■ Pins description of ICs, transistors, diodes __________________________ A16
Page 3
-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 personnel
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 pro-
vided 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
PROPERLY 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
45 minutes 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.
DO NOT ATTEMPT TO SERVICING THE
REMOTE CONTROL UNIT.
Laser Beam may be leaked out when in disassemble
the Unit. As the Laser Beam used in this Remote control unit is harmful to the eyes.
LASER RADIATION
DO NOT STARE INTO BEAM
MAX. OUTPUT: 1mW
WAVE LENGTH: 650± 20nm
CLASS
II LASER PRODUCT
This product is complied with 21 CFR
part 1040.10
CAUTION
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
LASER-STRAHLING
NICHT IN DEN STRAHL BLICKEN
LASER KLASSE 2
● The specifications are subject to change without notice.
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 standards against risk of fire, casualty and electrical hazards.
Projector TypeMulti-media Projector
Dimensions (W x H x D)13.11” x 3.52” x 9.96” (333mm x 89.5mm x 253mm)
Net Weight9.5 lbs (4.3 kg)
LCD Panel System0.8” TFT Active Matrix type, 3 panels
Panel Resolution800 x 600 dots
Number of Pixels1,440,000 (800 x 600 x 3 panels)
Color System6 color system (PAL, SECAM, NTSC, NTSC4.43, PAL-M and PAL-N)
High Definition TV SIgnals480i, 480p, 575i, 575p, 720p. 1035i and 1080i
Computer Input/Monitor Output Terminal(VGA) HDB15 Terminal x 1 (This terminal is switchable)
Computer Audio Input JackMini Jack (stereo)
Control Port ConnectorMini DIN 8 pin x 1
USB ConnectorUSB Series B receptacle x 1
Audio Output JacksRCA Type x 2
Internal Audio Amp.1.0watt RMS (monaural)
Built-in Speaker1 speaker, 1.18” x 1.57” (30mm x 40mm)
Feet Adjustment0˚ to 15.6˚
Voltage andAC 100 ~ 120V (3.0A Max. Ampere), 50/60Hz (The U.S.A and Canada)
Power ConsumptionAC 200 ~ 240V (1.5A Max. Ampere), 50/60Hz (Continental Europe and the U.K)
Operating Temperature41˚F ~ 95˚F (5˚C ~ 35˚C)
Storage Temperature14˚F ~ 140˚F (-10˚C ~ 60˚C)
Remote Control TransmittersWireless Remote Control, batteries AA, UM3 or R06 Type x 2
Page 5
-5-
● : Adjustment necessary ❍ : Check necessary
■ Adjustments after Parts Replacement
Contrast Adjustment
R-Contrast adjustment●
G-Contrast adjustment●
B-Contrast adjustment●
Condenser lens adjustment❍●
Condenser lens-out adjustment❍●
Relay lens-out adjustment❍●
Fan voltage adjustment●
Signal center adjustment●
PSIG adjustment●
Gain adjustment [PC]●
Gain adjustment [Video]●
Gain adjustment [Component]●
Gamma gain adjustment [PC]●
Gamma gain adjustment [AV]●
Common center adjustment●●
Signal offset adjustment [PC]●
Signal offset adjustment [AV]●
White balance adjustment❍❍
Disassembly / Replaced Parts
LCD/
Prism
Ass’y
Condenser
Lens
Polarized glass
RGB
Optical Adjustments
Electrical Adjustments
P. F .
Board
Main
Board
Condenser
Lens-Out
Relay
Lens-Out
Powe r
Board
Page 6
This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the projector, it will automatically turn off by operating one of the following protection circuits.
● Fuse
The fuse is located inside of the projector. When either the LAMP
indicator or the READY indicator is not illuminated, fuse may be
opened. Check the fuse as following steps.
It should be used the specified fuse as follows;
How to replace the fuse
1. Remove the cabinet top following to “Mechanical
Disassemblies”.
2. Remove the fuse from fuse holder.
To install the fuse, take reversed step in the above.
Fuse Part No.: 423 022 2102
TYPE T4.0AH 250V FUSE
LITTLE FUSE INC. TYPE 215004
-6-
● Interlock switch
The interlock switch (SW904) cuts off the AC mains power supply
when the lamp cover is removed. 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
prevent the internal temperature rising abnormally. When the
internal temperature reaches near 100˚C, turn off the AC main
power supply automatically.
The thermal switch is not reset to normal automatically even if the
internal temperature becomes normal. Reset the thermal switch
following procedure.
Check the resistance between terminals of thermal switch by
using the tester. If it has high impedance, thermal switch may be
in operative.
How to reset the thermal switch
1. Remove cabinet top following to the “Mechanical
Disassemblies”.
2. Press the reset button on the thermal switch.
CAUTION:
Before press the reset button, make sure that the AC cord must
be disconnected from the AC outlet.
■ Circuit Protections
Thermal switch (SW902)
Reset Button
Line Filter Board
Fuse
Page 7
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Circuit Protections
● Warning temperature and power failure protection
The projector will be automatically turned off when the internal temperature of the projector exceeds the normal operating temperature, or the cooling fans stop, or the power supplies in the projector are failed.
- If the TEMP WARNING indicator (red) is flashing, it may detect the abnormal temperature inside the projector.
Check the following possible causes and wait until the WARNING TEMP indicator flashing stops, and then try to
turn on the projector.
- If both of the TEMP WARNING (red) and READY (green) indicators are flashing at the same time, It may defect the
cooling fans and power supply circuits. Check fan operation and power supply lines referring to the chapter “Power
supply & protection circuit” in the Chassis Block Diagram section.
Possible causes
- Air filter is clogged with dust particles. Remove dust from the air filter by following instructions in the “Air filter
care and cleaning” below.
- Ventilation slots of the projector are blocked. In such an event, reposition the projector so that ventilation slots are
not obstructed.
- Check if projector is used at higher temperature place (Normal operating temperature is 5 to 35 ˚C or 41 to 95˚F)
Air filter care and cleaning
The removable air filter prevents dust from accumulation on the surface of the projection lens and projection mirror.
Should the air filter become clogged with dust particles, it will reduce the cooling fan’s effectiveness and may result
in internal heat build up and reduce the life of the projector.
To clean up the air filters, follow the cleaning procedure
below:
1. Tu rn the power off, and disconnect the AC power cord
from the AC outlet.
2. Tu rn the projector up side down and remove air filter by
pulling the latches of it upward.
3. Clean the air filter with brush or wash out the dust and
particles.
4. Replace the air filter properly. Make sure that the air fil-
ter is fully inserted.
CAUTION:
Do not operate the projector with the air filter removed. The
dust is stuck on the LCD panel and the mirror, and it may
spoil the fine picture image.
Do not put the small parts into the air intake vents. It may
result in the malfunction of the projector. The air filters are
small parts. Take care that children don’t eat or swallow it.
RECOMMENDATION
We recommend not to use the projector in dusty, smoky places. Using it in dusty place may cause the poor picture
quality.
When using under the dusty or smoky conditions, dust may accumulate on the LCD panel and lens inside it, and
may resultantly be projected on the screen together with the picture.
When the above symptoms are noticed, please clean up the LCD panel and lens following to the “Cleaning
Method”.
Air filter
Page 8
1 Remove 4 screws A (M3x6) to take the Cabinet Top Ass’y upward off.
2 Remove the Control Panel off from the Cabinet Top by lifting the edge of
control panel.
Fig.1
1 Remove 8 screws (M3x6) to take the Main Board upward off.
Fig.2
z Cabinet Top and Control Panel removal
x Main Board removal
A
A
A
A
Main Board
Control panel
Cabinet top
-8-
■ Mechanical Disassemblies
Mechanical disassemble should be made following procedures in numerical order.
Following steps show the basic procedures, therefore unnecessary step may be ignored.
Caution:
The parts and screws should be placed exactly the same position as the original otherwise it may cause loss of
performance and product safety.
Screws Expression
(Type
Diameter x Length) mm
T typeM Type
Page 9
-9-
Mechanical Disassemblies
1 Remove 1 screw A (M4x8) to release grounding wires.
2 Pull the Rear Panel ass’y upward.
3 Remove 4 screws B (T3x6) and remove the AV Board.
4 Remove 4 screws C (T3x6) and remove the DVI Board.
5 Remove 4 screws D (T2.6x6) and remove the speaker.
6 Remove 1 screws E (T3x8) and remove the Sensor Board.
Fig.3
Fig.4
1 Remove 3 screws A (M3x4), 1 screw B (M3x8) and unhook 2 hooks C at
the both of left and right side, and the take the Front Panel ass’y off.
2 Remove 1 screw D (T3x8) to take the R/C Board off.
c AV , DVI, Temp Board and Speaker removal
v Front Panel and R/C Board removal
A
B
B
B
C
A
A
A
B
C
D
DVI board
AV board
Speaker
R/C board
B
C
C
D
D
E
Te mp board
Page 10
-10-
Mechanical Disassemblies
1 Remove 1 screw A (M3x4) and remove SW902, and then remove 1 screw
B (M3x6) and disconnect the Lamp Socket.
2 Remove 2 screws C (M3x6) to take the Lamp Ballast ass’y upward off.
3 Remove 2 screws D (T2x6) to take the isolation sheet off.
4 Remove 4 screws E (T3x6) to take the lamp ballast board off.
Fig.5
1
Remove 3 screws A (M3x6) and pull the Filter Board ass’y upward.
