5-4
Valco Cincinnati, Inc.
Section 5 – Setup
MM125 - D-90 Hot Melt Unit
Display
Adjustment
The display contrast is adjusted for optimal viewing at the factory. If the
display is not visible when the Temperature Controller powers up, the
contrast may need to be adjusted.
Follow the procedure below to adjust the contrast:
1.
While holding down the ‘SETUP’ key on the front panel keyboard,
simultaneously press the “+” and “-” keys to change the contrast
on the display. This will make the characters on the display
brighter and dimmer, and is considered the fine adjustment.
2.
If this does not work, or is not enough to see the display, open
the electrical enclosure door to view the rear of the CPU board.
3.
Adjust the Display Contrast Adjustment Pot on the rear of the
CPU board using a small screwdriver. (this requires a very small
slotted screwdriver)
4.
This is the course adjustment and small incremental turns of this
pot will make drastic changes in the brightness of the display.
Contrast Adjustment – Coarse Adjustment
Contrast Adjustment
Pot, Coarse Tune
Содержание D-90
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Страница 146: ...C 2 ValcoMelton Appendix C Schematics MM125 D 90 Hot Melt Unit 240V 3Ø 029XX435 ...
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