Lexmark C736 Service Manual
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Connector locations5-3 5026 Go Back Previous Next System board listing See “System board diagram” on page 5-2. ConnectorPin # SignalPin # Signal J5 Internal Service Port (ISP) 1Ground 2 USBOUT+ 3 USBOUT- 4Ground 5 USBIN+ 6 USBIN- 7Ground 8A0 9 RESET 10 +5 V dc 11 I2C_DAT 12 +5 V dc 13 I2C_CLK 14 +5 V dc J10 Network 1 D_PHY_TX+ 2 D_PHY_TX- 3 D_PHY_RD+ 4 V_ANA2.5 5 V_ANA2.5 6 D_PHY_RD 7NC 8 V_BOBSMITH 9 +2.5V_PHY_I 10 PHYLED0 11 +2.5V_PHY_I 12 PHYLED1 10A PHYLED0 11A +2.5V_PHY_I 12A PHYLED1 9A +2.5V_PHY_I J49 Fan 1+5 V dc 2 +5 V dc or Ground 3 FANSENSE JBIN1 Output bin sensor 1 VS12_BF 2 S_BIN_FB 3Ground
5-4Service Manual 5026 Go Back Previous Next JBLW1 Cartridge blower1 S_BLOW_FG 2 V18_BLOW_RTN 3 BLT_BLOW_FB JBOOT1 0 1 +3.3 V dc 2 +3.3 V dc or Ground JBOR1 COD BCD motor 1 V24_BOR- 2 V24_BOR+ JCARTP1 Cartridge 1/fuser motors 1 V48_CART1_WIND_W 2 V48_CART1_WIND_V 3 V48_CART1_WIND_U 4 V24_FUSER2_W 5 V24_FUSER2_V 6 V24_FUSER2_U JCARTP2 Cartridge 2/cartridge 3 motors 1 V48_CART3_WIND_W 2 V48_CART3_WIND_V 3 V48_CART3_WIND_U 4 V48_CART2_WIND_W 5 V48_CART2_WIND_V 6 V48_CART2_WIND_U JCARTS1 cartridge 1/fuser motors 1 TG_CART1_FG2 TG_CART1_HALL_U 3 +5V_SW4 TG_CART1_HALL_V 5Ground6 TG_CART1_HALL_W 7Ground8 GD_FUSER_HALL_W 9 +5V_SW10 GD_FUSER_HALL_V 11 GD_FUSER_FG12 GD_FUSER_HALL_U JCARTS2 Cartridge 2/cartridge 3 motors 1 TG_CART3_FG2 TG_CART3_HALL_U 3 +5V_SW4 TG_CART3_HALL_V 5Ground6 TG_CART3_HALL_W 7Ground8 TG_CART2_HALL_W 9 +5V_SW10 TG_CART2_HALL_V 11 TG_CART2_FG12 TG_CART2_HALL_U System board listing (continued) See “System board diagram” on page 5-2. ConnectorPin # SignalPin # Signal
Connector locations5-5 5026 Go Back Previous Next JCFT1 Functional tester I/F1 CFT1 2 CFT2 3Ground 4 CFT3 5 CFT4 6Ground 7 CFT5 8 CFT6 JCONF1 0 H Model only 1 PLL_CFG1 2 +1.8 V dc 3 PLL_CFG2 JCVR1 Cover open switch (25v) 1 V48_25V_CVR 2 V48_25VD_CVR JDVR1 TBM stepper/door cam driver 1 +25VE2 +25VE 3 +5V_FUSED4Ground 5 +3.3V_ENG6 GD_TBM_DIR 7 GD_TBM_RESET8 GD_TBM_ENABLE 9 GD_TBM_REF_CLK10 Ground 11 GD_TBM_PWM12 GD_TBM_STEP_MODE 13 GD_DOOR_CAM_PWM14 GD_DOOR_CAM_DIR 15 GD_CAM_CURR_SNS16 Ground 17 TBM_STEP_SNS18 Ground JDX1 Duplex / MFP BDC motor drive 1 VS12_DUP_ENC_LED 2 S_DUP_MPF_ENC 3Ground 4 V24_DUP_MPF_M- 5 V24_DUP_MPF_M+ JFAN1 System fan 1Ground 2 V18_FAN_MTR 3 S_FAN_FG 4NC JFDPCK1 Paper Feed/Waste Toner Motor and Tray 1 Pick 1 VS12_FEED_ENC2 V24_PICK_M+ 3 S_FEED_ENC4 V24_PICK_M- 5Ground6Ground 7 V24_FEED_MTR-8 S_T1PK_ENC 9 V24_FEED_MTR+10 VS12_5V_ENC System board listing (continued) See “System board diagram” on page 5-2. ConnectorPin # SignalPin # Signal