2 Remove 1 screw B (M4x8) to take the grounding lead from the cabinet bottom.
3 Remove 4 screws C (T3x8) to take the Filter Board off.
Fig.6
b Lamp Ballast Unit removal
n Filter Board removal
B
Lamp ballast board
C
C
E
E
E
E
A
A
A
B
C
C
C
C
Filter board
D
D
Isolation sheet
A
Lamp ballast socket
SW902
Page 11
-11-
Mechanical Disassemblies
1 Remove 4 screws A (M3x12) to take the Fan(FN901) off.
2 Remove 4 screws B (M3x8) to take the Fan(FN906) off.
3 Remove 3 screws C (M3x6) to take the Power Box Cover
upward off.
1 Remove 1 screw A (M3x6) to take the Lamp
Cover off.
2 Loosen 3 screws B to take the Lamp assembly by
pulling the handle.
Step to next procedure.
Fig.8-1
Fig.7
m Power Box Cover and Fans(FN901, FN906) removal
, Optical Unit removal (1)
A
A
A
A
B
BB
B
C
C
C
FN901
FN906
Power box cover
Lamp cover
Lamp ass’y
A
B
B
B
Page 12
-12-
Mechanical Disassemblies
Step from previous procedure.
3 Remove 6 screws C (M3x8) to take the Optical Unit upward upward off.
To mount optical unit, mount optical unit first then mount the Lamp assembly
and Lamp Cover.
1 Remove 4 screws A (T3x6), 4 screws B (T3x8) to
take the Power Board ass’y upward off.
2 Remove 4 screws C (M3x6) to take the P. F. Board
from the Power Board.
3 Remove 3 screws D (M3x6) to take the Power
Board holder from the Cabinet Bottom.
Fig.9
. Power and P.F. Board removal
A
Power board
A
A
A
B
B
B
B
C
C
C
C
D
D
D
P. F. board
Fig.8-2
, Optical Unit removal (2)
Optical unit
C
C
C
C
C
C
Page 13
-13-
1 Remove 1 screw A (M3x6) and take a Washer,
Spring and Interlock Switch lever.
2 Pull the Fan and duct ass’y upward, then remove the
2 screws B (M3x6) to take the Fan (FN905) off.
Fig.10
1 Remove 8 screws A (T3x8) and to take the Fan
Duct Top off and remove the Fans (FN902,
FN903, FN904).
2 Remove 4 screws B (M3x6) to take the Fan Duct
Bottom off from the Cabinet Bottom.
Fig.11
⁄0 Fan (FN905) removal
⁄1 Fans (FN902, FN903, FN904) removal
Interlock switch lever
A
B
B
FN905
A
A
A
A
A
A
A
B
B
B
B
FN904
FN903
FN902
Fan duct top
Mechanical Disassemblies
Page 14
-14-
■ Optical Parts Disassemblies
Before taking this procedure, remove Cabinet Top and Main Board following to the “Mechanical Disassemblies”.
Disassembly requires a 2.0mm hex wrench.
1 Remove the Front Panel following to “Front Panel Removal” on “Mechanical
Disassemblies”.
2 Remove 4 screws (M3x10) to take the Projection Lens ass’y off.
1 Remove 2 screws A (M2.5x6) and pull the Integrator Lens-In ass’y upward.
2 Remove 1 stoppers B and then take the Lens off from the holder.
Fig.1
Integrator Lens
* Lens should be placed as the
rugged surface side comes to
the holder side.
Fig.2-1
Fig.2-2
z Projection Lens removal
x Integrator Lens-In disassembly
Stopper B
A
A
Page 15
-15-
Optical Pats Disassemblies
1 Remove 2 screws A (M2.5x6) and pull the Condenser Lens ass’y upward.
2 Remove 4 screws B (M2x4) to take the Lens off from the holder.
1 Remove 2 screws A (M2.5x6) and pull the Condenser Lens-Out ass’y
upward.
2 Remove 2 screws B (M2x4) to take the Lens off from the holder.
Note:
Should be place the lens as shown in the figure.
A
B
Condenser Lens
Fig.3-2
Fig.3-1
* Lens should be placed as the flat
surface side comes to the holder
side.
Holder
A
A
Fig.4-2
Fig.4-1
B
B
Holder
Condenser Lens-Out
A
c Condenser lens disassembly
v Condenser Lens-Out disassembly
B
B
B
Side View
Page 16
-16-
Optical Parts Disassemblies
1 Remove 2 screws A (M2.5x6) and pull the Relay Lens-Out ass’y upward.
2 Remove 2 screws B (M2x4) to take the Lens off from the holder.
Note:
There is no mounting direction of the lens.
1 Remove each screw (M2.5x6) and pull the Polarized Glass-In ass’y
upward.
2 Unhook the stoppers and take the glass off upward.
Hooks
Polarized Glass-In
Fig.6-2
Fig.6-1
* Should be places the glass as the
film attached side comes to the
prism side.
Phase Sheet
A
Fig.5-2
Fig.5-1
B
B
Holder
Relay Lens-Out
A
b Relay Lens-Out disassembly
n Polarized Glass-In removal
Page 17
-17-
Optical Parts Disassemblies
1 Remove 4 screws A (M2.5x4) and take the LCD/Prism ass’y off upward
from the optical unit.
2 Remove each screw B and take the glass off upward.
Note: The G-LCD panel has a pre-polarized glass is mounted between the
polarized glass-out (G) and LCD panel as Fig.7-2.
LCD Panel/
Prism Ass’y
Note:
Do not replace the LCD panel
separately otherwise it can
not obtain proper picture.
1 Remove 9 screws (M3x10) to take the Optical Unit Top off upward.
When the optical parts in the optical unit mounting or assembling, the
parts must be mounted in the specified location and direction as
shown in figure below.
. Locations and Directions
Note: The arrows in the figure are indicated that
there are the direction of part placement.
Place each part as the printed marker on the
part comes to each arrow direction.
Page 19
-19-
■ LCD Panel/Prism Ass’y Replacement
IMPORTANT NOTICE on LCD Panel/Prism Ass'y Replacement
LCD panels used for this model can not be replaced separately. Do not disassemble the LCD Panel/Prism Ass’y.
These LCD panels are installed with precision at the factory. When replacing the LCD panel, should be replaced
whole of the LCD panels and prism ass’y at once.
After replacing LCD Panel/Prism ass’y, please check the following points.
- Check that there is no color shading at the top, bottom, left or right of the screen. If there is, try to
remove the shading following to the chapter “Optical Adjustment”.
- Check the white balance. If it needs the adjustment, adjust the white balance following to the “White
Balance Adjustment” and “Common Centre Adjustment” in the chapter “Electrical Adjustment”.
- Check the white uniformity on the screen.
If you find the color shading at the some part of the screen, it needs to take the color shading adjustment. This adjustment should be performed by a computer and it also requires a special software
“Color Shading Correction”. The software will be supplied separately and can be ordered as follows;
COLOR SHADING CORRECTION Ver. 3.0
Service P
arts No.645 056 6288
1 Remove the cabinet top and main board following to
“Mechanical Disassemblies”.
2 Remove 4 screws by using the 2.0 mm hex driver and
take the LCD Panel/Prism ass’y off upward from the
optical unit.
After replacing or installing the LCD Panel/Prism ass'y,
please make sure to obtain the best focus in both TELE
and WIDE zoom. If the focus adjustment is required,
please adjust the positioning of LCD Panel/Prism Ass’y by
following below procedure.
Mounting Procedure:
1 Loosen 4 screws A on the LCD Panel/Prism ass'y with
2.0 mm hex driver.
2 Tu rn the projector on and project the image with WIDE
zoom, and adjust the FOCUS control to obtain the best
focus.
3 Tu rn the ZOOM control to the TELE position.
4 Move the LCD Panel/Prism Ass’y backward or forward
(about 0mm ~ 0.8mm) to obtain the proper focus.
Confirm the focus at TELE and WIDE zoom.
5 Tighten 4 screws A to fix the LCD Panel/Prism ass'y.
Top View
A
A
A
A
LCD Panel/Prism Ass’y
LCD Panel/Prism Ass’y removal
Note on LCD Panel/Prism Ass’y Mounting
LCD Panel/Prism
Ass’y
Note:
Do not replace the LCD
panel separately otherwise
it can not obtain proper picture.
Page 20
-20-
■ Lamp Replacement
The LAMP REPLACEMENT indicator will illuminate
when the total lamp used time reaches 2000 hours.
The total lamp used time is calculated by using the
below expression,
Total lamp used time = Teco + Tnormal (1+1/3)
Teco: used time in the Eco mode
Tnormal : used time in the Normal mode
This is to indicate that lamp replacement is required.
You can check the lamp used time following to the
below procedure.
1 Press and hold the e button on the projector for more
than 20 seconds.
2 The lamp used time in each normal mode and eco
mode and total used time are displayed on the bottom right corner of the screen briefly.
WARNING:
- For continued safety, replace with a lamp assembly of the same type.
- Allow the projector to cool for at least 45 minutes 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.
Procedure
1 Tu rn off the projector and disconnect the AC cord. Allow the projector to
cool for at least 45 minutes.
2 Loosen 1 screws with a screwdriver and open the lamp cover.
3 Loosen 2 screws and pull out the lamp assembly by grasping the handle.
4 Replace the lamp assembly securely and tighten 2 screws.
5 Close the lamp cover and tighten 1 screw.
6 Connect the AC cord to the projector and turn on.
Note:
- Do not reset the Lamp Replace Counter, except after lamp is replaced.
- The projector can not be turned-on with lamp cover removed, because
when the lamp cover is removed, the interlock switch is also released to
switch off the mains power for safety.
7 Reset the Lamp Replace Counter, see below explanation.
1 Tu rn the projector on, and press the MENU button
and the on-screen menu will appear. Press the 7 or 8
button to move a red frame pointer to SETTING menu
icon.
