Service Manual
Page 4
...sheet) symptoms 2-5 Paper tray symptoms 2-6 Duplex option symptoms 2-6 Envelope feeder symptoms 2-6 Output expander 2-6 StapleSmart finisher 2-7 Messages and error codes 2-8 Service error codes 2-8 User status displays 2-31 User attendance messages 2-32 User line 2 link messages 2-43 Check device connection messages 2-43 User attendance... messages-paper jams and paper handling errors (2xx.xx 2-44 Service checks 2-72 5-Bin mailbox service check 2-72 900.xx Error code service check 2-75 927.xx Fan service check 2-76 Main fan 2-...
...sheet) symptoms 2-5 Paper tray symptoms 2-6 Duplex option symptoms 2-6 Envelope feeder symptoms 2-6 Output expander 2-6 StapleSmart finisher 2-7 Messages and error codes 2-8 Service error codes 2-8 User status displays 2-31 User attendance messages 2-32 User line 2 link messages 2-43 Check device connection messages 2-43 User attendance... messages-paper jams and paper handling errors (2xx.xx 2-44 Service checks 2-72 5-Bin mailbox service check 2-72 900.xx Error code service check 2-75 927.xx Fan service check 2-76 Main fan 2-...
Service Manual
Page 21
.... PRESCRIBE card assembly - Envelope feeder General information 1-1 Options The following models: Model name Lexmark T640 Lexmark T640n Lexmark T642 Lexmark T642n Lexmark T644 Lexmark T644n Configuration Non-network Network Non-network Network Non-network Network Machine type 4061-000 4061-...disk-20GB+ with adapter • Integrated network options - Use the service error codes, user status messages, user error messages, service checks, and diagnostic aids to verify the repair. External serial adapter - MarkNet™ Print Servers - Lexmark PrintCryption™ card -
.... PRESCRIBE card assembly - Envelope feeder General information 1-1 Options The following models: Model name Lexmark T640 Lexmark T640n Lexmark T642 Lexmark T642n Lexmark T644 Lexmark T644n Configuration Non-network Network Non-network Network Non-network Network Machine type 4061-000 4061-...disk-20GB+ with adapter • Integrated network options - Use the service error codes, user status messages, user error messages, service checks, and diagnostic aids to verify the repair. External serial adapter - MarkNet™ Print Servers - Lexmark PrintCryption™ card -
Service Manual
Page 41
... User attendance messages are indicated by a period and additional numbers in this chapter to determine the corrective action necessary to "Service error codes" on the side of the display unless invoked, and then Power Saver displays. Use the handholds on page 2-8, and take the...personal safety and to prevent damage to "Symptom tables" on the current status of various tests. Service error codes are working on page 2-7 Service errors (9xx.xx's) If a service error code appears while you have a symptom, go to repair a malfunctioning printer. The following tables are available...
... User attendance messages are indicated by a period and additional numbers in this chapter to determine the corrective action necessary to "Service error codes" on the side of the display unless invoked, and then Power Saver displays. Use the handholds on page 2-8, and take the...personal safety and to prevent damage to "Symptom tables" on the current status of various tests. Service error codes are working on page 2-7 Service errors (9xx.xx's) If a service error code appears while you have a symptom, go to repair a malfunctioning printer. The following tables are available...
Service Manual
Page 48
...check" on page 2-128. 2-8 Service Manual 4061-xx0 Messages and error codes Service error codes Service error codes are generally non-recoverable except in an intermittent condition when you can POR the printer to "900.xx Error code service check" on page 2-112. DC pick motor acceleration stall (autocompensator...system board • Check autocompensator motor Go to "Paper feed service check" on page 4-76. Problem with transfer- Service error codes (9xx.xx) Error code Sub codes Display text Description Action 900 .xx 901 .xx 902 .xx 903 .xx 904 .xx 905 .xx 906 .xx ...
...check" on page 2-128. 2-8 Service Manual 4061-xx0 Messages and error codes Service error codes Service error codes are generally non-recoverable except in an intermittent condition when you can POR the printer to "900.xx Error code service check" on page 2-112. DC pick motor acceleration stall (autocompensator...system board • Check autocompensator motor Go to "Paper feed service check" on page 4-76. Problem with transfer- Service error codes (9xx.xx) Error code Sub codes Display text Description Action 900 .xx 901 .xx 902 .xx 903 .xx 904 .xx 905 .xx 906 .xx ...
Service Manual
Page 49
... has been below the desired temperature while in standby. Go to "920.xx-Cold fuser service check" on page 2-87. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 920 .01 920 .02 920 .03 920 .04 920 .06 920. .07 920 .11 Hot roll took too long to...
... has been below the desired temperature while in standby. Go to "920.xx-Cold fuser service check" on page 2-87. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 920 .01 920 .02 920 .03 920 .04 920 .06 920. .07 920 .11 Hot roll took too long to...
