ELECTRICAL SYSTEMS TROUBLESHOOTING (CONT)
(Sheet 1 of 3)
PROBLEM NO. 12
ALL DO NOT WORK
POWER switch ON. PANEL TEST switch ON.
Service lights (HEAD, FLOOD, etc. ) work (see NOTE A).
NOTE A: If the service lights do not work, see PROBLEM 6, page 2-90.
TROUBLESHOOT PANEL TEST CIRCUIT
This circuit provides a means of testing the indicator lamps, service meter, and operator audible warning horn before the engine is started. Diodes are
used to isolate the individual circuits from each other, yet allow one switch to test all circuits simultaneously.
PANEL TEST CIRCUIT
Go on to Sheet 2