2 Press the e button to move a red frame pointer to
“Lamp counter reset” and then press the SELECT
button.The message “Lamp replace counter reset?” is
displayed. Move the pointer to [Yes] and the press the
SELECT button.
3 Another confirmation dialog box appears and select
[Yes] to reset Lamp Replace Counter .
Please refer to the owners manual for further information.
Recommendation
Should the air filter become clogged with dust particles,
it will reduce the cooling fan’s effectiveness and may
result in internal heat build up and short lamp life. We
recommend cleaning the air filter after the projection
lamp is replaced.
Refer to “Air Filter Cleaning”.
Total lamp used time
How to reset Lamp Replace Counter
How to check Lamp used time
Lamp cover
Lamp Assembly
Handle
ORDER REPLACEMENT LAMP
T
ype No.
Service Parts No.
POA-LMP53610 303 5826
Lamp Age
Normal :
Eco:
0100HOURS
0025HOURS
0158HOURS
Page 21
-21-
■ Optical Adjustments
[Before Adjustment]
- Input a 100% of black raster signal.
[R/G/B-CONTRAST ADJUSTMENT]
1 Loosen a screw A (Fig.1-1/1-2) on the polarized glass mounting
base which you intend to adjust.
2 Turn the polarized glass mounting base as shown in Fig.1-1 to
obtain the darkest brightness on the screen.
3 Tighten the screw A to fix the polarized glass mounting base.
Repeat steps 1 to 3 for remaining polarized glasses.
B-Polarized Glass
Mounting Base
R-Polarized Glass
Mounting Base
G-Polarized Glass
Mounting Base
A
A
A
Slot B
Fig.1-2
Fig.1-1
Polarized glass
mounting base
Main Board
A
Contrast adjustment
Before taking optical adjustments below, remove the Cabinet Top and Main Board following to the “Mechanical
Disassemblies”
Adjustments require a 2.0mm hex wrench and a slot screwdriver. When you adjust Condenser lens, Condenser
lens-out or Relay lens adjustment, you need to disconnect some connectors and FPC cables of LCD panels on the
main board.
Note: Do not disconnect connectors K8N, K8P and K8H on the main board, because the projector can not turn on
due to operate the power failure protection.
Page 22
1 Tu rn the projector on by a state of without FPC cables.
2 Project only green light on the screen.
3 Adjust the adjustment base of condenser lens assy to make color
uniformity in green.
1) If the shading appears on the left or right of the screen as
shown in Fig.2-1, loosen 2 screws A with the 2.0mm hex driver, and adjust the slot B to make color uniformity in green by
using a slot screwdriver.
2) If the shading appears on the top or bottom of the screen as
shown in Fig.2-2, loosen 2 screws C with the 2.0mm hex driver, and adjust the slot D to make color uniformity in green by
using a slot screwdriver
4 Tighten screws A and C to fix the Condenser lens unit.
Note:
The relay lens adjustment must be carried out after completing this
adjustment.
-22-
Optical Adjustments
Condenser Lens adjustment
Fig.2-2
y
x
Moving of Slot D
Slot D
C
a
b
a
b
Moving of slot B
Fig.2-1
Slot B
A
C
y
x
Green
Green
A
Page 23
-23-
Optical Adjustments
1 Tu rn the projector on by a state of without FPC cables.
2 Project green and blue lights on the screen.
3 Adjust the adjustment base of condenser lens-out assy to make
color uniformity in cyan.
1) If the shading appears on the left or right of the screen as shown
in Fig.3-1, loosen 1 screw A with the 2.0mm hex driver, and
adjust the slot B to make color uniformity in cyan by using a slot
screwdriver.
2) If the shading appears on the top or bottom of the screen as
shown in Fig.3-2, loosen 1 screw C with the 2.0mm hex driver,
and adjust the slot D to make color uniformity in cyan by using a
slot screw driver.
4 Tighten the screw A and C to fix the relay lens unit.
Fig.3-1
A
Slot B
a
b
b
Moving of slot B
a
Cyan
Fig.3-2
D
Moving of slot D
y
x
C
Condenser Lens-Out adjustment
y
x
Cyan
Page 24
1 Tu rn the projector on by a state of without FPC cables.
2 Project all of lights on the screen.
3 Adjust the adjustment base of relay lens assy to make color unifor-
mity in white.
1) If the shading appears on the left or right of the screen as shown
in Fig.4-1, loosen 1 screw A with the 2.0mm hex driver, and
adjust the slot B to make color uniformity in white by using a slot
screwdriver.
2) If the shading appears on the top or bottom of the screen as
shown in Fig.4-2, loosen 1 screw C with the 2.0mm hex driver,
and adjust the slot D to make color uniformity in white by using
a slot screwdriver.
4 Tighten the screws A and C to fix the relay lens unit.
Fig.4-1
A
Slot B
a
b
b
Moving of slot B
a
White
Fig.4-2
Slot D
Moving of slot D
y
x
C
y
x
Relay lens-Out adjustment
White
-24-
Optical Adjustments
Page 25
-25-
■ Electrical Adjustments
To enter the service mode
To enter the “Service Mode”, press and hold the MENU and IMAGE button on the projector at the same time for
more than 3 seconds. The service menu appears on the screen as follows.
To adjust service data
Select the adjustment item no. by pressing the e or d button, and change the data value by pressing the 7 or
8 button. Refer to the “Service Adjustment Data Table” for further description of adjustment item no. and data
value.
To exit the service mode
To exit the service mode, press the POWER ON-OFF button on the projector or remote control unit.
● Service Adjustment Menu Operation
IC351 on the main board stores the data for the service adjustments, and should not be replaced except for
the case of defective device.
If replaced, the re-adjustments are required following to
the “Electrical Adjustments”.
The data of lamp replacement counter is stored in the
IC351.
Please note that the lamp replace counter will be reset
when the memory IC (IC351) is replaced.
(Lamp replace counter can not be set to the previous
value.)
● Caution to memory IC replacement
When IC351 is replaced with new one, the CPU writes
down the default data of the service adjustments to the
replaced IC as the mentioned on the service adjustment table. As these data are not the same data as factory shipped data, it should be required to perform the
re-adjustments following to the “Electrical Adjustments”.
Please note that in this case the lamp replace counter
will be reset.
● Caution of Main Board replacement (in the case
IC351 is not defective)
When the main board is replaced, IC351 should be
replaced with the one on previous main board. After
replacement, it should be required to perform the readjustments following to the “Electrical Adjustments”.
In this case, the lamp replace counter can be kept the
value as before.
● Memory IC Replacement
Data value
Item No.
Service Mode
Computer
1 158
1.00
Page 26
-26-
[Adjustment Condition]
● Input signal
Video signal .......................... 1.0Vp-p/75Ω terminated, 16 steps gray
scale (Composite video signal)
Computer signal .................... 0.7Vp-p/75Ω terminated, 16 steps gray
scale pattern (SVGA)
Component Video signal ...... 0.7Vp-p/75Ω terminated, 16 steps gray
scale (Component video signal with
480p or 1080i format)
● Picture control mode .............. “STANDARD” mode unless otherwise
noted.
Note:
* Please refer to “Service Adjustment Menu Operation” for entering the service mode and adjusting the service
data.
● Circuit Adjustments
CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the follow-
ing adjustments except requiring the readjustments in servicing otherwise it may cause loss of performance and product safety.
Electrical Adjustments
16 steps gray scale pattern
After replacing the Power Board, PF.C. Board, readjust
the Output voltage adjustment as follows.
1. Connect a digital voltmeter to pins 1 (+) and 3 (-) of
K6D.
2. Adjust the voltage by using VR611 as following.
AC InputReading
230V 370V ±2V
Caution:
Be sure to connect the lamp when taking this adjustment.
Output Voltage adjustment
1. Set the lamp mode to “ECO” with the menu function.
2. Enter the service mode and select item no. “74”. Set
data value to “1”.
3. Connect a digital voltmeter to test point “TP12V1”
(+) and chassis ground (-). Select item no. “75”and
adjust the voltage to be 8.0 ±0.1Vdc by changing
the Data value.
4. Connect a digital voltmeter to test point “TP12V2”
(+) and chassis ground (-). Select item no. “76”and
adjust the voltage to be 9.0 ±0.1Vdc by changing
the Data value.
5. Select item no. “74” and set data value to “3”.
6. Connect a digital voltmeter to test point “TP12V1”
(+) and chassis ground (-). Select item no. “77”and
adjust the voltage to be 13.5 ±0.1Vdc by changing
the Data value.
7. Connect a digital voltmeter to test point “TP12V2”
(+) and chassis ground (-). Select item no. “78”and
adjust the voltage to be 13.5 ±0.1Vdc by changing
the Data value.
8. Select item no. “74” and set Data value to “0”, and
set the lamp mode to “Normal” with the menu function.
z Fan Voltage adjustment
* This adjustment is not required even if the power
board is replaced because this adjustment is carried
out before parts shipment.
White 100%
Black 100%
Page 27
-27-
Electrical Adjustments
1. Receive the 16-step grey scale computer signal with
Computer [Analog RGB] mode.
2. Enter the service mode.
3. Connect a digital voltmeter to test point “TP505R”
(+) and chassis ground (-).
4. Select item no. “1 and adjust the voltage to be 7.50
±0.1Vdc by changing the Data value.
5. Connect a digital voltmeter to test point “TP503G”
(+) and chassis ground (-).
6. Select item no. “2” and adjust the voltage to be 7.50
±0.1Vdc by changing the Data value.
7. Connect a digital voltmeter to test point “TP501B”
(+) and chassis ground (-).
8. Select item no. “3” and adjust the voltage to be 7.50
±0.1Vdc by changing the Data value.
x Signal Center adjustment
1. Receive the 16-step gray scale computer signal with
Computer [Analog RGB] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP3501”(+)
and chassis ground (-).
