Panasonic PT-EZ770Z

INF-22
SECTION 1 SERVICE INFORMATION
5. 2. Service
5. 2. 1. Supporting Methods
The basic service policy is shown below.
Repaircontents Applied parts
Block replacement
P.C.Board replacement
- Analyses block (* Specified components are replaced)
- Optical Block
- [P]-P.C.Board (Specified components are replaced)
- [BQ]-P.C.Board
- Iris unit
- Mechanical shutter
Replacedbydiscretecomponents Other electrical parts and mechanism parts
5. 2. 2. Repair
1. Since very strong light is leakage from the surroundings of optical block, when checking or adjusting the projector with top
cabinet removal, ware the UV protection glasses to protect the UV light.
2. Before repairing, make sure to turn off the main power and disconnect the power plug from the power outlet.
* When replacing the print board, the internal electrical parts can be broken by the static electricity of clothes or human
body. Please take care in static electricity, use an antistatic wrist strap or wear the anti-static electricity gloves.
3. After repairing, please check the gradation (10step or the gray scale) test pattern or moving image.
Also, please check that it is normal on a self check screen.
5. 2. 3. Interlock detection
The lamp cover switch detects whether the lamp cover is mounted securely.
When the lamp cover is mounted securely, the interlock switch (SW1001) on the [A]-P.C.Board turns on.
5. 2. 4. Replacement of A-P.C. board
1. When the replacement of [A]-P.C.Board (assembly) is needed, back up the memory information such as adjustment data
from the old board to PC with the service software. Then transfer this data to the new [A]-P.C.Board.
 FormoreinformationrefertotheSECTION3"Adjustment".
* Down load the service software from Projector service web site.
2. When [A]-P.C.Board is replaced, the MAC address of wired LAN will be changed. Explain it to the customers in advance.
Interlock switch (SW1001)