

Page 34: ...f L7A64 409P865060 EMI F CHIP BLM11B141S L7A65 409P865060 EMI F CHIP BLM11B141S bcef L7A65 409P865060 EMI F CHIP BLM11B141S L7A66 409P865060 EMI F CHIP BLM11B141S bcef L7A66 409P865060 EMI F CHIP BLM11B141S L7A67 409P865060 EMI F CHIP BLM11B141S bcef L7A67 409P865060 EMI F CHIP BLM11B141S L7A88 409P777050 EMI F CHIP BLM21B201S bcef L7A90 409P865060 EMI F CHIP BLM11B141S bcef L7A90 409P865060 EMI F...

Page 35: ...9P865080 EMI F CHIP BLM18PG6 L8320 409P865080 EMI F CHIP BLM18PG6 be L8321 409P865080 EMI F CHIP BLM18PG6 L8321 409P865080 EMI F CHIP BLM18PG6 be L8322 409P865080 EMI F CHIP BLM18PG6 L8322 409P865080 EMI F CHIP BLM18PG6 be L8323 409P865080 EMI F CHIP BLM18PG6 L8323 409P865080 EMI F CHIP BLM18PG6 be L8324 409P865080 EMI F CHIP BLM18PG6 L8324 409P865080 EMI F CHIP BLM18PG6 be L8326 409P865080 EMI F ...

Page 36: ...OIL RF 2 7MH M L8F04 351P250010 COIL CHOKE GSTC6018 100M L8F05 321C140060 COIL RF 2 7MH M L8F06 409P777080 EMI F CHIP BLM21P221S L8F07 409P777080 EMI F CHIP BLM21P221S L8F08 409P777080 EMI F CHIP BLM21P221S L8F09 409P777080 EMI F CHIP BLM21P221S L8F10 409P777080 EMI F CHIP BLM21P221S L8F12 409P777080 EMI F CHIP BLM21P221S L8F13 409P777080 EMI F CHIP BLM21P221S L8F14 409P777080 EMI F CHIP BLM21P221...

Page 37: ...P NFL21SP506X13CD LC8520 409P945010 EMI F CHIP NFL21SP506X13CD LC8521 409P945010 EMI F CHIP NFL21SP506X13CD LC8522 409P945010 EMI F CHIP NFL21SP506X13CD LC8523 409P945010 EMI F CHIP NFL21SP506X13CD LC8524 409P945010 EMI F CHIP NFL21SP506X13CD LC8525 409P945010 EMI F CHIP NFL21SP506X13CD LC8526 409P945010 EMI F CHIP NFL21SP506X13CD LC8527 409P945010 EMI F CHIP NFL21SP506X13CD LC8528 409P945010 EMI ...

Page 38: ...92050 1 16W 1K F 103P505090 1 16W680K J 103P502050 1 16W 1K J 103P506000 1 16W820K J 103P492060 1 16W 1 1K F 103P506010 1 16W 1M J 103P492070 1 16W 1 2K F 103P400050 1 10W 22 J 103P502060 1 16W 1 2K J 103P400090 1 10W 47 J 103P492080 1 16W 1 3K F 103P401000 1 10W 56 J 103P492090 1 16W 1 5K F 103P401030 1 10W 100 J 103P502070 1 16W 1 5K J 103P401050 1 10W 150 J 103P493010 1 16W 1 8K F 103P409050 1 ...

Page 39: ... 2W 4 7M K R9F01 103P713030 R CARBON 1 4W 4 7K J R9F02 103P713030 R CARBON 1 4W 4 7K J R9F03 103P713070 R CARBON 1 4W 10K J R9F04 103P713070 R CARBON 1 4W 10K J R9F05 103P712030 R CARBON 1 4W 680 J R9F06 103P711030 R CARBON 1 4W 100 J R9F07 103P713070 R CARBON 1 4W 10K J R9F08 103P713070 R CARBON 1 4W 10K J R9F09 103P713040 R CARBON 1 4W 5 6K J R9F10 103P713030 R CARBON 1 4W 4 7K J R9M00 103C28803...

Page 40: ...V 10M M 105C C8749 181P184020 C ELEC 35V 100M M C8751 181P185060 C ELEC 50V 10M M 105C C8754 181P184020 C ELEC 35V 100M M C8760 181P352030 C ELEC 16V 47M M C8761 181P352060 C ELEC 16V 330M M C8765 181P352030 C ELEC 16V 47M M C8772 181P732000 C ELEC 10V 680M M 105C C8773 181P353020 C ELEC 25V 10M M C8780 181P182010 C ELEC 16V 330M M 105C C8786 181P352030 C ELEC 16V 47M M C8788 181P352060 C ELEC 16V...

