ENSONIQ EPS-16 PLUS - Page 18

Troubleshooting Guide
TROUBLESHOOTING AN EPS-16 PLUS
WITH SOME LEDS LIT
>--NO
Test the power supply
unloaded.
Go to Incorrect
Power Supply Voltages
flow chart on p. 9.
YES
>- __ NO _ ........ Repaircable
JIll"" and retest.
YES
Place scope ground on the left
lead (negative) of C19 and probe
on pin 4 of J15-DISPLA Y.
page 14
YES
Replace the
KeypadlDisplay board
(see Section B).
>--NO
Replace the Main Board
(see
Section A).
Figure 8 -
Some LEDs Lit
EPS-16 PLUS Service ManZllll