HP 9050 CE Handbook page 59

STACK P.S.
TEMPERATURE
FAN
CONTROL
+19V
..
~
-12 VOLTS
MAIN P.S. OVERTEMPERATURE
STACK TEMPERATURE
+6.7V OVER/UNDER VOLTAGE
{
~
OVER/UNDER VOLTAGE
..
VARIABLE FAN VOLTAGE
+6.7 VOLT
POWER
SUPPLY
+3.85 VOLT
POWER
SUPPLY
+19 VOLT
OVER/UNDER
VOLTAGE
-2 VOLT
POWER
SUPPLY
OVER
TEMPERATURE
CIRCUIT
STACK P.S .
LED
DRIVER
+6.7V TO STACK
+6.7V OVER/UNDER VOLTAGE
+3.85V TO STACK
+3.85V OVER/UNDER VOLTAGE
+19V OVER/UNDER VOLTAGE
~
OVER/UNDER VOLTAGE
-~ TO STACK
OVER TEMPERATURE
OVER TEMPERATURE LED
(-P
r-------------~~
STACK P.S. LED
IB VOLTAGE
-""
r
REMOTE
TURN OFF
CIRCUIT
~
18 LED
DRIVE
~
REMOTE TURN OFF
TO MAIN P.S.
~
IB LED