Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
This service manual provides service instructions for projection TV models WS-55517, WS-65517 and WS-73517
using the V27 chassis. Service personnel should read this manual thoroughly before servicing these chassis.
This service manual includes:
1. Assembly and disassembly instructions for the front and rear cabinet components.
2. Servicing of the Lenticular Screen and Fresnel Lens.
3. Servicing printed circuit boards (PCBs).
4. CRT replacement procedure.
5. Electrical adjustments.
6. Chip parts replacement procedures.
7. Circuit path diagrams.
The parts list section of this service manual includes:
1. Cabinet and screen parts.
2. Electrical parts.
Schematic and block diagrams of the above listed models are included in this service manual for better understanding of the circuitry. PCB drawings are also included for easy location of parts and test points.
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in television receivers have special safety related characteristics. These
characteristics 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 parts which have special safety characteristics are identified in this service manual.
Electrical components having such features are identified by shading
type in the parts list of this service manual. The replacement for any safety part should be identical in value
and characteristics.
on the schematic diagram and by bold
Page 5
Page 6
MODELS:WS-55517 / WS-65517 / WS-73517
SAFETY PRECAUTIONS
NOTICE:Observe all cautions and safety related notes located inside the receiver cabinet and on the
receiver chassis.
WARNING:
1.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.
2.Do not install, remove or handle the picture tubes in any manner unless shatterproof goggles are
worn. People not so equipped should be kept away while the picture tube is being handled. Keep
the picture tube away from the body while handling.
3.When service is required, observe the original lead dress. Extra precaution should be taken to
assure correct lead dress in the high voltage area. Where a short-circuit has occurred, replace those
components that indicate evidence of overheating.
X-Radiation warning
The surface of the cathode ray tubes (CRTs) may generate X-Radiation, so take proper precautions when servicing. It is recommended that a lead apron be used for shielding while handling the CRT. Use this method if
possible.
When replacing the CRTs, use only the designated replacement part since it is a critical component with regard to
X-Radiation. High voltage must be set as prescribed under the section titled Electrical Adjustments.
Leakage current check
Before returning the receiver to the customer, it is recommended that leakage current be measured according to
the following methods.
1. Cold Check
With the alternating current (AC) plug removed from the AC source, place a jumper across the two AC plug
prongs. Connect one 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 1Meg Ohm. Any resistance below this value
indicates an abnormal condition and requires corrective action.
2. Hot Check ...Use the circuit shown below to perform the hot check test.
1. Keep switch S1 open and connect the receiver to the measuring circuit. Immediately after
connection, and with the switching devices of the receiver in their operating positions, measure
the leakage current for both positions of switch S2.
2. Close switch S1, energizing the receiver. Immediately after closing switch S1, and with the
switching devices of the receiver in their operating positions, measure the leakage current for both
positions of switch S2. Repeat the current measurements of items 1 and 2 after the receiver has
reached thermal stabilization. The leakage current must not exceed 0.5 milliampere (mA).
4. Remove screws (c) from the Screen Assembly (WS-65517 & WS-73517 only)
5. Unplug the CC, ZF and GR connectors from the Control Panel.
6. Lift the Screen Assembly up and away from the cabinet.
Page 7
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MODELS:WS-55517 / WS-65517 / WS-73517
CABINET DISASSEMBLY (REAR VIEW)
*Refer to the Parts List for Part Numbers
Rear Cabinet Disassembly
1. Remove the Back Board by removing screws (a), and screws (b).
2. Remove screws (c) to remove the Board Slide.
3. Remove screws (d) to remove the Board Shelves.
4. Remove screw (e) holding the chassis.
5. Remove 4 screws (f) securing the Light Box Assembly.
6. Be certain that all cables and connectors between the Light Box Assembly and external items are
disconnected (e.g. speaker plugs, etc.), including the USB and 1394 connectors.
7. Slide the Light Box Assembly from the cabinet.
Page 8
Page 9
MODELS:WS-55517 / WS-65517 / WS-73517
SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS
WS-55517 / WS-65517 / WS-73517
CAUTION:Wear gloves when handling the Lenticular 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.
1b. Lenticular Screen and Fresnel Lens Removal
1. Remove the screen assembly as shown in the Cabinet Disassembly procedure.
2. Remove the Screen Frame top section by removing 4 screws (a).
3. Carefully grasp the Lenticular Screen and Fresnel Lens combination, and pull upward and out of the Screen
Frame Assembly.
Note: When separating the Lenticular Screen from the Fresnel Lens, use caution
while prying the Screen and Lens apart. Use a slot type screw driver, and
remove the pressure sensitive double sided tape.
(Rear V iew)
Page 9
Page 10
MODELS:WS-55517 / WS-65517 / WS-73517
g
SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS
2.Lenticular Screen and Fresnel Lens Installation.
Note: Store the Lenticular Screen and Fresnel Lens in a cool dry place. High humidity may
deform the Lenticular Screen and Fresnel Lens.
1. Apply double coated tape (Part # LENS-TAPE) along the top front edge of the Fresnel Lens
as shown below. Refer to the Table below for proper tape length.
2. Place the Fresnel Lens on top of the Lenticular Screen and apply pressure at the top edge
to bond them together as shown below.
The appropriate disassembly procedure given below.
Note: Wear gloves when handling the DiamondShield™ to prevent finger prints.
