Service manual

ManualsBrandsMitsubishi ManualsTVWL-82913

CAUTION:

Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and

"PRODUCT SAFETY NOTICE" contained in this manual.

 Design specifications are subject to change without notice.

MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.

9351 Jeronimo Road, Irvine, CA 92618-1904

MITSUBISHI ELECTRIC

Service

Manual

2003

LIQUID CRYSTAL ON SILICON PROJECTION TV

V23L CHASSIS

SPECIFICATIONS

 Power Input : AC 120V, 60Hz

 Power Usage : 380W

 Light Engine : 3 Liquid Crystal on Silicon ICs (LCOS)

 Light Source : 200W

 Frequency Range : VHF 54 ~ 470MHz

UHF 470 ~ 806MHz

 Antenna Input : VHF/UHF 75Ω unbalanced

2 - NTSC

1 - ATV/QAM

 Cabinet Dimensions

83.25""(W) x 73.75"(H) x 29.3"(D)

 Weight : 519 lbs

 Speakers (8 Ohms 10W)

: 2-5"x7" oval 10W midrange speakers

: 2-1.5" round 10W tweeters

 Input Level : VIDEO IN JACK (RCA Type)

1.0Vp-p 75Ω unbalanced

: AUDIO IN JACK (RCA Type)

-4.7dBm 43kΩ unbalanced

: S-VIDEO IN JACK

(Y/C separate type)

Y:1.0 Vp-p C:0.286Vp-p(BURST)

75Ω unbalanced

: COMP / Y, Cr, Cb (RCA Type)

Y: 1.0 Vp-p Cr, Cb: 700mVp-p

: ATV / Y(G), Pr(R), Pb(B), H, V

Y: 1.0Vp-p with sync 75Ω (BNC)

Pr, Pb: 700mV 75Ω

H, V: 3.0Vp-p 75Ω

: VGA / R,G,B,V,H (15 pin D)

 Output Level : VIDEO OUT JACK (RCA Type)

1.0Vp-p 75Ω unbalanced

: AUDIO OUT JACK (RCA Type)

-4.7dBm 4.7kΩ unbalanced

 Digital : IEEE-1394 I/O Jacks

Interface : AC-3 Digtal Audio Output

: MonitorLink

/DVI

: MonitorLink

Control/RS-232C

: 4 Memory Card Reader Inputs

MODEL

WL-82913

Summary of content (56 pages)

