Lexmark T642 Service Manual - Page 50

4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 920 .12 920 .13 920 .14 920 .16 920 .17 920 .21 Hot roll fell too far below the desired temperature while printing. Fuser page count between 100,000 and 199,999. Hot roll too cool while checking for slope change. Fuser page count between 100,000 and 199,999. Hot roll too cool when heating to desired temperature after slope change. Fuser page count between 100,000 and 199,999. Fuser is not increasing in temperature even though the lamp has been on for an extended time. Fuser page count between 100,000 and 199,999. Fuser has been below the desired temperature for too long while the media is in the nip. Fuser page count between 100,000 and 199,999. Hot roll took too long to heat up after transitioning to new enhanced mode. Fuser page count between 200,000 and 299,999. • Bad thermistor, circuit, or cabling. • Noisy thermistor signal. • Fuser not receiving AC power. • Poor supply line voltage. • 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. • 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. • 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. • Incorrect hot roll. • Abrupt change in temperature that has disrupted control. • Bad thermistor, circuit, or cabling. • Fuser not receiving AC power. • Poor supply line voltage. • Low voltage or incorrect lamp. • Incorrect hot roll. 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 "920.xx-Cold fuser service check" on page 2-87. 2-10 Service Manual