Service Manual
Page 50
... desired temperature while printing. Fuser page count between 100,000 and 199,999. Fuser is not increasing in the nip. 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...
... desired temperature while printing. Fuser page count between 100,000 and 199,999. Fuser is not increasing in the nip. 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...
Service Manual
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Fuser page count between 200,000 and 299,999. Fuser page count between 200,000 and 299,999. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 920 .22 920 .23 920 .24 920 .26 920 .27 920 .31 Hot roll fell too far below the desired temperature for ...
Fuser page count between 200,000 and 299,999. Fuser page count between 200,000 and 299,999. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 920 .22 920 .23 920 .24 920 .26 920 .27 920 .31 Hot roll fell too far below the desired temperature for ...
Service Manual
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...; Fuser not receiving AC power. • Poor supply line voltage. • Low voltage or incorrect lamp. • Incorrect hot roll. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 920 .32 920 .33 920 .34 920 .36 920 .37 920 .41 Hot roll fell too far below the desired...
...; Fuser not receiving AC power. • Poor supply line voltage. • Low voltage or incorrect lamp. • Incorrect hot roll. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 920 .32 920 .33 920 .34 920 .36 920 .37 920 .41 Hot roll fell too far below the desired...
Service Manual
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...; Incorrect hot roll. • Abrupt change . Go to new enhanced mode. Fuser page count between 400,000 and 499,999. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 920 .42 920 .43 920 .44 920 .46 920 .47 920 .51 Hot roll fell too far below the desired...
...; Incorrect hot roll. • Abrupt change . Go to new enhanced mode. Fuser page count between 400,000 and 499,999. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 920 .42 920 .43 920 .44 920 .46 920 .47 920 .51 Hot roll fell too far below the desired...
Service Manual
Page 54
... page count more than 500,000. Fuser count more than 500,000. Fuser has been below desired temperature while printing. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 92 .52 920 .53 920 .54 920 .56 920 .57 920 .91 Hot roll fell too far below the desired...
... page count more than 500,000. Fuser count more than 500,000. Fuser has been below desired temperature while printing. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 92 .52 920 .53 920 .54 920 .56 920 .57 920 .91 Hot roll fell too far below the desired...
Service Manual
Page 55
... thermistor signal. • Fuser not receiving AC power. • Poor supply line voltage. • Excessive load on for slope change. 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 the desired...
... thermistor signal. • Fuser not receiving AC power. • Poor supply line voltage. • Excessive load on for slope change. 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 the desired...
Service Manual
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.... Fuser page count between 0 and 99,999. Go to "922.xx-Cold fuser check" on page 2-89. 2-16 Service Manual 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 922 .03 922 .04 922 .06 922 .07 922 .12 922 .13 922 .14 Hot roll reached final lamp detection...
.... Fuser page count between 0 and 99,999. Go to "922.xx-Cold fuser check" on page 2-89. 2-16 Service Manual 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 922 .03 922 .04 922 .06 922 .07 922 .12 922 .13 922 .14 Hot roll reached final lamp detection...
Service Manual
Page 57
... lamp. • Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. The control code has been lost. Fuser has taken too long to "922.xx-Cold fuser check" on page 2-89. Go to "922.xx-Cold fuser check"...8226; Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 922 .16 922 .17 922 .22 922 .23 922 .24 922 .25 922 .26 922 .27 Hot roll ...
... lamp. • Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. The control code has been lost. Fuser has taken too long to "922.xx-Cold fuser check" on page 2-89. Go to "922.xx-Cold fuser check"...8226; Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 922 .16 922 .17 922 .22 922 .23 922 .24 922 .25 922 .26 922 .27 Hot roll ...
Service Manual
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4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 922 .32 922 .33 922 .34 922 .35 922 .36 922 .37 922 .42 922 .43 Hot roll took too long to ...; Low wattage or incorrect lamp. • Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. The control code has been lost. Go to "922.xx-Cold fuser check" on page 2-89. Go to "922.xx-Cold fuser check" on page 2-89. Hot roll...
4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 922 .32 922 .33 922 .34 922 .35 922 .36 922 .37 922 .42 922 .43 Hot roll took too long to ...; Low wattage or incorrect lamp. • Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. The control code has been lost. Go to "922.xx-Cold fuser check" on page 2-89. Go to "922.xx-Cold fuser check" on page 2-89. Hot roll...
Service Manual
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...• Fuser not receiving sufficient AC power. • Poor supply line voltage. Go to reach the final lamp detection temperature. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 922 .44 922 .45 922 .46 922 .47 922 .52 922 .53 922 .54 922 .55 Hot roll timed ...out in time (new enhanced control). The control code has been lost . Hot roll did not roll over to "922.xx-Cold fuser check" ...