1. Gently insert a small plastic card (such as a credit card or a
plastic putty knife) between the Diamond Shield
the clip to pry the clip loose.
2. From the edge of the trim, pull the brackets outward to open like
a hinge.
3. Carefully insert the small plastic card (or plastic putty knife) into
the gap at the side/center point of the Shield and pull the Shield
slightly away from the unit. Place your hands at the points
shown and gently bow the Shield toward you and remove from the
unit.
TM
and one end of
4. Close the two trim brackets at the sides.
2.DiamondShield™ Installation Procedure
To install the DiamondShieldTM, reverse the above Removal Procedure.
*(See the Parts List for DiamondShield™ part numbers)
Page 11
Page 12
MODELS:WS-55517 / WS-65517 / WS-73517
CABINET SEPARATION PROCEDURE
WS-65517 / WS-73517
Cabinet Separation Procedure
1. Pull the Speaker Grill from the cabinet.
2. Unplug the CC, ZF and GR connectors.
3. Remove 4 plastic covers and screws (a)
from each side of the cabinet.
4. Carefully lift the cabinet top and place it on
the floor.
5. Place the cabinet bottom in the desired
location.
6. Reverse the procedure and mount the
cabinet top on the cabinet bottom.
Main Chassis Removal
Chassis Removal
1. Undo the cable wire ties to the Front Panel, Speakers, CRTs, etc.
2. Unplug the 1394 cables from the DM module.
2. Remove screw (a) securing the Main Chassis.
3. Release the Chassis Locks on each side of the chassis.
4. Slide the Chassis out the rear of the unit.
5. Tilt upward to access the bottom of the main chassis.
Page 12
Page 13
MODELS:WS-55517 / WS-65517 / WS-73517
PCB Locations
Main Components Location (Top View)
(DM Fan & Bracket Removed)
Page 13
Page 14
MODELS:WS-55517 / WS-65517 / WS-73517
CRT REPLACEMENT
1. Removal of the CRT
Caution!High voltage should be completely discharged prior to CRT removal.
Since The CRTs receive high voltage from the HV Block, discharge
by shorting the open end of the respective high voltage cable to
chassis ground.
Note: Refer to the Cabinet Disassembly Procedures when performing steps 1 through 4.
1. Remove the Speaker Grille, Front Board, and Screen Assy.
2. Remove the Back Board.
3. Remove the Anode Lead Wire from the CR Block.
4. Remove the PCB-CRT.
5. Remove 4 hex-screws "a" retaining the Optical Unit. [Figure 5-1]
6. Remove 4 screws "b" retaining the Lens.
Note: DO NOT loosen the RED screws. Doing so will break the seal between the
C-Element and the # 6 Lens, causing leakage of the CRT Coolant.
7. Remove 4 screws "c" retaining the CRT. [Figure 5-2]
8. Remove the Deflection Yoke from the neck of the CRT. [Figure 5-7]
Figure 5-1
Figure 5-2
Note: The 4 spring-loaded screws shown
in Fig 5-2 and labeled as "DO NOT
REMOVE", should not be loosened
under any circumstance. Doing so
will break the seal between the
CRT and the CRT-Spacer, causing
leakage of the CRT Coolant.
Page 14
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MODELS:WS-55517 / WS-65517 / WS-73517
2. Installation of the CRT
Note: The replacement CRT is supplied as an assembly comprised of the CRT and the
Inner Lens with the space between them filled with ethylene glycol. Care should
be taken during handling and installation to prevent shock from disrupting the seal
or alignment between the CRT and Inner Lens. [Figure 5-3]
Figure 5-3
Note: The CRT fixing screws should not be loosened nor should they be removed. [Figure 5-4]
Figure 5-4
1. Carefully position the replacement CRT and fasten in place using 4 screws "d". [Figure 5-6]
Figure 5-6
Figure 5-5
Page 15
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MODELS:WS-55517 / WS-65517 / WS-73517
2. Install the Deflection Yoke on the CRT neck. [Figure 5-7]
3. Install the Lens that was removed in step 6 of Removal Of The CRT. [ Figures 5-1 and 5-2 ]
a) Position the Lens so that the Label faces the direction shown in Figure 5-8.
b) Install the mounting screws. [Figure 5-1]
4. Connect the PCB-CRT.
5. Insert the Optical Unit into the Light Box Assembly.
6. Insert the Anode Lead Wire into the Flyback Transformer.
7. Re-clamp the Lead Wire in its original position.
Figure 5-7
Adjustment procedures after replacing the CRT(s)
• CRT Cut Off / White Balance Adjustment
• Static Convergence Adjustment
• Dynamic Convergence Adjustment
Figure 5-8
Page 16
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MODELS:WS-55517 / WS-65517 / WS-73517
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)
• Frequency Counter
• Direct Current Voltmeter
• Direct Current Power Supply
• Multiplex Audio Signal Generator
• Direct Current Ampere Meter
Test Signal
A. Monoscope Signal
Note: If you do not have
a monoscope signal source,
connect the unit to a VCR
and play a Monoscope
*alignment tape.
(* Part Number: 859C568060)
B. Color Bar Signal
Use the color bar signal shown
below, unless otherwise specified
in this manual.
100%
75%
40%
40%
Monoscope Signal
1H
Split-Field Color Bars (100% window)
Page 17
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MODELS:WS-55517 / WS-65517 / WS-73517
V
Initial Setup
A. Option Menu Setup
Follow the steps below for the initial set-up:
1. Select the "MENU" display by pressing the "MENU" button once.
2. Press the number buttons "2", "4", "7", "0" in sequence to select
the "OPTION MENU" display.