PAGE 1
Service Manual 2003 MITSUBISHI ELECTRIC LIQUID CRYSTAL ON SILICON PROJECTION TV V23L CHASSIS MODEL WL-82913 CAUTION: Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and "PRODUCT SAFETY NOTICE" contained in this manual.
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MODEL: WL-82913 CONTENTS INTRODUCTION .................................................................................................................................. 5 PRODUCT SAFETY NOTICE ............................................................................................................... 5 SAFETY PRECAUTIONS ..................................................................................................................... 6 TV DELIVERY & INSTALLATION Cabinet Assembly .....................
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MODEL: WL-82913 Optical Adjustments General Adjustment procedure .............................................................................................. Operational Preparation ........................................................................................................ Selecting and Internal Test Signal ......................................................................................... Picture Rotation Adjustment ......................................................................
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MODEL: WL-82913 INTRODUCTION This service manual provides service instructions for PTV Models WL-82913 which uses the V23L chassis. Service personnel should read this manual thoroughly before servicing this chassis. This service manual includes: 1. Assembly and disassembly instructions for the front and rear cabinet components. 2. Servicing of the Diffuser Screen and Fresnel Lens. 3. Servicing printed circuit boards (PCBs). 4. Electrical adjustments. 5. Optical Adjustments 6.
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MODEL: WL-82913 SAFETY PRECAUTIONS NOTICE: Observe all cautions and safety related notes located inside the receiver cabinet and on the receiver chassis. WARNING: 1. 2. Operation of this receiver outside the cabinet or with the cover removed presents a shock hazard from the receiver's power supplies. Work on the receiver should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltage equipment.
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MODEL: WL-82913 TV Delivery and Installation ��
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MODEL: WL-82913 ��
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MODEL: WL-82913 DiamondShield™ Installation and Removal ��
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MODEL: WL-82913 Arc Assembly Installation ��
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MODEL: WL-82913 ��
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MODEL: WL-82913 Dust Filter Cleaning ��
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MODEL: WL-82913 Lamp Cartridge Replacement ��
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MODEL: WL-82913 ��
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MODEL: WL-82913 LAMP TROUBLESHOOTING PROCEDURE If lamp replacement does not restore operation, use the following troubleshooting procedure.
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MODEL: WL-82913 CABINET DISASSEMBLY (FRONT VIEW) *Refer to the Parts List for Part Numbers Front Cabinet Disassembly 1. 2. 3. 4. 5. Remove the Speaker Grille by pulling forward. Slide the Front Panel Cover to the right (Arrow 1). Remove the Lamp Cartridge Access Cover by removing screws (A).. Remove the screws (B) securing the Front Panel Assembly, one at the top and six at the bottom.
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MODEL: WL-82913 CABINET DISASSEMBLY (REAR VIEW) *Refer to the Parts List for Part Numbers CAUTION: DO NOT tilt the Light Box when removed from the Cabinet. This can cause lamp damage and failure. Rear Cabinet Disassembly 1. 2. 3 4. 5. 6. 7. Remove screw (A), (B) and (C) to remove the Back Board. Remove screws (D) and remove the Sheet Top LA. Remove screws (E) to remove the Board Slide and Fan. Remove screws (F) to remove the Board Shelves.