4. Select item no. “22” and adjust the amplitude “a” to be
10.0 ±0.1V by changing the Data value.
5. Select item no. “23” and adjust the amplitude “b” to be
3.8 ±0.1V by changing the Data value.
c PSIG adjustment
1. Receive the 16-step gray scale computer signal with
Computer [Analog RGB] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP505R”(+)
and chassis ground (-).
4. Select item no. “4” and adjust the amplitude “a” to be
minimum by changing the Data value.
5. Connect an oscilloscope to test point “TP503G”(+)
and chassis ground (-).
6. Select item no. “5” and adjust the amplitude “a” to be
minimum by changing the Data value.
7. Connect an oscilloscope to test point “TP501B”(+)
and chassis ground (-).
8. Select item no. “6” and adjust the amplitude “a” to be
minimum by changing the Data value.
v Gain adjustment [PC]
1. Receive the 16-step gray scale composite video signal with Video [Video] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP505R”(+)
and chassis ground (-).
4. Select item no. “4” and adjust the amplitude “a” to be
minimum by changing the Data value.
5. Connect an oscilloscope to test point “TP503G”(+)
and chassis ground (-).
6. Select item no. “
5” and adjust the amplitude “a” to be
minimum by changing the Data value.
7. Connect an oscilloscope to test point “TP501B”(+)
and chassis ground (-).
8. Select item no. “6” and adjust the amplitude “a” to be
minimum by changing the Data value.
b Gain adjustment [Video]
White Level
(a)
(a)
(b)
White Level
(a)
Page 28
-28-
Electrical Adjustments
1. Receive the 1 dot black & white pattern computer signal with Computer [Analog RGB] mode.
2. Enter the service mode.
3. Project only red light component to the screen.
4. Select item no. “19” and change data value to obtain
the minimum flicker on the screen.
6. Project only green light component to the screen.
7. Select item no. “20 and change data value to obtain
the minimum flicker on the screen.
8. Project only blue light component to the screen.
9. Select item no. “21” and change data value to obtain
the minimum flicker on the screen.
. Common Center adjustment
1. Receive the 16-step gray scale component video signal [480i] with Video [Y,Cr,Cb] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP505R”(+)
and chassis ground (-).
4. Select item no. “4” and adjust the amplitude “a” to be
minimum by changing the Data value.
5. Connect an oscilloscope to test point “TP503G”(+)
and chassis ground (-).
6. Select item no. “5” and adjust the amplitude “a” to be
minimum by changing the Data value.
7. Connect an oscilloscope to test point “TP501B”(+)
and chassis ground (-).
8. Select item no. “6” and adjust the amplitude “a” to be
minimum by changing the Data value.
n Gain adjustment [Component]
1. Receive the 16-step gray scale computer signal with
Computer [Analog RGB] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP505R”(+)
and chassis ground (-).
4. Select item no. “13” and adjust the amplitude “a” to
be 4.0 ±0.1V by changing the Data value.
5. Connect an oscilloscope to test point “TP503G”(+)
and chassis ground (-).
6. Select item no. “14” and adjust the amplitude “a” to
be 4.0 ±0.1V by changing the Data value.
7. Connect an oscilloscope to test point “TP501B”(+)
and chassis ground (-).
8. Select item no. “15” and adjust the amplitude “a” to
be 4.0 ±0.1V by changing the Data value.
m Gamma Gain adjustment [PC]
1. Receive the 16-step gray scale composite video signal with Video [Video] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP505R”(+)
and chassis ground (-).
4. Select item no. “13” and adjust the amplitude “a” to
be 4.0 ±0.1V by changing the Data value.
5. Connect an oscilloscope to test point “TP503G”(+)
and chassis ground (-).
6. Select item no. “14” and adjust the amplitude “a” to
be 4.0 ±0.1V by changing the Data value.
7. Connect an oscilloscope to test point “TP501B”(+)
and chassis ground (-).
8. Select item no. “15” and adjust the amplitude “a” to
be
4.0 ±0.1V by changing the Data value.
, Gamma Gain adjustment [AV]
White Level
(a)
(a)
(a)
Page 29
-29-
Electrical Adjustments
1. Receive the 16-step gray scale computer signal with
Computer [Analog RGB] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP503G”(+)
and chassis ground (-).
4. Select item no. “10” and adjust the amplitude “a” to
be 2.4 ±0.1V by changing the Data value.
⁄0 Signal Offset adjustment [PC]
[PC WHITE BALANCE ADJUSTMENT]
1. Receive the 16-step gray scale computer signal with
Computer [Analog RGB] mode.
2. Enter the service mode, select item no. “11” (Red) or
“12” (Blue), and change Data values respectively to
make a proper white balance.
[AV WHITE BALANCE ADJUSTMENT]
3. Receive the 16-step gray scale composite video signal with Video [Video] mode.
4. Enter the service mode, select item no. “11” (Red) or
“12” (Blue), and change Data values respectively to
make a proper white balance.
Confirm that the same white balance is obtained in
video and computer input.
⁄2 White Balance adjustment
If you find the color shading on the screen, please
adjust the white uniformity by using the proper computer and “Color Shading Correction” software supplied
separately. The software can be ordered as follows;
COLOR SHADING CORRECTION ver.. 3.0
Ser
vice Parts No.645 056 6288
NOTE ON WHITE UNIFORMITY
ADJUSTMENT
1. Receive the 16-step gray scale composite video signal with Video [Video] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP503G”(+)
and chassis ground (-).
4. Select item no. “10” and adjust the amplitude “a” to
be 2.4 ±0.1V by changing the Data value.
⁄1 Signal Offset adjustment [AV]
white level
(a)
white level
white level
(a)
white level
Page 30
-30-
Electrical Adjustments
● MAIN BOARD
Test Points and Locations
K8H
K8N
P
K8
TP12R
TP12G
TP12B
TP503G
TP504G
TP6241
TP6221
TP6201
TPHS
TP501B
K5G
TPVS
TP502B
TPDVS
TPDHS
K5B
IC301
IC501
IC401
K8U
K8A
IC801
IC811
K8B
TPV3148
IC3801
IC3101
TPV3143
TP3501
IC531
K5R
TP506R
TP3531
TP505R
TP12V1
TP12V2
Page 31
-31-
1R-VIDEOCNTM62392P/FP150150150
2G-VIDEOCNTM62392P/FP150150150✻ Video Center Adjustment
3B-VIDEOCNTM62392P/FP150150150
4R-SubGainCXD3526GG124124124
5G-SubGainCXD3526GG124124124✻ Gain Adjustment
6B-SubGainCXD3526GG124124124
7R-SubBrightCXD3526GG000
8G-SubBrightCXD3526GG000
9B-SubBrightCXD3526GG000
10G SIG-OFSTM62392P/FP120120120✻ Signal Offset Adjustment
11B SIG-OFSTM62392P/FP120120120✻ White Balance Adjustment
12R SIG-OFSTM62392P/FP120120120✻ White Balance Adjustment
13R-GammaGainCXD3526GG128128128
14G-GammaGainCXD3526GG128128128✻ Gamma Gain Adjustment
15B-GammaGainCXD3526GG128128128
16
17
18
19RVCOMM62392P/FP60
20GVCOMM62392P/FP60✻ Common Center Adjustment
21BVCOMM62392P/FP60
22SID1M62392P/FP60✻ PSIG Adjustment
23SID0M62392P/FP140
24SubBrightMatrix63626262
25SubColorMatrix0999
26SubTintMatrix32323232
27SubSharpnessMatrix15000
28SubBright(Video)MicronasN/A1614
29SubCont(Video)MicronasN/A5961
30SubColor(Video)MicronasN/A20702070
31SubTint(Video)MicronasN/A00
32YC DelayMicronasN/A6262
33SubSharpnessPW164N/A11
34V-Line Color Shading Correction Setting (R_OFFSET 1)CXD3526GG0R-Vertical Line Color Shading Correction
35V-Line Color Shading Correction Setting (R_OFFSET 2)CXD3526GG0
36V-Line Color Shading Correction Setting (R_OFFSET 3)CXD3526GG0
37V-Line Color Shading Correction Setting (R_OFFSET 4)CXD3526GG0
38V-Line Color Shading Correction Setting (R_OFFSET 5)CXD3526GG0
39V-Line Color Shading Correction Setting (R_OFFSET 6)CXD3526GG0
40V-Line Color Shading Correction Setting (R_OFFSET 7)CXD3526GG0
41V-Line Color Shading Correction Setting (R_OFFSET 8)CXD3526GG0
42V-Line Color Shading Correction Setting (R_OFFSET 9)CXD3526GG0
43V-Line Color Shading Correction Setting (R_OFFSET 10) CXD3526GG0
44V-Line Color Shading Correction Setting (R_OFFSET 11) CXD3526GG0
45V-Line Color Shading Correction Setting (R_OFFSET 12) CXD3526GG0
46V-Line Color Shading Correction Setting (G_OFFSET 1) CXD3526GG0G-Vertical Line Color Shading Correction
47V-Line Color Shading Correction Setting (G_OFFSET 2) CXD3526GG0
48V-Line Color Shading Correction Setting (G_OFFSET 3) CXD3526GG0
49V-Line Color Shading Correction Setting (G_OFFSET 4) CXD3526GG0
50V-Line Color Shading Correction Setting (G_OFFSET 5) CXD3526GG0
51V-Line Color Shading Correction Setting (G_OFFSET 6) CXD3526GG0
52V-Line Color Shading Correction Setting (G_OFFSET 7) CXD3526GG0
53V-Line Color Shading Correction Setting (G_OFFSET 8) CXD3526GG0
54V-Line Color Shading Correction Setting (G_OFFSET 9) CXD3526GG0
55V-Line Color Shading Correction Setting (G_OFFSET 10) CXD3526GG0
56V-Line Color Shading Correction Setting (G_OFFSET 11) CXD3526GG0
57V-Line Color Shading Correction Setting (G_OFFSET 12) CXD3526GG0
58V-Line Color Shading Correction Setting (B_OFFSET 1)CXD3526GG0B-Vertical Line Color Shading Correction
59V-Line Color Shading Correction Setting (B_OFFSET 2)CXD3526GG0
60V-Line Color Shading Correction Setting (B_OFFSET 3)CXD3526GG0
Initial
Item No. NameDevicePCYCbCrVideoDetail
NTSCPAL
Electrical Adjustments
● Service Adjustment Data Table
These initial values are the reference data written from the CPU
ROM to memory IC when replaced new memory IC. The adjustment items indicated with “✻” are required to readjust following
to the “Electrical adjustments”. Other items should be used with
the initial data value.