3. Press the "ADJUST" button to select "INITIAL."
4. Press "ENTER."
NOTE: At this time channel 3 is automatically selected.
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.
A/V Reset
1. The front panel AV Reset button initializes all A/V Memories.
2. The AV Reset in the user’s menu initializes only the selected input’s A/V Memory.
LED Indicator Diagnostics
The “Power ON LED” provides an indication of the sets operation, and the possible cause of a malfunction.
1. Initial Control Circuitry Check
Immediately after the TV is connected to an AC power source:
LED IndicationsConditionsProbable Cause
OffAfter AC is appliedNo Standby Power or TV µPC not running
Fast Blink for 70 sec.After AC is appliedNormal - DM µPC is booting up.
Fast Blink (Doesn't stop)After AC is appliedTV µPC is running, but DM failed to boot up
Slow BlinkSet is OffNormal - Timer is set for Auto Trun On
2. Error Code Operational Check
Note: The TV must be in “Shut Down” and not have been switched Off, to perform the Error Code Opera-
tional Check. When the TV is switched Off, the code automatically resets to “12” No Error.
Pressing the front panel “INPUT” and “MENU” buttons at the same time, and holding for 5 seconds,
activates the Error Code Mode. The LED flashes denoting a two digit Error Code, or indicating no problem
has occurred since the last Initialization.
Note: The front panel buttons must used, NOT those on the Remote Control.
• The number of flashes indicates the value of the MSD (tens digit) of the Error Code.
• The flashing then pauses for approximately 1/2 second.
• The LED then flashes indicating the value of the LSD (ones digit) of the Error Code.
• The Error Code is repeated a total of 5 times.
Example: If the Error Code is “23”, the LED will flash two times, pause, and then flash three
times.
3. Error Codes
The Error Code designations indicating malfunction, or no malfunction, are listed below:
Error Code Probable Cause
12No error detected
21X-Ray Protect
22Short Protect
23Loss of Deflection
Remote Control Operational Modes
There are two Remote Hand Unit Operational Modes, “Standard” and “NetCommandTM”. The Remote is initially
in the “Standard” mode. The “NetCommandTM” mode is used when controlling Home Theater devices using
NetCommandTM. To change the Remote Operational Mode:
• Set the Remote to the TV Layer
• Point the Remote away from the TV.
• To change to “Netcommand
TM
” ... Hold the “Power” button and press “9-3-5” in sequence.
• To change to “Standard” ... Hold the “Power” button and press “0-0-0” in sequence.
Page 19
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MODELS:WS-55517 / WS-65517 / WS-73517
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. When
adjustments are complete, set the Remote to its’ original Operational Mode.
(Hold the “Power” button and press “0-0-0” in sequence)
A. Activating the Circuit Adjustment Mode
The current signal source determines if the
activated Adjustment Mode is 480i or 1080i.
1. Select the signal source (480i or 1080i).
2. Press the "MENU" button on a remote hand unit.
3. Press the number buttons "2, "4", "5", "7" in sequence. The screen will
change to the Adjustment Mode.
Note: Repeat steps 1 and 2 if the circuit
adjustment mode does not appear
on screen.
CHASSIS
FUNCTION
ADJ ITEM
ISF
MMTX
15YDRM 5480i
ABBREV.DATA
SIGNAL
B. Selection of adjustment Functions and Adjustment Items
To select an adjustment item in the circuit adjustment mode, first select the adjustment function that includes
the specific adjustment item to be selected. Then select the adjustment item. Refer to the following pages for
the listing of adjustment functions and adjustment items.
1. Press the "AUDIO" button on a remote hand unit to select an adjustment function. Each time the button
is pressed, the Function changes in the following sequence:
CRT_JUNGLAD9883A
SMTXMMTX
Adjustment Functions
2. Press the “VIDEO” button to select a specific Adjustment Item. The Item number increases each time the
“VIDEO” button is pressed.
CRT_VC
C. Changing Data
After selecting an adjustment Item, use the “ADJUST UP/DOWN” buttons to change data.
•Press “ADJUST DOWN” to decrease the data value.
•Press “ADJUST UP” to increase the data value.
D. Saving Adjustment Data
Press “ENTER” to save adjustment data in memory. The character display turns red for approximately one
second in this step.
Note: If the circuit adjustment mode is terminated without pressing “ENTER”, changes in adjustment data
are not saved.
Page 20
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MODELS:WS-55517 / WS-65517 / WS-73517
A
A
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. Toggle Between Reception Modes
Pressing “3” when in the Adjustment Mode CRT-VC Function toggles between 480i, 480p, 1080i and VGA.
However data changes are not automatically saved. Press “ENTER” to save data before pressing “3”.
G. Service Mode Reset
To reset items in the Service Mode to their factory values:
1. Press MENU-2-4-5-7 to enter the Service Mode.
2. Press the “0”.
3. Select “Restore Backup”
4. Press “”ENTER”
On Screen Display Position Adjustment Mode
Activation
1.Select 480i or 1080i source.
2.Press MENU-2-4-8-8
Convergence Adjustment Mode
The Convergence mode is used to perform raster geometry
correction, and convergence adjustments. These adjustments must be made in both the SD (NTSC) and HD modes.
