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
...code card assembly - Lexmark PrintCryption™ card - Envelope feeder General information 1-1 IPDS card assembly and SCS/TNe - PRESCRIBE card assembly - Use the service error codes, user status messages, user error... - ThinPrint - 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...64MB • Hard disk-20GB+ with adapter • Integrated network options - After you to verify the repair. External serial adapter - The Lexmark T64x laser...
...code card assembly - Lexmark PrintCryption™ card - Envelope feeder General information 1-1 IPDS card assembly and SCS/TNe - PRESCRIBE card assembly - Use the service error codes, user status messages, user error... - ThinPrint - 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...64MB • Hard disk-20GB+ with adapter • Integrated network options - After you to verify the repair. External serial adapter - The Lexmark T64x laser...
Service Manual
Page 41
... displays. The following tables are indicated by a three-digit error code followed by a two or three-digit error code that provides the user with information that error. Use the service error code, user status message, user error message, symptom table, service checks, and diagnostic aids in...on page 2-6 • "Output expander" on page 2-6 • "StapleSmart finisher" on page 2-7 Service errors (9xx.xx's) If a service error code appears while you to the printer. If a user error message displays, go to "User status displays" on page 2-31. • User attendance messages are not...
... displays. The following tables are indicated by a three-digit error code followed by a two or three-digit error code that provides the user with information that error. Use the service error code, user status message, user error message, symptom table, service checks, and diagnostic aids in...on page 2-6 • "Output expander" on page 2-6 • "StapleSmart finisher" on page 2-7 Service errors (9xx.xx's) If a service error code appears while you to the printer. If a user error message displays, go to "User status displays" on page 2-31. • User attendance messages are not...
Service Manual
Page 48
... board and inner shield removal" on page 4-76. Replace the system board. See"System board and inner Replace the system board. 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 "Paper feed service check" on page 2-112.
... board and inner shield removal" on page 4-76. Replace the system board. See"System board and inner Replace the system board. 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 "Paper feed service check" on page 2-112.
Service Manual
Page 49
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 heat up ...
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 heat up ...
Service Manual
Page 50
... too long to "920.xx-Cold fuser service check" on page 2-87. Action Go to heat up after slope change . 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...
... too long to "920.xx-Cold fuser service check" on page 2-87. Action Go to heat up after slope change . 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
...-Cold fuser service check" on the fuser. • Low voltage or incorrect lamp. • Incorrect hot roll. • Abrupt 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...
...-Cold fuser service check" on the fuser. • Low voltage or incorrect lamp. • Incorrect hot roll. • Abrupt 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
... fuser service check" on page 2-87. Fuser page count between 300,000 and 399,999. Go to new enhanced mode. 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 service check" on page 2-87. Fuser page count between 300,000 and 399,999. Go to new enhanced mode. 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
Page 53
... roll. • Abrupt change . Go to heat up after slop change. 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...
... roll. • Abrupt change . Go to heat up after slop change. 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
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 temperature for ...
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 temperature for ...
Service Manual
Page 55
... 2-15 Fuser page count not available. Hot roll took too long 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 920 .92 920 .93 920 .94 920 .96 920 .97 922 .02 Hot roll fell too far below the desired...
... 2-15 Fuser page count not available. Hot roll took too long 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 920 .92 920 .93 920 .94 920 .96 920 .97 922 .02 Hot roll fell too far below the desired...
Service Manual
Page 56
... than largest time in trying to "922.xx-Cold fuser check" on page 2-89. Fuser page count between 100,000 and 199,999. The control code has been lost. Hot roll timed out in lookup table. Action Go to reach the final lamp detection temperature. Go to "922.xx-Cold fuser... trying to "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 .03 922 .04 922 .06 922 .07 922 .12 922 .13 922 .14 Hot roll reached final lamp detection...
... than largest time in trying to "922.xx-Cold fuser check" on page 2-89. Fuser page count between 100,000 and 199,999. The control code has been lost. Hot roll timed out in lookup table. Action Go to reach the final lamp detection temperature. Go to "922.xx-Cold fuser... trying to "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 .03 922 .04 922 .06 922 .07 922 .12 922 .13 922 .14 Hot roll reached final lamp detection...
Service Manual
Page 57
.... Go to "922.xx-Cold fuser check" on page 2-89. Diagnostic information 2-17 Hot roll took longer than largest time in lookup table. The control code has been lost. Action Go to "922.xx-Cold fuser check" on page 2-89. Go to "922.xx-Cold fuser check" on page 2-89. ... not receiving sufficient AC power. • Poor supply line voltage. Go to steady state control in time (new enhanced control). 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 did ...