Page 32
-32-
61V-Line Color Shading Correction Setting (B_OFFSET 4)CXD3526GG0
62V-Line Color Shading Correction Setting (B_OFFSET 5)CXD3526GG0
63V-Line Color Shading Correction Setting (B_OFFSET 6)CXD3526GG0
64V-Line Color Shading Correction Setting (B_OFFSET 7)CXD3526GG0
65V-Line Color Shading Correction Setting (B_OFFSET 8)CXD3526GG0
66V-Line Color Shading Correction Setting (B_OFFSET 9)CXD3526GG0
67V-Line Color Shading Correction Setting (B_OFFSET 10) CXD3526GG0
68V-Line Color Shading Correction Setting (B_OFFSET 11) CXD3526GG0
69V-Line Color Shading Correction Setting (B_OFFSET 12) CXD3526GG0
70Color Shading Correction ONÅ^OFFCXD3526GG1
71LampLifeTimeRead Only
72BaudRate10;9600/ 1;19200/ 2;38400
73ShootOutMode00;Normal/ 1;Shoot out1/ 2;Shoot out2
FAN CONTROLRange✻ Fan Voltage Adjustment [No.74- No.78]
74Fan Speed ModeTempNode00-30:Auto Fan Control 1:Min 2:Mid 3:Max
75Fan1 Min DataTempNode500-127
76Fan2 Min DataTempNode750-127
77Fan1 Max DataTempNode224128-255
78Fan2 Max DataTempNode224128-255
79Temp LowTempNode3710-80
80Temp HighTempNode4530-80
81Fan1 Temp ErrorTempNode5230-80
82Fan2 Temp ErrorTempNode4730-80
83OverTempCountTempNode51-9
84SensorErrorCountTempNode51-9
85TempDeltaErrorCountTempNode51-9
86TempDeltaEnableRangeTempNode8048-16048: 3ºC - 160: 10ºC 0.0625ºC/step
87SamplingTempNode43-93:1.5sec - 9:4.5sec 0.5sec/step
88Cooling TimeTempNode30-6n x 30 sec.
89InitialLevelTempNode17080-255
90InitialTimeTempNode11-30
91IgnoreTempFailTempNode31-5
92Highland ModeTempNode00-1
93
KEY CONTROLRange
95KeyControlPermitation00.20: No key prohibtion, 1: RC key prohibition
POWER MANAGEMENT
354Power management test Mode00: Normal, 1: Test Mode
Initial
Item No. NameDevicePCYCbCrVideoDetail
NTSCPAL
Page 34
-34-
■ Chassis Block Diagrams
Chassis over view
B-PANEL G-PANELR-PANEL
B
IC501
IC1501
B-S&H
PSIG
IC3501
G
IC531
IC1531
G-S&H
PSIG
IC3531
IC561
IC1561
R
R-S&H
IC1822
BUFER
IC1823
BUFFER
AC
100~240V
LINE
FILTER
LAMP
LCD
IC401
DRDGDB
IC301
GRGGGB
CRYCB
BUFFER
IC8051,IC8061,IC8071
IC8201
G
R
DVI I/F
IC8001
&
DRIVER
SCAN
SYSTEM
CONVERTER
IC7201
MATRIX
A/D
B
TIMING
CONTROL
CONTROL
DHS
DVS
DCLK
D0-7
A0-A17
RC
TXD,RXD
IC801
FLASH
VSYNC
G-SYNC
IC5361
SYNC-SEP.
ROM
HSYNC
H
IC811
IC6301
SYNC-SW
IC5351
INVERTER
IC5341
G-SYNC
IC5331
DVI-SW
IC5321
PC/AV-SW
S-RAM
V
D/A
IC1803
PC/AV
DVI
PC/AV
D/A
IC1804
D/A
IC1805
D/A
IC1806
D/A
IC1813
D/A
IC1814
15.5V
ACTIVE
POWER
6V
FILTER
-5V
LAMP
BALLAST
FAN CONTROL
FAN CONTROL
FAN
FAN
DIGITAL RGB
PC/AV
RGB
PC1/PC2
IC5201
Cr/Pr
R
IC1201
ANALOG
RGB
IC3061
DVI-I
PC/AV
RGB-SW
Y/CV
G
RGB-SW
PC1/PC2
PC1
INPUT
B
H/V
Cb/Pb
IC201
RGB
ANALOG RGB
D-SUB
PC2
INPUT
IC221
H/V
OUTPUT
IC5311
PC1/PC2-SW
H/V
H/V
H/V
MNTOUT
PC1/PC2
RGB
Y
Y, C b ,Cr
Y
Cr,Cb/Pr,Pb
COMPONENT
Y, C
VIDEO
IC3101
C
IC2101
S-VIDEO/
C
S-VIDEO
VVS
VHS
DECODER
CV
SW
VIDEO-
Video
C-VIDEO
IC5001
AUDIO-AMP.
IC001
AUDIO-SW
L/R
PC
AUDIO
L/R
IC3851
CONT-2
SERIAL
Audio-Out
IC3801
CONT-1
RS-232C
POART
CONTROL
SERIAL
USB
R/C
IC3871
L/R
AV
OUT
AUDIO
SPEAKER
Page 35
-35-
Chassis Block Diagrams
Inputs & video signal processing stage
CRCRY
IC8201
A/D
<>
7
15
R
G
TP6201
TP6221
IC6221
IC6201
34
323028
IC5201
PC/AV RGB-SW
<AN5870>
3
1
7
5
Y
CR
TP12G
20
18
IC1201
PC1/PC2 RGB-SW
<AD8183>
1
3
5
8
B
R
MNTOUT
R
G
IC8051
BUFFER
D_R
DIGITAL RGB
DVI-I
IC8061
BUFFER
<THC63DV161>
14
12
IC3061
RGB ANALOG
<AD8074>
3,5,7
PC1
Y
D_G
IC8001
DVI-I/F
10
DIGITAL/
IC8071
BUFFER
IC201
3,5,7
ANALOG RGB
CB
D_B
TP12R
PC1/PC2PC/AV
2226
1
10,12,14
SW <AD8075>
RGB MONITOR
CB
22
B
TP6241
IC6241
13
TP12B
16
10
G
D-SUB
PC2
IC301
SYSTEM
11
12
B
IN/OUT
&
SCAN
CONTROL
CONVERTER
IC7201
MATRIX
G-SYNC
2
IC5361
<LA7217>
SYNC.SEP.
CB
H/V
Cr/Pr
COMPONENT
100
GCLK
GVS
113
19
26
TPVS
TPHS
14,7
IC6301
SYNC-SW
<TC74LCX244>
2
6
17
13
HS
818,3
IC5351
INVERTER
11
IC5341
SYNC.SEP
<BA7078>
2353
V
H
IC5331
DVI-SW
<TC4052>
5
14
9,5
H/V
SYNC I/O-SW
1
12
V
H
IC5321
PC/AV-SW
<BD7600>
8
3
V
H
1411313
IC5311
PC1/PC2-SW
<TC4053>
12,5
13,3
H/V
12,5
IC221
<TC4053>
14.4
VVS
57
9 10
2
9,11
9,10,11
55
VHS
TP3101
PC/AV
PC1/PC2
PC/AV
PC1/PC2
MNTOUT
VIDEO DECIDER
4,5,6
TP3102
TP3103
R G B
VS
6
3
611
4
13,3
Y
Cb/Pb
Video/
C-VIDEO
223
99
GHS
161
174
Y0 - Y7
50|31
IC3101
<VPC3230>
75
TPV3143
VIDEO/Y
6
IC2101
VIDEO-SW
<NJM2284>
8
VIDEO/Y
CB0 - CB7
73
TPY3147
Y
5
14,8
Y
C
S-VIDEO
71
TPV3148
C
3
1
C
Y
7,2,12
S-VIDEO/VIDEO
Page 36
-36-
Chassis Block Diagrams
LCD panel driving stage
K5B
TP501B
IC501
B-D/A S&H
<L3E06070>
B-LCD
PANEL
TP502B
B
IC501
B-D/A S&H
<L3E06070>
TP3501
IC3501
K5G
TP503G
PSIG
<LT1206>
IC501
B-D/A S&H
<L3E06070>
G-LCD
PANEL
TP504G
G
IC501
B-D/A S&H
<L3E06070>
TP3531
K5R
TP505R
PSIG
IC3531
<LT1206>
IC501
B-D/A S&H
<L3E06070>
B-LCD
PANEL
TP506R
R
IC501
B-D/A S&H
<L3E06070>
SIG_OFST
VCOM
IC3561
D/A
SIG_C
DBB0 - DBB9
DRE
DGE
DGB0 - DGB9
IC401
LCD DRIVER
<CXD3526>
DBE
TPDHS
IC301
SCAN
62
DHS
225
CONVERTER
DRB0 - DRB9
17
DVS
TPDVS
&
SYSTEM
180
CONTROL
RGT
HST
DWN
IC441
BUFFER
IC811
A1-A15
ENB
S-RAM
D0-D15
HCLK
VCLK
IC431
BUFFER
VST
BUFFER
IC801
FLASH
A2-A19
D0-D15
SHST
IC421
ROM
PRG
SH_RCLK
SH_GCLK
IC411
BUFFER
SH_BCLK
Page 37
-37-
Chassis Block Diagrams
Audio signal processing circuit
PC
AUDIO-IN
AV
AUDIO-IN
AUDIO
OUT
CONTROL
SYSTEM
IC301
3
147
R
R
R
L
L
L
D0-D7
D0-D7
PSCL
PSDA
1
12
AUDIO-SW
<TC4052>
5
14
Q011
Q012
IC1803
D/A
IC1804
D/A
10
3
IC001
13
Q013
12
16
<M62392>
2
3
9
Q014
11
13
IC3561
D/A
PC/AV_SW5
MUTE5
Q021
L
Q031
R
MUTE5
BUFFER
IC1351
19
9
7
VOL_CTL
AV BOARD
Q051
Q041
21-22 19-2017-18
MUTE5
PC/AV_SW5
MUTE: H
PC: H
AV: L
AUDIO-AMP.
