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F.O.560-1 Bally Electronic Pinball Repair Procedures for Module and component replacement manual.
June 29, 1978.
Manual includes:
Introduction to repair procedures, Description of self diagnostic tests, Recommended general practices, Diagnostic table for MPU module A5Diagnostic table for lamp driver module A5Diagnostic table for display driver module A1Diagnostic table for solenoid driver module A3Diagnostic table for switch matrix Diagnostic table for voltage regulator (P/0 A3)Diagnostic table for power transformer module A2Diagnositc table for sound module A8
72 page manual for the very popular BALLY (and STERN) electronic coin-op games made from 1977 to 1978.
It has two sections of troubleshooting instructions for isolating problems to both the module and component level. Includes pictorial guide and parts lists (but not schematic diagrams) of all major electronic assemblies.
One of these books was shipped in every new BALLY machine made in this era, but most seem to have disappeared just when you need them most. This is the single most useful document for taking care of your 77-78 BALLY or STERN electronic pinball machine.
Reference:
FO-560-1