SANYO PLV55WHD1 (2/3) User Manual
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IC836 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, it should be performed the re-adjustments
following to the “Electrical Adjustments”.
The data of lamp replacement monitor timer is stored in
the IC836.
Please note that the lamp replace counter is reset
when the memory IC (IC836) is replaced.
(Lamp replace counter can not be set to the previous
value.)
● Caution to memory IC replacement
When IC836 is replaced with new one, the CPU writes
down the default data of the service adjustments to the
replaced IC, refer to 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
IC836 is not defective)
When the main board is replaced, IC836 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
Contrast Adjustment
R-Contrast adjustment ●❍ ●
G-Contrast Adjustment ●❍ ●
B-Contrast adjustment ●❍ ●
Condenser lens adjustment ❍❍
Relay lens adjustment ❍❍
Picture image adjustment ❍❍ ●●
Picture focus adjustment ❍❍ ●●
Output voltage adjustment ❍
Fan minimum voltage adjustment ●
TV sound level adjustment ●
TV stereo separation adjustment ●
TV video level adjustment ●
Common center adjustment ●●
Panel luminance adjustment ❍❍
White balance adjustment ❍❍
Color shading correction ❍❍
● : Adjustment necessary ❍ : Check necessary
Disassembly / Replaced Parts
LCD/
Prism
unit
Opti-
cal
unit
Polarized glass
RGB
Optical Adjustments
Electrical Adjustments
Main
Board
Screen
and
mirror
Powe r
Board
Digital
Board
Projec
-tion
lens
After replacing electrical parts and optical parts, electrical adjustments and optical adjustments are required.
■ Adjustments after Parts Replacement
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Note: The connector K18U is for the lamp cover switch, so you should short SW1861 on the Cover SW board.
Or you should short between 1 pin and 3 pin of K18U.
Before taking optical adjustments, remove the optical / chassis unit, front panel unit, key unit, digital unit following to
the “Mechanical Disassemblies”
Note: Do not disconnect connectors on the main board, except for K01L, K01R, K35R, K35G, or K35B, because
the LCD Projection TV can not be turned on due to operate the power failure protection.
OPTICAL / CHASSIS UNIT
● Preparation for Adjustments
LAMP COVER SWITCH
(SW1861)
Joint Board " K18U
Joint Board
Main Board " K8S "
Cover SW Board
Cover SW Board " K18S "
K18U
■ Optical Adjustments
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Optical adjustments
Note:
If the picture is left / right reversed on a screen, you can
select front or rear projection for your convenience.
Rear function
1. Enter the service mode.
2. Select item no. "400" and change data value to select
a direction of projection.
Item no. Adjustment value Function
400 0 Front projection
1 Rear projection
3. Exit the service mode.
---
4. After servicing, this item should be set to default
value = 1.
Note: Service mode is refer to "Service Adjustment
Menu Operation".
Front function
Overview for Servicing (an example)
● Rear - Front Project SW
Warning!
Do not use Optical/chassis unit with inclining.
It may result in malfunction of the LCD Projection TV
Screen
Mirror
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Optical adjustments
Adjustment of optical components location
Blue mirror, Condenser lens, Relay lens and contrast adjustment operate it from a back side.(Item1-1~1-3)
(Remove the Optical/Chassis unit from the Cabinet)
Picture image and focus adjustment operate it from a front side.(Item 2-1~2-3)
(An optical unit must be fixed.)
(Install the cabinet bottom cover.)
Projection lens
FRONT VIEW
(2-2) Vertical centering
adjustment
(2-1) Horizontal centering
adjustment
(2-3) Picture focus adjustment
Picture image and focus
adjustment
(1-3) Contrast adjustment
(1-1) Relay lens adjustment
(b)
(a),(c)
(1-2) Condenser lens
adjustment
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Optical adjustments
Optical components adjustments procedure
When adjusting optical components, adjust each adjustment item in numerical order.
Incorrect adjustment steps may produce improper adjustment. The items adjusted correctly can
be omitted from the steps.
