1. Hardware (CLX-3170,CLX3175 Series)

2. Agenda I.Outline II.Composition & Function III.Trouble shooting

3. Ⅰ.OutlineObjectives 1.Understanding the basic structures and function of Hardware 2.Checking & building ability to Trouble Shooting

4. System Configuration.Model CLX-3175(N) (3 in 1) CLX-3175FN (4 in 1) CLX-3175FW (4 in 1,w/ Wireless) CLX-3170FN (4 in 1) 2-Tone Gray Note ProcessorCHORUS3(SOC) SDRAM:.128MB(DDR2) Flash ROM Nor 8MB(OS) - Nor 8MB(OS) Serial 2MB(BU) Nor 8MB(OS) Serial 2MB(BU) Nor 8MB(OS) Serial 2MB(BU) EEPROM8KB(24C64) 32KB(24C256)8KB(24C64) CompatibilityGDI(SPL-color) Interfaces:. USB2.0, (LAN), USB Host2.0 USB2.0, LAN, USB Host2.0,FAX USB2.0, LAN, USB Host2.0, FAX, Wireless USB2.0, LAN, USB Host2.0, FAX Embedded N/W With MII User.I/F16*2 LCD Document Feeder -ADF(15 Sheet) Continuou s ADF Ⅱ. Composition & Function

5. Block Diagram of CLX-317x Series Reset IC Inlet & Power S/W Fuser Control +5V/ +24V SMPS AC 110V / 220V HVPS DEV Charger T1 T2 EXIT Sensor Chorus3 (412 PBGA) ARM926E JS (360MHz) 16KB I-cache 16KB D-cache DMA / INT. CTRL PLL DDRC ROMC (2CH NOR) UART*2 HPVC LSUC DMAC MOTORC IOC ADC/DAC SCAN I/F RTC/ TIMERS FUSER HOT, Neutr al DDR2 K4T51163 x2 (64M x 16bit) Serial Flash For Back-up 2MB FUSER_ON LSU MAIN PBA SYS_nRESET Flash memory (AM29LV640) 8MB EEPROM M24C08 8K B (32KB) +5V +24V +24VF Cover S/W +24V +24VF +24VF +5V_LSU Waste Toner Sensor 1, 2 +24VF DEVE Clutch CRUM SCL,SDA +24VF ITB_Clutch ITB_Tension Clutch Charger Regi_Clutch +24VF Pickup_Clutch +24VF T2 Clutch +24VF Fuser Clutch +24VF +5V_LSU +5V ISP 1761 D+,D-,VBUS BCM 5241KMLG MVPG3 1 +5V LD1117 +3.3V +1V +1.8V Paper Driver System BLDC 12MHz PTL & Eraser TD+,TD-,RD+,RD- +24VF nCOVER_OPEN A3983 A,/A,B,/B HT82V26 ADF I/F PBA FAN SPK+,SPK - RJ11 FAX PBA RTC 32.768KHz OPC Main Clock 12MHz Color CIS (COLOR 1200DPI) SCAN MOTOR Step 4-in-1 Only USB Host BLDC D+,D-,VBUS (4-in-1) W-LAN (reserved) USB Host SSCG MCLKVCLK OPE BAT FUSER_THER M1 nFUSER1_EN D+,D-,VBUS ADF Joint ADF MOTOR Step DET Sensor POS Sensor nINTERLOCK +24VF +5V_LSU +5V_LSU +24VF Ⅱ. Composition & Function

