F'real FRLB4, Service Manual

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19
Black Screens
Trigger: When the blender is turned on and boots up and either immediately or ultimately ends with a black screen.
Symptom 1 : The LCD screen remains completely black after boot - up.
Symptom 2 : "No Signal" or "Scanning Ports - DVI No Signal" box on the LCD screen, then goes black.
Symptom 3 : Boot up is normal, but after the screen "Blender will be ready when blue lights blinking on keypad, starting video," the
screen either has no videos or static screens, or just no videos.
Symptom 1 : The LCD screen remains completely black after boot - up.
1. Ensure the blender is plugged in and turned on.
2. Ensure the circuit breaker has not been tripped or has been turned off.
3. Open the front door and turn the blender off. Remove the power plug from the top of the screen. Locate a Multi - Meter and
check for 24VDC at the Front Door Power Cable after the blender is turned back on.
A. If there is no power, remove the two right side panels and inspect the Left Power Supply at the top of the Electronics Bay.
a. If the small green LED on the top of the Power Supply is not lit, inspect wiring. If there are no issues with wiring,
replace
Power Supply, 24DCV (Parts Manual: Control Boards, Upper).
B. If there is power, turn blender off and replace the Front Door Power Cable and turn back on. If the LCD screen remains
black, replace
Front Door with Screen Assembly (Parts Manual: LCD Panels).
Symptom 2 : "No Signal" or "Scanning Ports - DVI No Signal" box on the LCD screen, then goes black.
1. Turn blender off and unplug for a minimum of 3 minutes, power back on.
2. Check the DVI cable at the front door and at the Single Board Computer (SBC). Unplug/re - seat both ends of the cable.
3. Verify that power is getting to the SBC. Remove the right side panel and electronics bay cover.
A. If the fans are running and the issue is still present, replace the SBC (Parts Manual: Control Boards, Lower).
B. If the fans are not running, proceed with the following steps to "Jump - Start" the SBC:
a. Power down the blender (it’s not necessary to unplug).
b. Remove the connector in the upper right that has the yellow and blacks wire. It is labeled "SBC Reset."
c. Continued on the next page.
d. Using a Phillips screwdriver, bridge the top (2) left pins on the connection and turn the blender back on at the same
time.
i. If the fans start up and the blender boots up in a normal process, remove the screwdriver, re - connect the "SBC
Reset" connection and return the panels.
ii. If the fans start up and the blender does not boot up, replace Single Board Computer (Parts Manual: Control
Boards, Lower).
iii. If the fans will not start with the "Jump - Start" process, proceed to Step 4.
4. If the fans will not start, verify the left power supply is operational. The green light in the top right will be lit if power is present.
If no light, check the incoming voltage to the power supply. The input is located in the lower portion of the power supply. It will
have white and black wires. Locate a Multi
- Meter, the voltage will be 120VAC.
A. If no voltage is present, replace High Voltage Control Board (Parts Manual: Control Boards, Upper).
B. If voltage is present, replace Power Supply, 24DCV (Parts Manual: Control Boards, Upper).
Symptom 3 : Boot up is normal, but after the screen "Blender will be ready when blue lights blinking on keypad, starting video," the
screen either has no videos or static screens, or just no videos.
Choose from the two options below that closely fits the situation:
1. After boot - up there are static screens present, but no videos:
A. Call the f’real Customer Support Center to verify whether or not the blender is checking in with our servers.
B. If the blender is checking in with us and videos are still missing:
a. A f’real technical support representative will continue to troubleshoot with you over the phone.
b. If it is not checking in, replace either the Single Board Computer (Parts Manual: Control Boards, Lower) or replace
Solid State Drive (Parts Manual: Glossary). Discuss with Customer Support to verify the correct steps to be taken.
2. After boot - up, there are no static screens present and no videos.
A. Turn the blender off, wait 30 seconds and turn it back on, if the issue remains, proceed to Step B.
B. Call the f’real Customer Support Center to verify whether or not the blender is checking in with our servers.
C. If the blender is checking in with us and videos are still missing:
a. A f’real technical support representative will continue to troubleshoot with you over the phone.
b. If it is not checking in, replace either the Single Board Computer (Parts Manual: Control Boards, Lower) or replace
Solid State Drive (Parts Manual: Glossary). Discuss with Customer Support to verify the correct steps to be taken