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Corrective Maintenance
CSA 803A Service Manual
6Ć77
After any FRU has been replaced, that particular unit should be checked.
Table 6Ć4 lists the required procedures to perform.
TableĂ6Ć4:ăChecks Required After FRU Replacement
FRU Replaced Checks Required
A1 Strobe Drive Board PowerĆOn Diagnostics
Extended Diagnostics
Internal Clock
A3 M/F Power Connect
Board
PowerĆOn Diagnostics
Extended Diagnostics
A4 Regulator Board PowerĆOn Diagnostics
Extended Diagnostics
Power Supply
Vertical Reference Voltage
Vertical Accuracy
System Vertical RMS Noise
Sweep Rate Accuracy
Triggering
A5 Time Base/Controller
Board
PowerĆOn Diagnostics
Extended Diagnostics
A8 CRT Driver Board Display
A9 Touch Panel Assembly PowerĆOn Diagnostics
Extended Diagnostics
A10 Front Panel Control
Board
PowerĆOn Diagnostics
Extended Diagnostics
A11 Front Panel Button
Board
PowerĆOn Diagnostics
Extended Diagnostics
A12 Rear Panel Board PowerĆOn Diagnostics
Extended Diagnostics
A13 Mother Board PowerĆOn Diagnostics
Extended Diagnostics
A14 Input/Output Board PowerĆOn Diagnostics
Extended Diagnostics
Real Time Clock
A15 MMU Board PowerĆOn Diagnostics
Extended Diagnostics
A17 Executive Processor
Board
PowerĆOn Diagnostics
Extended Diagnostics
A18 Memory Board PowerĆOn Diagnostics
Extended Diagnostics
Checks After FRU
Replacement