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Ser vice
2005
Manual
MITSUBISHI ELECTRIC
LCD PROJECTION HDTV
V28 CHASSIS
V28 Chassis V28+ Chassis
WD-52327 WD-52527 WD-52528
WD-52527 WD-62527 WD-62528
Pb Solder
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
SPECIFICATIONS
· Power Input : AC 120V, 60Hz · Input Level : VIDEO IN JACK (RCA Type)
· Power Usage : 295W 1.0Vp-p 75W unbalanced
· Light Engine : 3 LCD (1280 x 720 pixels) : AUDIO IN JACK (RCA Type)
· Light Source : 110W -4.7dBm 43kW unbalanced
· Channel Range : Air VHF - 2~13, UHF - 14~69 : S-VIDEO IN JACK
Analog Cable - 1~25 (Y/C separate type)
Digital Cable - 1~35 Y:1.0 Vp-p C:0.286Vp-p(BURST)
· Antenna Input : 2 RF 75 unbalanced 75W unbalanced
· Tuning : 1 NTSC/ATSC/QAM : COMP / Y, Cr, Cb (RCA Type)
1 Out of Band for CableCARDTM Y: 1.0 Vp-p Cr, Cb: 700mVp-p
1 NTSC for PIP
· Cabinet Dimensions : [WD-52527 / WD-52528] · Output Level : VIDEO OUT JACK (RCA Type)
34"(H) x 49.6"(w) x 17.8"(D) 1.0Vp-p 75W unbalanced
: WD-62527 / WD-62528 : AUDIO OUT JACK (RCA Type)
40.5"(H) x 58.3"(W) x 19.9"(D) -4.7dBm 4.7kW unbalanced
· Weight : [WD-52527 / WD-52528] · Digital : IEEE-1394 I/O Jacks
110 lbs : AC-3 Digital Audio Output
: [WD-62527 / WD-62528] (RCA Type)
133 lbs : HDMITM
· Speakers (8 Ohms 10W) Pb Solder : Lead-Free solder PWBs
: 2-5 ½ x 2 ¼ inch
· Design specifications are subject to change without notice.
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2005 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
.
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
CONTENTS
INTRODUCTION ................................................................................................................................ 5
PRODUCT SAFETY NOTICE ........................................................................................................... 5
SAFETY PRECAUTIONS ................................................................................................................. 6
DISASSEMBLY ................................................................................................................................. 7
Front Cabinet Components ............................................................................................................. 7
Chassis Removal ............................................................................................................................ 8
Chassis Disassembly / Accessing PWBs ..................................................................................... 12
Light Engine Replacement ............................................................................................................ 17
SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS ..................................................... 22
Removal of the Lenticular Screen and Fresnel Lens ...................................................................... 22
Installation of the Lenticular Screen and Fresnel Lens ................................................................... 24
ADJUSTMENTS ............................................................................................................................... 25
Option Menu & Defaults ................................................................................................................ 25
LED Indicator Diagnostics ............................................................................................................. 26
Error Codes Operational Check ..................................................................................................... 27
Remote Operational Mode ............................................................................................................ 28
Service Adjustment Mode ............................................................................................................. 28
Service Adjustment Mode Operation .................................................................................... 28
Transferring data .................................................................................................................. 29
Light Engine Adjustment ............................................................................................................... 30
Test Signal activation ........................................................................................................... 30
Preliminary .......................................................................................................................... 30
Trapezodial Distortion Adjustment ........................................................................................ 31
Rotation Adjustment............................................................................................................. 31
Hortizontal & Vertical Position.............................................................................................. 32
TROUBLESHOOTING .................................................................................................................. 33
MICRO / TERMINAL PWBs ................................................................................................. 33
POWER-PWB ..................................................................................................................... 34
OPTICAL ENGINE ............................................................................................................... 35
Protect Lines ....................................................................................................................... 36
USING LEAD FREE SOLDER .......................................................................................................... 37
CHIP PARTS REPLACEMENT ......................................................................................................... 38
REPLACEMENT PARTS .................................................................................................................. 39
Parts Ordering .............................................................................................................................. 39
Critical and Warranty Parts Designation........................................................................................ 39
Parts Tolerance Codes .................................................................................................................. 39
Quick Reference List .................................................................................................................... 40
SERVICE PARTS LIST .................................................................................................................... 41
SCREEN ASSEMBLY PARTS LIST .................................................................................................. 50
CIRCUITRY BLOCK DIAGRAMS ..................................................................................................... 52
Main Power Supply ....................................................................................................................... 52
Lamp Ballast DC Supply ............................................................................................................... 53
Page 3
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Fans Power Supply ....................................................................................................................... 53
Analog Video Signal Path ............................................................................................................. 54
Digital Video Signal Path .............................................................................................................. 55
Sound Signal Path ........................................................................................................................ 56
Command Input Circuitry ............................................................................................................... 57
Serial Data Control Lines .............................................................................................................. 57
Lamp Control Circuitry .................................................................................................................. 58
Shutter Control .............................................................................................................................. 58
Lamp, Engine and Fan's Protect circuitry ..................................................................................... 59
Page 4
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
INTRODUCTION
This service manual provides service instructions for LCD Projection TV Models and Chassis:
V28 Chassis V28+ Chassis
WD-52527 WD-52528
WD-62527 WD-62528
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 down to major components, chassis, PWBs, Light Engine, Lamp Ballast, etc..
