33
CIRCUIT DESCRIPTION
I901
Power
IC
4
R906
R905
D902
D904
C907
R908
D905
C908
8
9
T901
AC
R909
Q901
C910
R910
1
2
3
I903
4
28V
R945
R911
Q905
C947
R955
Sw +12V
Sw +5V
Stby +7V
D936
D935
D933
D932
D938
Stby +11V
D941
D921
Q909
C949
R959
Q908
R958
+28V
R957
D945
Q903
On/Off
On
Off
On
Off
D946
R960
D944
Sw +12V
D943
Sw +5V
D957
D958
Protect 1
PQS2
R198
Pin 10
D015
Sw +9V
D014
Sw +5V
D016
Sw +3.3V
Sw +2.5V
Q912
C956
R969
D951
R960
D952
Stby +11V
D955
Stby +7V
D959
D960
Protect 2
PQS2
R014
Pin 11
D032
Stby +5V
D007
Stby +9V
Stby +3.3V
D954
D953
R968
R967
D956
11
12
ZP94/95 STBY POWER SUPPLY (Low Voltage) SHUT-DOWN CIRCUIT
Vin
R960
D944