5-6Service Manual 5026 Go Back Previous Next JFDS1 Feed thru sensor1 VS12_FDS 2 S_FDS_FB 3Ground JFMUSB1 Front panel USB port 1Ground 2 USB_DM1 3 USB_DP1 4NC 5Ground JFUSER1 Belt, exit, bubble sensors 1 S_FSR_BLT2_SNS2 GD_FSR_BLT1_RTN 3 VS_BUB_LED4 S_FSR_BUB_SNSD 5Ground6Ground 7 S_FSR_EXIT_SNSD8 VS_EXIT_LED 9 S_FSR_BLT1_SNS10 GD_FSR_BLT1_RTN JHVPS1 High-voltage power supply 1Ground2 +25VD 3 C-DEVPWM4 M-DEVPWM 5 Y-DEVPWM6 K-DEVPWM 7Ground8 +5V_SW 9TONER_C10 TONER_M 11 TONER_Y12 TONER_K 13 GD_HV_CHRG_PWM14 V_SNS 15 GD_HV_XFR_PWM_C16 C_SRVO_OUT 17 GD_HV_XFR_PWM_M18 M_SRVO_OUT 19 GD_HV_XFR_PWM_Y20 Y_SRVO_OUT 21 PC_SNS22 +5V_HVPS 23 GD_HV_XFR_PWM_K24 K_SRVO_OUT 25 XFER_BOOST26 GD_HVPS_ID JINT1 Interlock switch (5v) 1 VS24_JINT 2Ground 3 VS24_INT JLVPS2 Low-voltage power supply 1+5 V dc2+5 V dc 3+5 V dc4 GD_LVPS_0X 5 +25 V dc6 +25 V dc 7Ground8Ground 9Ground10 Ground 11 V15_LVPS_FSR_RLY12 GD_LVPS_HRON System board listing (continued) See “System board diagram” on page 5-2. ConnectorPin # SignalPin # Signal
Connector locations5-7 5026 Go Back Previous Next JMIRR1 Mirror motor1MM_REFR 2 TG_MM_LOCK 3 TG_MM_START 4Ground 5 +25VC JOPP1 Operator panel (12C) 1I2C_DATA 2 V12_PANEL+5V 3 I2C_CLK 4Ground 5 TG_OP_IRQ- 6 +3.3 V dc 7Ground JOPT1 Option port 1 +25VE2Ground 3 S_OPT_RXR4Ground 5 S_INPUT_FDT6 VS24_OPT_5V 7Ground8 S_OPT_TXR System board listing (continued) See “System board diagram” on page 5-2. ConnectorPin # SignalPin # Signal
5-8Service Manual 5026 Go Back Previous Next JPH1 Printhead1 VDO_SYNC_C 2 VDO_PHR_OK 3 VDO_SYNC_B 4 VDO_LENA 5 TG_VDO_SHADE_D 6 VS12_+3.3VPH 7 TG_VDO_SHADE_C 8 VS12_JPH1 9 TG_VDO_SHADE_B 10 VS12_JPH1 11 TG_VDO_SHADE_A 12 Ground 13 D_VDO_D2+ 14 D_VDO_D2- 15 Ground 16 D_VDO_D+ 17 D_VDO_D- 18 Ground 19 D_VDO_C2+ 20 D_VDO_C2- 21 Ground 22 D_VDO_C+ 23 D_VDO_C- 24 Ground 25 D_VDO_B2+ 26 D_VDO_B3- 27 Ground 28 D_VDO_B+ 29 D_VDO_B- 30 Ground 31 D_VDO_A2+ 32 D_VDO_A2- 33 Ground 34 D_VDO_A+ System board listing (continued) See “System board diagram” on page 5-2. ConnectorPin # SignalPin # Signal
Connector locations5-9 5026 Go Back Previous Next JPH1 Printhead (continued)35 D_VDO_A- 36 Ground 37 I2C_CLK_PH 38 TG_VDO_LADJ_CD 39 I2C_DATA_PH 40 TG_VDO_LADJ_AB JSB1 Cartridge SB 1 S_SB_Y 2Ground 3 S_SB_C 4Ground 5 S_SB_M 6Ground 7 S_SB_K 8Ground JSEC1 Security jumper 1V2 2Ground 3Ground JT1 Test Connector 1Ground 2Ground JT12 Manual Reset 1 MAX811_MR_ 2Ground JTDBUG1 Debug 1 GD_DEBUG 2Ground JTLBT1 LB trace port 1Ground 2TG_WF_RXD 3TG_WF_TXD 4 +5 V dc or Ground JTPS1 Toner Patch Sensor 1 V12_LED_ON2 VS12_3_3V 3 GD_TPS_SNS4 GD_TPS_PWM1 5 GD_TPS_SNS_RTN6 GD_TPS_TNR_SNS 7Ground8 I2C_CLK_TB 9 I2C_DATA_TB10 GD_TPS_THERM_SNS JTRAY1 Tray 1 input, NMT sensors 1Ground 2 S_TRAY_INPUT 3 VS12_TRAY_INPT_LED 4 VS12_TRAY+5V_NMT 5 S_TRAY_NMT 6Ground System board listing (continued) See “System board diagram” on page 5-2. ConnectorPin # SignalPin # Signal
5-10Service Manual 5026 Go Back Previous Next JTWF1 Winflex serial port (engine)1Ground 2 TG_RXD1 3TG_TXD1 4 +5 V dc or Ground JUSB1 USB device port 1 USB_DEV_VBUS_R 2 USB_DEVD- 3 USB_DEVD+ 4Ground G1 Ground G2 Ground System board listing (continued) See “System board diagram” on page 5-2. ConnectorPin # SignalPin # Signal
