DeCrane Aerospace Audio International
LCDP-9151-201 Installation Manual
Document # 540355, IR, 11/2007
Page 12 of 16
International recommends using “Kleen & Dry” RR1205
manufactured by READ RIGHT, Nanuet, NY 10954.
Do not
use benzene, ammonia, thinner, or any other volatile
substance to clean the monitor or screen. These chemicals
may damage the screen or internal circuitry.
Do not
allow cleaner to puddle or pool around edges.
Seepage may damage internal circuitry.
4.2.2 DeCrane Aerospace Audio International’s recommended cleaning
method follows:
A.
Turn off monitor.
B.
Open pre-moistened pad and gently wipe evenly
across display glass. Do not allow solution to “pool” or
puddle around display edges.
C.
Immediately dry display using the absorbent, lint-free
cloth. Gently wipe display to a dry, clear finish.
5.0 Troubleshooting
5.1
General Troubleshooting Procedures
•
Verify power to the unit by rechecking +28 VDC power is applied to the
proper pins on the unit. Use a voltmeter to verify correct level.
•
Remove power from the unit for at least one (1) minute and reapply
power.
•
Recheck all connections to the unit for security. Check all harness runs for
possible pinching. Recheck all pinouts for application accuracy.
•
Check data bus integrity by utilizing a voltmeter, oscilloscope, or other
voltage instrument to verify proper input voltage on the data bus pins.
Typical measurements are as follows:
A to Ground: 4.0 to 4.5 VDC
B to Ground: 0.1 to 1.0 VDC
If any device is transmitting (i.e., holding bus active), then these typical
measurements would be reversed for the A-to-Ground and B-to-Ground.
This troubleshooting tool can help indicate a data bus lockup.
If this
occurs, remove the data bus from all other equipment one piece at a time.
As each is removed, check the bus status to see if it is now functioning