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MODEL: WL-82913 SERVICING THE DIFFUSER SCREEN AND FRESNEL LENS CAUTION: Wear gloves when handling the Diffuser Screen and Fresnel Lens. This prevents cuts and finger prints. Do not place Fresnel Lens in the sun. This may cause fire and heat related injuries. Diffuser 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 Screen Frame Top. 3.
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MODEL: WL-82913 LIGHT BOX OPERATION (Outside the cabinet) Light Box Removal Besides removing the Lamp Cartridge Access Cover and the items shown of page 8, several connectors have to be disconnected to remove the Light Box Assembly. Note: The Lamp Cartridge Access Cover must be re-installed after the Light Box has been removed. ES connector ... Speakers RF connector ... Preamp & Control Panel LS connector ... Control Panel CE connector ... Front Inputs 1394 & USB connectors ... Card Reader EX-F ...
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MODEL: WL-82913 Main Chassis Accessing the Chassis 1. 2. 2. 3. 4. Undo the cable wire ties to the Front Panel, Speakers, etc. Unplug the Card Reader USB and 1394 cables from the top of the DM module. Remove screw (a) securing the Main Chassis. Release the Chassis Locks on each side of the chassis. Carefully slide the Chassis to the rear of the unit.
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MODEL: WL-82913 DM Module Replacement 1. Unplug the Card Reader USB and 1394 cables from the DM module, and refer to the Chassis Removal Procedure to slide the chassis towards the rear of the set. 2. Remove screws (a), to remove the DM Rear Panel, Figure 1. 3. Remove screws (a) and (b) to remove the DM Module Cover, Figure 2. 3. Remove the E2P module from the original DM and plug it into the replacement DM. 5. Plug the DM module securely into the PCB-DTV-TUNER. 6.
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MODEL: WL-82913 ELECTRICAL ADJUSTMENTS Note: Perform only the adjustments required. Do not attempt an alignment if proper equipment is not available. Test Equipment • • • Oscilloscope (Unless otherwise specified, use 10:1 probes) Signal Generator (both SD and HD capable) Electrical Tools Test Signal 1) Composite Video Signal Signal Level :1.0Vp-p (Ω) Video :0.714Vp-p Sync :0.286Vp-p Burst :-.286Vp-p 2) Component Signal (YPbPr) Y level :1.0Vp-p (75Ω) Video :0.7Vp-p Sync :0.3Vp-p Pb, Pr Signal Level :0.
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MODEL: WL-82913 A/V Memory Contrast Brightness Sharpness Color Tint Color Temp. Video Noise Image Type VSM Sharpness Bass Treble Balance Surround Listen To Level Sound A/V RESET DEFAULT SETTINGS (By Input) INPUTS Compon. Ant A/B Ant DTV Inp-DTV VGA 1/2/3 1/2 Max. Max. Max. Max. Max. Max.
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MODEL: WL-82913 2. LED Designations (Abnormal Conditions) POWER Off _ LEDs STATUS Yellow Off Lamp Cover is open Off Off No Lamp Installed Off Off Abnormal Conditions Temperature Hot (Check Air Filter) Lamp usage over 3000 hours Lamp Failed to turn On (or broken) Off Fan stopped Off Circuit Failure (short problem) Off • Status LED ….
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MODEL: WL-82913 Circuit Adjustment Mode Most of the adjustments can only be performed using the remote hand unit. Many of the adjustments must be performed in both the 480i and 1080i modes. Video/Color adjustments must be performed in the 480i and 1080i modes, and data must be preset in the 480P (DVD) and VGA modes. Note: Set the Remote Operational Mode to “NetCommandTM”. (Hold the “Power” button and press “9-3-5” in sequence.) This slows the remote’s response and makes adjustments easier.
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MODEL: WL-82913 E. Terminating the Circuit Adjustment Mode Press the “MENU” button on the remote hand unit twice to terminate the adjustment mode. Note: The circuit adjustment mode can also be terminated by turning power OFF. F. Service Mode Reset To reset items in the Service Mode to their factory values: 1. Press MENU-0-3-5-7 to enter the Service Mode. 2. Press the “0,1,2,3,” insequence to Reset to the Factory settings. On Screen Display Position Adjustment Mode Activation 1. 2.