4. Electrical adjustments.
5. Optical Adjustments.
6. Lead Free Soldering.
7. Chip parts replacement procedures.
8. Simplified circuit path diagrams.
The parts list section of this service manual includes:
1. Cabinet and screen parts.
2. Electrical parts.
Block diagrams of the above listed models are included in this 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 parts which have special safety characteristics are identified in this service manual.
Electrical components having such features are identified by shading on the schematic diagram and by bold type in
the parts list of this service manual. Therefore, the replacement for any safety part should be identical in value
and characteristics.
The PWBs used in the V28 and V28+ chassis are constructed using Lead-Free solder. When
Pb Solder servicing use only recommended Lead-Free solder (refer to page 37).
CableCARD is a trademark of Cable Television Laboratories, Inc.
TV Guide On Screen is a registered trademark of Gemstar Development Corp.
HDMI is a trademark of HDMI Licensing, LLC.
Page 5
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
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. 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.
WARNING ... RISK OF EYE INJURY
Do not look into the light source, lens or mirror when operating the TV
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).
Page 6
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
CABINET FRONT DISASSEMBLY
SPEAKER GRILLE Removal
Pull the SPEAKER-GRILLE away from the cabinet to remove.
SCREEN-ASSY Removal
1) Remove 10 screws (a) from the upper cabinet rear cover (3 screws on each side and 4 screws across the
top).
2) Remove screws (b) along the bottom of the SCREEN-ASSY (8 screws on 52 inch models, and 12 screws
on 62 inch models),
3) Unplug the LL connector to the front CONTROL-PANEL.
4) Lift the SCREEN-ASSY up slightly and then pull away from the cabinet.
Page 7
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
CHASSIS REMOVAL
BACK-COVER Removal
1) Remove 9 screws (a)
2) Remove 13 screws (b)
3) Pull the COVER-BACK from the cabinet.
Metal Support Plate Removal
Remove 4 screws (a) to remove the metal support plate,
(a)
Page 8
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Chassis Mounting Screws Removal
Remove the two chassis mounting screws (b).
(b)
(b)
Release Cable Clamps & Disconnect CE Connector
Cable CE Cable Cable
Clamp Connector Clamp Clamp
Page 9
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
On the right side of the chassis (from the rear):
1) Release the AC Cord from it's mounting.
2) Unplug ES1 connector to the speakers.
AC Cord ES1 Connector
Chassis removal from the Cabinet
Carefully rotate the chassis clockwise to slide it from the cabinet.
Page 10
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Complete Chassis Removal
To completely remove the chassis from the cabinet, the folowing connectors must be unplugged.
· PL plug to the Ballast (on the left side of the chassis).
· KA plug from the PWB-RISER (right side of chassis).
· FB, FC and J8F01 at the PWB-FORMAT (right side of chassis).
PL
FB
J8F01 FC
KA
Page 11
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Chassis Disassembly / Accessing PWBs
Note: Although not individually indicated, unplug the required connectors in each
disassembly step.