...• Fuser not receiving sufficient AC power. • Poor supply line voltage. Go to reach the final lamp detection temperature. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 922 .44 922 .45 922 .46 922 .47 922 .52 922 .53 922 .54 922 .55 Hot roll timed ...out in time (new enhanced control). The control code has been lost . Hot roll did not roll over to "922.xx-Cold fuser check" ...
Service Manual
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...-Cold fuser check" on the fuser. • Fuser not receiving sufficient AC power. • Poor supply line voltage. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 922 .56 922 .57 922 .92 922 .93 922 .94 922 .95 922 .96 922 .97 Hot roll ... fuser check" on page 2-89. Hot roll timed out in time (new enhanced control). Go to reach desired temperature after increasing interpage gap. Control code has been lost. Fuser page count not available. • Low wattage or incorrect lamp. • Bad thermistor, circuit, or cabling. • ...
...-Cold fuser check" on the fuser. • Fuser not receiving sufficient AC power. • Poor supply line voltage. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 922 .56 922 .57 922 .92 922 .93 922 .94 922 .95 922 .96 922 .97 Hot roll ... fuser check" on page 2-89. Hot roll timed out in time (new enhanced control). Go to reach desired temperature after increasing interpage gap. Control code has been lost. Fuser page count not available. • Low wattage or incorrect lamp. • Bad thermistor, circuit, or cabling. • ...
Service Manual
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... 299,999. Fuser page count between 0 and 99,999. Go to "924.xx-Hot fuser service check" on page 2-90. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 923 .01 923 .11 923 .21 923 .31 923 .41 923 .51 923 .91 924 .01 924 .11 924 .21...
... 299,999. Fuser page count between 0 and 99,999. Go to "924.xx-Hot fuser service check" on page 2-90. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 923 .01 923 .11 923 .21 923 .31 923 .41 923 .51 923 .91 924 .01 924 .11 924 .21...
Service Manual
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...-Hot fuser service check" on page 2-91. Go to "925.xx-Hot fuser service check" on page 2-91. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 924 .41 924 .51 924 .91 925 .01 925 .02 925 .11 925 .12 925 .21 925 ....Thermistor cable not connected or thermistor actually open. • 115 V lamp in 220 V printer. • Lamp has excessive wattage. Lamp detection performed and found error. Attempting to POR machine after receiving a 925.01. • 115 V lamp in 220 V printer. • Lamp has excessive wattage. Attempting to POR...
...-Hot fuser service check" on page 2-91. Go to "925.xx-Hot fuser service check" on page 2-91. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 924 .41 924 .51 924 .91 925 .01 925 .02 925 .11 925 .12 925 .21 925 ....Thermistor cable not connected or thermistor actually open. • 115 V lamp in 220 V printer. • Lamp has excessive wattage. Lamp detection performed and found error. Attempting to POR machine after receiving a 925.01. • 115 V lamp in 220 V printer. • Lamp has excessive wattage. Attempting to POR...
Service Manual
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... POR machine after receiving a 925.01. Fuser page count between 400,000 and 499,999. Lamp detection performed and found error. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 925 .32 925 .41 925 .42 925 .51 925 .52 925 .91 925 .92 927 .00... a 925.01. Diagnostic information 2-23 Attempting to "925.xx-Hot fuser service check" on page 2-91. Too hot to internal fan problem. Service fan error. • Loose connector. • External blockage of the fan, preventing it from turning. • Bad fan. 927 .01 Main fan stalled. •...
... POR machine after receiving a 925.01. Fuser page count between 400,000 and 499,999. Lamp detection performed and found error. 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 925 .32 925 .41 925 .42 925 .51 925 .52 925 .91 925 .92 927 .00... a 925.01. Diagnostic information 2-23 Attempting to "925.xx-Hot fuser service check" on page 2-91. Too hot to internal fan problem. Service fan error. • Loose connector. • External blockage of the fan, preventing it from turning. • Bad fan. 927 .01 Main fan stalled. •...
Service Manual
Page 64
... has been detected with the toner sensor. • Check the toner sensor • Check cable • Check system board An error has been detected. Mirror motor lost HSYNC. • Check printhead • Check cables and connections • Check system board Mirror motor locked, no first HSYNC ... system board Action Go to "Main fan" on page 2-76. Go to "Main fan" on page 2-122. 2-24 Service Manual 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 927 .02 927 .03 927 .04 927 .05 927 .06 927 .07 929 .00 929 .66 929 .67 930 .00...
... has been detected with the toner sensor. • Check the toner sensor • Check cable • Check system board An error has been detected. Mirror motor lost HSYNC. • Check printhead • Check cables and connections • Check system board Mirror motor locked, no first HSYNC ... system board Action Go to "Main fan" on page 2-76. Go to "Main fan" on page 2-122. 2-24 Service Manual 4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description 927 .02 927 .03 927 .04 927 .05 927 .06 927 .07 929 .00 929 .66 929 .67 930 .00...