Sharp PN-L803C Service Manual page 65

1-2. MAIN PWB REPLACEMENT PROCEDURES
1) Read the following information from the monitor before replacement of Main PWB.
- USAGE TIME
- SERIAL NUMBER
- WHITE BALANCE VALUE
- GAMMA SETTING VALUE
(MEMO)
- If the machine does not operate before replacement and reading cannot be made, this procedure is not required.
2) Replace Main PWB and execute FACTORY RESET.
→Refer to "4. FACTORY RESET"
3) Set the MODEL TYPE depending on the destination.
Turn OFF and ON the main Power. The default destination of service parts is "JP."
→Refer to "1-2. SERVICE MENU 2"
4) Set the MODEL NAME depending on the destination.
→Refer to "6-2.MODEL NAME SETTING FUNCTION"
→Refer to "10. MODEL NAME SETTING PROCEDURES"
5) Each service part has the firmware written in it. If necessary, the firmware should be updated to the latest.
→Refer to "2. MAIN FIRMWARE UPDATE PROCEDURE"
6) Each service part has the EDID written in it. If necessary, the EDID should be updated to the latest.
→Refer to "6-1. EDID FUNCTION"
7) Write the information read in the above step 1).
(MEMO)
When the reading cannot be executed, conduct the following operation.
- Set "0" to USAGE TIME and perform initialization.
- Reset the WHITE BALANCE set values.
- Reset the GAMMA set value.
- Restore the setter settings backed up in procedure 1) as needed.
8) Write the serial number.
→Refer to "6-3. SERIAL NUMBER SETTING FUNCTION"
→Refer to "8. SERIAL NUMBER WRITING PROCEDURES"
9) Reset system log and temp log information.
→Refer to "6-5. SYSTEM LOG AND TEMPERATURE LOG INITIALIZATION"
→Refer to "12-8. OTHER FUNCTIONS".
10) Make the test pattern displayed, and check to confirm that all the patterns are displayed.
→Refer to "18. TEST PATTERN TOOL"
PN-L803C/80TC3 IMPORTANT INFORMATION FOR SERVICING THE DISPLAY 3-2