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MODEL: WL-82913 Adjustment Test Points Test Points JA pin 26 ......... Main Y Gain JA pin 28 ......... Main Color Level JA pin 35 ......... Sub Y Gain JA pin 37 .........
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MODEL: WL-82913 [Video Circuit] Purpose: To set picture luminance. 1. Main/Sub Y Gain Symptom: Excessive or insufficient brightness. Measuring Instrument Oscilloscope Test Point JA pins 26 & 35 Ext. Trigger ------ Measuring Range 50mV/Div Input Signal ColorBars (100% White level) Input Terminal Video Input (1 or 2) 1. 2. 3. 4. 5. 6. 7. 8. 9. Supply a color bar signal to Video Input 1 or 2 (not an RF input). Select the color bar signal as the source for both main and sub pictures.
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MODEL: WL-82913 [On Screen Display] Purpose: To position the character display horizontally. 12.Character Position Symptom: Incorrect display position Measuring Instrument ----- Test Point ----- Ext. Trigger ------ Measuring Range ------ Input Signal Video Signal (NTSC) Input Terminal ANT-A 1. 2. 3. 4. Supply an NTSC signal to Ant-A and select Ant-A as the source. Enter the OSD Position Mode, press “MENU-0-3-8-8”. Adjust “OSDSD” to center the OSD horizontally.
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MODEL: WL-82913 [High Voltage Circuit] Purpose: To center picture on the screen. 3. Horizontal/Vertical Position Symptom: Picture is off center. Measuring Instrument ---- Test Point ---- Ext. Trigger ------ Measuring Range ------- Input Signal None Input Terminal Comp-1 / DTV CIRCUIT ADJUST MODE Activate …….. MENU-0-3-5-7 Function …...………..AUDIO Item No. ……….…….VIDEO Adjust Data ….…….ADJUST Save Data …. ………ENTER Exit …………..MENU (twice) Alignment for all inputs except Ant-DTV 1.
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MODEL: WL-82913 OPTICAL UNIT ADJUSTMENTS General Adjustment Procedure 1. Loosen the locking screw (brass) for the specific adjustment. 2. Rotate that adjustment adjusting screw (black) to perform the adjustment. 3. After adjusting, tighten the locking screws. Operational Preparations Lamp Bracket Preparations Loosen The 6 Locking Screws (A through F) in the Lamp Box Support Bracket, refer to Figure 1.
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MODEL: WL-82913 Screen Preparation 1. Attach masking tape to the center of each side of the screen frame. (Fig.2) 2. Mark the center of the each side of the screen frame over the tape with a pen. (Fig.2) Selecting Internal Test Signals 1. Press the buttons “MENU”, “0”, “3”, “5” “7” in order. 2. Select Item “1 TPAT” in the AKi function. 3. Select “1 (FRAME 1)” test pattern. The adjustment signal in Fig. 3 is displayed on the screen.
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MODEL: WL-82913 Picture Rotation Adjustment Refer to Fig. 4 1. Slightly loosen the two Locking Screws (1). 2. Use (A-1) to adjust rotations 3. Tighten the two Locking Screws (1). Adjusting Vertical Trapezoid Distortion Refer to Fig. 5 1. Slightly loosen the two Locking Screws (2) 2. Use (A-2) to adjust Vertical Trapezoid Distortion. NOTE: If the picture moves horizontally, use the electrical Horiz. Position adjustment to recenter the picture. 3) Tighten the two Locking Screws (2).
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MODEL: WL-82913 Adjusting Horizontal Trapezoid Distortion Refer to Fig. 6 1. Slightly loosen the three Locking Screws (3) 2. Use (A-3) to adjust Horizontal Trapezoid Distortion. NOTE: If the picture moves vertically, use the electrical Vertical Position adjustment to recenter the picture. 3) Tighten the three Locking Screws (3).
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MODEL: WL-82913 CHIP PARTS REPLACEMENT Some resistors, shorting jumpers (0 Ohm resistors), ceramic capacitors, transistors and diodes are chip parts. The following precautions should be taken when replacing these parts. Cautions: 1. Use a fine tipped, well insulated soldering iron (approximately 30 watts), and tweezers. 2. Melt the solder and remove the chip parts carefully so as not to tear the copper foil from the printed circuit board. 3. Discard removed chips; do not reuse them. 4.
