Eiki LC-WB200 User manual

Multimedia Projector
SERVICE MANUAL
PRODUCT CODE
LC-WB200
1 122 545 01 (KC2BC)
1 122 550 01 (LC2BC)
1 122 550 06 (LC2GC)
Original Version
Chassis No. KC2-WB20000
REFERENCE NO. SM5111354-00
FILE NO.
Model No. LC-WB200
U.S.A, Canada,
Europe, Hong Kong
Give complete“ Chassis No.” for parts
order or servicing, it is shown on the rat-
ing sheet on the cabinet on the projector.
FOREWORD
For your convenience, all service parts, identified in this manual are available through Eiki’s normal distribution chan-
nels. In addition to service part number, the generic descriptions have been given, where possible, to allow your
service technicians to substitute equivalent components which might be available from other sources.
All orders for service parts will be honored. However, in instances where generic components are considered to be
available from several common sources, as would be the case with an industry standard fuse, resistor, or semicon-
ductor, it may be more economical and expeditious to purchase the part locally.

-2-
Contents
SERVICE MANUAL....................................................... 1
Contents ........................................................................ 2
Safety Instructions......................................................... 3
Safety Precautions ..................................................... 3
Product Safety Notice................................................. 3
Service Personnel Warning ........................................ 3
Specifications ................................................................ 4
Circuit Protections ......................................................... 5
Thermal switch ........................................................... 5
Lamp cover switch...................................................... 5
Fuse............................................................................ 5
Warning temperature and power failure protection .... 6
Maintenance.................................................................. 7
Replace the Filters...................................................... 7
Resetting the Filter Counter........................................ 7
Cleaning ..................................................................... 8
Cleaning the Projection Lens...................................... 8
Cleaning the Projector Cabinet................................... 8
Lamp Replacement ....................................................... 9
Lamp replacement...................................................... 9
How to check Lamp Used Time................................ 10
Warning Message on the non-standard lamp used.. 10
Security Function Notice.............................................. 11
Resetting procedure ................................................. 11
Standby mode Notice .................................................. 12
Mechanical Disassembly............................................. 13
Optical Parts Disassembly........................................... 19
Adjustments................................................................. 25
Adjustments after Parts Replacement ...................... 25
Note on Main Board Replacement ........................... 25
Optical Adjustments..................................................... 26
Contrast adjustment ................................................. 26
Optical center adjustment......................................... 27
Electrical Adjustments ................................................. 30
Service Adjustment Menu Operation........................ 30
Circuit Adjustments................................................... 31
Test Points and Locations ........................................ 35
Service Adjustment Data ......................................... 36
Chassis Block Diagrams.............................................. 55
Chassis over view..................................................... 55
System control.......................................................... 56
Lamp control............................................................. 57
Audio circuit .............................................................. 58
Power supply & protection circuit ............................. 59
Fan control circuit ..................................................... 60
Troubleshooting........................................................... 61
Indicators and Projector Condition ........................... 61
No Power.................................................................. 62
No Picture................................................................. 63
No Sound.................................................................. 64
Control Port Functions................................................. 65
Scaler I/O Port Functions (PW392) .......................... 65
Control Port Functions................................................. 66
IC Block Diagrams....................................................... 67
Parts Location Diagrams ............................................. 73
Mechanical Parts List .................................................. 80
Electrical Parts List...................................................... 81
Diagrams & Drawings..................................................A1
Parts description and reading in schematic diagram...A2
Schematic Diagrams ...................................................A3
Printed Wiring Board Drawings ...................................A9
Pin description of diode, transistor and IC.................A13
Note on Soldering......................................................A14

