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SUBJECT: 6803 CONTROL BOARD POWER-UP TEST SEQUENCE
The following is an abbreviated self-test routine for the 6803 Control Board.
1st Rash-Determines if the internal RAM U1 is good. (6803)
2nd Rash-Checks to see if the program ROM U2 is good. (27128)
3rd Flash-Checks to see if the program ROM U3 is good. (27128)
4th Flash-Checks the C-MOS RAM U4. (6116P-3)
5th Flash-Tests U8 PIA-O. (6821)
6th Flash-Tests U7 PIA-1. (6821)
7th Flash-Checks the internal display interrupt generator U1. (6803)
8th Flash-Verifies U12 and U8 operation of the phase B switched illumination voltage. NOTE: Fuse F5 on
the Power Module provides the phase B signal to the Control Board for U12 and U8.
9th Flash-Verifies U1, U11, and U12 operation of the phase A switched illumination voltage. NOTE: Fuse F4
on the Power Module provides the phase A signal to the Control Board for U1, U11, and U12.
SUBJECT: SOUND BOARD SELF-TEST SEQUENCE
The following is an abbreviated self-test routine for the 6809 Sound Board.
1st Flash-Determine if the external ROM U7 is good.
2nd Rash-Checks to see if the external RAM U6 is good.
3rd Rash-Checks the PIA U8.
The following is an abbreviated self-test routine for the Sounds Deluxe (68000) Board:
1st Rash-Determines if the ROM U11 is good.
2nd Rash-Determines if the ROM U12 is good.
3rd Flash-Determines if the ROM U13 is good.
4th Rash-Determines if the ROM U14 is good.
5th Flash-Checks to see if the RAM U9 and U10 is good.
6th Rash-Checks the PIA U7.
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