Preventive maintenance6-1 5026 Go Back Previous Next 6. Preventive maintenance This chapter describes procedures for printer preventive maintenance. Follow these recommendations to help prevent problems and maintain optimum performance. Safety inspection guide The purpose of this inspection guide is to aid you in identifying unsafe conditions. If any unsafe conditions exist, find out how serious the hazard could be and if you can continue before you correct the hazard. Check the following items: •Damaged, missing, or altered parts, especially in the area of the On/Off switch and the power supply •Damaged, missing, or altered covers, especially in the area of the top cover and the power supply cover •Possible safety exposure from any non-Lexmark attachments Lubrication specifications Lubricate only when parts are replaced or as needed, not on a scheduled basis. Use of lubricants other than those specified can cause premature failure. Some unauthorized lubricants may chemically attack polycarbonate parts. Use IBM no. 10 oil, P/N 1280443 (Approved equivalents: Mobil DTE27, Shell Tellus 100, Fuchs Renolin MR30), IBM no. 23 grease (Approved equivalent Shell Darina 1), and grease, P/N 99A0394 to lubricate appropriate areas. Use Nyogel type 774 to lubricate the Fuser Drive Assembly and Nyogel 744 to lubricate the ITU and Cartridge Drive assemblies. Maintaining the printer Periodically, certain tasks are required to maintain optimum print quality. Cleaning the exterior of the printer 1.Make sure that the printer is turned off and unplugged from the outlet. 2.Remove paper from the standard exit bin. 3.Dampen a clean, lint-free cloth with water. Warning: Potential Damage: Do not use household cleaners or detergents, as they may damage the finish of the printer. 4.Wipe only the outside of the printer, making sure to include the standard exit bin. Warning: Potential Damage: Using a damp cloth to clean the interior may cause damage to your printer. 5.Make sure the paper support and standard exit bin are dry before beginning a new print job. CAUTION SHOCK HAZARD: To avoid the risk of electric shock when cleaning the exterior of the printer, unplug the power cord from the outlet, and disconnect all cables to the printer before proceeding.
6-2Service Manual 5026 Go Back Previous Next Cleaning the printhead lenses Clean the printhead lenses when you encounter print quality problems. 1.Open the front access door. Warning: Potential Damage: To avoid overexposing the photoconductor units, do not leave the front door open for more than 10 minutes. 2.Remove all four toner cartridges. Do not remove the photoconductor units for this procedure. 3.Locate the four printhead lenses. 4.Clean the lenses using a can of compressed air. Warning: Potential Damage: Do not touch the printhead lenses. 5.Reinstall the four toner cartridges. 6.Close the front door. Moving the printer Follow these guidelines to avoid personal injury or printer damage: •Always use at least two people to lift the printer. •Always turn off the printer using the power switch before moving it. •Disconnect all cords and cables from the printer before moving it. •Remove the printer from the options before moving it. 1 CAUTION POTENTIAL INJURY: The printer weight is greater than 54 lbs (24.5kg) and requires two or more trained personnel to lift it safely.