Lexmark C736 Service Manual
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Diagnostic information2-95 5026 Go Back Previous Next 2Turn the printer off, and then remove the rear frame cover. See “Rear frame cover removal” on page 4-33. Reseat the transport cable in connector JTPS1 (A). Does the error clear?Problem resolved. Go to step 3. 3Check the transport cable in connector JTPS1 for pinch points and for any other damage to the cable or connector. Is the cable damaged?Replace the transport cable. See “Transport cable removal” on page 4-170. Go to step 4. 4Check the continuity at JTPS1, pins 1–10). Is there continuity?Go to step 5. Replace the cartridge motor1/fuser motor cable. See “Cartridge motor 1/ fuser cable removal” on page 4-62. 5Replace the transport belt assembly. See “Transfer module removal” on page 4-168. Does the error clear?Problem resolved. Replace the system board. See “System board removal” on page 4-153. Step Questions / actions Yes No 1JSB1JBIN1 JFAN1JFUSER1 JBOR1JHVPS1 JMIRR1JBLW1 JCVR1 JCVR1 JLVPS2 JLVPS2 JCARTP1 JCARTS1 JCARTS2 JCARTP2 JDVR1 JTPS1 JOPT1 JFDS1 JINT1 JFDPCK1JTRAY1JSEC1 JDX1 JT12J5 JDIMM1JOPP1 JOPP1 JT1 JUSB1 JBOOT1 JFMUSB1 J49 JTWF1 JTDBUG1 1111 11 1 11 1 1 1 1 1 1 1 1 1 11 1 1111 JTLBT1 JPH1 F5F6F7 F9 F10F12F13F141 1J1011 A 110
2-96Service Manual 5026 Go Back Previous Next 920.04—POST (power-on self test) error service check Step Questions / actions Yes No 1Turn the printer off, and then remove the rear frame cover. See “Rear frame cover removal” on page 4-33. Reseat the cables in connectors JCARTP1 (A) and JCARTS1 (B). Does the error clear?Problem resolved. Go to step 2. 2Check the cartridge motor 1/fuser cable in connector JCARTP1 and JCARTS1 for pinch points and the cables or connectors for any other damage. Are the cables damaged?Replace the cartridge motor1/fuser cable. See “Cartridge motor 1/fuser cable removal” on page 4-62. Go to step 3. 3Remove the right cover.See “Right cover removal” on page 4-37. Check the cartridge motor 1/fuser motor cable (A) for proper connection to the EP drive assembly, pinch points for the cable, and damage to the cable or connector. Is either cable damaged?Replace the cartridge motor 1/fuser motor cable. See “Cartridge motor 1/ fuser cable removal” on page 4-62.Go to step 4. 1JSB1JBIN1 JFAN1JFUSER1 JBOR1JHVPS1 JMIRR1JBLW1 JCVR1 JLVPS2 JCARTP1 JCARTS1 JCARTS2 JCARTP2 JDVR1 JTPS1 JOPT1 JFDS1 JINT1 JFDPCK1JTRAY1JSEC1 JDX1 JT12J5 JDIMM1JOPP1 JT1 JUSB1 JBOOT1 JFMUSB1 J49 JTWF1 JTDBUG1 1111 11 1 11 1 1 1 1 1 1 1 1 1 11 1 1111 JTLBT1 JPH1 F5F6F7 F9 F10F12F13F141 1J1011 A B
Diagnostic information2-97 5026 Go Back Previous Next 4Check the continuity of JCARTP1, pins 4, 5, and 6 and JCARTS1, pins 7 through 12. Is there continuity?Go to step 5. Replace the cartridge motor 1/fuser motor cable. See “Cartridge motor 1/ fuser cable removal” on page 4-62. 5Replace the EP drive assembly. See “Electrophotographic (EP) drive assembly removal” on page 4-82. Does the error clear?Problem resolved. Replace the system board. See “System board removal” on page 4-153. Step Questions / actions Yes No Pin 6 Pin 12 Pin 7
2-98Service Manual 5026 Go Back Previous Next 920.05—POST (power-on self test) printhead motor not connected error service check Step Questions / actions Yes No 11. Turn the printer off. 2. Remove the rear frame cover. See “Rear frame cover removal” on page 4-33. 3. Reseat the cables in connector JMIRR1 (A). Does the error clear?Problem resolved. Go to step 2. 2Check the cables in connector JMIRR1 for pinch points and any other damage to the cables or connectors. Is the cable damaged?Replace the printhead. See “Printhead removal, installation, and adjustment” on page 4-135.Go to step 3. 