Pre-adjustment
(a) Condenser lens setting
(b) Relay lens adjustment
(c) Condenser lens adjustment
1. Optical system adjustment (Optical axis adjustment)
(1-1) Relay lens adjustment
(1-2) Condenser lens adjustment
(1-3) Contrast adjustment (Polarized glass adjustment) R,G,B
2. Picture image and focus adjustment
(2-1) Horizontal centering adjustment
(2-2) Vertical centering adjustment
(2-3) Picture focus adjustment
When the Optical unit is disassembled, the pre-adjustment is necessary.
The pre-adjustment can be omitted usually.
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Optical adjustments
(b) Relay lens pre-adjustment
Loosen the 2 screws I and screw K.
Adjust the slot J to make shading(Cyan) appears on the right of the
screen as shown in figure. (The same amount as red is appeared on
the other side.)
Adjust the slot L to make shading(Cyan) appears on the bottom of the
screen as shown in figure. (The same amount as red is appeared on
the other side.)
Tighten 2 screws I and screw K.
Optical Pre-adjustment
Tu rn the LCD projection TV on by a state of without FPC cables.
(a) Condenser lens pre-adjustment
Loosen the 2 screws A and 2 screws C.
Adjust the slot B to make shading(Red) appears on the right of the
screen as shown in figure.
Adjust the slot D to make shading(Red) appears on the bottom of the
screen as shown in figure.
(The screws are tightened later. The screws are tightened in step-d)
White
Shade (Red)
Screw A
Slot D
Screw C
Slot B
Shade (Cyan)
White
Shade (Red)
Screw I
Slot J
Screw K
Slot L
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Optical adjustments
(c) Condenser lens pre-adjustment
Adjust the slot B to make color uniformity in white.
(Shading disappears on the right of the screen. Red and Cyan)
Adjust the slot D to make color uniformity in white.
(Shading disappears on the bottom of the screen. Red and Cyan)
Tighten 2 screws A and 2 screws C.
Shade (Cyan)
White
White
Slot D
Screw A
Screw C
Shade (Red)
Slot B
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Optical adjustments
1-1. Relay lens adjustment
1. Turn the LCD projection TV on by a state of without FPC
cables.
2. Adjust the adjustment base of Relay lens unit to make
color uniformity in white.
a) If the shading appears on the left or right of the screen
as shown in figure, loosen 2 screws A with the ball allen
wrench, and adjust the slot B to make color uniformity in
white by using a slot screwdriver.
b) If the shading appears on the top or bottom of the
screen as shown in figure, loosen screw C with the ball
allen wrench, and adjust the slot D to make color uniformity
in white by using a slot screwdriver.
3. Tighten 2 screws A and screw C to fix the condenser lens
unit.
Shade
White
White
Shade
White
White
Screw A
Slot D
Screw C
Slot D
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Optical adjustments
1-2. Condenser lens adjustment
1. Turn the LCD projection TV on by a state of without FPC
cables.
2. Adjust the adjustment base of Condenser lens unit to make
color uniformity in white.
a) If the shading appears on the left or right of the screen
as shown in figure, loosen 2 screws A with the ball allen
wrench, and adjust the slot B to make color uniformity in
white by using a slot screwdriver.
b) If the shading appears on the top or bottom of the
screen as shown in figure, loosen 2 screws C with the
ball allen wrench, and adjust the slot D to make color unifor-
mity in white by using a slot screwdriver.
3. Tighten 2 screws A and 2 screws C to fix the condenser
lens unit.
Shade
White
White
Shade
White
White
Screw A
Slot D
Screw C
Slot B
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Optical adjustments
1-3. Contrast adjustment (R,G,B, polarized glass)
Screw-A
Slot-B
R, G and B Contrast adjustment :
1. Tu rn the LCD projection TV on and input a 100% of black raster
signal (0% of white raster signal).
2. Loosen screw A on the polarizer unit which you intend to adjust
using ball allen wrench.
3. Turn the polarized glass mounting base (slot B) by using a slot
screwdriver and adjust the brightness on the screen to the low-
est level of black.
