Speaker Faults; Lcd Display Faults - Epson MR Series Technical Reference Manual

Speaker Faults

Sound does not sound
Adjust the sound in OS. First, confirm the setting of OS.
❏ Follow the procedures below.
1. In case of the Speaker model, exchange the speaker.
2. Confirm whether replacing the main circuit board solves the problem.

LCD Display Faults

LCD Display Screen Either Blank or Unstable
❏ Follow the procedures below.
1. Check the connection of the video connector.
2. Check the display setting of the display. (Refer to Chapter 7.)
3. Replace the display and cable (Reference No. 119).
4. Confirm whether replacing the LCD circuit board solves the problem.
5. Confirm whether replacing the LCD solves the problem.
6. Confirm whether replacing the AC adapter solves the problem.
7. Check the power supply. (Refer to page 8-23.)
8. Confirm whether replacing the main circuit board solves the problem.
Backlight of LCD Does Not Function
❏ Follow the procedures below.
1. Check the connection of the inverter board.
2. Confirm whether replacing the inverter board solves the problem.
3. Confirm whether replacing the LCD circuit board solves the problem.
4. Confirm whether replacing the LCD solves the problem.
Rev. I
MR Series Technical Reference Manual
Troubleshooting 8-11