TM 1-1520-238-10
2-81
Table 2-4.
Pilot Caution/Warning Light Segments - continued
Word Segment
Color
Illumination Parameter or Fault
PRI HYD PSI
AMBER
Primary system hydraulic oil pressure is below 1250 psi.
OIL LOW PRI HYD
AMBER
Primary system hydraulic fluid is at minimum operating level.
OIL BYP PRI HYD
AMBER
A pressure differential of 60 to 80 psi has been detected in either the
pressure or return filter of the primary hydraulic system. The return filter
will bypass; the pressure filter will not.
OIL PSI MAIN XMSN 1
AMBER
Main transmission No. 1 system pressure is below 26 – 30 psi.
OIL HOT MAIN XMSN 1
AMBER
Main transmission No. 1 oil system temperature is above 274 – 294 F
(135 – 145 C).
GEN 1
AMBER
No. 1 generator is not on line.
RECT 1
AMBER
Transformer-rectifier has failed, or there is no ac input to the rectifier.
HOT RECT 1
AMBER
Temperature 190 F (87 C) at transformer-rectifier is excessive. Rectifier
fan has probably failed.
SHAFT DRIVEN COMP
AMBER
Shaft driven compressor oil temperature is above 340 – 360 F
(171 – 182 C); or shaft driven compressor pressurized air output is less
than 5 – 9 psi. No 1 engine bleed air will automatically supply the
pressurized air system if No. 1 engine is operating.
PRI MUX
AMBER
The selected multiplex bus controller has malfunctioned and the other bus
controller has assumed control of the multiplex bus. Light will extinguish
when the operating bus controller is selected with the MUX switch on the
CPG fire control panel.
UTIL HYD PSI
AMBER
Utility system hydraulic oil pressure is below 1250 psi.
OIL LOW UTIL HYD
AMBER
Utility hydraulic fluid is at minimum operating level.
OIL BYP UTIL HYD
AMBER
A pressure differential of 60 to 80 psid has been detected in either the
pressure or return filter of the utility hydraulic system. The return filter will
bypass; the pressure filter will not.
OIL PSI MAIN XMSN 2
AMBER
Main transmission No. 2 oil system pressure is below 26 – 30psi.
OIL HOT MAIN XMSN 2
AMBER
Main transmission No. 2 oil system temperature is above 274 – 294 F
(135 – 145 C).
GEN 2
AMBER
No. 2 generator is not on line.
RECT 2
AMBER
Transformer-rectifier has failed, or there is no ac input to the rectifier.
HOT RECT 2
AMBER
Temperature 190 F (87 C) at transformer-rectifier is excessive. Rectifier
fan has probably failed.
CANOPY
AMBER
Canopy doors are not properly closed.