Chassis Sequence of Disassembly
REMOVE
Chassis Top Cover
(Fig. 1)
REMOVE
PWB-POWER
(Fig. 3)
REMOVE
Assy PWB-TERMINAL
(Fig. 2)
REMOVE
Chassis Top Shield
(Fig. 3)
REMOVE
Chassis Rear Shield
(Fig. 4)
REMOVE
PWBs MICRO / FMT/ RISER
(Figs. 5 & 6)
REMOVE
PWB-DM
(Fig. 7)
Page 12
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Chassis Cover Removal (Figure 1)
1) Remove the 4 screws (a).
2) Lift the Cover from the chassis.
Figure 1: Chassis Cover Removal
Assy PWB- TERMINAL Removal (Figure 2)
1) Remove 7 screws (a) to remove
the TERMINAL-INLAY.
2) Remove 3 screws (b) to remove
the Assy PWB-TERMINAL.
Figure 2: ASSY PWB-TERMINAL Removal
Page 13
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
PWB-POWER Removal (Figure 3)
1) Remove four screws (b).
2) Disconnect all connectors to PWB-POWER.
3) Lift PWB-POWER from the chassis.
Chassis Upper Shield Removal (Figure 3)
1) Remove seven screws (c).
2) Lift the Shield from the chassis.
Figure 3: PWB-POWER and Chassis Upper Shield
Page 14
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Chassis Rear Shield Removal (Figure 4)
1) Remove nine screw (c).
2) Remove two nuts (c1).
3) Pull off Chassis Rear Shield.
Figure 4: Chassis Rear Shield Removal
PWB-MICRO Removal
Referring to Figure 5.
1) Remove three screws (d).
2) Unplug PWB-MICRO from PWB-RISER
and remove from the chassis.
Figure 5: PWB-MICRO Mounting Screws
Page 15
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
PWB-RISER and PWB-FORMAT Removal
Referring to Figure 6.
1) Remove one screw (e).
2) Unplug and remove PWBs MICRO, RISER
and FORMAT.
Figure 6: PWBs MICRO, RISER and FORMAT Removal
PWB-DM Removal (Figure 7)
1) Remove three screws (g) holding the PWB-
MICRO Support Bracket.
2) Remove the Support Bracket.
3) Remove the five screws (h).
4) Remove the PWB-DM from the chassis.
Figure 7: PWB-DM Removal
Page 16
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Light Engine Replacement
Light Engine and Associated Components
The exploded view below shows the the Light Engine and those components attached directly to the Engine.
When replacing the Light Engine, these components must be removed from the original Light Engine.
NOTE: To replace the Lamp Bal-
last the Light Engine must be removed
from the cabinet but doesn't need
be completely disassembled.
Page 17
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Light Engine Replacement
Preliminary
Refer to the chassis removal procedure and remove the BACK-COVER and Metal Support Plate (page 8)
1) Remove (3) screws (a) from Filter Cover Holder
Light Engine Removal Procedure
The following steps describe how to remove the Light
Engine from the cabinet and those parts that are not
included in a replacement Engine (a)
(a)
(a)
Light Engine (Rear View)
3a) Loosen [A-1] & [A-2] so that they do not
2) Remove fixing screws (1) & (2) to remove touch [A-3]. (4MM Allen wrench)
the SLIDE-LOCK-MATE 3b) Loosen lock nuts (1) and (2). (8MM open
end wrench)
3c) Turn [A-3] CCW so the [A-3] bolt clears the
Engine Plate. (5MM Allen wrench)
Page 18
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Light Engine Replacement
5) Remove two screws (c) from Fan Plate and remove
4) Remove one screw (b) securing engine plate and base Fan Plate
(c) (c)
(b)
6) Disconnect all connectors 7) Remove DVI cable and (2) connectors
8) Remove wiring from three wiring clamps (d). 9) Remove 4 screws (f) from the Lamp Fan.