Note: Before activating the Convergence mode, turn
“Video Mute” Off. The internal crosshatch pattern
will not be displayed with “Video Mute” On, only a blue
background is displayed.
A. Convergence Mode Activation
1.Press MENU-2-4-5-9
2.When the Convergence Mode is activated, this display appears on a Green Crosshatch.
"MENU-2-4-5-7-0"
Restore Backkup
UPLOAD TERMINAL BOARD DAT
convMCOARSE GREEN
0HST
00
ITEMABREVDATA
NO.
B. Selecting the HD or SD Mode
1.Select the Signal Source before entering the
Convergence Mode, either an NTSC or HD source.
2.Enter the Convergence Mode
• If the signal source is NTSC, the SD mode is activated.
• If the signal source is HD, the HD mode is activated.
3.Activating the HD mode when no HD signal is available
• Press the “DEVICE” button.
• Use the “UP-DOWN-RIGHT-LEFT” direction buttons to select the ANT-DTV, then press “ENTER”.
• Press “MENU-2-4-5-9-5” in sequence to activate the Coarse Green HD Convergence mode.
C. Convergence Mode Functions
In the Convergence Mode there are three main Functions (Categories).
• Pressing “6” activates CONV MISC
• Pressing “5” activates COARSE CONV
• Pressing “4” activates FINE CONV
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MODELS:WS-55517 / WS-65517 / WS-73517
D. CONV MISC (Press 6)
This mode is used to preset data values controlling the Convergence Generator, and to perform the HV
Regulation adjustment.
1. Use the VIDEO button to select an item.
2. Use the ADJUST buttons to change data.
NOTE: When Item “1 HVOL” is selected the screen goes black except for the data display. This occurs
since a black screen is required when making the HV Regulation adjustment.
E. COARSE CONV (Press 5)
There are four Sub Functions in the Coarse mode, COARSE GREEN, COARSE RED, COARSE BLUE and
DF.
• COARSE GREEN .... used to make Coarse Raster Geometry Adjustments.
• COARSE RED ... used to make Coarse Red Convergence Adjustments.
• COARSE BLUE ... used to make Coarse Blue Convergence Adjustments.
• DF ... used to preset data values controlling the Dynamic Beam Focus circuit drive signal.
1. Use AUDIO button to select a Sub Function
2. Use the VIDEO button to select an Adjustment Item.
3. Use the ADJUST buttons to change data.
F. FINE CONV (Press 4)
Sub Functions
This mode is used to perform Fine Raster Correction, and Fine Red and Blue Convergence Adjustments.
There are three Sub Adjustment Functions, selected with the AUDIO button:
• FINE GREEN .... a Green Crosshatch is displayed, to make Fine Raster Corrections.
• FINE RED .... a White Crosshatch is displayed, to make Fine Red Convergence Adjustments.
• FINE BLUE .... a White Crosshatch is displayed, to make Fine Blue Convergence Adjustments.
Cursor
In the Fine mode a Cursor is added to the Crosshatch. The ENTER button toggles the Cursor between two
modes:
• MOVE (blinking Cursor) .... use the ADJUST buttons to select any of 64 points on the Crosshatch.
• ADJUST (Non blinking Cursor) .... the ADJUST buttons adjust the active color at the current Cursor
position, horizontally or vertically.
Display
The on-screen display changes in the Fine mode, as shown at the right.
The display shows the vertical and horizontal data for the current Cursor
Position, and the horizontal and vertical coordinates for that position.
G. Saving Data and Exiting the Convergence Mode
Press MENU twice to exit the Convergence mode, data is automatically saved.
Page 22
V27
CONV FINEGREEN
V13H-4 SD
VERTICAL
DATA
HORIZ.
DATA
Page 23
MODELS:WS-55517 / WS-65517 / WS-73517
E2PROM Replacement
Data accessed in the Convergence Adjustment Mode is stored in IC8D01on the PCB-SIGNAL. Replacement
PCB’s are supplied pre-aligned so that only fine adjustments should be necessary after replacement. All other
service data is stored on the PCB-E2P located on the DM assembly. When replacing the DM assembly,
retaining the original PCB-E2P will eliminate the need for any realignment. The following tables are provided as
a guide in case of total data loss.
9VLINVertical Linearity000000
10TPPCTop/Bottom PC Correction202020202020
11SDBWHorizontal Side Bow303030303030
*HSTA and VSTA must not exceed ±200
WS-65517 WS-55517
WS-73517
CONV BLUE Items(MENU-2-4-5-9-5)
No. Abbrev.Description
NameSDHDSDHDSDHD
1HSTAHorizontal Position-50-50-50-50-100 -100
2VSTAVertical Position000000
3SKEWSkew (Y axis rotation)000000
4TILTTilt (X axix rotation)000000
5HLINHorixontal Linearity180180180160230200
6HWIDHorizontal Width000000
7VKEYVertical Keystone Correction100100100707090
8VWIDVertical Height000000
9VLINVertical Linearity000000
10TPPCTop/Bottom PC Correction-20-20-20-20-20-20
11HSBWHorizontal Side Bow-30-30-30-30-30-30
*HSTA and VSTA must not exceed ±200
Page 25
WS-73517WS-55517WS-65517
Page 26
MODELS: WS-55517 / WS-65517 / WS-73517
Adjustment Test Point Location
Test Points
DT pin 3 - HV Adjust
DT pin 6 - Ground
DT pin 7 - 12 Volts
DT pin 8 - ACL
JA pin 25 - Main Picture (Y)
JA pin 29 - Main Picture (Cr)
JA pin 40 - Sub Picture (Y)
JA pin 44 - Sub Pictur (Cr)
TP6(R, G or B) - CR T Cathode
Page 26
Page 27
MODELS: WS-55517 / WS-65517 / WS-73517
A
[HV Circuit]
1. HV Regulation
Purpose:
Symptom:
To set the CRT Anode voltage.
