AMIGA 1000 ASSEMBLY LEVEL REPAIR
Required Equipment:
Kickstart Disk
Workbench Disk
Workbench Dealer Demo Disk
Blank Disk or Disk for Testing
Monitor
RAM Expansion Cartridge 1050
Mouse or Keyboard
Known Good Drive
Known Good PCB
Oscilloscope
OPTIONAL: Service Diagnostic Aide
1.2 PRELIMINARY NOTES
, If a SOFTWARE PROBLEM is suspected, verify that the software package operates
^CORRECTLY ON A “ Known Good" system before beginning test on the
'• "Suspected Bad" system.
1.2.1 When the system is POWERED-DOWN, it should be left OFF for at least 5 seconds before
it is powered up again.
IF THIS IS NOT DONE, THE AC POWER SWITCH MAY FAIL.
Whenever possible, RESET the system by depressing the "CNTRL" key and both "A " keys,
simultaneously.
1.2.2 It may be necessary to insert a diskette MORE THAN ONCE before it is seated correctly
in the drive. Continued difficulty in correctly seating the disk indicates a defective or incom
patible disk or a drive mechanical problem.
1.2.3 NEVER remove a disk when the DISK ACCESS LED is ON. Damage to the disk may
result. If the system LOCKS-UP, RESET it by depressing the "CNTRL" key and both "A "
keys, simultaneously.
1.2.4 If a PCB is replaced, ALL case and shield screws must be re-installed.
IF SCREWS ARE MISSING, EXCESSIVE RF NOISE MAY RESULT.
1.2.5 The GROUND STRAP on the drive assembly must be connected when the disk is being
accessed.
IF THE GROUND STRAP IS NOT CONNECTED, READ/WRITE ERRORS MAY OCCUR.
1.2.6 If the system LOCKS-UP when the keyboard is disconnected and connected, it may
indicate a defective keyboard.
1.2.7 System functions that are displayed as GHOST functions are NOT OPERATIONAL at
this time. An attempt to use those functions may appear to be a malfunction of the system.
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