Service Manual
Page 4
...Test (POST) sequence 2-4 Symptom tables 2-5 Base printer symptoms 2-5 High-capacity feeder (2000-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 ...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...
...Test (POST) sequence 2-4 Symptom tables 2-5 Base printer symptoms 2-5 High-capacity feeder (2000-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 ...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...
Service Manual
Page 21
... universally adjustable tray - 250- ThinPrint - PRESCRIBE card assembly - 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 4061-010 4061-... Lexmark T64x laser printers are letter quality page printers designed to attach to IBM-compatible personal computers and to the correct field replaceable unit (FRU) or part. Bar code card assembly - 4061-xx0 1. General information The Lexmark™ T64x laser printers are...
... universally adjustable tray - 250- ThinPrint - PRESCRIBE card assembly - 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 4061-010 4061-... Lexmark T64x laser printers are letter quality page printers designed to attach to IBM-compatible personal computers and to the correct field replaceable unit (FRU) or part. Bar code card assembly - 4061-xx0 1. General information The Lexmark™ T64x laser printers are...
Service Manual
Page 41
...8226; "StapleSmart finisher" on page 2-7 Service errors (9xx.xx's) If a service error code appears while you are working on the machine, go to "User status displays" on page 2-31. • User attendance messages are not under the printer when you connect or disconnect any cable or ... the current status of various tests. Use the service error code, user status message, user error message, symptom table, service checks, and diagnostic aids in the format XXX.YY. If a user error message displays, go to repair a malfunctioning printer. Additional information • "Power-On Self Test (...
...8226; "StapleSmart finisher" on page 2-7 Service errors (9xx.xx's) If a service error code appears while you are working on the machine, go to "User status displays" on page 2-31. • User attendance messages are not under the printer when you connect or disconnect any cable or ... the current status of various tests. Use the service error code, user status message, user error message, symptom table, service checks, and diagnostic aids in the format XXX.YY. If a user error message displays, go to repair a malfunctioning printer. Additional information • "Power-On Self Test (...
Service Manual
Page 48
...; Check autocompensator Go to "Paper feed service check" on page 4-76. 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 2-75. Replace the system board. See"System board and inner Replace the...
...; Check autocompensator Go to "Paper feed service check" on page 4-76. 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 2-75. Replace the system board. See"System board and inner Replace the...
Service Manual
Page 49
... "920.xx-Cold fuser service check" on page 2-87. 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...
... "920.xx-Cold fuser service check" on page 2-87. 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
... signal. • Fuser not receiving AC power. • Poor supply line voltage. • Excessive load on for an extended time. 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...
... signal. • Fuser not receiving AC power. • Poor supply line voltage. • Excessive load on for an extended time. 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
Page 51
... to "920.xx-Cold fuser service check" on page 2-87. Diagnostic information 2-11 Go to desired temperature after slope change . 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...
... to "920.xx-Cold fuser service check" on page 2-87. Diagnostic information 2-11 Go to desired temperature after slope change . 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...
Service Manual
Page 52
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 temperature for ...
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 temperature for ...
Service Manual
Page 53
... count between 400,000 and 499,999. Action Go to "920.xx-Cold fuser service check" on for slope change. 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...
... count between 400,000 and 499,999. Action Go to "920.xx-Cold fuser service check" on for slope change. 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 2-87. Fuser page count more than 500,000. 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 92 .52 920 .53 920 .54 920 .56 920 .57 920 .91 Hot roll fell too far below the desired...
... page 2-87. Fuser page count more than 500,000. 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 92 .52 920 .53 920 .54 920 .56 920 .57 920 .91 Hot roll fell too far below the desired...
Service Manual
Page 55
... while printing. Go to desired temperature after slope change . 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 .92 920 .93 920 .94 920 .96 920 .97 922 .02 Hot roll fell too far below the desired...
... while printing. Go to desired temperature after slope change . 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 .92 920 .93 920 .94 920 .96 920 .97 922 .02 Hot roll fell too far below the desired...
Service Manual
Page 56
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 temperature but ... (new enhanced control). Hot roll timed out in trying to reach the final lamp detection temperature. Fuser page count between 0 and 99,999. The control code has been lost. Go to reach the final lamp detection temperature. Fuser page count between 100,000 and 199,999. Hot roll took longer than...
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 temperature but ... (new enhanced control). Hot roll timed out in trying to reach the final lamp detection temperature. Fuser page count between 0 and 99,999. The control code has been lost. Go to reach the final lamp detection temperature. Fuser page count between 100,000 and 199,999. Hot roll took longer than...
Service Manual
Page 57
...or incorrect lamp. • Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. The control code has been lost. Diagnostic information 2-17 Fuser page count between 200,000 and 299,999. • Low wattage or incorrect lamp. • Bad thermistor, ... "922.xx-Cold fuser check" on page 2-89. Go to "922.xx-Cold fuser check" on page 2-89. 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 ...