-3-
Safety Instructions
WARNING:
The chassis of this projector is isolated (COLD) from AC line by using the converter transformer. Primary side
of the converter and lamp power supply unit circuit is connected to the AC line and it is hot, which hot circuit is
identified with the line ( ) in the schematic diagram. For continued product safety and protection of per-
sonnel injury, servicing should be made with qualified personnel.
The following precautions must be observed.
Safety Precautions
1: An isolation transformer should be connected in
the power line between the projector and the AC line
before any service is performed on the projector.
2: Comply with all caution and safety-related notes
provided on the cabinet back, cabinet bottom, inside
the cabinet or on the chassis.
3: When replacing a chassis in the cabinet, always
be certain that all the protective devices are installed
properly, such as, control knobs, adjustment covers
or shields, barriers, etc.
DO NOT OPERATE THIS PROJECTOR WITHOUT
THE PROTECTIVE SHIELD IN POSITION AND PR
OPERLY SECURED.
4: Before replacing the cabinet cover, thoroughly
inspect the inside of the cabinet to see that no stray
parts or tools have been left inside.
Before returning any projector to the customer, the
service personnel must be sure it is completely safe
to operate without danger of electric shock.
Service Personnel Warning
Eye damage may result from directly viewing the light produced by the Lamp used in this equipment. Always
turn off Lamp before opening cover. The Ultraviolet radiation eye protection required during this servicing.
Never turn the power on without the lamp to avoid electric-shock or damage of the devices since the stabilizer
generates high voltages (15kV - 25kV) at its starts.
Since the lamp is very high temperature during units operation replacement of the lamp should be done at least
one hour after the power has been turned off, to allow the lamp cool-off.
Product Safety Notice
Product safety should be considered when a component replacement is made in any area of the projector.
Components indicated by mark !in the parts list and the schematic diagram designate components in which
safety can be of special significance. It is, therefore, particularly recommended that the replacement of there
parts must be made by exactly the same parts.

-4-
Specifications
This symbol on the nameplate means the product is Listed by Underwriters
Laboratories Inc. It is designed and manufactured to meet rigid U.L. safety stan-
dards against risk of fire, casualty and electrical hazards.
●The specifications are subject to change without notice.
●LCD panels are manufactured to the highest possible standards. Even though 99.99% of the pixels are effective, a
tiny fraction of the pixels (0.01% or less) may be ineffective by the characteristics of the LCD panels.
Mechanical Information
Projector Type Multi-media Projector
Dimensions (W x H x D) 13.78" x 3.44" x 10.02"
(350.0 mm X 87.5 mm X 254.4 mm ) (Not including protrusions)
Net Weight 7.51 lbs (3.4 kg)7.51 lbs (3.4 kg)
       
Panel Resolution
LCD Panel System 0.59" TFT Active Matrix type, 3 panels
Panel Resolution 1,280 x 800 dots
Number of Pixels 3,072,000 (1,280 x 800 x 3 panels)
Signal Compatibility
Color System PAL, SECAM, NTSC, NTSC4.43, PAL-M, and PAL-N
SD/HD TV Signal Component: 480i, 480p, 575i, 575p, 720p, 1035i and 1080i
HDMI: 480p, 575p, 720p, 1080i and 1080p
Input Scanning Frequency H-sync. 15kHz–100 kHz, V-sync. 50–100 Hz
Optical Information
Projection Image Size (Diagonal) Adjustable from 30” to 300”
Throw Distance 2.4' ~ 25.2' (0.74 m ~ 7.67 m)2.4' ~ 25.2' (0.74 m ~ 7.67 m)
Projection Lens F 1.65 ~ 2.33 lens with f 15.47 mm ~ 24.53 mm with manual zoom and focusF 1.65 ~ 2.33 lens with f 15.47 mm ~ 24.53 mm with manual zoom and focus
Projection Lamp 245 W
Interface
Video Input Jack RCA Type x 1
S-video Input Jack Mini DIN 4 pin x 1
Audio Input Jacks RCA Type x 2
Computer 1/Computer 2 Audio Input Jacks Mini Jack (stereo) x 2
Computer In 1/Component Input Terminal Mini D-sub 15 pin x 1
Computer In 2/Monitor Output Terminal Mini D-sub 15 pin x 1
Control Port D-sub 9 pin x 1
Audio Output Jack Mini Jack (stereo) x 1 (variable)
LAN Connection Terminal RJ-45
HDMI HDMI (V.1.3 with Deep Color) x 1
Audio
Internal Audio Amp 10 W RMS
Built-in Speaker 1 speaker, ø1.5"(37 mm)
Power
Voltage and Power Consumption AC 100–240 V (3.8-1.8 A Max.), 50/60 Hz
Operating Environment
  
