IBM 4247-003 Maintenance Manual - Page 385
Logic Board Component Inspection Reference, For Models 001 and 002
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Table 52. Models 001 and 002 logic board jumper location to enable +5 V dc on pin 18: 4247 001, 002 Logic Board Level : Install jumper between pins: Level 1 , 2 logic board 2 and 3 Level 3 logic board 1 and 2 4. Run the T&D program in automatic mode. For Model A00, see "How To Run the Test and Diagnostic (T&D) Programs" on page 161. For Models 001 and 002, see "How To Run the Test and Diagnostic (T&D) Programs" on page 201. Ensure that T&D11, T&D12, T&D15, T&D16, and T&D17 are adjusted, if indicated. 5. Use the printer configuration printout to verify configuration settings. See IBM 4247 Printer Models 001, 002 User's Guide. Logic Board Component Inspection Reference Use the following circuit diagrams and Table 53, to identify damaged circuits. Note: Q1, Q2, and Q6 are vertically mounted. U34, U35, and U36 are mounted to heat sinks. Chapter 5. Removals and Adjustments 385
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