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C2928M-A (4/07) 57
Troubleshooting
There are several methods that can be used to determine nature of a functional problem with the PMCD750 display.
ON-SCREEN CODES
The on-screen code is a sequence of of red and amber lights that can flash on the screen to indicate current status or if a fault exists. If Auto
Codes was selected in the miscellaneous menu during adjustment, the code will be automatically displayed whenever there is a fault that forces
the lamp off. Refer to the Input Level Adjustment, Automatic section for setup options.
To activate the on screen code manually, press MONITOR on the remote. There should be red or amber lights flashing. Refer to Table A for code
definitions. If the lamp is functioning, the Display Status menu will appear.
If the flashing lights are not visible, repeatedly press CURTAIN on the remote to make the screen background black.
If there is a steady amber light with no video, check the following:
• The Curtain (internal) image color. Press CURTAIN repeatedly on the remote to toggle the background display.
• The source (external) image color.The source image is be black.
• The absence of a source. This produces a black screen.
• Foreign object. A foreign object blocking the light path inside the display.
Table A. On-Screen Codes
INSIDE LEDS
The LEDs located on the electronics module will provide information on the current state of the unit.
The LEDs are readily visible from the rear of the display, located on the left side of the chassis with the input connectors. Refer to Figure 44. Refer
to Table B for LED code definitions.
Condition Priority Each block represents 0.2 seconds
Starts with red;
lamp is off
Door open 1 R R R
See footnote 1
Power supply fan failed 2 R Amber
DLP fan failed 3 R Amber R
350V failed 4 R R Amber
Optical engine failed 5 R R Amber R
Lamp failed 6 R R R R
Lamp off (wait, auto off)
2
7 R R Amber Amber
Wait (lamp off, cooling) 8 R R R R
Starts with
amber
Lamp off (lamp saver)
3
9 Amber Amber R
Lamp off (ready to turn on) 10 Amber Amber
Lamp striking (starting) 11
Amber Amber Amber
Lamp on, no alarms 12 Amber on continuously
R = Red To show the code, press
MONITOR button once.
1
With Priority 1-6, to turn lamp on, cycle off, and then on. If Auto Codes in the Miscellaneous menu is checked, events with Priority 1-5 start the
on-screen code automatically.
2
Lamp Saver turned lamp off; lamp is cooling and will turn on at end of cooling period.
3
A Lamp On command from the remote or from RS-232 commands will turn lamp on.