<AN7513>
2
1
6
IC5001
8
4
K10T
K3T
MAIN BOARD
K10U
11
K3U
12
13
14
K8F
SP901
1
3
Page 38
-38-
Chassis Block Diagrams
Motor driving circuit
3
PSCL
147
PSDA
<M62392>
2
3
D/A
IC7801
6,7
FOCUS+,-
K8S
FOCUS
K6S
5
6
4,5
IC5551
FOCUS DRIVE
<BA6287>
K6U
1
7
1
2
M
<PW-164B>
CONTROL
SYSTEM
IC301
D0-D7
<MTC74LCX>
D/A
IC1805
11,12
ZOOM+,-
3
4
4,5
IC5501
ZOOM DRIVE
<BA6287>
1
7
MAIN BOARDPOWER BOARD
Logic Table of Drive ICs (IC5501,IC5551)
Input Output Operation
4 5 7 1
H L L H Forward drive
L H H L Reverse drive
H H L L Braking Mode
L L Open Open Standby Mode
ZOOM
3
4
1
1
2
M
Page 39
-39-
Chassis Block Diagrams
System controls
AV BOARD
IC201
RGB-MNT SW
3
K3TK10T
<AD8075>
4
IC221
<TC4053>
SYNC I/O-SW
IC001
Q041
21
<TC4052>
AUDIO-SW
22
IC5001
Q5001
19
<AN7513>
AUDIO-AMP.
20
Q011
Q012
S-VIDEO
34567
K3UK10U
RC
COMPONENT
8
51
RECEIVER
52
RC
K8G K28D
RECEIVER
RC BOARD
3
K8H
BOARD
LAMP BALLAST
BOARD
POWER
17-19
2-5
K8S
Q2701
Q2811
Q2821
Q2831
Q2841
MNTOUT_SW5
MUTE5
MUTE5
9
BUFFER
11
PC/AV_SW5
AV: L
PC: H
PC/AV_SW5
MNTOUT_SW5
7
3
IC1351
131715
IC1201
IC5201
<AD8183>
PC1/PC2-RGB SW
22
PC1/PC2_SW5
5
26
PC1: L
PC2: H
IC5311
9,10
IC5321
<AN5870>
PC/AV-RGB SW
2
<TC4053>
PC-SYNC SW
IC2101
7,2,12
<AN5870>
PC/AV-SYNC SW
10
Q5332
<NJM2284>
S/VIDEO-SW
IC5331
<TC4052>
PC/AV-SYNC SW
9
Q5331
DVI : L
S_SW
CB_SW
CR_SW
IC6301
<TC74LCX244>
PC/AV-SYNC SW
1
19
IC731
LAMP-OSC.
62
47
IC721
OP-AMP
2
3
IC711
Q722
COMP.
R/C
IC7801
<M62392>
FAN_CONT1
14315
D/A
2
PSDA
R/C
FAN_CONT2
MAIN BOARD
3
PSCL
BOARD
KEY SW
6-8 11-1417-189-1011-1221-2415-161 45
K8A
17-19
LED-On: H
KEY SW
POW_LED
TEMP_LED
READY_LED
1615141312
IC1803
SW
<TC74LCX574>
D0
D7
MUTE
LAMP_REP_LED
FANDRIVE
19
IC1804
<TC74LCX574>
S/CV_SW
PC/AV_SW
171615
SW
D8
D15
DPC_ON
<TC74LCX574>
PC_ON
17
IC1806
16
SW
D8
VPC_ON
ECO_SW
MNTOUT_SW
13
17
IC1813
<TC74LCX574>
D15
IC301
SYSTEM
CONTROL
<PW164B-10>
PC1/PC2_SW
LAMP_BST_SW
15
16
SW
D0
D7
POWER_FAIL
KEY SW
LAMP_ERR
8
2-4
IC1822
SW
<TC74LCX541>
D0
D7
S_SW
CB_SW
2
3
4
IC1823
SW
<TC74LCX541>
D8
CR_SW
7-9
D15
OPTION
PF_LAMPDOWN
79
2
LAMP_POW
Q301
IC341
5V_SW
146RC256
Q351
Q352
6
MSCL
MSDA
147
3
Page 40
-40-
Chassis Block Diagrams
Power supply & protection circuit
FN903
FN902
FN901
1
2
1
2
1
K6J
K6K
K6M
FAN CONTROL
CIRCUIT
Q65B
D652
7
Q662
Q691
6VS
8
2
Q65C
10
3
-5V
D653
6V
6VD
6V
AUDIO
AMP
ERROR
PC641
IC651
D654
PC642
D65B
9VMCI
Q65A
6
T651
D651
IC65A
Q661
15.5V
9
5
11
4
FN904
2
1
K6I
POWER_FAIL
FANDRIVE
2
6V
AUDIO
9VMCI
5V_SW
D661
K6R
K6S
10428613-14
29-3025-2615-169-10 11-12
AV BOARD
15.5V
6V
6VD
AUDIO
-5V
K8R
AUDIO
9VMCI
K8S
5V
AUDIO
K10T
13
14
K3T
5V
AUDIO
5V
6V
D5681
K10T
21
K3U
IC5681
3.3VD6VD
D6602
5VS5VS
22
5VD
-5V-5V
17
18
R6603
D5671
DVI BOARD
IC5671
5V6V
D5661
K10W
K3W
IC5661
3.3V
3.3VS
313235
3.3VS
5VS
36
21
5VS
-5V
22
-5V
39
40
5V DVI5V DVI
POWER AC
BOARD
IC904
SW902
LINE FILTER
IC631
POWER OSC.
<STR-Z5156>
1
1
2
K6E K6F
K6C
SWITCH
INTERLOCK
SWITCH
THERMAL
BOARD
AC CORD
8
Feedback
6
TSW611
IC611
P. F .CONTROL
<FA5502>
K6D
CB1
LAMP
BALLAST
BOARD
CB2
4
1
LAMP
Q651
IC711
COMP
3
2
OPE
IC721
6
IC731
LAMP
14
K8L
PC643
2
<M51204>
AMP
4
SW
7
POWER_FAIL
FANDRIVE
14
IC1804
SW-OUT
D8
D15
FANDRIVE
5V_SW
LAMP_BST_SW
POWER_FAIL
R6601
IC5281
Powe r Fail: L
12V15.5V
D5281
IC5641
D5641
2.5VS6VS
D5646
IC5646
IC5651
3.3VS
2.5VSP
D5651
5VS
D6601
MAIN BOARD
Q722
Powe r On: H
LAMP_BST_SW
15
IC1813
SW-OUT
D0
D7
Powe r On: H
LAMP_ERR
8
IC1822
SW-IN
D0
Lamp Error: H
D7
PF_LAMPDOWN
Error: L
79
2
5V_SW
LAMP_POW
Q301
Lamp-On: L
Power-On: H
146
IC301
SYSTEM CONTROL
<PW161B-10>
Page 41
-41-
Chassis Block Diagrams
Fan controlcircuit
FN906
SYSTEM CONTROL
FN905
1
2
D8
D15
<PW164B-10>
IC301
3
147
FN901
FN902
FN903
FN904
1
2
K8NK8P
IC1804
I/O-SW
PSCL
PSDA
K8S
K6J
1
2
K6K
1
2
K6M
1
2
K6L
1
2
K6S
37
38
35
36
19
FAN DR I VE
2
3
IC7801
D/A
<M62393>
D69D
D69C
D69B
15
14
D69A
Q69A
Q68Q
D68Q
POWER_FAIL
FAN_CONT1
FAN_CONT2
Q67Q
D67Q
POWER_FAIL
MAIN BOARD
D68D
K6S
K8S
D67D
POWER_FAIL
FAN_CONT2
FAN_CONT1
21-22 11-1219-2013-14
Q67A
Q68A
Q66A
FANDRIVE
IC671
3
IC681
3
IC8801
TEMP.
SENSOR
<LM76CH>
Q671
67
8
Q672
Q681
67
8
Q682
15.5V
POWER BOARD
SENSOR BOARD
IC4881
TEMP.
SENSOR
<LM76CH>
2121
K6S
53
K8S
Page 42
-42-
■ Troubleshooting
No Power
Reset switch
The microprocessor inside the projector may occasionally
malfunction and does not allow any controls. In this case,
press the reset switch on the rear panel with a sharp tool to
restart the projector.