(d)
(d)
(d)
(f)
(f)
(f) (f)
Page 19
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
10) Remove (4) screws (g) from Lamp Fan Bracket 11 Loosen (2) screws (h) to remove Ballast Cable
(h)
(g)
(g)
(g) (g)
(h)
12) Disconnect all connectors from Interface PWB and
remove (2) screws (k) from Bracket 13) Remove (4) screws (n) from Intake Cover
(n)
(n)
(n)
(n)
(k)
(k)
14) Remove four screws (a), (b), (c) and (d) to separate
Light Engine from Engine plate Screw (c)
(a)
(b)
(c)
Page 20
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
15) Lift the Engine from Engine plate leaving the
Screw (d) Lamp Duct fan, Lamp Duct Intake and Ballast.
(d)
INSTALLATION
1) Reverse the above steps.
2) Copy White Balance Data to PWB-FMT (refer to page 29).
3) Refer to the Adjustment Section and perform Trapezodial Distortion, Rotation and
Position adjustments as necessary.
Page 21
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS
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.
Lenticular Screen and Fresnel Lens Removal
1. Remove the screen assembly as shown in the Cabinet Disassembly procedure.
2. Remove the four screws (a) to remove the bottom of the SCREEN-FRAME-BOTTOM . (Figure 1)
3. From the front of the screen assembly, slide the BEZEL out the bottom of the Screen Frame. (Figure 2)
4. From the rear of the screen assembly, carefully slide the Lenticular Screen and Fresnel Lens combination
from the Screen Frame. (Figure 3)
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.
Figure 1: SCREEN-FRAME-BOTTOM Removal (Rear View)
Page 22
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Figure 2: BEZEL Removal (Front View)
Figure 3: Lenticular Screen & Fresnel Lens Removal (Rear View)
Page 23
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS
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 rear edge of the Lenticular Screen, as shown
below. Refer to the table below for the tape length.
2. Sandwich the Fresnel Lens and Lenticular Screen together. The Lenticular Screen label must be towards
the front and the Fresnel Lens label towards the rear. (Figure 4)
3. Apply pressure at the top edge to bond the screens together.
4. Reverse the Screen Removal procedure and insert the screens in the Screen Frame Assembly.
Figure 4: Installing the Fresnel Lens & Lenticular Screen
*X INCHES - refer to the Tape Length in the table below
MODEL SCREEN SIZE TAPE LENGTH
WD-52527 55 inch 46.3 inches
WD-52528 55 inch "
WD-62527 65 inch 55.1 inches
WD-62528 65 inch "
Page 24
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
MENU-2-4-7-0
OPTION MENU OPTION MENU
Initializing
1. Press the "MENU" button on the remote hand unit. DTV Port :Auto
2. Press the buttons "2", "4", "7" and "0" in order. Direct Key Mode :Off
(The screen will change to the option menu.) NetCommand Software #####
Digital Signal Strength ##
#### #### #### #### ####
Total On Previous 3
Time Current Previous 1 Previous 2 Lamp
Lamp Lamp Lamp Life
Usage Life Life
Defaults After Initialization
Setup Menu V-Chip Lock Menu (Continued)
Language :English V-Violence :Enable
Combined Channel View -- Programs Not Rated :Enable
NetCommand Menu Moving Rating :PG
Edit -- V-Chip Time
Transport :On Start :12:00pm
Default Digital Record Device -- Time :12:00pm
Icon Order -- Lock By Time
Antenna Menu On/Off :Off
Antenna :1 Lock Time :12:00pm
Memorize -- Unlock Time :12:00pm
prefer Digital -- Front button Lock :Off
Channel :3 Audio/Video
Memory :Added A/V Reset :Ant-1
Name -- Audio
SQV -- Bass :50%
Time Menu Treble :50%
Clock Setting :Manual Balance :50%
Time Menu :12:00pm Surround :Off
Date -- Listen To (Analog Only) :Stereo
Time Zone -- Level Sound :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 Captions :On if Mute Color :50%
Appearance Tint :50%
Digital Settings Color Temp :High
Font :Font 3 Video Noise :Standard
Size :Large Film Mode (Auto) :On
Color :White DefinEdge :On
Background :Black Color Balance
Opacity :Translucent Video Mute :On
Backgroung Opacity :Translucent Black Enhancement :On
V-Chip Lock Menu TV Speakers :On
On/Off :Off TV Volume :30%
TV Rating :TV-PG PIP Source Ant 1 003
