IBM 865511Y Hardware Maintenance Manual - Page 197
Undetermined problem, External Cache RAM
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Undetermined problem Check the power supply voltages. See "Power supply" on page 59. If the voltages are correct, return here and continue with the following steps. 1. Power-off the computer. 2. Remove or disconnect the following, one at a time: a. Non-IBM devices b. External devices (modem, printer, or mouse) c. Any adapters d. Memory modules ((Minimum requirement = 1 bank of 64 MB DIMMs) Note Minimum operating requirements vary for each computer. e. Extended video memory f. External Cache g. External Cache RAM h. Hard disk drive i. Diskette drive 3. Power-on the computer to re-test the system. 4. Repeat steps 1 through 3 until you find the failing device or adapter. If all devices and adapters have been removed, and the problem continues, replace the system board. Vedio Netfinity 8655 - Type 8655 189