HOSE AS 8W6812 - Caterpillar

Display is Blank
After the display performs the self-test successfully, perform the following steps if the display is blank.
Ensure that the system is NOT in "Standby". Confirm that the LED that is above and to the right of the "Standby" button (button 3), is off. In order to check if the system is in "Standby", refer to the appropriate "Display Button Operation" table in the "Configuration" section of this document. Note: In a multi camera system, the system should be placed in manual mode. Select each camera view in order to ensure that all camera views are being displayed. If the display is still blank, refer to step 2.
Ensure that the brightness level is set correctly. In order to check the brightness level, refer to the appropriate "Display Button Operation" table in the "Configuration" section of this document. If the brightness level is set correctly, refer to step 3.
If any or all cameras views still fail to be seen on the display, then disconnect all camera video cables from the switcher.
Remove the display cable from the switcher.
One-by-one, connect each camera video cable directly to the display cable connector.
Check the display after each camera is connected to the display cable in order to verify if that particular camera is operating correctly.
If each camera is operating correctly after performing the preceding step, then replace the switcher.
Illustration 3 g01183741
Example of Front Camera View on Truck
No View From Rearward Looking Camera
In most all single and multi camera applications the system is configured to show the view from the rearward looking camera when the machine is placed in reverse gear. On a single camera system, camera one is the rear camera. On a multi camera system, camera two is the rear camera. Respectively, the C1 indicator should be illuminated when the machine is placed in reverse gear for a single camera system and C2 should be illuminated on a multi camera system.
Illustration 4 g01183523
Example of Rear Camera View of Truck Near Earthen Berm
Before the following steps are done, ensure that the multi camera system is in automatic mode. The single camera system default mode is automatic.
Make sure that the air start supply is locked out.
Ensure that the key switch is turned to the ON position. DO NOT turn the key switch to the "START" position.
Place the machine in reverse gear. The rearward image should appear on the display.
If the image is not shown on the display, check the voltage on the following pins based on a single camera or multi camera configuration: Single camera - check pin 3 (back up alarm circuit) to pin 2 (ground) on the Deutsch connector.Multi camera - check pin 4 (back up alarm circuit) to pin 2 (ground) on the Deutsch connector. The voltage should be equal to the machine system voltage.Note: The voltage must be 11vdc or greater in order to activate the WAVS.If there is insufficiant voltage, the machine backup alarm supply voltage must be verified. The voltage can also be verified from the ECM output which serves as