AMIGA 1000 ASSEMBLY LEVEL REPAIR
1.9 PCB CHECK
NOTE: Initially, it may be necessary to replace the PCB en
tirely to check if a PCB EXCHANGE is necessary.
Follow the disassembly/assembly instructions in Sec
tions 2 and 3. Once the DIAGNOSTIC AIDE is available
in the field, you may confirm proper operation of the
system by following these steps:
1.9.1 Place a “ known good" PCB on the bench beside the unit under test.
• Refer to SECTION 2, COMPUTER DISASSEMBLY, to open case and remove shield.
1.9.2 The DIAGNOSTIC AIDE is a straight-through test device that enables you to run the system
from the “ known good” board. Position the DIAGNOSTIC AIDE over the holes in the casework
at the front of the unit.
1.9.3 Remove the cables from the unit PCB and connect them to the DIAGNOSTIC AIDE as indicated.
1.9.4 Attach the DIAGNOSTIC AIDE cables to the “ known good" board and it will now run the
system.
1.9.5 Return to SYSTEM TEST and begin test from the start.
• If the system now PASSES all tests, EXCHANGE THE PCB ASSEMBLY.
• If the system still FAILS, verify that your "known good" PCB is in fact GOOD.
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