This is the 17 pages manual for Akai AM U07 Schematic.
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5-2 FADE IN AND FADE OUT
FROM lct TCSIBOP
—:9— 8 102 I0 m '
2 9 2/4 I
an ”a .
l: E ——<
'I'Ei" J, MAINAMP
l. , .
MAIN AMP PCB
FABgR SW “0N"
FADER SW "OFF"
1) FADE IN
When an “H" level is output by [C] (TC9130P) pin
(D, [C2 ('l'C400lBP) pin (4) will attain an “L” level,
after which ICZ (TC400lBP) pin ® will attain an
“L“ level, and lastly, lC2 (TC4OOIBP) pin CD will
attain an “L” level. C11 and C21 will then slowly
discharge, drawing the TR14 and TRIS gates toward
—B, and RM and TRIS will slowly turn off.
2) FADE our
SERVICE MANUAL AM-U7
When an “L" level is output by [Cl (TC9130P) pin
(D, 1C2 (TC4OOIBP) pins @ and (I) will attain “H"
levels, slowly raising the TRM and TRIS gate volt-
ages, and ultimately 1C2 (TC4OOIBP) pin ® will
attain an “H" level, at which time, the TRl4 and
TR] 5 voltages will reach the levels set in advance.