Dark Picture
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
DC Voltmeter
DT connector pins 3 & 6
------
-------
Video Signal
Monoscope
Video Input
Note:This adjustment must be rechecked following Adjustment 9 CRT Cutoff.
1. Supply a video monoscope signal.
2. Sent Contrast to maximum, and Brightness to mid position.
3. Connect a DC volt meter between pins 3 and 6 of the DT connector.
(Positive lead to pin 3)
4. Activate the Conv-Misc Mode.
5. Select Item “1 HVOL” (screen goes black).
6. Adjust Item “1 HVOL” for 15.4V ±0.2V on the meter.
7. Save data and exit the Conv-Misc mode.
8. Confirm that the voltage does not change more than 0.15V.
Note: This adjustment must be performed if E2RESET or Convergence E2RESET
are activated.
CONVERGENCE M ODE
Activate … … ..MEN U-2-4-5-9
Misc. ……………….……"6"
Coarse………………..…."5"
Fine ……………………..."4"
Color (R,G or B)…… AUD IO
Item N o………… .… ..VIDEO
Adjust/Move……….ADJUST
Cursor Toggle….…..ENTER
Save & Exit…..MENU (twice)
[Video Circuit]
2. Main/Sub Y Level
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
Oscilloscope
JA connector pins 26 &35
------
------
Color Bars
Video Input
Purpose
Symptom:
To set picture luminance
Excess or insufficient brightness.
1. Supply a color bar signal to a Video Input (not an RF input).
2. Select the color bar signal for both the main and sub pictures.
3. Connect the oscilloscope to connector JA pin 25.
4. Activate the Adjustment Mode
5. Select Item “15 YDMR” in the MAIN MTRX function.
6. Adjust the data for 0.66 Vp-p min.- 0.71 Vp-p max. at JA pin 25.
(If it cannot be adjusted within this range, set to the lower value)
7. Move the oscilloscope to JA pin 40.
8. Select Item “15 YDRS” in the SUB MTRX function.
9. Adjust the data to equal the MAIN-Y Gain (+0.0V -0.05V).
CIRCUIT ADJ UST MO DE
ctivate …….. MENU-2-4-5-7
Functio n …...…… … ..AUDIO
Item No. ……….…….VIDEO
Adjust Data ….…….ADJUST
Save Data …. ………ENTER
Exit …………..MENU (twice)
Page 27
Page 28
MODELS: WS-55517 / WS-65517 / WS-73517
A
A
[Video Circuit]
3. Main/Sub Color Level
Purpose:
Symptom:
To match the sub picture color to that of the main picture.
Main and sub pictures colors differ.
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
ctivate …….. MENU-2-4-5-7
Functio n …...…… … ..AUD IO
Item No. ……….…….VIDEO
Adjust Data ….…….ADJUST
Sa ve D ata …. … … … EN TE R
Exit …………..MENU (twice)
Oscilloscope
JA pin 29 & JA pin 37
JB pin 5
------
------
Color Bars
Video
CIRCUIT ADJ UST MO DE
1. Supply an NTSC signal to an External Video Input.
2. Select the NTSC signal as the source for both the main and sub pictures.
3. Connect an oscilloscope to connector JA pin 29 (Main Pr).
4. Activate the Adjustment mode.
5. Select Item “04 COLM” in the Main Matrix Function.
6. Adjust data so the PR signal is 0.66 Vp-p min. - 0.71 Vp-p max.
(If it cannot be adjusted within this range, set to the lower value)
7. Connect an oscilloscope to connector JA pin 44 (Sub Pr).
8. Select item “04 COLS” in the Sub Matrix Function.
Monochrome has a color tint, or incorrect brightness.
Note: Use the Expand mode (full screen)
1. Select an External Input with no signal.
2. Enter the Adjustment Mode, VC Function.
3. Press “1”, automatically blanks the screen and sets COL to 0.
Note: If the screen goes blue, turn off Video Mute.
4. Set the data to the values given in the table below.
5. Connect the oscilloscope to TP6R.
6. Adjust the Red Screen VR so the black level is 175V, as shown below, or
179V ±1VDC using an DC Voltmeter.
7. Repeat Steps 4 and 5 to set the Blue and Green Screen VRs, using
TP6G and TP6B.
Note: White Balance must be performed
after this adjustment.
CIRCUIT ADJ UST MO DE
ctivate …….. MENU-2-4-5-7
Functio n …...…… … ..AUD IO
Item No. ……….…….VIDEO
Adjust Data ….…….ADJUST
Sa ve D ata …. … … … EN TE R
Exit …………..MENU (twice)
Page 28
Page 29
MODELS: WS-55517 / WS-65517 / WS-73517
A
A
[CRT Circuit]
5. White Balance (NTSC)
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
DC ma meter
------
------
------
NTSC White Raster
RF or Video
Purpose:
Symptom:
To set the CRTs white level in the NTSC mode.
