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Page Title:
AC HEATER CONTROL PANEL LIGHTS DO NOT OPERATE - continued |
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 DRAFT
TB 9-2320-364-13&P-1
AC HEATER CONTROL PANEL LIGHTS DO NOT OPERATE - Continued
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2.
WARNING
KNOWN INFO
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Read WARNING on
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Instrument panel light circuit OK.
TEST OPTIONS
POSSIBLE PROBLEMS
Visual inspection.
Does optic ribbon light
Cab harness wire 1052/optic ribbon light
REASON FOR QUESTION
source operate?
source power wire faulty.
Optic ribbon light source lamp faulty.
To isolate system fault.
Optic ribbon light source ground wire faulty.
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Optic ribbon connection loose.
Optic ribbon faulty.
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Go to Step 3 of this
NO
fault.
YES
Go to Step 5 of this fault.
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3.
WARNING
KNOWN INFO
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Read WARNING on
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Instrument panel light circuit OK.
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TEST OPTIONS
Optic ribbon connection OK.
Voltage test.
Optic ribbon OK.
Are 10 to 14 vdc measured on
POSSIBLE PROBLEMS
cab harness wire 1052/optic
REASON FOR QUESTION
ribbon light source power
Cab harness wire 1052/optic ribbon light
wire at optic ribbon light
source power wire faulty.
If 10 to 14 vdc are not
source lamp socket?
measured, cab harness
Optic ribbon light source lamp faulty.
wire 1052/optic ribbon
Optic ribbon light source ground wire faulty.
light source power wire is
faulty.
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Repair cab harness
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wire 1052/optic
ribbon light source
NO
power wire (see
Appendix A) or notify
Supervisor. Verify
YES
repair, go to Step 6 of
this fault.
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0016-4
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