IBM 6500-V20 Maintenance Manual - Page 71
Display Messages, START, CAUTION: DO NOT TOUCH THE POWER SUPPLY, Table 3. Message List
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Operator Panel Message 080 POWER SUPPLY HOT Display Messages Table 3. Message List Explanation Corrective Action The printer has sensor circuits that sample the operating temperature of key components of the power supply. When higher than normal temperatures are sensed, print speed is automatically reduced. If the printer runs at reduced speed for an extended period of time, the POWER SUPPLY HOT message is sent to the LCD and printing stops, allowing printer components to cool down. Pressing the START key resumes the print task. Check the operating environment. A severe environment is one with an ambient temperature at or above above 40° Celsius (104° Fahrenheit) or is dirty enough to create blockage of the cabinet fan vents. The printer must never be run at ambient temperatures greater than 40° Celsius (104° Fahrenheit). If the printer is located in such an environment, relocate it to a cooler, cleaner area. 1. Inspect printer environment for severity. Advise the user to move the printer to cooler, cleaner location. 2. Run a print test. If the message appears, do the power supply operational check (page 258). If the power supply fails the check, replace it. If it passes the check, go to the next step. 3. Check the kinds of print jobs the user is running: look for very dense graphics and layouts. Advise the user to run jobs in smaller batches. 4. Power off and unplug the printer. Remove the paper guide assembly or pedestal top cover. Check that the power supply guard/air deflector is correctly positioned over the power supply board. CAUTION: DO NOT TOUCH THE POWER SUPPLY, but hold your hand close enough to it to check for heat radiating off the power supply board. If the power supply is noticeably hot, replace it. 5. Check that all fan cables are connected. 6. Inspect vents and fan airways for obstructions. Look underneath cabinet models for items blocking the cabinet exhaust vents. 7. Replace the power supply if you did not do so earlier. 8. Install paper guide assembly or pedestal top cover. Plug in the printer and power it on. Load paper. Run the "All E's" print test for 5 to 10 minutes. If the problem reappears, the controller board or microcode is suspect. Do the following: 9. Save the printer configuration values. (Refer to the User's Manual.) 10. Clear NVRAM (page 237). 11. Download and install the latest code from IBM First (page 231). 71
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