FV-Fantasy Violence :Enable PIP Position Lower Right
D-Sexual Dialog :Enable POP Position Right Half
L-Adult Language :Enable PIP/POP Format Double Window
S-Sexual Situations :Enable Format Stretch
Page 25
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
AV Reset Defaults
Input Com pone nt 1394 HDMITM
A/V Me m ory Ant 1&2
1/2/3 1/2/3* (if conn.) 1&2
TV Contra st Max Max Max Max Max
TV Brightne ss Center Center Center Center Center
TV Sha rpne ss Center Center Center Center Center
TV Color Center Center Center Center Center
TV Color Te m p. High High High High High
Vide o Noise Standard S tandard Standard N/A N/A
TV Film M ode (Auto) On On On N/A On
TV DefinEdge (VSM) On On On On On
TV Bass Center Center Center Center Center
TV Treble Center Center Center Center Center
TV Ba la nce Center Center Center Center Center
TV Surround Off Off Off Off Off
TV Liste d To Stereo N/A N/A N/A N/A
TV Leve l Sound On On On On On
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
1. The front panel AV Reset (pressing the "Guide" and "Format" buttons at the same time) 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 front panel LEDs provide an indication of the sets operation, and the possible cause of a malfunction. There
are three front panel LEDs, "Power", "Status" and "Lamp". Which LED is lit, the color and whether it is blinking or
steady indicate the current status, or a possible malfunction.
Normal LED Indications
POWER STATUS LAMP Power
Condition
LED LED LED Status
Off Off Off Stby Off
Green Off Off P-0N Power On
Blinks After Turn
Off Off Lamp Fan On for 1 minute
Green Off
Blinks
Off Off Stby Booting after AC applied
Green
Slow Blinks
Off Off Stby On Timer is set
Green
Page 26
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Abnormal LED Indications
POWER STATUS LAMP Power
Condition
LED LED LED Status
Low
Off Yellow Off Excess Temperature
Power
No
Off or On Off Yellow Usage time over 4000 Hrs.
change
Blinks Low
Off Off Lamp Cover open
Yellow Power
Blinks
Off Off " Filter Cover Open
Yellow
Off Off Red Stby Lamp did not turn On
Blinks Low
Off Off Fan Stopped
Red Power
Circuit failure (short or DVI
Off Red Off "
connector unplugged)
3. 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 "DEVICE" 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 occured since the last Initalization.
Note: The front panel buttons must be 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 "32", the LED will flash three times, pause, and then flash two times.
4. Error Codes
The Error Code designations indicating malfunction, or no malfunction, are listed below:
Error Codes "DEVICE" & "MENU"
Error Codes Description
12 No error detected
22 Recovery from Reset
32 Lamp cover is Open
33 Air Filter is open
34 Lamp abnormality
35 DM Fan failed
36 Exhaust or Lamp Ballast Fan failed
37 LCD Engine Fan failed
38 Lamp temperature abnormally high
39 LCD temperature abnormally high
41 Short is detected
42 Lamp Fan failed
44 DVI cable between Format and Engine disconnected
45 PBS Fan Failed
46 JC connector disconnected
47 DM Temperature too high
48 Engine power supply short detected
51 Speaker short detected
56 Shutter not connected
Page 27
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Remote Control Operational Modes
There are two Remote Hand Unit Operational Modes, "Standard" and "NetCommandTM". The Remote is initially
in the "Standard" mode. The "NetCommand" mode is used when controlling Home Theater devices using
NetCommand. To change the Remote Operational Mode:
· Set the Remote to the TV Layer
· Point the Remote away from the TV.
· To change to "Netcommand" ... 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.
SERVICE ADJUSTMENTS
There are only 4 Service Adjustments required in these models:
Two Electrical Adjustments
· Horizontal Centering
· Vertical Centering
Two Mechanical Adjustment
· Picture Rotation
· Vertical Keystone Distortion
Measuring equipment and Jigs
· Conventional Electrical and Hand Tools.
· No additional Test Equipment is required.
Test signal
An internally generated Test Signal is used, no additional signals are required.