Monochrome has a color tint.
Note: Use the “FORMAT” button to activate the Expand mode (full screen).
1. Supply a full White Raster Signal
2. Activate the Service Mode, VC function.
3. Adjust Items “4 RDRH” and “6 BDRH” for optimum white at the center of
the screen.
4. Reduce the input luminance level to 25%.
5. Adjust Items “7 CTRH” and “9 CTBH” for optimum white.
6. Insert a Milliammeter in series with each CRT Cathode. The maximum
allowable current for each CRT is given in the table below.
7. Set the white raster to 100% and adjust Items “10 RDRL” and “12 BDRL” for
optimum white at the center of the screen.
8. Reduce the luminance level to 25%.
9. Adjust Item “13 CTRL” and “15 CTBL” for optimum white.
10. Set the data for Item “19 COL” back to 31.
CIRCUIT ADJ UST MO DE
ctivate …….. MENU-2-4-5-7
Functio n …...…… … ..AUD IO
Item No. ……….…….VIDEO
Adjust Data ….…….ADJUST
Sa ve D ata …. … … … EN TE R
Exit …………..MENU (twice)
[CRT Circuit]
6. White Balance (HD)
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
-----
-----
------
-----
HD White Raster
DTV Inputs
Maximum CRT Current
CRT
WS-55517
WS-65517
WS-73517
RED580ua900ua
GREEN580ua900ua
BLUE580ua900ua
Purpose
Symptom:
1. Supply an HD Full White Raster signal to the DTV Inputs.
2. Select the DTV Inputs (Input button)
3. Activate the Adjustment mode, VC Function.
4. Set Item “19 COL” to 0.
5. Adjust Items “4 RDRH” and “6 BDRH” for optimum white at the center of the
screen.
6. Reduce the input signal luminance to 25%.
7. Adjust Items “7 CTRH” and “9 CTBH” for optimum white.
8. Set the data for Item “19 COL” back to 31.
To set the CRTs white level in the HD mode.
Monchrome pictures have a color tint.
CIRCUIT ADJ UST MO DE
ctivate …….. MENU-2-4-5-7
Functio n …...…… … ..AUD IO
Item No. ……….…….VIDEO
Adjust Data ….…….ADJUST
Sa ve D ata …. … … … EN TE R
Exit …………..MENU (twice)
Page 29
Page 30
MODELS: WS-55517 / WS-65517 / WS-73517
A
A
[Video Circuit]
7. Black Level
Purpose:
Symptom:
To set the black level of the picture.
Excess or insufficient brightness.
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
CIRCUIT ADJ UST MO DE
ctivate …….. MENU-2-4-5-7
Functio n …...…… … ..AUD IO
Item No. ……….…….VIDEO
Adjust Data ….…….ADJUST
Sa ve D ata …. … … … EN TE R
Exit …………..MENU (twice)
-----
-----
------
------
Monoscope
Video Input
1. Supply a Monoscope signal to a Video Input.
2. Activate the Adjust Mode, VC Function.
3. Adjust Item “1 SBRT” so the 0% and 10% black levels on the gradation scale
are the same.
4. Press ENTER to save data.
7. Exit the Service Mode.
40% 30% 20% 10%
50% 0%0%0%
60% 70% 80% 90%
GRADATION SCALE
[Video Circuit]
8. Sub Contrast
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
ctivate …….. MENU-2-4-5-7
Functio n …...…… … ..AUD IO
Item No. ……….…….VIDEO
Adjust Data ….…….ADJUST
Sa ve D ata …. … … … EN TE R
Exit …………..MENU (twice)
DC ma meter
DT connector pins 7 & 8
------
-----
Grayscale
RF Input
CIRCUIT ADJ UST MO DE
Purpose
Symptom:
To set overall beam current to its’ optimum level.
Excess or insufficient contrast.
Note: Activate the Expand mode (full screen).
1. Supply a Grayscale signal to a RF Input.
2. Activate the Adjust Mode, VC Function.
3. Select Item “2 SCT”, signal level automatically reduces.
4. Connect a 3ma DC meter between DT connector pins 7 and 8. Positive lead to
pin 7.
5. Adjust Item “1 SCT” to the values given in the Table below.
MODELCURRENT
WS-55517480 ±ua
WS-65517 & W S-73517525 ±ua
6. Remove the meter.
7. Save data and Exit the Service Mode.
Page 30
Page 31
MODELS: WS-55517 / WS-65517 / WS-73517
[Focus Circuit]
Purpose:
To improve edge focus.
9. Dynamic Focus Preset
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
-----
-----
------
-----
Monoscope
Video Input
CONVERGENCE M ODE
Activate … … ..MEN U -2-4-5-9
Misc. ……………….……"6"
Coarse………………..…."5"
Fine ……………………..."4"
Color (R,G or B)…… AUD IO
Item N o………… .… ..VIDE O
Adjust/Move……….ADJUST
Cursor Toggle….…..ENTER
Save & Exit…..MENU (twice)
Symptom:
Poor focus at the edges of the screen.
