Fostex 812 - SECTION 9 TROUBLE SHOOTING

SECTION 9 TROUBLE SHOOTING
Wion tbo unit dooc not oporato propory, oleaee check tie
fol'owing.
Feedback occurs when a given track of a multitrack
recorder is set to input monitor.
The output cr the given track may be comected to the
GROUP buss when is used lor the output ot this track, this
wil create an infinite ocp and may te the cause ot the
feedback.
No signal is heard at the INPUT FADER (15).
Yoj may have connected a monaural phore plug Vo Ihe
INSERT jack (37). "his will send the signal to the effector,
but will not return the signs back to the mi>sr.
Feedback occurs when increasing the signal level with
EFFECT SEND 1 (5), EFFECT SEND 2 (7) andfor AJX
GAIN (9).
Ycu may have connected the SENDS o' Hie EFFECT 1.
EFFECT 2 and/cr AUX with their respective INPUTS tosses
(44) and (45). creating a loop.
Cannot process an effect on the signal to AUX GAIN
(9), even though AUX is selected with the SEND 2
SELECTOR (6).
Ycu may haveseec’ed POST at the AUX SELECTOR (8). The
SEND 2 SELECTOR is effective only when the AUX SELEC¬
TOR is set to TARE and if his is not the case he SEND 2
SELECTOR is laced to be POST.
Cannot hear the monitor signal selected with the MONI¬
TOR SELECTOR (25).
Check if the SOLO LED (33) is lit: Ycu msy have pressed
a SOLO SWITCH somewhere Adjust the MONITOR LEVEL
knob (26) andtor PHONES VOLUME (27).
No sound is heard when a SOLO switch (13) and/or (20)
is pressed.
Adjust tie SOLO LEVEL knob (24).
The PEAK LED (1) lights frequently ovon aftor adjusting
with the TRIM (2).
Yoi may have raised the gain cf the EOUALI7FR (4) when
controlling Ihe tene auaity. causing an overload al the
ECXJALIZER stage.
Sound is heard at GROUP l/IASTER FADERS 7/L, 8/P (17)
even though no assigning is done to group busses 7
and 8.
You may have raisec the GROUP TO L-R GAIN (18). When
lot in usd set these knobs to <*>.