HF Series Generators
T roubleshooting
TR-1005R4
6
The ATP Console CPU Board operates from a 12 VDC Non-Regulated Supply
located in the Generator Cabinet that supplies to a 5 VDC Switching Regulator
located in the ATP Console CPU Board.
T urn the Generator ON and with a Digital Multimeter measure between:
• TS1-30 (GND) and TS1-29 (+12 V Unr.) on the Generator Cabinet.
Check that the voltage at this point is +12 ±1.5 VDC.
• TP GND and TP +5 on the ATP Console CPU Board. Check that the
voltage at this point is +5 ±0.2 VDC.
No adjustments are required for both voltage measures. The ATP
Console CPU Board may be located inside the Console or inside
the Generator Cabinet.
2.2 MICROPROCESSORS AND GENERAL OPERATION
The following LEDs indicate the proper operation of each Microprocessor in the
Generator:
• The LED DS1 located on the HT Controller Board blinks fast during
power up, then slows to a steady blink of about 2 per second, indicating
that the Microprocessor U5 is operating normally.
• The LED DS2 located on the ATP Console CPU Board normally blinks
at the same rate as LED DS1 on the HT Controller Board, indicating that
the Console Microprocessor U30 is operating correctly.
• The LED DS1 located on the Fluoro CPU Board only blinks in Fluoro
mode indicating that the Fluoro Microprocessor is operating correctly.
Also observe the following LEDs to facilitate general troubleshooting:
• When LED DS1 located on the Interface Control Board is ON (lighting),
it indicates that the Generator is ON.
• The LED DS1 located on the ATP Console CPU Board is normally ON
(lighting), indicating that the Watch-Dog Timer of the Console is
operating and insuring the correct timing of data communications with
the HT Controller Board.
Note .
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