BATTERY CHARGER
Page L-4
Repair and Service Manual
Read all of Section B and this section before attempting any procedure. Pay particular attention to all Notes, Cautions and Warnings
Fig. 6 Troubleshooting Sequence
Relay
Clicks
Plug AC Cord
into Known
Good Socket
Finish
Check Vehicle
Batteries
Ammeter
Deflects?
AC Cord
Continuity Check
With Charger
CLOSED
Plug in DC cord to
Vehicle
Unplug
DC Cord
Open Charger
Replace
Cord Set
Go to START
Replace
PC Board(s)
Go to START
Replace
Transformer
Go to START
Unplug
AC & DC Cord
Check Wiring
Continuity of DC
Cord
Repair
Replace
Component
Finish
Go to START
Yes
Yes
Unplug
AC Cord
Open Charger
Unplug
DC Cord
Open Charger
Good
Good
Bad
Bad
Yes
No
No
Transformer
Hums?
Yes
No
Bypass Relay
See Note
START
Transformer
Hums
Transform
Does Not
Hum
! WARNING !
Replace
PC Board(s)
Go to START
Inspect Capacitor
Odor or Visual
Damage
Finish
Fuse
Continuity Check
Replace
Diode(s)
Go to START
Replace
Fuse
Go to START
Repair or
Replace
Go to START
Replace
Transformer
Replace
Capacitor
Go to START
Diode Check
See Diode Test
Procedure
Good
Good
Good
Good
Bad
Bad
Bad
Bad
Check
Ammeter
Connections/
Function
ethal voltages are present when charger is
lugged in and the cover removed.
f you have any doubts regarding your ability to
afely perform the following test be sure to have
he charger repaired by a trained electrician or
echnician.
se extreme care not to permit the uninsulated
ortion of test leads to contact any other
omponent or the chassis of the charger.
NOTE
ypass the relay by attaching a test lead to both
ires at the printed circuit board mounted relay.
his will permit the transformer to function
ndependently of the relay.
lugging the charger into an AC receptacle may
esult in the transformer humming which indicates
hat the primary winding is functioning, but the
rinted circuit board has failed. If the transformer
oes not hum the transformer has failed.
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