.... Go to "922.xx-Cold fuser check" on page 2-89. Diagnostic information 2-17 Hot roll took longer than largest time in lookup table. The control code has been lost. Action Go to "922.xx-Cold fuser check" on page 2-89. Go to "922.xx-Cold fuser check" on page 2-89. ... not receiving sufficient AC power. • Poor supply line voltage. Go to steady state control in time (new enhanced control). 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 did ...
Service Manual
Page 58
... reached final lamp detection temperature but took longer than largest time in time (new enhanced control). Hot roll timed out in lookup table. 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. Fuser page... Go to "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 .32 922 .33 922 .34 922 .35 922 .36 922 .37 922 .42 922 .43 Hot roll took too...
... reached final lamp detection temperature but took longer than largest time in time (new enhanced control). Hot roll timed out in lookup table. 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. Fuser page... Go to "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 .32 922 .33 922 .34 922 .35 922 .36 922 .37 922 .42 922 .43 Hot roll took too...
Service Manual
Page 59
...cabling. • Excessive load on the fuser. • Fuser not receiving sufficient AC power. • Poor supply line voltage. The control code has been lost . Hot roll took longer than largest time in lookup table. After hot roll lamp detection, did not reach operating temperature in ...; 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 .44 922 .45 922 .46 922 .47 922 .52 922 .53 922 .54 922 .55 Hot roll...
...cabling. • Excessive load on the fuser. • Fuser not receiving sufficient AC power. • Poor supply line voltage. The control code has been lost . Hot roll took longer than largest time in lookup table. After hot roll lamp detection, did not reach operating temperature in ...; 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 .44 922 .45 922 .46 922 .47 922 .52 922 .53 922 .54 922 .55 Hot roll...
Service Manual
Page 60
...lamp detection temperature. Hot roll reached 'final lamp detection temperature' but took too long to "922.xx-Cold fuser check" on page 2-89. Control code has been lost. Fuser page count not available. • Low wattage or incorrect lamp. • Excessive load on page 2-89. Go to "...8226; Poor supply line voltage. Go to steady state control in trying to reach desired temperature after increasing interpage gap. 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 ...
...lamp detection temperature. Hot roll reached 'final lamp detection temperature' but took too long to "922.xx-Cold fuser check" on page 2-89. Control code has been lost. Fuser page count not available. • Low wattage or incorrect lamp. • Excessive load on page 2-89. Go to "...8226; Poor supply line voltage. Go to steady state control in trying to reach desired temperature after increasing interpage gap. 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 ...
Service Manual
Page 61
.... Fuser page count between 100,000 and 199,999. Go to "923.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...
.... Fuser page count between 100,000 and 199,999. Go to "923.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
Page 62
... count between 0 and 99,999. Go to do lamp detection and NVRAM bit indicates previous wrong lamp detected. 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 .22 925 .31 Open thermistor check failure. Open thermistor check failure. Lamp detection performed and found error. Lamp detection performed and found error. Fuser ...
... count between 0 and 99,999. Go to do lamp detection and NVRAM bit indicates previous wrong lamp detected. 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 .22 925 .31 Open thermistor check failure. Open thermistor check failure. Lamp detection performed and found error. Lamp detection performed and found error. Fuser ...
Service Manual
Page 63
.... Go to "925.xx-Hot fuser service check" on page 2-76. Go to "Main fan" 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 .91 925 .92 927 .00 Too hot to... detected. Go to "Main fan" on page 2-91. Go to "925.xx-Hot fuser service check" on page 2-76. Lamp detection performed and found error. Attempting to internal fan problem. Attempting to POR machine after receiving a 925.01. Diagnostic information 2-23 Go to a previous write failure. • 115...
.... Go to "925.xx-Hot fuser service check" on page 2-76. Go to "Main fan" 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 .91 925 .92 927 .00 Too hot to... detected. Go to "Main fan" on page 2-91. Go to "925.xx-Hot fuser service check" on page 2-76. Lamp detection performed and found error. Attempting to internal fan problem. Attempting to POR machine after receiving a 925.01. Diagnostic information 2-23 Go to a previous write failure. • 115...
Service Manual
Page 64
... toner sensor. • Check the toner sensor • Check cable • Check system board An error has been detected. Go to "Toner sensor service check" on page 2-76. 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...
... toner sensor. • Check the toner sensor • Check cable • Check system board An error has been detected. Go to "Toner sensor service check" on page 2-76. 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...