Philips Avalon CTS M2720A, Service Manual

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7
Troubleshooting
A guide for recognizing system error messages and for troubleshooting problems you may encounter while
using the system is given in the
Instructions for Use . This chapter provides a guide for qualified service
personnel for troubleshooting problems that cannot be resolved by the user.
CAUTION
If the troubleshooting procedure requires you to disassemble the base station, be certain to follow the
disassembly and reassembly procedures given in Chapter 4. Whenever parts are replaced in the system, be
certain to verify the hardware and software compatibility of the repaired system.
System is Completely Inoperative
If the base station Power-On Light does not light when the base station is in stand-by or when switched on:
• Reset the system (see “System Reset” below).
• Check that the power cord is firmly connected to the base station.
• Check the condition of the power cable, and replace it if damaged, or if there are any defective connections.
• Check that the power cord is properly connected to the AC mains supply.
• Check the fuses, and replace if necessary. See “Changing Fuses” on page 22.
System Reset
Always reset the system as the first troubleshooting step. With the transducers docked in the appropriate slots,
disconnect the power cord from the AC mains supply. Wait until the AC power LED is off, then reconnect
the system to the AC mains supply. A persistent problem indicates a genuine malfunction.
If you think that the display information is suspicious, initiate the power-on self test by switching the base
station to standby, and then switching it on again. All display elements of the transducer and base station
should be displayed briefly before the normal registration process starts.
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