Service manual

ReDlack! ASR-1 O/88 Modules
16. Connect Jl 24-pin ribbon cable and J2 7-pin power cable to the keypad/display board.
Make sure to do this before installing the keypad/display board because the connectors
are difficult to reach once the board is installed.
17. Place the keypad/display board into the unit. Make sure that the buttons are through the
holes in the front panel. Make sure that the slider bucket legs (for the volume and data
entry pots) are through the holes in the keypad/display board.
18. Starting with the non-slotted holes closest to the keyboard, install the ten (10) #8 screws
that hold the keypad/display board to the front panel.
19. Install the center right, center left, and center stringer support brackets (see Figure 17)
USING NO MORE THAN 8 INCH POUNDS!
a) Two (2) 6-32 SEMs into center stringer to left and right center brackets,
b) One (1) 8-32 SEM into right center bracket to rear extrusion, and
c) One (1) 8-32 SEM into left center bracket to rear extrusion.
20. Install the analog jack board (see Section G).
2 1. Install the analog board (see Section B).
22. Install the digital jack board (see Section F).
/
23. Install the digital board (see Section A).
SECTION
E
Replacing the Keyboard (ASR-10)
Removing
Installing
1. Remove all cables connected to the ASR-10, including the power cord.
2. Turn the unit upside-down and remove all the screws from the base and rear panel.
3. Remove the digital board (see Section A).
4. Disconnect the 20-pin ribbon cable from the keyboard.
5. Remove the thirteen (13) screws that hold the keyboard to the keyboard bracket (see
Figure 18):
a) Six (6) M3.5x19 in the front part (key tips side) of the keyboard bracket, and
b) Seven (7) M3.5x7.5 screws from the back (spring side) of the keyboard bracket. Note
that one screw holds the wheels/patch select wires to the keyboard bracket.
6. Turn the unit rightsideup with the keyboard closest to you.
7. Lift the front of the white keys until they rest on the front extrusion.
8. Slide the keyboard toward you.
9. Slide the keyboard (springs first) into the unit. Gently push the white keys down behind
the front extrusion.
10. Carefully turn the unit upside-down, jack side closest to you.
11. Starting at the right comer away from you, install the six (6) M3.5x19 screws.
12. Install the seven (7) M3.5x7.5 screws into the other row of holes. Be sure to put the
patch select cable tie in with the far left screw.
13. Connect the 20-pin ribbon cable to the keyboard.
14. Install the digital board (see Section A).
15. Replace the base pan.
16. Test the unit.
ASR Service Manual 4.5