4. Tighten the screw A to fix the polarizer unit.
5. Adjust the polarizer unit of other colors.
(Repeat steps 2 to 4.)
R-Polarized glass
mounting base
Slot B
Screw-A
Slot-B
Screw A
Screw A
G-Polarized glass
mounting base
Slot B
Screw A
Slot B
B-Polarized glass
mounting base
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Optical adjustments
2
Picture Image and focus adjustment (Projection lens adjustment)
Screw-A
Focus ring-E
Adjustment Cam-B
Adjustment Cam-C
Screw-D
Screw-A
Projection lens
Remove the Front cover unit, remove the Front
panel unit and remove the Optical cover.
Adjustment area
Install all parts on a back side.
Before adjustment
1. Turn the LCD projection TV on and display grid
pattern or circular pattern on the screen.
2. Be sure to fixed the Optical / Chassis unit with 3
screws to the cabinet.
Install all parts on a back side, otherwise it may
cause lose of performance of Optical
Adjustment.
(Refer to mechanical disassemblies.)
3. Remove the Front Cover unit from the cabinet
bottom.
4. Remove the 3 screws F and remove the Front
panel unit.
5. Remove the Optical Cover.
(Refer to mechanical disassemblies.)
6. When adjust the picture image (horizontal centering and vertical centering) , loosen the 4 screws
A of the lens shift unit.
7. When adjust the picture focus, loosen the focus
fixed screw D of the projection lens.
Front cover
F
F
F
Optical cover
Front panel
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Optical adjustments
2-1. Horizontal centering adjustment
When the picture is shifted to right or left, adjust the picture horizontally.
1. Loosen the 4 screws A from the lens shift unit.
2. Project the circular pattern on screen.
3. Turn the adjustment cam B to right or left and adjust the position to
project the picture on just center of the screen.
4. Tighten the 4 screws A.
Picture image movement
Horizontal centering
Screw-A
Screw-A
Adjustment cam-B
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Optical adjustments
2-2. Vertical centering adjustment
When the picture is shifted to right or left, adjust the picture vertically.
1. Loosen the 4 screws A from the lens shift unit.
2. Project the circular pattern on screen.
3. Turn the adjustment cam C to right or left and adjust the position to
project the picture on just center of the screen.
4. Tighten the 4 screws A.
Picture image movement Vertical centering
Screw-A
Screw-A
Adjustment cam-C
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Optical adjustments
2-3. Picture focus adjustment
When the picture is off focused, adjust the picture focus.
1. Loosen the Projection lens focus lock screw D and turn the focus ring
E for best focus.
Be sure to tighten the Projection lens focus lock screw D and fix the
Projection lens after adjustment.
Adjust center part and four corners on
the grid pattern to sharp focus.
1
4
5
2
3
Focus ring-E
Turn the Focus ring-E
Focus lock screw-D
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● Service Adjustment Menu Operation
Remote Control
Side Control
◆ To enter service mode
To enter service mode, press and hold the "INFO" button on the remote control, then press the "VOL(–)" button on the side control. As shown in a figure,
the service mode display appears on the screen.
◆ To adjust service data
Adjust service data using the following control buttons on the LCD projection
TV or the remote control.
– "CHANNEL UP" ..........................................An item number increases.
– "CHANNEL DOWN" ..................................An item number decreases.
– "POINT RIGHT" or "VOLUME (+)" ............An adjustment value increases.
– "POINT LEFT" or "VOLUME (–)" ..............An adjustment value decreases.
◆ To exit service mode
To quit the service mode, press the "POWER ON/OFF" button only once on
the LCD projection TV or the remote control.
Data value
Item No.
Temperature
Fan rotation speed
Note :
This part of display is available at the service mode No.600s.
■ Electrical Adjustments
w
q
e
VOL(-)
Normal Mode
+
INFO
Service Mode
Service Mode
INPUT
VOLUME
CHANNEL
VOL(-)
w
INFO
q
POWER
e
Service Mode Display
NO 0 Data 105
TA TB TC
2662 3237 3050
F1 F2 F3 F4
80 100 100 100
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