1. Supply a Monoscope signal to a Video Input
2. Activate the Convergence Mode.
3. Select the DF Function under the Conv. Coarse Mode.
4. Set Items “1 DFH” and “2 DFV” to the data values given in the DF Table.
ctivate …….. MENU-2-4-5-7
Functio n …...…… … ..AUD IO
Item No. ……….…….VIDEO
Adjust Data ….…….ADJUST
Sa ve D ata …. … … … EN TE R
Exit …………..MENU (twice)
Activate … … ..MEN U -2-4-5-9
Misc. ……………….……"6"
Coarse………………..…."5"
Fine ……………………..."4"
Color (R,G or B)…… AUD IO
Item N o………… .… ..VIDE O
Adjust/Move……….ADJUST
Cursor Toggle….…..ENTER
Save & Exit…..MENU (twice)
Page 33
Page 34
MODELS: WS-55517 / WS-65517 / WS-73517
A
[Deflection Circuit]
14: Deflection Geometry
Height & Width Adjustment
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
CIRCUIT ADJ UST MO DE
ctivate …….. MENU-2-4-5-7
Functio n …...…… … ..AUD IO
Item No. ……….…….VIDEO
Adjust Data ….…….ADJUST
Sa ve D ata …. … … … EN TE R
Exit …………..MENU (twice)
-----
-----
------
-----
Monoscope (NTSC & HD)
Video & DTV Inputs
Purpose:
Symptom:
To set the height, width and linearity of the raster.
Incorrect height, width and/or linearity.
Note:
Always use the Standard Format when aligning Geometry and Convergence.
Preliminary:
1.
DO NOT change the initial values for “#8 VLIN” in the CRT Jungle Function.
2.
DO NOT exceed the following VHGT adjustment ranges:
NTSC ... from -4 to +10
HD ... from -10 TO +5
NTSC Mode
1. Supply an NTSC Monoscope signal to a Video Input.
2. Select the Monoscope as the signal source.
3. Activate the Adjustment Mode, CRT-JNGL Function.
4. Select and adjust each of the following items.
• “7 VHGT” ... so the vertical marker sum = 4
• “1 HWD” ... so the horizontal marker sum = 7
5. Save data and Exit the Service Mode.
HD Mode
1. Supply an HD Monoscope signal to the DTV HD Inputs.
2. Select the DTV Inputs as the signal source (Input button)
3. Activate the Service Mode, CRT JNGL Function.
4. Select and adjust each of the following items.
• “7 VHGT” ... so the vertical marker sum = 2
• “1 HWD” ... so the horizontal marker sum = 5
5. Save data and Exit the Service Mode.
Page 34
Page 35
MODELS: WS-55517 / WS-65517 / WS-73517
[Convergence Circuit]
15. Convergence Geometry
Adjustment
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
Activate … … ..MEN U -2-4-5-9
Misc. ……………….……"6"
Coarse………………..…."5"
Fine ……………………..."4"
Color (R,G or B)…… AUD IO
Item N o………… .… ..VIDE O
Adjust/Move……….ADJUST
Cursor Toggle….…..ENTER
Save & Exit…..MENU (twice)
-----
------
------
-----
NTSC -- None
HD -- HD sync
Video & DTV Inputs
CONVERGENCE M ODE
Purpose:
Symptom:
Note: Deflection Circuit Geometry must be performed before this adjustment.
Note:
Always use the Standard Format when aligning Geometry and Convergence.
NTSC mode
1. Select a Video Input with no signal.
2. Activate the Convergence Mode, Coarse Green.
3. Adjust the Coarse Green Items shown below for straight crosshatch lines.
4. Select the Fine Green Mode, a Cursor is displayed on the crosshatch.
5. Use the Cursor to adjust for straight crosshatch lines.
6. Exit the Convergence Mode.
HD mode
1. Supply an HD signal (sync only) to a Component input and select that
Component Input as the signal source.
2. Repeat NTSC Steps 2 through 6, in the HD mode.
3. Exit the Convergence Mode.
To set the Convergence circuit geometry adjustments.
Raster distortion at the top, bottom or sides of the picture.
Page 35
Page 36
MODELS: WS-55517 / WS-65517 / WS-73517
[Convergence Circuit]
16. Centering and Static
Convergence
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
Activate … … ..MEN U -2-4-5-9
Misc. ……………….……"6"
Coarse………………..…."5"
Fine ……………………..."4"
Color (R,G or B)…… AUD IO
Item N o………… .… ..VIDE O
Adjust/Move……….ADJUST
Cursor Toggle….…..ENTER
Save & Exit…..MENU (twice)
-----
-----
------
-----
NTSC -- Monoscope
HD -- Monoscope
Video & DTV Inputs
CONVERGENCE M ODE
Purpose:
Symptom:
To converge red, green and blue at the center of the screen
Color edging over the entire picture.
Preliminary
Degauss the shield cover and bracket unit of the CRT assembly and chassis.
DO NOT degauss the CPM Assemblies.
CAUTION:
Do Not adjust the Alignment Magnets instead of the Centering Magnets.
NOTE: Confirm that Item #13 HPOS, in the CRT-DEFL function of the MENU-2-4-5-7
Adjustment mode is set to the following values:
HD=34
SD=23
HD mode (The following steps must be performed in the HD mode)
1. Supply an HD Monoscope signal to the DTV Inputs.
2. Select the DTV Inputs as the signal source (Input button).
3. Enter the Convergence Coarse mode.
4. Set the data for the “HSTA” and “VSTA” items to:
• Center the Green Raster using the Green Centering Magnet.
• Rotate the Green Deflection Yoke to correct any tilt.
6. In the Coarse Red mode, use the Red Centering Magnet to converge
red on the green at the center of screen. Correct any red tilt with the Red
Deflection Yoke.