  
Remote Control
Battery AAA or LR03 1.5V Alkaline Type x2Battery AAA or LR03 1.5V Alkaline Type x2
      
Dimensions 2.0" (W) x 0.7" (H) x 4.3" (D) (52 mm x 18 mm x 110 mm)Dimensions 2.0" (W) x 0.7" (H) x 4.3" (D) (52 mm x 18 mm x 110 mm)
Net Weight 2.37 oz (67 g) (including batteries)Net Weight 2.37 oz (67 g) (including batteries)

-5-
Lamp cover switch
The lamp cover switch (SW901) cuts off the drive signal to the lamp
circuit when the lamp cover is removed or not closed completely.
After opening the lamp cover for replacing the lamp ass’y, place the
lamp cover correctly otherwise the projector can not turn on.
Thermal switch
There is the thermal switch (SW902) inside of the projector to detect
the internal temperature rising abnormally. When the internal tem-

operation of the power supply circuit.

switch returns automatically.
This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the pro-
jector, it will automatically turn off by operating one of the following protection circuits.
Fuse
Circuit Protections
Fuse
A fuse is located inside of the projector. When the POWER indica-
tor is not lighting, the fuse may be opened. Check the fuse as fol-
lowing steps.
The fuse should be used with the following type;
Fuse Part No.: 323 021 7804
TYPE T6.3AH 250V FUSE
LITTEL FUSE INC. TYPE 21506.3
or
How to replace the fuse
1. The fuse is placed on the filter board. Remove the cabinet top
following the "Mechanical Disassembly" .
2. Take the fuse off from the fuse holder, and replace the new one
with the specified type.
Fuse Part No, : 423 034 4101
TYPE T6.3AH 250V FUSE
Hollyland Co, Ltd. TYPE 50CT063H
Thermal switch (SW902)
Lamp cover switch
(SW901)

-6-
Circuit Protections
The projector will be automatically turned off when the internal temperature of the projector is abnormally high, or the
cooling fans stop spinning, or the power supplies in the projector are failed.
Warning temperature and power failure protection
The projector is shut down and the WARNING indicator lights red.
When the projector detects an abnormal condition, it is automatically shut down to protect the inside of the projector
and the WARNING indicator lights red. In this case, unplug the AC power cord and reconnect it, and then turn the
projector on once again to verify operation.
WARNING
DO NOT LEAVE THE PROJECTOR WITH THE AC POWER CORD CONNECTED UNDER AN
ABNORMAL CONDITION. IT MAY RESULT IN FIRE OR ELECTRIC SHOCK.
4Note:
- If the WARNING indicator lights red, it may defect the cooling fans or power supply circuits. Check fans operation
and power supply lines referring to the chapter “Power supply & protection circuit” and "Fan control circuit" in the
Chassis Block Diagram section.
When the temperature inside the projector reaches a certain level, the projector will be automatically shut down to
protect the inside of the projector and the WARNING and POWER indicators start blinking. When the projector has
cooled down enough (to its normal operating temperature), the POWER indicator stops blinking and lights red, The
projector can be turned on again by pressing the ON/STAND-BY button.
4Note:
The WARNING indicator continues to blink even after the temperature inside the projector returns to normal. When
the projector is turned on again, the WARNING indicator stops blinking.
Check items
- Remove dust around the air filter.
- Ventilation slots of the projector are blocked. In such an event, reposition the projector so that ventilation slots are
not obstructed.

