PN-T321/T322B
IMPORTANT INFORMATION FOR SERVICING THE DISPLAY
4 – 1
CHAPTER 4. IMPORTANT INFORMATION FOR SERVICING THE DISPLAY
1. I/F PWB, LCD MODULE, PARTS REPLACEMENT PROCEDURES
The following information as well as user setting information are saved to the EEPROM (IC1007) controlled by main firmware and the EEPROM
(IC401) controlled by sub firmware.
INFORMATION STORED IN THE EEPROM’S (IC1007) CONTROLLED BY THE MAIN FIRMWARE.
n
SERIAL NUMBER
n
USAGE TIME
n
TEMPERATURE MONITOR SETTING INFORMATION
Therefore, when the I/F PWB, the LCD module, IC1007 is replaced, initialization and setting must be performed according to necessity.
In addition, after completion of the work, perform “ALL RESET”.
1 - 1. INFORMATION ITEMS
1 - 2. I/F PWB REPLACEMENT PROCEDURES
1 ) Read the following information from the monitor before replacement of the I/F PWB.
n
USAGE TIME
MEMO
n
If the machine does not operate before replacement and reading cannot be made, this procedure is not required.
2 ) Replace the I/F PWB and execute FACTORY RESET.
3
Refer to page 5 - 2 "3. FACTORY RESET".
3 ) Each service part has the EDID written in it. If necessary, the EDID should be updated to the latest.
3
Refer to page 6 - 2 "2. EDID WRITING PROCEDURES".
4 ) Each service part has the firmware written in it. If necessary, the firmware should be updated to the latest.
3
Refer to page 6 - 1 "1. MAIN FIRMWARE UPDATE PROCEDURE".
5 ) Write the information read in the above step 1).
MEMO
n
When the reading cannot be executed, conduct the following operation.
--- Set “0” to USAGE TIME and perform initialization.
6 ) Write the serial number.
3
Refer to page 5 - 4 "7. SERIAL NUMBER WRITING PROCEDURES".
7 ) Reset the temperature watch setting information.
3
Refer to page 5 - 6 "9. TEMPERATURE MONITOR SETTING PROCEDURES".
SERIAL NUMBER
The machine has its own serial number which is described on the nameplate at the back of the machine.
3
Refer to page 5 - 4 "7. SERIAL NUMBER WRITING PROCEDURES".
USAGE TIME
This information is linked with the LCD module. When replacing the I/F PWB, read the information before replacement,
and write it to the new I/F PWB after replacement.
3
Refer to page 5 - 5 "8. USAGE TIME SETTING PROCEDURE".
TEMPERATURE
MONITOR SETTING
INFORMATION
This is the setting information related to temperature watch.
Execute resetting when replacing the I/F PWB or the LCD module.
3
Refer to page 5 - 6 "9. TEMPERATURE MONITOR SETTING PROCEDURES".