3Measure the resistance across fuse F6 (A) on the system board. Is the fuse blown?Replace the system board. See “System board removal” on page 4-153.Go to step 4. 41. Perform the printhead verification to check whether the new printhead solves the problem. See “Printhead verification” on page 3-35. 2. Select PRINTHEAD TESTS, and press Select(). 3. Select Mirror Motor Test, and press Select (). Did the mirror motor pass the test?Replace the printhead. See “Printhead removal, installation, and adjustment” on page 4-135.Replace the system board. See “System board removal” on page 4-153. 1JSB1JBIN1 JFAN1JFUSER1 JBOR1JHVPS1 JMIRR1JBLW1 JCVR1 JLVPS2 JCARTP1 JCARTS1 JCARTS2 JCARTP2 JDVR1 JTPS1 JOPT1 JFDS1 JINT1 JFDPCK1JTRAY1JSEC1 JDX1 JT12J5 JDIMM1JOPP1 JT1 JUSB1 JBOOT1 JFMUSB1 J49 JTWF1 JTDBUG1 1111 11 1 11 1 1 1 1 1 1 1 1 1 11 1 1111 JTLBT1 JPH1 F5F6F7 F9 F10F12F13F141 1J1011 A 1JSB1JBIN1 JFAN1JFUSER1 JBOR1JHVPS1 JMIRR1JBLW1 JCVR1 JLVPS2 JCARTP1 JCARTS1 JCARTS2 JCARTP2 JDVR1 JTPS1 JOPT1 JFDS1 JINT1 JFDPCK1JTRAY1JSEC1 JDX1 JT12J5 JDIMM1JOPP1 JT1 JUSB1 JBOOT1 JFMUSB1 J49 JTWF1 JTDBUG1 1111 11 1 11 1 1 1 1 1 1 1 1 1 11 1 1111 JTLBT1 JPH1 F5F6F7 F9 F10F12F13F141 1J1011 A
Diagnostic information2-99 5026 Go Back Previous Next 920.07—POST (power-on self test) error service check Step Questions / actions Yes No 1Turn the printer off, and then remove the rear frame cover. See “Rear frame cover removal” on page 4-33. Reseat the cable in connector JTRAY1. Does the error clear?Problem resolved. Go to step 2. 2Check the cable in connector JTRAY1 for pinch points and the cable or connector for any other damage. Is the cable damaged?Replace the paper pick mechanism. See “Paper pick mechanism assembly removal” on page 4-127. Go to step 3. 3POR the printer. Place a voltmeter between JTRAY1, pin 4, and ground (pin 1). Does the meter read 5 V dc?Go to step 4. Replace the system board. See “System board removal” on page 4-153. 1JSB1JBIN1 JFAN1JFUSER1 JFUSER1 JBOR1JHVPS1 JMIRR1JBLW1 JCVR1 JLVPS2 JCARTP1 JCARTS1 JCARTS2 JCARTP2 JDVR1 JTPS1 JOPT1 JOPT1 JFDS1 JINT1 JFDPCK1JTRAY1JSEC1 JDX1 JT12J5 JDIMM1JOPP1 JT1 JUSB1 JBOOT1 JFMUSB1 J49 JTWF1 JTDBUG1 1111 11 1 11 1 1 1 1 1 1 1 1 1 11 1 1111 JTLBT1 JPH1 F5F6F7 F9 F10F12F13F141 1J1011 A Pin 3 Pin 1 (ground)
2-100Service Manual 5026 Go Back Previous Next 41. Disconnect the cable in JTRAY1. 2. Connect the cable from the new paper pick mechanism. 3. Bring the printer up in Diagnostic menu (turn off the printer, press and hold and . and turn on the printer). 4. Select SENSOR TESTS, and press Select(). 5. Select Dynamic Sensors, and press Select(). 6. Select Narrow Media, and press Select(). 7. Activate the narrow media sensor. Did the narrow media sensor change from Closed to Open?Remove the paper pick mechanism. See “Paper pick mechanism assembly removal” on page 4-127.Replace the system board. See “System board removal” on page 4-153. Step Questions / actions Yes No
Diagnostic information2-101 5026 Go Back Previous Next 920.09—POST (power-on self test)—Four toner sensors not connected error service check Step Questions / actions Yes No 1Turn the printer off, and then remove the rear frame cover. See “Rear frame cover removal” on page 4-33. Reseat the cable in connector JHVPS1 (A). Does the error clear?Problem resolved. Go to step 2. 2Check the HVPS cable in connector JHVPS1 for pinch points and any other damage to the cable or connector. Is the cable damaged?Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal” on page 4-110. Go to step 3. 3Remove the left cover. See “Left cover removal” on page 4-21. Check the HVPS cable for correct connection to the HVPS board, pinch points for the cable, or any other damage. Is the cable damaged?Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal” on page 4-110.Go to step 4. 4Replace the HVPS board. See “High-voltage power supply (HVPS) removal” on page 4-108. Does the error clear?Problem resolved. Replace the system board. See “System board removal” on page 4-153. 1JSB1JBIN1 JFAN1JFUSER1 JBOR1JHVPS1 JMIRR1JBLW1 JCVR1 JCVR1 JLVPS2 JCARTP1 JCARTS1 JCARTS2 JCARTP2 JDVR1 JTPS1 JOPT1 JFDS1 JINT1 JFDPCK1JTRAY1JSEC1 JDX1 JT12J5 JDIMM1JOPP1 JT1 JUSB1 JBOOT1 JFMUSB1 J49 JTWF1 JTDBUG1 1111 11 1 11 1 1 1 1 1 1 1 1 1 11 1 1111 JTLBT1 JPH1 F5F6F7 F9 F10F12F13F141 1J1011 A
