Oki OKIPAGE 10ex Maintenance Manual page 256

F-1 Option RAM error (ERROR 60)
• Remove the DRAM SIMM. Has the problem been solved?
• Are negative pulses being sent to Pin 83 (DRAS2-N), Pin 84 (DRAS3-N), Pin 85
(DRAS4-N), Pin 86 (DRAS5-N) of the connector (CN1)?
• Yes
40990901TH Rev.1
• Yes Failure of DRAM SIMM.
• No Failure of IC1 (MHM2029-004K) or Main Control PCB (M5B).
Replace D1, D2 (514260).
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