Section 4: Troubleshooting
25238801 4-25
The bill changer doesn't respond to the test switches because one of the TEST switch
inputstothecomputeris,orwas,showinganincorrectsignal.
PresstheFUNCTIONbutton.Doesthemessagereappear?
Check for an intermittent short to Ground
ontheR/W,V/W,andBR/Wwires from P4
andP5tothepowercontrolcenter.Check
the wiring inside the power control center
from P204 to the power supply circuit
board.
NO
Possible defective power supply board or
CCC.
IFOK
Check for a short on R/W, V/W, and BR/W
wiresfromtheCCCtoGround.
YES
YES
Remove the Y/W wire from P5 and the R/W,
BR/W wires from P4 to the CCC.Push the
FUNCTION button.Does the code
reappear?
YES
ReplacetheCCC.
NO
Replacethepower
supplyboard.
Chart 010 — No Test Switch Response
Display shows: CK LEFT TEST SW – OR – CK CTR TEST SW
– OR – CK RIGHT TEST SW – OR – CK TEST SWITCHES
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