7. In the Coarse Blue mode, repeat Step 6 using the Blue Centering magnet and
the Blue Deflection Yoke.
8. Exit the Convergence mode.
SD mode
1. Supply an NTSC Monoscope signal to a Video Input.
2. Select the Monoscope as the signal source (Input button).
3. Enter the Convergence Coarse Green mode.
4. Confirm that the Green Raster is centered.
Page 36
Page 37
MODELS: WS-55517 / WS-65517 / WS-73517
[Convergence Circuit]
17. Coarse Convergence
Purpose:
Symptom:
To converge red and blue on green at the edges of the
screen.
Color edging at the top, bottom and sides of the screen.
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
CONVERGENCE M ODE
Activate … … ..MEN U -2-4-5-9
Misc. ……………….……"6"
Coarse………………..…."5"
Fine ……………………..."4"
Color (R,G or B)…… AUD IO
Item N o………… .… ..VIDE O
Adjust/Move……….ADJUST
Cursor Toggle….…..ENTER
Save & Exit…..MENU (twice)
-----
------
------
-----
NTSC -- None
HD -- HD sync
Video & HD Inputs
Note:
Always use the Standard Format when aligning Geometry and Convergence.
SD mode
1. Select an External Input with no signal.
2. Activate the Convergence Mode, Coarse Red.
3. Adjust the Items shown below to converge the red on the green.
4. Select Coarse Blue mode.
5. Adjust the Items shown below to converge the blue on the green.
Note: If center convergence shifts, use red and blue Items “1 HSTA” and
“2 VST A” to correct the shif t.
6. Exit the Convergence Mode.
HD mode
1. Supply an HD signal (sync only) to a Component input and select that
Component Input as the signal source.
2. Repeat SD Steps 2 through 6, in the HD mode.
3. Exit the Convergence Mode
Page 37
Page 38
MODELS: WS-55517 / WS-65517 / WS-73517
[Convergence Circuit]
18. Fine Convergence
Purpose:
Symptom:
To converge red, green and blue at the edges of the screen
Color edging at the edges of the picture.
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
CONVERGENCE M ODE
Activate … … ..MEN U -2-4-5-9
Misc. ……………….……"6"
Coarse………………..…."5"
Fine ……………………..."4"
Color (R,G or B)…… AUD IO
Item N o………… .… ..VIDE O
Adjust/Move……….ADJUST
Cursor Toggle….…..ENTER
Save & Exit…..MENU (twice)
-----
-----
------
-----
NTSC -- None
HD -- HD sync
Video & DTV Inputs
Note:
Always use the Standard Format when aligning Geometry and Convergence.
SD Fine Adjustment
1. Select an External Input, no signal.
2. Activate the Convergence Mode, Fine Red.
3. Use the Cursor to converge red on the green.
4. Select the Fine Blue mode.
5. Use the Cursor to converge blue on the green.
6. Exit the Convergence mode.
HD Fine Adjustment
1. Supply an HD signal (sync only) to a Component input and select that
Component Input as the signal source.
2. Repeat SD Fine Adjustment Steps 2 through 6, in the HD mode.
3. Exit the Convergence Mode.
Page 38
Page 39
MODELS: WS-55517 / WS-65517 / WS-73517
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.Do not apply heat for more than 3 (three)
seconds to new chip parts.
5.Avoid using a rubbing stroke when soldering.
6.Take care not to scratch, or damage the chip
parts when soldering.
7.Supplementary cementing is not required.
Chip Parts Removal (Resistors, Capacitors, etc.)
1.Grasp the part with tweezers. Melt the solder
at both sides alternately, and remove one side
of the part with a twisting motion.
2.Melt the solder at the other side and remove
the part.
Chip Parts Removal (Transistors)
1.Melt the solder of one lead and lift the side of
that lead upward.
2.Simultaneously melt the solder of the other
two leads and lift the part from the PCB.
Replacement
1.Presolder the contact points on the circuit
pattern.
2.Press the part downward with tweezers and
apply the soldering iron as shown.
PAGE 39
Page 40
MODELS: WS-55517 / WS-65517 / WS-73517
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 (*).
Parts Tolerance Codes
Refer to the following chart for tolerance characteristics of electrical components.
IC4B01 270P261020 IC - TDA8177
IC5A00 267P163010 HIC - MSPAD401
IC5A01 271P068010 IC - LM324AD
IC5A02 271P067010 IC - LM339AD
IC5A03 270P704010 IC - LM4040BIZ-10.0
IC5A04271P062010IC - BA9759F
IC6B01 270P667010 IC - TDA6120Q
IC6G01 270P667010 IC - TDA6120Q
IC6R01 270P667010 IC - TDA6120Q
IC7A00 276P087010 IC-C-MOS - M306V7MG-086FP
STK6G1 449C141030SOCKET-CRT
J2000452C410010CONNECTOR-HDMI
J2J21452C401010CONNECTOR-USB
J2J22451P246010JACK-1394 - MINI
J8202452C401010CONNECTOR-USB
J8301440C393030PIN-JACK-BOARD-1P
J8402451P246010JACK-1394 - MINI
J8403451P246010JACK-1394 - MINI
PROJECTION TELEVISION
V25 / V25+ / V25++ / V27 CHASSIS
V25 MODELS
WS-48515
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in Part 1 of this manual.