Panasonic PT-DZ770U / PT-DZ770E (serv.man8) Service Manual ▷ View online
DIS-8
4. Unscrew the 4 screws and release the block of Intake Air Duct and Filter Base.
5. Unscrew the 8 screws and remove the Analysis Block.
2. 9. Removal of DMD Block
1. Remove the A-P.C.Board block according to the steps 1 through 3 in the section 2.3. "Removal of A-P.C.Board Block".
2. Unscrew the 2 screws and remove the Metal Partition (front).
3. Unscrew the 5 screws and remove the Lens Cover.
Filter Base
Intake Air Duct
Analysis Block
Metal Partition (front)
Lens Cover
Analysis Block
DIS-9
4. Unscrew the 4 screws and remove the Filter Base.
5. Unscrew the 2 screws and release the Reserve Tank.
6. Unscrew the 4 screws and release the DMD Block.
7. After liquid cooling unit reassembling, check whether a pipe and a tube do not have twist and bending.
(Refer to the next page)
8. If an assembly of this projector is completed, please check the operating of the liquid cooling unit.
(Refer to the next page)
Filter Base
DMD Block
Reserve Tank
Radiator
DMD Block
* DMD block and the liquid cooling unit can not be separated.
DIS-10
●
After liquid cooling unit reassembling, check whether a pipe and a tube do not have twist and bending.
Please make positioning of pipes and tubes have to be the same as this picture, otherwise the bending
or twisting happens which cause a temperature error or a shutdown.
●
If an assembly of this projector is completed, please check the operating of the liquid cooling unit
according to the following procedure.
1) Turn on the projector and the lamp stays lit at least 15 minutes.
2) Select sub menu "STATUS" of the main menu "PROJECTOR SETUP".
3) Check difference in temperature of "INTAKE AIR TEMP" and "OPTICS MODULE TEMP".
Liquid Cooling Unit works normally if it satisfy the following relations.
* If there is more than 20 ℃ temperature difference, please recheck the installation
state of the liquid cooling unit and piping tube.
ROJECTION IMAGE
BLUE (No Signal)
[ OPTICS MODULE TEMP. ] － [ INTAKE AIR TEMP. ] ＜ ２０℃
LAMP SELECT
DUAL
LAMP POWER
HIGH
CONTRAST MODE
DEFAULT
No good
No bending
Caution of the DMD block reassembly
Operational check of Liquid Cooling Unit
Twist tolerance level
* When a tube is twisted and bend, turn a
pipe in the tolerance level and adjust it.
pipe in the tolerance level and adjust it.
Within 120°
Positioning of pipes and tubes have
to be the same as this picture.
to be the same as this picture.
DIS-11
2.10. Removal of Mechanical shutter
1. Remove the A-P.C.Board block according to the steps 1 through 3 in the section 2.3. "Removal of A-P.C.Board Block".
2. Unscrew the 2 screws and remove the Metal Partition (front).
3. Unscrew the 5 screws and remove the Lens Cover.
4. Unscrew the 2 screws and remove the Mechanical Shutter.
6. When changed a mechanical shutter, please initialize a shutter counter in the following procedure.
1) Setting to service mode.
2) Select sub menu "INITIALIZE" of the main menu "PROJECTOR SETUP", and input a security password.
3) Select "SHUTTER COUNTER" and click an "OK" button and initialize it.
Metal Partition (front)
Lens Cover
Mechanical Shutter
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