Madrigal Imaging MP-8, MP-9 manual Symptom Projector does not respond to the Stby or Mute keys

MAINTENANCE

Symptom:	The projector does not respond to the STBY or MUTE keys.
Cause/Remedy:	1) You may not be holding down the key long enough to initiate the
	action. Like POWER , STBY and MUTE must be pressed down for at least
	one second.

Symptom: The projector does not respond to an IR Remote keypad.

Cause/Remedy: 1) The projector's IR keypad listening status may be turned off. Press PROJ to turn on the listening status of all projectors, or press PROJ followed by the projector's identity number to turn on the listening status of the projector you want to respond.

2)The keypad's protocol (A or B) might not match the projector's IR pro- tocol setting. Refer to section 2.3, Hardware Setup for instructions on how to check and change the keypad's protocol setting. However, if the projector's setting is "Off", the remote keypad will not respond. You may have to configure the keypad for built-in operation to gain control of the projector.

3)The IR keypad may be too far away from the projector or screen. Use the IR keypad closer to the projector or screen. Also ensure the keypad is pointed directly at the screen or the front of the projector.

4)The viewing path between the IR keypad and the projector (or screen or switcher) may be restricted. Ensure there is a clear line-of-sight between the keypad and the projector (or screen or switcher).

5) The sensor may be disabled per the Keypad Options menu ( UTIL 6 1 ).

6)The batteries in the IR keypad may be weak. Replace the batteries in the keypad. See section 2.3 for battery installation instructions.

7)There may be unusual lighting conditions in the room which effect IR keypad operation. Determine if such conditions exist and correct.

Symptom: The display is jittery or unstable.

Cause/Remedy: 1) The horizontal or vertical scan frequency of the input signal may be out of range. Check the specifications in Section 5 for scan frequency ranges.

2)Synchronization signals from the source may be inadequate. Correct the source problem.

3)The input signal type may not match the signal type required by the input module. Install the correct input module/interface to match the signal type of the source.

4.5