- When all the LED indicators are not lighting, the symptom indicates that the primary power supply circuit
does not operate properly. Check the power primary circuit and parts as follow;
AC cord
F601 (Fuse)
Line filter board
SW902 (Thermal sw.) ......short in normal
SW902 opens when the surrounding temperature of the switch exceeds 100°C.
SW904 (Interlock sw.) ......short in normal
Check the lamp cover is fixed firmly. The projector cannot turn on with lamp cover removal.
This projector provides a function which can be specified a defective area simply by indicating the LEDs on the control panel. Connect the AC cord and press the Power button once and then check the LED indication.
- When the WARNING TEMP indicator (red) is flashing, the symptom indicates that the projector detected an
abnormal temperature risen inside the projector. Check the air filters and remove the object near the intake and
exhaust fan openings, and wait until the WARNING TEMP indicator flashing stops, and then try to turn on the
projector.
The internal temperature is monitored by sensor ICs, IC4801 on the Temp board and IC8801 on the Main board.
- When both of the TEMP WARNING (red) and READY (green) indicators are flashing at the same time,
the symptom indicates that the projector detected an abnormality in the cooling fan operation or in the power
supply secondary circuits. Check fan operation and power supply lines, and the driving signal status.
An abnormality occurs on the secondary power supply;
Check power supplies 15.5V, 6VS, 5VS, -5V. PF_LAMPDOWN signal (Error: L) is sent to pin 79 of
IC301when the power error occurs.PF_LAMPDOWN signal is output from pin 3 of IC711 driven by
POWER_FAIL (Error:L) signal on pin 2. When IC301, system control, detect s“L” on pin 79, IC301 sets the
projector into the standby mode and indicates error mode with the LEDs flashing.
An abnormality occurs on the fans operation;
Check FN901, FN902, FN903, FN904, FN905, FN906.
An abnormality occurs on the power failure detection circuit;
Check Q69A, Q68P, Q87P, D68P, D67P on the power board, IC711, and Q722 on the Main board.
An abnormality occurs on the drive signals;
5V_SW signal (Power-on: H) is output from pin 146 of IC301 to Q661, IC65A through Q301 on the Main
board and Q662, Q65B and Q65C on the Power board.
FANDRIVE signal (Power-on: H) is output from pin 14 of IC1804 to IC671 and IC681 through Q672 and
Q682 on the Power board.
LAMP-BST-SW signal (Power-on: H) is output from pin 15 of IC1813 to IC611 on the P.F. board through
Q651 and PC643 on the Power board.
LAMP_POW signal (Power-on: L) is output from pin 2 of IC301 to lamp ballast board through the lamp
switch circuit, IC711, IC721 and IC731.
- When the POWER indicator (red) is lighting, the
symptom indicates that the projector detected an
abnormality in the circuit but is not specified error.
Check the following;
Lamp cannot turn on, check following signals;
LAMP_ERR signal (Error: H) is sent from the
lamp ballast board and input to pin 8 of IC1822.
LAMP_POW signal (Power-on: L) is output from
pin 2 of IC301 to lamp ballast board through the
lamp switch circuit, IC711, IC721 and IC731.
Page 43
-43-
Troubleshooting
No Picture
No picture with all of
input sources
Check signal processing stage and LCD driving stage;
Check RGB S&H signals at test points TP501B, TP502B, TP503G,
TP504G, TP505R, TP506R.
Check PSIG signals at test points TP3501 and TP3531.
Check power supply circuit 15.5V SWD and peripheral circuit.
Check ICs IC501, IC531, IC561, IC1501, IC1531, IC1561, IC3501,
IC3531, IC401, IC301 and peripheral circuits.
Check DVI interface stage;
Check DVI receiver, IC8001, buffer ICs IC8051, IC8061, IC8071 and
peripheral circuit.
DVI switch signal, DPC_ON (DVI: L), is output from pin 15 of IC1804
and applied to IC5331 through Q5331.
No picture with PC1[DVI
digital] input source
No picture with PC1 [DVI
analog] input source
Check PC source selecting stage;
Check IC3061, RGB buffer, and peripheral circuit on the DVI board.
Check IC1201, PC1/PC2 RGB SW, and IC5311, PC1/PC2 SYNC-SW
and peripheral circuit.
PC1/PC2_SW5 signal (PC1: L) is applied on pin 22 of IC1201, and pins
9, 11 of IC5311, and output from pin 16 of IC1813 through IC1351,
buffer IC.
Check PC source selecting stage;
Check IC221, Sync sw, and peripheral circuit on the AV board. Check
MNTOUT_SW5 signal (PC2-Monitor-Out:H) is applied on pin 1 of
IC201 and pins 9, 10, 11 of IC221 on the AV board and output from
pin17 of IC1813 through IC1351, buffer IC.
Check IC3101, Video decoder, and IC7201, matrix and peripheral circuit.
Check IC1201, PC1/PC2 RGB SW, and IC5311, PC1/PC2 SYNC-SW
and peripheral circuit.
PC1/PC2_SW5 signal (PC1: L) is applied on pin 22 of IC1201, and pins
9, 11 of IC5311, and output from pin 16 of IC1813 through IC1351,
buffer IC.
No picture with PC2 [VGA
analog] input source
Check PC/AV source selecting stage and processing stage;
Check IC5201, PC/AV RGB SW, and IC8201, A/D conversion and
peripheral circuit.
Check IC5321, IC5331, PC/AV Sync selection IC, and peripheral circuit.
PC/AV_SW5 signal (PC: H) is applied on pin 26 of IC5201, pin 2 of
IC5321, and pin 10 of IC5331, and output from pin 16 of IC1804
through IC1351, buffer IC.
No picture with all of
computer input sources
Go to next page
Ye s
Ye s
Ye s
Ye s
Ye s
No
No
No
No
No
Check following steps.
Page 44
From previous
page
-44-
Troubleshooting
Check AV source selecting stage;
Check S-video signal (Y/C) on the AV board.
Check IC2101, Video/S-Video-sw, and IC3101, Video decoder, and
peripheral circuit.
S/CV-SW signal (S-Video:H) is applied on pins 2, 7 and 12 of IC2101,
output from pin 17 of IC1804.
No picture with S-VIDEO
input source
Check AV source selecting stage;
Check component signal (Y/Cr,Pr/Cb,Pb) on the AV board.
Check IC5201, PC/AV RGB SW, and IC8201, A/D conversion and
peripheral circuit.
Check IC2101, Video/S-Video-sw, and IC3101, Video decoder, and
peripheral circuit.
PC/AV_SW5 signal (PC: H) is applied on pin 26 of IC5201, output from
pin 16 of IC1804 through IC1351, buffer IC.
No picture with
Component input source
Check AV source selecting stage;
Check composite video signal (Video) on the AV board.
Check IC2101, Video/S-Video-sw, and IC3101, Video decoder, and
peripheral circuit.
S/CV-SW signal (Video:L) is applied on pins 2, 7 and 12 of IC2101, output from pin 17 of IC1804.
Check IC2101, Video/S-Video-sw, and IC3101, Video decoder, and
peripheral circuit.
PC/AV_SW5 signal (PC: H) is applied on pin 26 of IC5201, output from
pin 16 of IC1804 through IC1351, buffer IC.
Check IC001, audio-sw IC, and peripheral circuit. PC/AV_SW5
(PC:L) signal is applied on pin 10 of IC001 through Q041.
MUTE5 signal (Mute:H) is applied on pin 9 of IC001 output from
pin 12 of IC1803 through IC1351, buffer IC.
Is the audio signal
observed on the AUDIOOUT terminal?
Check Audio amp.and control circuit.
Check IC5001, audio-amp IC, and peripheral circuit. MUTE5
signal (Mute:L) is applied on pin 1 of IC5001, output from pin 12
of IC1803 through IC1351, buffer IC. VOL_CTL signal is applied on pin
4 for volume control, sent from pin 19 of IC3561.
Is the audio signal
observed on pin 6 of
IC5001?
Check audio output circuit.
Check speaker, connection of the terminals “K10T”, “K8F”.
Ye s
No
Ye s
No
Check the power supply (7VMCI) circuit, IC5501 and IC5551 and
peripheral circuit. Check Key SW board.
Both of ZOOM and
FOCUS motors are not
functioning.
No
Ye s
Check the ZOOM motor control circuit.
Zoom motor is controlled by signal ZOOM +, - output from pins
1 and 7 of IC5501. These control signals are driven by IC301,
system control IC, and applied to pins 4 and 5 of IC5501 through
the IC1804, I/O-sw IC.
Only ZOOM motor is not
functioning.
No
Ye s
Check the FOCUS motor control circuit.
Focus motor is controlled by signal FOCUS +, - output from pins
1 and 7 of IC5551. These control signals are driven by IC301,
system control IC, and applied to pins 4 and 5 of IC5551 through
the IC7801, D/A IC.
Only FOCUS motor is
not functioning.
No
Ye s
Check logic table of motor
drive ICs, IC5501, IC5551.
Check following steps.
Check following steps.
