General Troubleshooting Procedure - Omron 8025G Maintenance Manual

MAINTENANCE AND REPAIR
SECTION 6
6.3.6
General Troubleshooting Procedure
A general procedure for locating a faulty component follows:
1. Evaluate all complaints and symptoms together, rather than indivi-
dually.
2. Determine the section, or sections, in the terminal that are
operating incorrectly. The terminal contains the following
sections:
Cursor Control Card (S lot
1)
Video Control Card (Slot 2)
Refresh Buffer Card (Slot 3)
Timing Control Card (Slot
4)
Refresh Memory Card (Slot
5)
Refresh Control Card (Slot
6)
Processor Card (Slot
7)
Program Memory Card (Slot 8)
RS232 Interface Card Modem (Slot 9)
RS232 Interface.Card, Storage (Slot 10)
RS232 . Interface Card, Printer (Slot 11)
Terminator Card (Slot 12)
Regulator Card (Slot REG)
LED Assembly
Keyboard Assembly
Power Supply Assembly
CRT Monitor Assembly
Such determinations can usually bE' made by visual inspection,
ohserving the display, and listening to the sounds of the
terminal. Also use Tahle 6-1 to assist you in isolating a
faulty section.
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