Page 41: ...RD KSHS611BT S7L27 432P109010 SW KEY BOARD KSHS611BT S7L28 432P109010 SW KEY BOARD KSHS611BT S7L29 432P109010 SW KEY BOARD KSHS611BT S9F01 432P109010 SW KEY BOARD KSHS611BT MISCELLANEOUS 096Z465030 TAPE LENS abcef 096Z465080 TAPE LENS 242D527010 CABLE IR 242D535060 CABLE 1394 1000mm abde 242D535070 CABLE 1394 1300mm cf 242D536030 CABLEMEMORY 242D540010 CABLE IF F CONN 250mm 242D543010 CABLE 1394 5...

Page 42: ...1P PJ8H00 440C440010 PIN JACK BOARD abde PJ8H00 440C449010 PIN JACK BOARD cf TU8700 295P490040 TUNER TV ENA46914P4A TU8701 295P523020 TUNER NTSC ATSC TU8702 295P524010 TUNER OOB X2K51 285P426020 QTZ CRYST 4 000000MHZ X2M47 285P426040 QTZ CRYST 20 000MHZ X7A13 285P434020 QTZ CRYST 16 000MHZ X7J10 285P335050 QTZ CRYST 80 000MHZ X7P09 285P434010 QTZ CRYST 8 000MHZ X8001 285P441040 QTZ CRYST 26 1621MH...

Page 43: ...A247010 GRILLE BASE c 761A248010 GRILLE BASE f 761A250010 DOOR REAR c 761A251010 DOOR REAR f 761B411010 GRILLE SPEAKER RIGHT c 761B411020 GRILLE SPEAKER LEFT c 761B412010 GRILLE SPEAKER RIGHT f 761B412020 GRILLE SPEAKER LEFT f 775B141040 NAME PLATE WD 52525 a 775B141050 NAME PLATE WD 62725 d 775B141060 NAME PLATE WD 52725 b 775B141070 NAME PLATE WD 62725 e 775B141080 NAME PLATE WD 52825 c 775B1410...

Page 44: ...D SHIELD a 11 761A232010 SCREEN FRAME BOTTOM ab 12 761A238010 SCREEN COVER FRAME TOP ab 13 768C082010 SCREEN CAP CORNER LEFT abcdef 14 768C082020 SCREEN CAP CORNER RIGHT abcdef WD 52725 1 491P178020 SCREEN LENTICULAR abc 2 491P177020 LENS FRESNEL abc 3 622C211010 CLIP DS BOTTOM abc 4 622C137010 CLIP DS SIDE abcdef 5 623D174030 SCREEN HOLDER abc 6 701B499030 SCREEN FRAME TOP abc 7 701B500030 SCREEN...

Page 45: ...761A242010 SCREEN FRAME BOTTOM de 12 761A244010 SCREEN COVER FRAME TOP de 13 768C082010 SCREEN CAP CORNER LEFT abcdef 14 768C082020 SCREEN CAP CORNER RIGHT abcdef WD 62725 1 491P176020 SCREEN LENTICULAR def 2 491P175020 LENS FRESNEL def 3 622C211020 CLIP DS BOTTOM def 4 622C137010 CLIP DS SIDE abcdef 5 623D174040 SCREEN HOLDER def 6 701B499040 SCREEN FRAME TOP def 7 701B500040 SCREEN FRAME SIDE de...

Page 46: ...MODEL WD 52525 WD 52725 WD 52825 WD 62525 WD 62725 WD 62825 Page 46 STANDBY POWER SUPPLIES SWITCHED POWER SUPPLIES ...

Page 47: ...MODEL WD 52525 WD 52725 WD 52825 WD 62525 WD 62725 WD 62825 Page 47 TUNING CIRCUITRY SIGNAL PATH ...

Page 48: ...MODEL WD 52525 WD 52725 WD 52825 WD 62525 WD 62725 WD 62825 Page 48 A V VIDEO SELECT ...

Page 49: ...MODEL WD 52525 WD 52725 WD 52825 WD 62525 WD 62725 WD 62825 Page 49 Y Cb Cr FORMATTER DM SIGNAL PATH ...

Page 50: ...MODEL WD 52525 WD 52725 WD 52825 WD 62525 WD 62725 WD 62825 Page 50 A V SOUND SELECT ...

Page 51: ...MODEL WD 52525 WD 52725 WD 52825 WD 62525 WD 62725 WD 62825 Page 51 PWB SIGNAL SOUND SELECT SOUND OUTPUT CIRCUIT ...

Page 52: ...MODEL WD 52525 WD 52725 WD 52825 WD 62525 WD 62725 WD 62825 Page 52 SERIAL CONTROL LINES ...

Page 53: ...MODEL WD 52525 WD 52725 WD 52825 WD 62525 WD 62725 WD 62825 Page 53 COMMAND INPUT CIRCUITRY RESET CIRCUITRY ...

Page 54: ...MODEL WD 52525 WD 52725 WD 52825 WD 62525 WD 62725 WD 62825 Page 54 STATUS MONITORING CIRCUITRY ...

Page 55: ......

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