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ZP94/95X CHASSIS L.E.D. (VISUAL TROUBLE DETECTION) DIODES
SUB POW ER SUPPLY PW B 4 GREEN L.E.D.s and 1 RED L.E.D.
Start U p
R905
R906
Osc B +
D 903 is a RED L.E.D .
Off = N o I901 B+
B linking = Shutdown
R907
D 903
R
CIRCUIT DESCRIPTION
Stby
Audio
+11V
Ft. 29V
R933
D912
D949
G
G
ALL GREEN L.E.D.s
24.2V
4
I901 D river/
Output IC
100% D ead T ime &
IC B+ D etection
Q 901
Shutdown
SCR
Sw
Stby +7V
+5V
R930
R936
D931
D927
G
G
Run
24.2V
I903
R908
4
3
1.9V
I903 Shutdown
Photocoupler
16 Shut D own
Inputs
V cc
1
2
Q905
Shutdown
SCR
31
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