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MODEL: WL-82913 REPLACEMENT PARTS Parts Ordering To expedite delivery of replacement parts orders, specify the following: 1. Model Number/Serial Number 2. Part Number and description 3. Quantity Note: Unless complete information is supplied, delay in processing of orders will result. Critical and Warranty Parts Designation Critical Electrical Components are indicated by Bold Type in the Parts List, and in the schematic diagrams by shading. Warranty Return Parts are indicated in the Parts List with an (*).
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MODEL: WL-82913 QUICK REFERENCE FOR COMMON REPLACEMENT PARTS PART DESCRIPTION SCREENS LENS-FRESNEL - 82" SCREEN-DIFFUSER - 82" DIAMOND SHIELD - 82" PCBs PCB-CONTROL PCB-DEMOD PCB-DM PCB-DTVTUNER PCB-E2P PCB-FORMATTER PCB-FRONT PCB-LCOS-INTERCONNECT PCB-MEMORY-CARD PCB-MLINK PCB-POW E R PCB-PREAMP PCB-SIGNAL PCB-SUB-POWER PCB-TERMINAL PART DESCRIPTION OPTICAL UNIT LAMP-CARTRIDGE LAMP-POW E R-UNIT SENSOR-LAMP TEMPERATURE FANS FAN-COMBINER PART NUMBER 491P169010 491P168010 KIT-WL82913 DS 935D748001 934C066
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MODEL: WL-82913 [#] Model Legend: [a] WL-82913 Ref # Part # Part Name & Description INTEGRATED CIRCUITS IC2A00 IC2A95 IC2B00 IC2C00 IC2D00 IC2D01 IC2D02 IC2D03 IC2E00 IC2E20 IC2E65 IC2F00 IC2F10 IC2G00 IC2H01 IC2K00 IC2L00 IC2S01 IC3A01 IC3E01 IC5200 IC5251 IC5252 IC5253 IC52A0 IC52A1 IC52A2 IC53A1 IC53A2 IC53A3 IC5409 IC54K2 IC54K3 IC54K6 IC54K7 IC54Z1 IC54Z3 IC54Z4 IC55A6 IC55A7 IC55A8 IC55E1 IC55E3 IC5602 IC5I01 IC7000 IC7001 IC7002 IC7003 IC7A00 IC7B00 IC7B01 IC7B20 IC7C30 IC7C50 IC7C70 IC7C80 IC7C85
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MODEL: WL-82913 [#] Model Legend: [a] WL-82913 Ref # Part # Q9A20 Q9A21 Q9D00 Q9D01 Q9D02 Q9D03 Q9D04 Q9D05 Q9D06 Q9D07 Q9D10 Q9D11 Q9D12 Q9D13 Q9D14 Q9D15 Q9D18 Q9D19 Q9D20 Q9D21 Q9F01 Q9F02 Q9F03 260C004010 260C004010 260C004010 260C004050 261P101010 260C603010 261P101010 260C004010 261P101010 260C004010 260C604010 260C604010 260C604010 260C604010 260C604010 260C604010 260C604010 260C604010 261P101010 260C004010 261P110010 260P325010 260P741010 D2D28 D2J91 D2L80 D2L81 D5280 D52A0 D5401 D5405 D7513 D7K
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MODEL: WL-82913 [#] Model Legend: [a] WL-82913 Ref # Part # Part Name & Description L2E20 L2E31 L2E38 L2E46 L2F01 L2F25 L2F40 L2F60 L2F80 L2G01 L2G25 L2G50 L2G70 L2G71 L2G72 L2H01 L2H04 L2H28 L2H51 L2J70 L2K42 L2L42 L2L80 L2L81 L2L82 L2L83 L2L84 L2L85 L3A10 L3A49 L5105 L5115 L51P3 L51P3 L51P4 L51P4 L5200 L5201 L5202 L5203 L5204 L5205 L5206 L5207 L5208 L5250 L5253 L5256 L52A0 L52A1 L52A2 L52A3 L52A4 L5301 L5302 L5400 L5401 L5402 L5403 L5404 409P777080 409P777080 409P777080 409P777080 409P777080 409P77708
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MODEL: WL-82913 [#] Model Legend: [a] WL-82913 Ref # L5911 L5911 L5912 L5912 L5913 L59A0 L59A1 L59A1 L59E0 L59E0 L59L0 L59M1 L59R0 L59R2 L59R3 L59T0 L59T1 L59T2 L59X0 L5I14 L7000 L7005 L7006 L7502 L7A90 L7A99 L7B20 L7B91 L7C00 L7C63 L7C64 L7C65 L7C66 L7C70 L7C80 L7C81 L7C82 L7I14 L7K01 L7M14 L8A00 L8A01 L8A02 L8A03 L8A04 L8A06 L8A07 L8A08 L8A09 L8A10 L8A11 L8B01 L8B02 L8B03 L8B04 L8B06 L8B07 L8B08 L8B09 L8B10 Part # 409P777080 409P777080 409P777080 409P777080 409P777080 409P777080 409P777080 409P777080 409
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MODEL: WL-82913 [#] Model Legend: [a] WL-82913 Ref # Part # Part Name & Description L8F22 L8F23 L8F24 L8F25 L8F26 L8F31 L8F32 L8F33 L8F34 L8F35 L8F36 L8F37 L8F38 L8F39 L8F41 L8F42 L8F43 L8F44 L9A00 L9A01 L9A02 L9A05 L9A06 L9A20 L9A54 L9A55 L9A56 L9B02 L9B02 L9B03 L9B03 L9B05 L9B05 L9B06 L9B06 L9B07 L9B07 L9B09 L9B09 L9B10 L9B10 L9B11 L9B11 L9B13 L9B13 L9B14 L9B14 L9B15 L9B15 L9B24 L9D00 L9D01 L9D02 L9D03 L9D04 L9D05 L9D06 L9D07 L9D08 L9D09 409P865060 409P777080 409P777080 409P865060 409P865060 409P77708
