P N O s c a n
P N O s c a n
P N O s c a n
I I
I I
I I
I n s t a l l a t i o n M a n u a l
I n s t a l l a t i o n M a n u a l
I n s t a l l a t i o n M a n u a l
Manual Rev. 1.18
13
QRS Music Technologies, Inc. / Technical Support - 800-247-6557 / www.qrsmusic.com
With the function test complete, the key sensor strip now properly scaled to the key spacing and locked
in place with tape, you are ready to continue the installation.
17. Unplug the AC Power Adapter from the wall outlet.
18. Disconnect the Key Scan Assembly by unplugging the cable from the Key Scan connector on the Soft
Pedal Circuit Board.
19. Now remove any PNOscan items from the keyboard and set them aside while the keys are removed.
Be careful with the Key Scan Assembly to avoid knocking the boards out of alignment.
Always set the assembly in a safe place and lay it on a flat surface, do not set on end!
20. Use a straight edge and align it with the two marks you made on key 1 and key 88. Use a pencil and
strike a light line across all 88 keys.
Starting with Key Scan Board #1, at the bass end of the keyboard, visually align the individual Optical
Sensors with each key, keeping the “Status” LED aligned with the gap between keys 11 and 12.
Figure 13
.
8. Adjust
Board #1
to align the Optical Sensors while keeping the “Status” LED between
keys 11 & 12
.
9. Place a piece of Silver Tape over the track and board to secure it’s position.
Do not place the tape over any exposed “silver” trace or component on the board.
10. Repeat steps 8 & 9 for Key Scan boards 2, 3 & 4, aligning the “Status” LEDs as follows:
11. Adjust
Board #2
to align the Optical Sensors while keeping the “Status” LED between
keys 33 & 34
.
12. Adjust
Board #3
to align the Optical Sensors while keeping the “Status” LED between
keys 55 & 56
.
13. Adjust
Board #4
to align the Optical Sensors while keeping the “Status” LED between
keys 77 & 78
.
14. Use a fine tipped marker to place a mark on each of the metal tracks where the green LED is located.
Once installed, the LEDs can be seen when looking down through the spaces between the keys.
E]...Establishing the Bass/Treble Position of the Key Scan Circuit Boards - Function Test
Masking Tape
Silver Tape
Slide the boards within the track and
align the sensors to the keys
keeping the “Status” LED
between selected keys.
Mark the track at each “Status” LED
Figure 13
15. Place a small piece of masking tape over the “Status” LED on Key Scan Board #2.
Press on the tape so that the outline of the LED is clearly visible.
16. Using a pencil, draw a line on the tape that is centered in the space between
keys 33 & 34.
Figure 14.
We will use this mark later to align the bass to treble position of the Key Scan
Assembly under the keys.
Figure 14