The projector is shut down and the WARNING indicator is blinking red.
Top Control
WARNING
indicator
POWER
indicator

-7-
Replace the Filters
Maintenance
Resetting the Filter Counter
Turn off the projector and unplug the AC power cord
from the AC outlet.
Turn over the projector and pull out the filter cover
(bottom); pull up the handle and take out the whole
filter (bottom).
Press up the latches and pull out the filter cover (side);
pull out the handle and take out the side filter.
1
2
Filter prevents dust from accumulating on the optical elements inside the projector. Should the filter become
clogged with dust particles, it will reduce cooling fans’ effectiveness and may result in internal heat buildup
and adversely affect the life of the projector. If a “Filter warning” icon appears on the screen, replace the filters
immediately. Replace the filters by following the steps below.
Put new filters back into the position. Make sure that
the filters are fully inserted to the projector.
3
CAUTION
–Do not operate the projector with the filters
removed. Dust may accumulate on the optical
elements degrading picture quality.
–Do not put anything into the air vents. Doing so
may result in malfunction of the projector.
–Do not wash the filters with water or any other
liquid matter. Otherwise the filters may be
damaged.
RECOMMENDATION
We recommend avoiding dusty/smoky environments
when you operate the projector. Usage in these
environments may cause poor image quality.
When using the projector under dusty or smoky conditions,
dust may accumulate on a lens, LCD panels, or optical
elements inside the projector degrading the quality of a
projected image. When the symptoms above are noticed,
contact your authorized dealer or service center for proper
cleaning.
Be sure to reset the Filter counter after replacing the filters.
Press the MENU button to display the On-Screen Menu.
Use the Point ed buttons to select the Setting Menu
and then press the Point 8 or the SELECT button.
Use the Point ed buttons select Filter counter and
then press the Point 8or the SELECT button. Use the
Point ed buttons to select Filter counter reset and
then press the SELECT button. The Filter counter
Reset? appears. Select Yes to continue.
1
2
Filter counter
The Filter counter
Reset? appears.
Select Yes, then
another confirmation
box appears.
Select Yes again
to reset the Filter
counter.
Another confirmation dialog box appears, select Yes to
reset the Filter counter.
3
Connect the AC power cord to the projector and turn
on the projector.
4
Filter cover (bottom)
Filter cover (side)
Latches (press up) Handle (pull out)
Handle (pull up)



-8-
Maintenance
Cleaning
Cleaning the Projection Lens
Unplug the AC power cord before cleaning.
Gently wipe the projector body with a soft dry cleaning cloth.
When the cabinet is heavily soiled, use a small amount
of mild detergent and finish with a soft dry cleaning cloth.
Avoid using an excessive amount of cleaner. Abrasive
cleaners, solvents or other harsh chemicals might scratch
the surface of the cabinet.
When the projector is not in use, put the projector in
an appropriate carrying case to protect it from dust and
scratches.
Cleaning the Projector Cabinet
Cleaning with air spray
Remove the cabinet top following to “Mechanical Disassembly”. Clean up the LCD panel and polarizing plate by
using the air spray from the cabinet top opening.
Caution:
Use a commercial (inert gas) air spray designed for cleaning camera and computer equipment. Use a resin-based
nozzle only. Be very careful not to damage optical parts with the nozzle tip. Never use any kind of cleanser on the
unit. Also, never use abrasive materials on the unit as this may cause irreparable damage.
Disassembly Cleaning
Disassembly cleaning method should only be performed when the unit is considerable dirty and cannot be
sufficiently cleaned by air spraying alone.
Be sure to readjust the optical system after performing disassembly cleaning.
1. Remove the cabinet top and main units following to “Mechanical Disassembly”.
2. Remove the optical base top following to “Optical Unit Disassembly”. If the LCD panel needs cleaning, remove
the LCD panel unit following to “LCD panel replacement”.
3. Clean the optical parts with a soft cloth. Clean extremely dirty areas using a cloth moistened with alcohol.
Caution:
The surface of the optical components consists of multiple dielectric layers with varying degrees of refraction. Never
use organic solvents (thinner, etc.) or any kind of cleanser on these components.
Since the LCD panel is equipped with an electronic circuit, never use any liquids (water, etc.) to clean the unit. Use
of liquid may cause the unit to malfunction.
Unplug the AC power cord before cleaning.
Gently wipe the projection lens with a cleaning cloth that
contains a small amount of non-abrasive camera lens
cleaner, or use a lens cleaning paper or commercially
available air blower to clean the lens.
Avoid using an excessive amount of cleaner. Abrasive
cleaners, solvents, or other harsh chemicals might scratch
the surface of the lens.
After long periods of use, dust and other particles will accumulate on the LCD panel, prism, mirror, polarized
glass, lens, etc., causing the picture to darken or color to blur. If this occurs, clean the inside of optical unit.
Remove dust and other particles using air spray. If dirt cannot be removed by air spray, disassemble and clean
the optical unit.

