LAVAZZA blue LB 1200 USA CLASSY PRO 120V, Руководство по обслуживанию

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Technical support maintenance manual
Rel. 0.00 / February 2020
18
Each button is associated with a small square that cor-
responds to its position on the display.
By pressing a button, the corresponding LED turns off
and a green dot fills the corresponding square.
KEYS 2/14
• Screen 3/14
Test the ignition operation of each single LED.
Starting from the button ESPRESSO , ignite au-
tomatically, one after the other and in anti-clockwise
sense, all the LEDs of the unit to confirm the correct
operation.
• Screen 4/14
Test the ignition operation of all the LEDs.
The unit simultaneously turns on all LEDs of the unit to
confirm the correct operation.
• Screen 5/14
Test the activation of the dispensing compartment LED.
CUP LED 5/14
On/Off
The unit powers on and off alternately the LED of the
dispensing tray to test its correct functioning.
• Screens from 6 to 10/14
The screens from 6 to 10 are screenshots of different
colours (red, green, blue, black and white), which allow
the verification of the defective pixels.
Note
Use the scroll arrows ▲ ▼ to pass from one screen
-
shot to another.
• Screen 11/14
Screen 11 shows the configuration of the display.
CONFIG 11/14
R1: Not assembled
R2: Not assembled
R3: Assembled
The configuration is made up of three resistors R1, R2
and R3.
• Screen 12/14
Picture 12 shows the two power planes on the display.
VOLTAGES 12/14
+3V: xxx
+5V: xxx
- “ + 3V ” is the supply to the Micro Controller Unit.
- “ + 5V ” is the electric power supply for the LEDs.
• Screen 13/14
Back-lighting test.
BACKLIGHT 13/14
On
The unit activates and deactivates the backlight of the
display to confirm the correct operation.