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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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4.
WARNING
KNOWN INFO
TEST OPTIONS
Read WARNING on
Instrument panel light circuit OK.
Continuity test.
Optic ribbon connection OK.
Optic ribbon OK.
REASON FOR QUESTION
Cab harness wire 1052/optic ribbon light
Is continuity measured
If continuity is measured,
source power wire OK.
across optic ribbon light
optic ribbon light source
POSSIBLE PROBLEMS
lamp is faulty. If not, optic
source ground wire from
ribbon light source ground
optic ribbon light source lamp
Optic ribbon light source lamp faulty.
wire is faulty.
socket to a known good
Optic ribbon light source ground wire faulty.
ground?
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Repair optic ribbon light
source ground wire
NO
(see Appendix A) or
replace optic ribbon
light source wire
harness (WP 0043).
YES
Verify repair, go to
Step 6 of this fault.
Replace optic ribbon light
source lamp (WP 0043).
Verify repair, go to Step 6 of
this fault.
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WARNING
5.
KNOWN INFO
TEST OPTIONS
Read WARNING on
Instrument panel light circuit OK.
Visual inspection.
Cab harness wire 1052/optic ribbon light
REASON FOR QUESTION
source power wire OK.
If optic ribbon is not securely
Optic ribbon light source lamp OK.
connected or faulty, AC
Is optic ribbon securely
Optic ribbon light source ground wire OK.
heater control panel lights
connected to optic ribbon
will not illuminate.
POSSIBLE PROBLEMS
light source?
Optic ribbon connection loose.
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Optic ribbon faulty.
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Reconnect optic ribbon
(WP 0041). Verify
NO
repair, go to Step 6 of
this fault.
YES
Replace optic ribbon
(WP 0041). Verify repair, go
to Step 6 of this fault.
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0016-6
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