-9-
Lamp Replacement
Lamp replacement
WARNING:
- For continued safety, replace with a lamp assembly of the same type.
- Allow the projector to cool for at least one hour before you open the
lamp cover. The inside of the projector can become very hot.
- Do not drop the lamp module or touch the glass bulb! The glass can
shatter and cause injury.
WARNING : TURN OFF THE UV LAMP BEFORE OPENING THE LAMP COVER.
USE UV RADIATION EYE AND SKIN PROTECTION DURING SERVICING.
Unplug the AC power cord. Let the projector cool for at least 45
minutes.
Loosen the three (3) screws that secure the lamp. Lift the lamp
out of the projector by using the handles.
1
3
Replace the lamp with a new one and secure the three (3)
screws. Make sure that the lamp is set properly. Close the
lamp cover and secure the screw.
4
Loosen the screw and open the lamp cover.
2
Connect the AC power cord to the projector and turn on the
projector.
5
Procedure
For continued safety, replace with a lamp of the same
type. Do not drop a lamp or touch a glass bulb! The
glass can shatter and may cause injury.
Allow a projector to cool for at least 45 minutes
before you open the Lamp Cover. The inside of
the projector can become very hot.
CAUTION
CAUTION
CAUTION
When replacing the lamp because it has stopped illuminating, there is a possibility that the lamp may be
broken.
If replacing the lamp of a projector which has been installed on the ceiling, you should always assume that the
lamp is broken, and you should stand to the side of the lamp cover, not underneath it. Remove the lamp cover
gently. Small pieces of glass may fall out when the lamp cover is opened. If pieces of glass get into your eyes
or mouth, seek medical advice immediately.
ORDER REPLACEMENT LAMP
Type No. POA-LMP148
Service Parts No. 610 352 7949
Lamp
Screw
Handles
Screw
Lamp Cover
Screw
Screw

-10-
Lamp Replacement
How to check Lamp Used Time
The LAMP REPLACE indicator will light yellow
when the total lamp used time (Corresponding
value) reaches 5,000 hours. This is to indicate
that lamp replacement is required.
The tatal lamp used time is calculated by using
the below expression,
Total lamp used time
=Tnormal x 1.67 + Teco + Tauto x k*
Tnormal : used time in the normal mode
Teco : used time in the eco and eco2 mode
Tauto : used time in the auto mode
* Factor k is changed from 1.0 to 1.67 automati-
cally depending on the input signal
You can check the lamp used time following
to the below procedure.
1Press and hold the ON/STAND-BY button on the
projector or the remote control for more
than 20 seconds.
2 The projector used time and lamp used
time will be displayed on the screen briefly
as figure.
Counter
Projector 850H
Lamp
Auto 200H
Normal 150H
Eco1 250H
Eco2 250H
Corresponding value 1010H
Total lamp used time
Projector used time
If the non-standard lamp is used, the warning and confirmation messages will appear on the screen every startup.
Some of the functions are limited when the non-standard lamp is used in spite of the warning.
Since the lamp is not standard,
projector failed to read lamp data.
Continue to use this lamp?
Yes
No
Cumulative
lamp
operating
time in each
mode.
Warning Message on the non-standard lamp used