Page 46
-46-
■ Control Port Functions
● System Control & I/O Port Table
IC301PortA0I/OROMWELFor ICE
PortA1I/OROMWEHFor ICE
PortA2I/OBOOTWEFor ICE
PortA3I/ODDC_CKNVRAM I2C CLK for DDC
PortA4O5V_SWPower ON/OFFMainPower-ON:High
PortA5IMT_DATJudge 15KHz system15KHz:High
PortA6OIO_ResetInitialize I/OFixed Low
PortA7OLAMP_POWLamp-ON
PortB0I/OM_SCLIIC CLK
PortB1I/OM_SDAIIC DATA
PortB2I/OVIEWER_ONNot used
PortB3IPF_LAMPDOWNPowerFail Monitor
PortB4I/ODDC_DTNVRAM I2C DATA for DDC
PortB5I/OCARD_INNot used
PortB6I/OSCDTNot used
PortB7I/OW_LAN_INNot used
IC180312OMuteMute ON/OFFON:High
13OLAMP_REP_LEDLamp Replace LED Drive
14OREADY_LEDReady LED Drive
15OTEMP_LEDTemp Warning LED Drive
16OPOW_LEDPower LED Drive
17OKO3Main Key Switch
18OKO2Main Key Switch
19OKO1Main Key Switch
13OECO_SWNormal/Eco SelectionEco:High
14ODCLK_SWCXD3526 CLK ON/OFFON:High
15OUSB_ENNot used
16OVPC_ONSync select ON/OFF for MicronasON:Low
17OPC_ONSync select ON/OFF for AD9884ON:Low
18OAC_FILTFilter ON/OFF for PS215KHz:High
19OUSB_RSTNot used
IC181312ORCID_SW3Remote Control ID1
13ORCID_SW2Remote Control ID2
14ORCID_SW1Remote Control ID3
15OLAMP_BST_SWBoost ON/OFFON:High
16OPC1/PC2_SWPC1(RGB)/PC2(RGB) SelectionPC1(RGB):Low
17OMNTOUT_SWMonitor Out SelectionMonitor Out:Low
18OCXD_WP
NVRAM Write Protect for CXD3526Protect:High
19OEDIDENDDC Projector/PC SelectionProjector:Low
IC181412O
13O
14O
15OS/PRESETNot used
IC Ref. No Pin/Name I/OSignal NameFunctionNote
Page 47
16OCTSNot used
17ONot usedNot used
18OKEY_WENot used
19ODSINV_SWNot used
3ICB_SWComponent
4ICR_SWComponent
5ICLK/SDATANot used
6ILAGO_SONot used
7IOPTION1OEM Option
8IOPTION2OEM Option
9IOPTION3OEM Option
IC Ref. No Pin/Name I/OSignal NameFunctionNote
-47-
Control Port Functions
Page 48
-48-
■ Waveform
VIDEO-IN <TPV3143>HS signal <TPHS>
VS signal <TPVS>
DHS signal <TPDHS>DVS signal <TPDVS>
S&H-B <TP501B/TP502B>
S&H-G <TP503G/TP504G>S&H-R <TP505R/TP506R>
PSIG <TP3501>PSIG <TP3551>
Page 49
-49-
■ Cleaning
Cleaning with air spray
1. Remove the cabinet top following to “Mechanical
Disassemblies”.
2. 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 resinbased nozzle only. Be vary 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.
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.
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 Disassemblies”.
2. Remove the optical base top following to “Optical Unit
Disassemblies”. 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.
● PW164B-10 <System Control & Scan Converter, IC301>
IC Block Diagrams
● STR-Z2156 <Power Switching Control, IC631>
Page 58
-58-
IC Block Diagrams
● VPC3230D <Video Decoder, IC3101>
CIN
VIN1
VIN2
VIN3
VIN4
VOUT
RGB/
YCrCb
FB
RGB/
YCrCb
Analog
Front-end
AGC
2XADC
Analog
Component
Front-End
4XADC
Y/G
U/B
U/R
FB
Adaptive
Comb
Filter
NTSC
PAL
Processing
Matrix
Contrast
Saturation
Brightness
Tint
Colour
Decoder
NTSC
PAL
SECAM
Saturation
Tint
Y
Cr
Cb
FB
Y
Cr
Cb
Mixer
Y
2DScaler
Cr
Contrast
Cb
Brightness
Peaking
Clock
Gen.
20.25MHz
RIP
2
CBus
I
2
I
CBus
Output
Formatter
ITU-R656
ITU-R601
Memory
Control
Sync
+
Clock
Generation
YOUT
Cr,Cb
OUT
YCOE
FIFO
CNTL
CLClock
HSync
VSync
AVO
Page 59
MB3-SU4000, MB3-SU2500
-59-
■ Electrical Parts List
Product safety should be considered when a component replacement is made in any area of a projector.
Components indicated by a ! mark in this parts list and the circuit diagram show components whose value have special significance to product safety. It is particularly recommended that only parts specified on the following parts list be
used for components replacement pointed out by the mark.
● Read Description in the parts list
Read description in the Capacitor and Resistor as follows:
CAPACITOR
CERAMIC 100P K 50V
Rated Voltage
Tolerance Symbols:
Less than 10pF
A : Not specified B : ±0.1pFC : ±0.25pF
D : ±0.5pFE : +0 -1pFF : ±1PF
G : ±2pFH : +0.1 -0pF L : +0 -0.1pF
R : ±0.25 -0pFS : +0-0.25pF
More than 10pF
A : Not specified B : ±0.1%C : ±0.25%
D : ±0.5%F : ±1%G : ±2%
H : ±3%J : ±5%K : ±10%
L : ±15%M : ±20%N : ±30%
P : +100-0%Q : +30-10% T : +50-10%
U : +75-10%V : +20-10% W : +100-10%
X : +40-20%Y : +150-10% Z : +80-20%
These schematic diagrams and printed wiring board drawings are part of the
service manual original for chassis No. MB3-SU4000, MB3-SU2500 models
PLC-SU40, PLC-SU25.
File with the service manual No. SM5110451.
Note:
All the information of part numbers and values indicated on these diagrams are at the beginning of
production. To improve the performance, there may be some differences to the actual set. When you
order the service parts, use service parts code mentioned on the parts list in this service manual.
Page 90
A2
MB3-SU4000, MB3-SU2500
■ Parts description and reading in schematic diagram
1. The parts specification of resistors, capacitors and
coils are expressed in designated code. Please check
the parts description by the following code table.
2. Some of transistors and diodes are indicated in mark
for the substitution of parts name. Please check the
parts name by the following code table.
3. Voltages and waveforms were taken with a video color
bar signal(1Vp-p at 75 ohms terminated) and controls
to normal.
4. Voltages were taken with a high-impedance digital
voltmeter.
Capacitor Reading
Example 2000 K K 1000 BG
Characteristic
Example 160
E M 10
Capacitance value
Excepting electric capacitors, all
capacitance values of less than 1
are expressed in µF and more
than 1 are in pF.
Tolerance
Type
Rated voltage
Resistor Reading
Example 1/2 D J 10K B
Characteristic
Example6W K 8.2
Example 1/2 C K 1M
Resistance value
Tolerance (see below table)
Material (see below table)
Rated wattage (W)
Note: Resistor which is indicated with resistance value only are
1/6W carbon resistor. Resistor which is indicated with material, tolerance and value are 1/4W rated wattage.
Material table
Mark Material
DCarbon
NMetal film
SOxide metal film
CSolid
GMetal glaze
WWire wounding or cement
HCeramic
FFusible
Tolerance
Inductance value
Manufacture code
Unique code
MarkTolerance (nH)MarkTolerance (%)
C±0.25G±2
D±0.5J±5
S±0.3K±10
A±0.2L± 15
M± 20
Diode/Transistor Type Reading
Diode
Mark Type number
R1S2076A,1S2473,1N4148
AA 1S2076A,1S2473,1SS133,1N4148
Transistor
(1) NPN type
MarkType number
--2SC5362SC945A2SC18152SC1740S
ADNF, NGPA, QAY, GRQ, R, S
AENF, NGPA, QA, RAO, Y, GRQ, R, S
(2) PNP type
MarkType number
--2SA6082SA564A2SA10152SA933S
ABNFRY, GRR
ACNFQ, RO, Y, GRQ, R
(3) Chip type
MarkType number
--2SA1179/N2SA1037K 2SA1037AK 2SC2812/N 2SC2412K
AJM6, M7R, SR, S
AHL6, L7R, S
Page 91
A16
MB3-SU4000, MB3-SU2500
■ Pin description of diode, transistor and IC
● Diode
● Transistor/FET
● IC
FET
● Diode
K
●Transistor/FET
A
K
A
K
AA
A
KK
A
K
K
K: Cathode
A: Anode
A
C
B
C
E
● IC
1
Index
C1
3
2
E
C2
Vdd
1
C1
C2
B1B2
E
B2
GND
C
E
E
2
C
E
B
C
3
E
B
B
2
3
1
C
B
B1
1
C1
CBE
C2
B2
E
3
2
C
BE
B1
RESET
Index
1
2
N
1
2
N
C2
E2C1
B1
B2
B1
B2
(IN)
E1
1
(GND)
2
4
5
6
Index
E1
C1
C2
E2
3
(OUT)
C: Collector
B: Base
E: Emitter
G
3
2
1
Index
D: Drain
G: Gate
S: Source
S
G
D
S
D
3
21
5
4
Index
N
1
Index
Index
Index
N
1
N
1
N
1
Index
N
1
N
1
Index
Page 92
Diagrams & Drawings (MB3A)
Page 93
■ Schematic Diagrams
A3SCH_MB3A
CAUTION
Components indicated by a mark ! in this schematic diagram have the special
significance in the safety. It is therefore, particularly recommended that the replacement of those parts must be made by exactly the same parts.Must be used with a
specified fuse. Unauthorized substitutions may result in fire or accident.
This projector is isolated from AC line by using the internal converter transformer.
Please pay attention to the following notes in servicing.
1. Do not touch the part on hot side (primary circuit) or both parts on the hot and
cold sides (secondary circuit) at the same time.
2. Do not shorten the circuit between hot and cold sides.
3. The grounding lead must be connected to the ground of the same circuit when
measuring the voltages and waveform.
! CAUTION:
Fuse must be used with the specified part number.
Unauthorized substitutions may result in fire or accident.