Panasonic PT-LW362 / PT-LW312 / PT-LB412 / PT-LB382 / PT-LB332 (serv.man4) Service Manual ▷ View online
-33-
Disassembly / Replaced Parts
Optical block Condenser lens (OUT)
Fans
MAIN board
Optical
adjustment
Optical center adjustment
Electrical adjustment
Fan voltage adjustment
Panel type check and setting
Flicker adjustment
Keystone offset adjustment
EEPROM data transfer *1
Model no. setting
Serial No. setting
Note:
*1 When the EEPROM data transfer has been taken, the adjusted data listed below will be transferred from the
original board to new board.
- Service adjustment data (Fan voltage adjustment/Panel type setting/Flicker adjustment)
- Used time (Projector used time/Lamp used time)
- Color shading correction data
- Gamma correction data
Adjustments after parts replacement
: Adjustment
: Check
Adjustment
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Optical adjustment
1 Adjust the condenser lens (OUT) to obtain a completely white
screen.
1) In case the shadow appears on the left or right edge of the
screen. Loosen 1 screw A and move the condenser lens unit
right or left to disappear the shadow on the screen. (Fig2-1)
2) In case the shadow appears on the top or bottom edge of the
screen. Loosen 2 screws B and move the condenser lens unit
upper or lower to disappear the shadow on the screen. (Fig.2-2)
2. Tighten screws A and B to fix the condenser lens unit.
Optical center adjustment
Fig. 2-2
Completely
white screen
Completely
white
screen
Fig. 2-1
a
b
y
x
x
B
B
[Before]
- Input a 100% white signal.
y
a
A
b
Before taking optical adjustments, remove the cabinet top following the "Mechanical Disassembly".
Tools: a hex wrench and a slot screwdriver.
Note: Do not disconnect connectors on the main board, because the projector cannot turn on due to
operate the power failure protection.
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Enter service mode.
To enter the
"Service Mode", press and hold the MENU button and button on the projector for more than
3 seconds. The service menu appears on the screen as follows.
To adjust service data
1. Select the adjusting items "Group", "No." or "Data" by pressing the MENU button repeatedly. The red cursor will
move to show the selected item.
2. To change the value of selected item, press the or button repeatedly. Refer to the "Service adjustment
data table" for further information.
Exit service mode.
Press
to exit the service mode.
Service adjustment menu operation
Electrical adjustment
Service Mode PANASONIC
Input
Input
Computer 1
Image Dynamic
Group
Group
No.
Data
200
80
+2
Ver.
1.00 XXXXX
Data value
Item no.
Group no.
Firmware version
-36-
Electrical adjustment
Circuit adjustment
CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the
following adjustments except requiring the readjustments in servicing otherwise it may cause
loss of performance and product safety. Before adjustment, please turn on the projector for
more than ten minutes.
WARNING: USE UV RADIATION EYE AND SKIN PROTECTION
DURING SERVICING
.
CAUTION: To prevent suffer of UV radiation, those adjustments
must be completed within 25 minutes.
1. Fan voltage adjustment
Equipment
Digital voltmeter
1. Enter the service mode.
2. Connect the digital voltmeter to the test points listed
below.
3. Select Group no. 250, No. 0 and change the Data
value to adjust the reading of voltmeter to be
specified value.
4. Adjust the remaining adjustments of the No. 1 to 5
listed below.
Group-No. Test Points
Adjustment value
250 - 0
FAN-A1
4.0 ±0.1Vdc
250 - 1
FAN-A1
12.5 ±0.1Vdc
250 - 2
FAN-B1
4.0 ±0.1Vdc
250 - 3
FAN-B1
12.5 ±0.1Vdc
250 - 4
FAN-C1
4.0 ±0.1Vdc
250 - 5
FAN-C1
12.5 ±0.1Vdc
2. Panel type check and setting
* Before setting, check which type of Optical block is
used by the projector according to the "Optical block
removal" chapter in Optical Parts Disassembly.
1. Enter the service mode.
2. Optical block type check
Select Group 290 and No. 0 to check the following
values;
Data "0"
: L-type Optical block
Data "20"
: R-type Optical block
If the installed type of Optical block is different
from the set display mode, perform the following
procedures.
3. Optical block type mode setting
Select Group 290 and No. 1, set the Data value
between 10 and 0 or 20 according to the Optical
block type. When the value reaches 0 or 20, it will
return to 10.
3. Flicker adjustment
Input signal No signal
1. Enter the service mode.
2. Select Group No.30 and change Data value as
follows. Obtain the minimum screen flickering value by
adjusting the value.
Group-No. Adjustment
30 - 3
Red flickering
30 - 4
Green flickering
30 - 5
Blue flickering
4. Keystone offset correction
Input signal No signal
1. Put the projector on a horizontal place with the
adjustable feet being minimum range and then enter
the service mode.
2. Select Group 102, No.3 and set data value from 0 to 5.
3. By pressing the INPUT/ENTER button, the Keystone
Offset adjustment will start.
4. When it has completed, the "OK" message will
appear on the screen.
5. By pressing any button on the projector or the
remote control, the "OK" message will disappear.
(Data value of Group 102, No.3 will be back to 0 for
initial value.)
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