Circuit Adjustment Mode
On these models, the Circuit Adjustment Mode is used only for:
· Internal Test Signal activation
· Horizontal Centering
· Vertical Centering
· Data Transfer
These functions can only be performed using the remote control.
1. Activating the Adjustment Mode
1. Press the "MENU" button on a remote hand unit.
(The "MENU" display will appear.)
2. Press the buttons "2", "4", "5" and "7" in that order.
The screen will change to the Circuit Adjustment Mode.
If change does not occur, repeat steps 1 and 2.
2. Test Signal Activation
When in the Circuit Adjustment mode, use the "REWIND" and "FAST FORWARD" buttons on the remote
control to toggle through the test patterns. These patterns are used for both electrical and mechanical
adjustments.
3. Adjustment Function Selection
Use the "AUDIO" button to select an
Adjustment Function.
AD9881 Sub Functions fmt
Page 28
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
4. Adjustment Selection
Use the "VIDEO" button to select a specific elecrtrical ajustment, "1 HPOS" or "2 VPOS".
5. Adjusting Data
After selecting an adjustment item, use the "UP" and "DN" buttons to change adjustment data.
· If the "UP" button is pressed, the adjustment data increases.
· If the "DN" button is pressed, the adjustment data decreases.
6. Saving Data
Press "ENTER" to save the adjustment data in memory.
The display characters go 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.
7. Terminating the circuit adjustment mode
Press the "MENU" button on the remote hand unit twice to terminate the adjustment mode.
Note: The adjustment mode can be also terminated by turning the power off.
Transferring Data
1) Enter the Service Adjustment Mode ... Press "MENU-2-4-5-7"
2) Press "0" when in the Service Mode ... Three choices appear at the top of the screen.
Data Transfer "MENU-2-4-5-7-0"
Display Description
Restore Back Up Resets data to factory values
Upload Terminal Data Not used
Down load WB data to FMT Use after replacing Engine PWB-FORMAT
3) Use the UP & DN keys to highlight the desired choice, the Press "ENTER"
Page 29
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Light Engine Adjustments
Test Signal Activation
1) Press "MENU-2-4-5-7" (Service Mode)
2) Press "REW" (Test Pattern).
Red = 4% overscan
White = 5% overscan
Green = 6% overscan
Cyan = 7% overscan
Yellow = 10% overscan
Prelminary (refer to the diagram below)
1) Remove Back Board
2) Loosen Fixing Screws (1) and (2) in the Slide Lock Mate
3) Loosen Nuts (1) and (2) on the Adjuster
4) Loosen [A-1] and [A-2] on the Adjuster
Light Engine (Rear View)
Page 30
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Trapezoid Distortion Adjustment
1) Loosen [A-1] and [A-2] so they clear
[A-3].
2) For Distortion at the top of the picture,
rotate [A-3] counter clockwise (the
picture will move upward).
3) For distortion at the bottom of the
picture, rotate [A-3] clockwise (the
picture will move upward).
Rotation Adjustment
Clockwise Rotation Needed
1) Loosen [A-2]
2) Use [A-1] to adjust rotation.
Counter Clockwise Rotation Needed.
1) Loosen [A-1]
4) Use [A-2] to adjust rotation
After Adjustment (refer to previous page)
1) Tighten Nuts (1) and (2).
2) Tighten Slide-Lock-Mate fixing screws (1) and (2).
3) Insure [A-1] and [A-2] are flush against [A-3].
Page 31
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
[Format Circuit] Purpose: To center the picture on the screen.
Horizontal/Vertical Position Adjust- Symptom: Picture is off center.
ment
Measuring
Instrument 1. Press "MENU-2-4-5-7", to activate the Service Mode..
Test Point ---- 2. Press "REWIND", to activate the Overscan Test Pattern
3. Select the "FORMAT" function (AUDIO button).
------
Ext. Trigger 4. Select "Item 1" HPOS (VIDEO button).
Measuring ------ 5. Use the ADJUST buttons to center the picture horizontally.
Range 6. Press ENTER to save the new setting.
7. Select "Item 2" VPOS (VIDEO button).
Input Signal Internal Test Patern.
8. Use the ADJUST buttons to center the picture vertically.
Input Terminal Video 9. Press ENTER to save the new setting.