2-102Service Manual 5026 Go Back Previous Next 920.10—POST—Three toner sensors not connected error service check 920.11—POST (power-on self test)—Two toner sensors not connected error service check Step Questions / actions Yes No 1Remove the left cover. See “Left cover removal” on page 4-21. Check all the toner level sensor cables connected to the rear of the HVPS. Are any of the cables damaged?If only one or two of the toner level sensor are damaged: • Disconnect the sensor(s). • Go to step 6. If three toner level sensors are damaged, replace the damaged sensors. See “Toner level sensor removal” on page 4-160.Go to step 2. 2Reconnect the HVPS cable. Disconnect one of the toner level sensors and POR the printer. Does the 920.10 error occur again?• Then this sensor is one of the three bad sensors’ • Continue disconnecting the toner level sensors until three sensors are disconnected and the 920.10 error occurs. • Replace the toner level sensors that are disconnected. See “Toner level sensor removal” on page 4-160. Repeat this step for the other toner level sensors until the 920.10. Step Questions / actions Yes No 1Remove the left cover. See “Left cover removal” on page 4-21. Check all the toner level sensor cables connected to the rear of the HVPS. Are any of the cables damaged?If only one of the toner level sensor is damaged: • Disconnect the sensor. • Go to step 6.’ If two toner level sensors are damaged, replace the damaged sensors. See “Toner level sensor removal” on page 4-160.Go to step 2.
Diagnostic information2-103 5026 Go Back Previous Next 2Reconnect the HVPS cable. Disconnect one of the toner level sensors and POR the printer. Does the 920.11 error occur again?• If the error recurrs, then this sensor is one of the bad sensors.’ • Continue disconnecting the toner level sensors until two sensors are disconnected and the 920.11 error occurs. • Replace the toner level sensors that are disconnected. See “Toner level sensor removal” on page 4-160. Repeat this step for the other toner level sensors until the 920.11. Step Questions / actions Yes No
2-104Service Manual 5026 Go Back Previous Next 920.12—POST (power-on self test)—One sensor not connected error service check Step Questions / actions Yes No 1Remove the left cover. See “Left cover removal” on page 4-21. Check all the toner level sensor cables connected to the rear of the HVPS. Are any of the cables damaged?Replace the damaged sensor. See “Toner level sensor removal” on page 4-160.Go to step 2. 2Disconnect the cable in the connector JHVPS1 from the system board and the HVPS. Check for the following continuity. Is continuity present?Go to step 3. Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal” on page 4-110 3Reconnect the HVPS cable. Disconnect one of the toner level sensors and POR the printer. Does the 920.12 error occur again?Replace the toner level sensor. See “Toner level sensor removal” on page 4-160. Repeat the step for the other toner level sensors. After all the sensors are tested without the 920.12 recurring, the problem is resolved. 1JSB1JBIN1 JFAN1JFUSER1 JBOR1JHVPS1 JMIRR1JBLW1 JCVR1 JLVPS2 JCARTP1 JCARTS1 JCARTS2 JCARTP2 JDVR1 JTPS1 JOPT1 JFDS1 JINT1 JFDPCK1JTRAY1JSEC1 JDX1 JT12J5 JDIMM1JOPP1 JT1 JUSB1 JBOOT1 JFMUSB1 J49 JTWF1 JTDBUG1 1111 11 1 11 1 1 1 1 1 1 1 1 1 11 1 1111 JTLBT1 JPH1 F5F6F7 F9 F10F12F13F141 1J1011 A