Welch Allyn AudioScope - Section 3: Troubleshooting; 3.1 Troubleshooting AudioScope 3 (ASIC)

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3.1 Troubleshooting AudioScope 3
s/n <=969999 (ASIC)
Complaint Cause Corrective Action
Unit does not turn on.
Green LED does not light.
Low battery voltage. Substitute with charged test
battery and retest.
Replace battery. Retry.
If green LED remains unlit,
replace board.
Cold solder joint at battery
terminal.
Restore connection by
reflowing joint (using T19102-
2).
Defective contact in power jack
will not close when charge plug
is removed.
Replace power jack.
Low battery voltage Defective power jack Replace housing.
Defective charging circuit Inspect circuit. Restore.
Speaker does not produce
tones.
Cold solder joint at speaker or
wire to PCB.
Restore connection by
reflowing joint (using T19102-
2).
Broken speaker wire Repair wire.
Defective speaker Replace speaker.
No voltage at TP2 Replace Board
4-K range does not calibrate. Defective speaker Replace Speaker. If still does
not cal, replace PCB and retest.
Housing fails air seal test. Gasket not seated correctly Remove lens assembly and
rotate 180 degrees. Reinstall
and retest.
Leaking Lens Gasket Replace housing.
Leaking Stabilizing Grommet Replace
Defective housing Replace housing.
Halogen lamp does not light. Low battery voltage. Recharge or replace battery.
Defective halogen lamp. Replace.
Handle does not charge. Bent or broken charging
contacts in charging well.
Re-shape contact(s)
Replace Housing Assembly
Excessive battery drain. Shorted lamp. Replace Lamp.