10. Press MENU to exit the Service Mode.
Page 32
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
MICRO / TERMINAL PWB TROUBLESHOOTING
T roubleshooting Guide
Sym ptom Possible Ca use s
No audio or video on one input Physical damage on RCA jack, broken
solder or trace at pin on terminal board
No video on all inputs TA connecter loose, No Vcc to IC2K01,
IC9C00, IC9C10, IC9C20
No audio on all inputs TA connecter loose, No Vcc to IC3J01,
IC9C00, IC9C10, IC9C20, IC3E00,
IC3E01
No HDMI signal Source not HDMI compliant, physical
damage to J2001, J2101, no Vcc to
IC2000, IC2600, IC9C20, IC9C71, IC9C81
No HDMI audio Source is DVI mode, IC2401, IC9C71
No DVI audio IC3J02, IC3J03
No power or TV won't boot Loose RA connector, no Vcc to IC7A00,
IC9C51
TV shuts down Loose or disconnected JD connector , no
Vcc to IC7C81
Main picture ok, no PIP Loose or disconnected JD connector , no
Vcc to IC7C81
Main picture ok, no PIP IC2K01, Q2M20, 21, 22
PIP ok, no main picture IC2K02, 03, 04, Q2M00, 01, 02
No closed captioning Q2K07, 08, 09, 30, 31, 32
IR blaster not working Physical damage on phono jack PJ2E00,
01, broken solder or trace at pin on Micro
board, no Vcc to IC7P01-05
MICRO PWB LAYOUT
Page 33
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
POWER PWB TROUBLESHOOTING
SYMPTOM CHECK POINT POSSIBLE CAUSE
Check +15VS @ connector PD pin 1 Check Q9E00 circuit
ERROR CODE 51
Check -15VS @ connector PD pin 7 Check Q9E00 circuit
Check doubler circuit
ERROR CODE 34 Check 340VDC @ connector PL
Check ballast circuit
IC9A24 circuit
Check 3.3V @ connector PA2 pin 1
ERROR CODE 48 Zener D9A43
Check 18V @ L9A45/C9A82 Q9A13 circuit
IC9A23 circuit
Check 12VS @ connector PD pin 14
Zener D9A41
IC9A21 circuit
ERROR CODE 41 Check 5VS @ connector PC pin 8 Q9A12 circuit
Zener D9A47
F9E10
Check 4.5V @ connector PD pin 19
F9E11
CHECK ALL FUSES
T9A10 circuit
Check 18V @ TP18VS
IC9A10 circuit
NO POWER
IC9A22 circuit
Check 5VSL @ connector PD pin 16
Zener D9A39
Check connector PD pin 20 for HIGH (active) PC9A21 circuit
POWER PWB OUTPUT CONNECTORS
Page 34
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
OPTICAL ENGINE TROUBLESHOOTING
Sym ptom Ca use W ha t to che ck
FMT does not turn on lamp due to fault Check error code on front pannel. Check problem
detection indicated.
No DC supply to ballast Check power PW B PL connector for approx. 340VDC.
Check connections PL-JE, JE-CN2
No Light
No Lamp enable signal Check FMT output Lamplitz FB pin 1. Check
connections FB-FB, CJ3-CJ3
Lamp end of life Repace lamp and check
Ballast Broken Replace ballast and check
FMT does not turn on video Check diagnostic code. Check circuit indicated.
No DVI cable not connected check DVI connections
Picture, Engine power missing Check connections PA2-CN102
bad Engine is blanked. Check control connections FC-FC, KC-CN3100.
picture FMT not providing video signal Check FMT Board.
Engine broken Replace engine and check.
No power to Shutter Check 18V from Power board PB pin4. Check
High
connections PB-PB, KD-CN1
Contrast
No control of shutter Check connections CN5-JG, JG-KD, KD-CN2
Unit not
FMT does not control shutter Replace FMT and check.
W orking
Shutter broken Replace engine.
Fan not working. Temp sensor. Check error code and check indicated fan or sensor.
Set Shuts Filter clogged Check filter and clean or replace.
down after Temp sensor problem Check error code. Check connections DT-KB, LT-KB.
a while Check sensor
Air path blocked Check air flow from each engine fan.
