Lexmark T642 Service Manual - Page 55

4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 920 .92 920 .93 920 .94 920 .96 920 .97 922 .02 Hot roll fell too far below desired temperature while printing. Fuser page count not available. Hot roll too cool while checking for slope change. Fuser page count not available. Hot roll too cool when heating to desired temperature after slope change. Fuser page count not available. Fuser is not increasing in temperature even though the lamp has been on for an extended time. Fuser page count not available. Fuser has been below the desired temperature for too long while media is in the nip. Fuser page count not available. Hot roll took too long to reach the beginning lamp detection temperature. Fuser page count between 0 and 99,999. • Bad thermistor, circuit, or cabling. • Noisy thermistor signal. • Fuser not receiving AC power. • Poor supply line voltage. • Excessive load on the fuser. • Low voltage or incorrect lamp. • Incorrect hot roll. • Bad thermistor, circuit, or cabling. • Noisy thermistor signal. • Fuser not receiving AC power. • Poor supply line voltage. • Excessive load on the fuser. • Low voltage or incorrect lamp. • Incorrect hot roll. • Bad thermistor, circuit, or cabling. • Noisy thermistor signal. • Fuser not receiving AC power. • Poor supply line voltage. • Excessive load on the fuser. • Low voltage or incorrect lamp. • Incorrect hot roll. • Fuser is not receiving AC power. • Poor supply line voltage. • Bad thermistor, circuit, or cabling. • Very noisy thermistor signal. • Fuser not receiving AC power. • Poor supply line voltage. • Excessive load on the fuser. • Low voltage or incorrect lamp. • Abrupt change in temperatures that has disrupted control. • Low wattage or incorrect lamp. • Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. Action Go to "920.xx-Cold fuser service check" on page 2-87. Go to "920.xx-Cold fuser service check" on page 2-87. Go to "920.xx-Cold fuser service check" on page 2-87. Go to "920.xx-Cold fuser service check" on page 2-87. Go to "920.xx-Cold fuser service check" on page 2-87. Go to "922.xx-Cold fuser check" on page 2-89. Diagnostic information 2-15