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MODEL: WL-82913 [#] Model Legend: [a] WL-82913 Ref # Ref # R3E02 R3E03 R3E04 R3E05 R3E06 R3E07 R3E08 R3E09 R3E10 R7044 R7052 R7C55 R7C68 R7K01 R7K02 R7K05 R7K21 R7K22 R7K23 R7K24 R7K25 R7K26 R7K27 R7K28 R7K29 R7K30 R7K31 R7K32 R7K34 R7K35 R7K36 R7L26 R7L27 R7L28 R7L29 R7L30 R7L31 R7L32 R9A00 R9A01 R9A02 R9A03 R9A04 R9A05 R9A06 R9A07 R9A08 R9A20 R9A21 R9A22 R9A23 R9A24 R9A25 R9A26 R9A27 R9A28 R9A29 R9A72 Part # Conventional Part # 103P713050 103P713050 103P712080 103P712080 103P713070 109D151010 109D151010
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MODEL: WL-82913 [#] Model Legend: [a] WL-82913 Ref # Part # Part Name & Description R9D63 R9D64 R9D65 R9D66 R9D67 R9D68 R9D69 R9D70 R9D71 R9D72 R9D73 R9D74 R9F01 R9F02 R9F03 R9F04 R9F05 R9F06 R9F07 R9F08 R9F09 R9F10 R9F11 R9F12 R9F13 R9F14 R9F15 R9F16 R9F17 R9F18 R9F20 R9F21 R9F22 R9F23 R9F24 103P710050 103P712080 103P710010 103P711080 103P714090 103P715010 103P711030 103P713030 103P715050 103P714080 103P712080 103P715000 109P114030 103P467050 103P467050 103P467050 103P463020 103P464090 103P466050 103P4
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MODEL: WL-82913 [#] Model Legend: [a] WL-82913 Ref # C2G50 C2G70 C2G72 C2H01 C2H03 C2H29 C2H49 C2J70 C2J71 C2J72 C2J73 C2J75 C2J76 C2J77 C2J78 C2K01 C2K03 C2K08 C2K10 C2K24 C2K32 C2K50 C2K52 C2K54 C2K80 C2L01 C2L03 C2L08 C2L10 C2L15 C2L17 C2L35 C2L49 C2L50 C2L60 C2L63 C3A13 C3A22 C3A29 C3A30 C3A32 C3A34 C3A47 C3A52 C3E01 C3E02 C3E03 C3E04 C3E05 C3E06 C3E07 C3E08 C3E09 C3E10 C3E11 C3E12 C3E13 C3E14 C5200 C5203 Part # 181P352030 181P352030 181P352030 181P352050 181P352050 181P352040 181P352050 181P351050 181
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MODEL: WL-82913 [#] Model Legend: [a] WL-82913 Ref # Part # Part Name & Description C9A72 C9A74 C9A75 C9A76 C9B01 C9B02 C9B10 C9C25 C9C27 C9C30 C9C32 C9C35 C9C37 C9C40 C9C42 C9C51 C9C53 C9D00 C9D01 C9D02 C9D03 C9D05 C9D06 C9D07 C9D08 C9D09 C9D10 C9D11 C9D12 C9D13 C9D14 C9D15 C9D16 C9D17 C9D18 C9D19 C9D20 C9D21 C9D22 C9D23 C9D24 C9D25 C9D26 C9D27 C9D30 C9D31 C9D32 C9D33 C9D34 C9D35 C9D36 C9D37 C9D38 C9D39 C9D40 C9D41 C9D42 C9D43 C9D44 C9D45 172P339070 172P083010 185D122050 185D122050 181P182030 181P18203
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MODEL: WL-82913 [#] Model Legend: [a] WL-82913 Ref # Part # 589C063020 593C960010 598D552010 598D552020 620D133010 641A516010 642C416010 689D006010 702A432010 702A433010 752B127010 760A011020 760A012010 761C273010 762A202010 762C100010 767D074010 915P016010 939P953010 939P954010 955C241001 RV9A00 265P100020 TH9F01 265P130020 TH9F02 265P130020 F9A00 283D131040 F9A01 283P144060 F9A02 283D147090 F9D00 283P144090 F9D01 283P144070 F9D02 283P144080 F9D03 283P144090 F9D04 283P144070 F9D05 283P144070 F9F01 283P14
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MODEL: WL-82913 [#] Model Legend: [a] WL-82913 Ref # Part # Part Name & Description [#] Ref # Part # Part Name & Description SCREEN ASSEMBLY PARTS (1) (2) (3) (4) (5) 491P168010 491P169010 702A438010 702A438020 711B032010 SCREEN-DIFFUSER - 82" LENS-FRESNEL - 82" CAP-CORNER - LEFT CAP-CORNER - RIGHT FRAME-TOP (6) (7) (8) (9) PAGE 48 711B034010 711C049010 712C702010 KIT-WL82913 DS FRAME-SIDE FRAME-BOTTOM FRAME-TRIM-TOP DIAMOND SHIELD KIT - 82" [#]
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MODEL: WL-82913 Standby Power Supply Circuitry Page 49
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MODEL: WL-82913 Lamp Power Supply Switched Power Supply Circuitry Page 50
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PCB-TERMINAL Video/Color Signal Path MODEL: WL-82913 Page 51
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MODEL: WL-82913 PCB-SIGNAL Video/Color Signal Path Page 52
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MODEL: WL-82913 Control Circuitry Page 53
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MODEL: WL-82913 Additional LCOS Command & Status Circuitry Page 54
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MODEL: WL-82913 Audio Circuitry Page 55
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MODEL: WL-82913 Page 56