LCD ENGINE INTERNAL LAYOUT
Page 35
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
LAMP PROTECT LINE
COVER-DET LAMP_PROT. LED Emergency
Status Voltage Indicators code Comment
[CD] (KA/pin 14) (Device+Menu)
Normal
Engaged 2.46 V N/A N/A
condition
Turns OFF
Lamp:
OPEN 1.64 V 32 fast
Yellow, blink. (1-2 sec).
ENGINE PROTECT LINE
ENG_PROT. Voltage LED Emergency
Sensor Status
(FB/pin 9) Indicators code
LAMP- FILTER- SENSOR- Comment
TEMP DET DET Specified Measured (Device+Menu)
[LT] [CF] [DT]
Engaged Engaged Engaged 2.88 V ~ 2.82 V N/A N/A Normal
2.68 V condition
Engaged Engaged OPEN 2.48 V ~ 2.40 V Status: 46 Turns OFF
2.28 V fast
Yellow. (1-2 sec).
Engaged OPEN Engaged 2.08 V ~ 2.00 V Status: 33 Turns OFF
1.88 V fast
Yellow, (1-2 sec).
blink.
OPEN Engaged Engaged 1.30 V ~ 1.20 V Status: 38 Turns OFF
1.10 V slowly
Yellow. (25-30
sec).
Warning on
screen.
FAN DETECT LINE
FAN_DET Voltage LED Emergency
Fan Status Indicators code
(FB/pin 9)
Comment
PBS LAMP MD BALST (Device+Menu)
Specified Measured
[JB] [JA] [JC] [JF]
Drive: Drive: Drive: Drive:
3.02 V ~ Normal
10.04 V 10.04 V 6.01 V 7.02 V 3.00 V N/A N/A
2.92 V condition
Engaged Engaged Engaged Engaged
Engaged Engaged Engaged OPEN 2.82 V ~ 2.80 V Status: 36 Turns OFF
2.72 V fast
Engaged Engaged OPEN Engaged 2.62 V ~ 2.60 V Red, 37 (1-2 sec).
2.52 V blinking.
Engaged OPEN Engaged Engaged 2.23 V ~ 2.20 V 42
2.13 V
OPEN Engaged Engaged Engaged 1.44 V ~ 1.40 V 45
1.34 V
Page 36
MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Using Lead Free Solder
Pb Solder · The flux is more corrosive.
· The time required for a good solder connection may
The above symbol indicates Lead (Pb) Free solder was take longer.
used during the construction of PWBs. Only Lead · Poor wet-ability can cause solder balls.
Free solder should be used when servicing these · Higher temperatures can cause flux spattering.
PWBs. · Soldering iron tip life is shortened.
· Dull finish solder joints (not shiny) can appear to be
Solder must be compatible with that used by the a "cold" solder joint.
manufacturer. Leaded solder can not be used on
PWBs manufactured with Pb-free solder. The Mitsub- In general a tip temperature of 700° F will usually provide
ishi standard for service requires the use of Tin-Silver- good results.
Copper (Sn-96.5, Ag-3.0, Cu-0.5). It can be obtained
through the Parts Department.
Order part number: PB FREE SOLDER
Displays used to indicate Pb-free
PCBs will be marked, indicating the level of Pb-free con-
Lead Free solder has a higher melting point, and does struction. Table 1 defines the levels by phase and shows
not "wet" as well as leaded solder. This means it does the different symbols that will be displayed on the PCB.
not adhere as readily to the solder iron tip, and the Additionally, a PCB constructed using Pb-free solder may
surface to be soldered. To counteract this, the flux be simply marked LFS.
used is more corrosive.
When possible, the indication will be placed close to the
The following cautions must be taken when using Pb part number that is screened onto the PCB (not the part
Free solder. label). Figure 1 is an example of a PCB showing the
· Higher temperatures can cause the PWB to display and its location.
warp, detaching surface mount Pb-Free Short Display (When the
components. Phase Definition Display area is too small)
· Higher temperatures may Phase-1 PCB's constructed using
cause thermal damage to
components.
Pb-free solder.
Pb Solder Pb S
· Higher temperatures can cause
plastics, such as connectors, Phase-2 Solder, PCB surface