...or incorrect lamp. • Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. The control code has been lost. Diagnostic information 2-17 Fuser page count between 200,000 and 299,999. • Low wattage or incorrect lamp. • Bad thermistor, ... "922.xx-Cold fuser check" on page 2-89. Go to "922.xx-Cold fuser check" on page 2-89. 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
Page 58
The control code has been lost. Fuser page count between 400,000 and 499,999. • Low wattage or incorrect lamp. • Bad thermistor, circuit, or cabling. • ... AC power. • Poor supply line voltage. Go to "922.xx-Cold fuser check" on page 2-89. 2-18 Service Manual 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...
The control code has been lost. Fuser page count between 400,000 and 499,999. • Low wattage or incorrect lamp. • Bad thermistor, circuit, or cabling. • ... AC power. • Poor supply line voltage. Go to "922.xx-Cold fuser check" on page 2-89. 2-18 Service Manual 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...
Service Manual
Page 59
...2-89. Hot roll took longer than largest time in time (new enhanced control). Go to steady state control in time. 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 trying to reach the beginning lamp detection temperature. The control code has been lost . Hot roll timed out in time. Fuser page ...
...2-89. Hot roll took longer than largest time in time (new enhanced control). Go to steady state control in time. 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 trying to reach the beginning lamp detection temperature. The control code has been lost . Hot roll timed out in time. Fuser page ...
Service Manual
Page 60
...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 .56 922 .57 922 .92 922 .93 922 .94 922 .95 922 .96 922 .97 Hot.... • Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. Control code has been lost. Fuser page count stopped at 500,000 to reach desired temperature after increasing interpage gap. Hot roll reached 'final lamp detection...
...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 .56 922 .57 922 .92 922 .93 922 .94 922 .95 922 .96 922 .97 Hot.... • Bad thermistor, circuit, or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. Control code has been lost. Fuser page count stopped at 500,000 to reach desired temperature after increasing interpage gap. Hot roll reached 'final lamp detection...
Service Manual
Page 61
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 .21 924 .31 ...
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 .21 924 .31 ...
Service Manual
Page 62
...printer. • Lamp has excessive wattage. Open thermistor check failure. Fuser page count over 500,000. Fuser page count not available. Attempting to "925.xx-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...previous wrong lamp detected. Lamp detection performed and found error. Go to "924.xx-Hot fuser service check" on page 2-91. Too hot to POR machine after receiving a 925.01. • 115 V lamp in 220 V printer. • Lamp has excessive wattage. Go to...
...printer. • Lamp has excessive wattage. Open thermistor check failure. Fuser page count over 500,000. Fuser page count not available. Attempting to "925.xx-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...previous wrong lamp detected. Lamp detection performed and found error. Go to "924.xx-Hot fuser service check" on page 2-91. Too hot to POR machine after receiving a 925.01. • 115 V lamp in 220 V printer. • Lamp has excessive wattage. Go to...
Service Manual
Page 63
...Hot fuser service check" on page 2-76. Diagnostic information 2-23 Fuser page count between 400,000 and 499,999. • 115 V lamp in 220 V printer. • Lamp has excessive wattage. Attempting to POR machine after receiving a 925.01. Go to "Main fan" on page 2-91. Go to "925....lamp detected. Fuser page count between 400,000 and 499,999. Lamp detection performed and found error. 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 925 .32 925 .41 925 .42 925 .51 925 .52 925 ...
...Hot fuser service check" on page 2-76. Diagnostic information 2-23 Fuser page count between 400,000 and 499,999. • 115 V lamp in 220 V printer. • Lamp has excessive wattage. Attempting to POR machine after receiving a 925.01. Go to "Main fan" on page 2-91. Go to "925....lamp detected. Fuser page count between 400,000 and 499,999. Lamp detection performed and found error. 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 925 .32 925 .41 925 .42 925 .51 925 .52 925 ...
Service Manual
Page 64
... fan" on page 2-127. Go to "Main fan" on page 2-76. Go to "Toner sensor service check" on page 2-122. 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...; Bad fan. Main fan took too long to "Printhead service check" on page 2-127. Corrupted or non-existent feedback signal. Corrupted feedback signal. Toner sensor error-a problem has been detected with the toner sensor. • Check the toner sensor • Check cable • Check system board An...
... fan" on page 2-127. Go to "Main fan" on page 2-76. Go to "Toner sensor service check" on page 2-122. 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...; Bad fan. Main fan took too long to "Printhead service check" on page 2-127. Corrupted or non-existent feedback signal. Corrupted feedback signal. Toner sensor error-a problem has been detected with the toner sensor. • Check the toner sensor • Check cable • Check system board An...