ViewSonic PJL7211 PJL7211 User Guide (English) - Page 62

Phenomena that may be easy to be mistaken for machine defects About the phenomenon confused with a machine defect, check and cope with it according to the following table. Phenomenon Power does not come on. No pictures are displayed. Cases not involving a machine defect The electrical power cord is not plugged in. Correctly connect the power cord. The main power source has been interrupted during operation such as by a power outage (blackout), etc. Please disconnect the power plug from the power outlet, and allow the projector to cool down at least 10 minutes, then turn the power on again. Either there is no lamp and/or lamp cover, or either of these has not been properly fixed. Please turn the power off and disconnect the power plug from the power outlet, and allow the projector to cool down at least 45 minutes. After the projector has sufficiently cooled down, please make confirmation of the attachment state of the lamp and lamp cover, and then turn the power on again. The signal cables are not correctly connected. Correctly connect the connection cables. Signal source does not correctly work. Correctly set up the signal source device by referring to the manual of the source device. The input changeover settings are mismatched. Select the input signal, and correct the settings. The brightness is adjusted to an extremely low level. Adjust BRIGHTNESS to a higher level using the menu function. The computer cannot detect the projector as a plug and play monitor. Make sure that the computer can detect a plug and play monitor using another plug and play monitor. The BLANK screen is displayed. Press the BLANK button on the remote control. Reference page 11 11, 14 49, 50 9 - 15 25 10 20 (Continued on next page) ViewSonic 57 PJL7211