Sequential PROPHET-600 - 1-5 AUDIO OUTPUT; 1-7 CASSETTE

8. Connect a voltage pedal or other 0-10 Vdc source to the FILTER CV IN.
9. Connect MIDI cable to MIDI OUT. (This will later be temporarily-connected to MIDI
IN.)
10. Check that the PITCH wheel (the left wheel) is in center-detent position. (For
mechanical procedures for the wheels, see the end of this section.)
11. Check that the MOD wheel (the right wheel) is fully down.
12. Center MASTER TUNE.
13. Adjust SPEED to -ltt (to the left of 0), for XI playback.
14. Adjust VOLUME to 0.
15. Plug in Prophet-600 power cable.
16. Switch Prophet-600 power on.
17. If the Prophet-600 computer is operating normally first TUNE will light then after
a few seconds PROGRAM 00 will be displayed and PRESET will be lit.
18. If no LEDs light, check or replace fuse and try again.
19. If it does not "come-up" correctly, there must be either a computer or power
supply malfunction which may prevent further testing.
20. If used, switch on audio monitor system.
1-1 BASIC OPERATION TEST
1. Play a few notes and raise VOLUME to a usable level. (When using amplification
instead of headphones, for best signal-to-noise ratio, VOLUME should be set as high as
possible while the monitor system gain is reduced.) Check for smooth, quiet control
throughout VOLUME range. Check that when VOLUME is fully counterclockwise
(CCW), there is no output (bleed-through). With VOLUME as high as ''2", there may be
no output. This is normal.
2. If the control panel indicates normally but no sound can be heard (directly from
AUDIO OUT with headphones) then look into the FINAL VCA and AUDIO OUT
circuitry.
3.. If any of the following control switch (as distinguished from synthesizer switch)
operations are erratic, check the connection between the membrane switch panel and
PCB 1 for firm mating.
4. To test the cassette interface, save the (owner's) current programs and sequences on
tape. (Of course this will be be impossible if the cassette interface is disabled by a
computer malfunction.) To save programs and sequences:
a. Rewind tape to start for program file.
b. Reset tape counter (if used).
TM600A 7/83
1-3