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B l o c k D i a g r a m for E X 1 - Page 2 of
2
D
E
S
IG
N
E
D
A
N
D
M
A
N
U
F
A
C
T
U
R
E
D
B
Y
Y
O
R
K
V
IL
L
E
S
O
U
N
D
THERMISTOR
THERMISTOR
THERMISTOR
SENSE
HIGHEST
SHUT
DOW
N
THRESHOLD
AC POWER
SENSE
FA
N
DRIVER
&
REGULA
TOR
+41V
FA
N
NAND
LEFT MUTE FET
RIGHT MUTE FET
SUB MUTE FET
-19V
TO
UNMUTE
M1213 BOARD
M1214 BOARD
M1213 BOARD
M1214 BOARD
THERMISTORS
MONITOR
HEA
TSINKS
FAN RUNS FOR 2sec
WHEN POWER IS TURNED ON TO
INDICA
TE FUNCTIONAL ST
ATUS,
AND BEGINS FULL OPERA
TION
AT 45 DEG
C