6. Connection Diagram of CLP-317x Series Main PBA (FR-4, 6 Layer) USB Device 4p/USB-B Con. 4p/USB-A Con. SMPS (Type II) HVPS (FR1, 1 Layer) 16p/Wire 26p/FFC LSU 16p/FFC Inlet / Switch 2p/Wire OPE PBA (FR1, 1 Layer) CIS 12p/FFC 8p/RJ45 Con. Ethernet ADF I/F PBA (FR4, 2 Layer) 20p/FFC ADF Motor Detect Sensor 12p/Wire 2p/Wire 3p/Wire 7p/Wire 3p/Wire 2p/Wire 3p/Wire 2p/Wire 3p/Wire CRUM Joint PBA 5p/Wire Exit-Sensor 3p/Wire Main-Fan 3p/Wire Waste-TX/RX 4p/Wire MHV / THV / Bias Direct Contact Crum Y Crum M Crum C Crum K I2C COVER OPEN (24V On/off) LIU PBA (FR4, 2 Layer ) 12p/Wire 2p/Wire 10p/Wire Regi_Sensor 3p/Wire SCAN Motor 4-in-1 Only ADF Joint PBA (FR1, 1 Layer) 4p/Wire W-LAN USB Host (FR4, 2 Layer) 6p/Wire with Shield 5p/Wire with Shield Position Sensor 12p/Wire 2p/Wire 8p/Wire (TEP/INTERLOCK) COVER OPEN (5V On/off) Temp Sensor 2p/Wire OPC FUSER CN15 CN14 CN3 CN4 CN31 CN28 CN9 CN32 CN1 CN33 CN30 CN10 CN12 CN17 CN16 CN13 CN26 CN19 CN24 CN20 CN22 CN23 CN18 4p/Wire CN29 CN8 CN7 CN27 CN5 Ⅱ. Composition & Function

7. H/W Configuration SMPS Main Board HVPS ADF Joint ADF I/F FAX OPEHOST Ⅱ. Composition & Function

8. Main General description  Main PBA employs Chorus3 as an ASIC, which is developed for LBP Printer A B C D E F G H I J K L Ⅱ. Composition & Function

9. Main General description NO.NAME ACPU(Chorus3) BDDR2 (64MB) x 2 CNOR FLASH(8MB) DEEPROM ESerial Flash(2MB) FISP1761(USB Controller) GPHY Chip HADC IA3983(Motor Driver) JMux KAudio Amp LSwitching Regulator Ⅱ. Composition & Function

10. Main B’D Configuration DDR2 SDRAM FLASH ROM USB Chip Phy Chip DATA(15:0) ADDR (31:1) DQ (15:0) DDR_SA (13:0) MII EEPROM I2C BUS Switching Regulator 3.3V 1.0V Electrical Part (HVPS & Sensors) Mechanical Part (Motor & Actuator) Engine Control I/O & PWM Port Switching Regulator Ⅱ. Composition & Function

11. Main B’D Configuration CPU : Chorus 3 (SoC) Memory : - RAM : DDR2 Default 128MB(64MB x 2) - ROM : 8MB - NVRAM : 8KB (32KB: Wireless model) Peripherals : - USB 2.0 - 10/100 Based N/W (MII Interface Phy Chip Used) I/O : - Digital I/O Port : Basic I/O, PWM : Motor & HVPS Control - UART : OPE, FAX,Debug - I 2 C : NVRAM & CRUM Interface - Analog I/O Port (ADC : Sensor Interface, DAC : LD Power Control) Ⅱ. Composition & Function

12. Chorus 3 Architecture CPU Core : ARM926EJS, 360Mhz (I-Cache : 16KB, D-Cache : 16KB) DDR SDRAM Controller : DDR1/2, 16-bit width, 166MHz ROM Controller : 2 channel NOR flash controller, 2 Banks ( 1 Bank Used) I/O Controller : 4-channels external I/O device, 2-channel DMA I/O DMA Controller : 3 Channel HPVC : 4 Channel Dual / Single Beam UART : 4 Channels (Debug 1 Channel used only) Interrupt : 4 dedicated external, 64 Internal TIMER : 6 System Timer (S/W use Only) Ⅱ. Composition & Function

13. Memory Interface ROM : - Nor Flash used (16MB) - Interface With Chorus 3 ROM Controller SDRAM : - Size : DDR2 Default 128MB - interface with Chorus 3 RANM Controller EEPROM : - Size : 8KB (32K: Wireless model) - Interface With Chorus 3 I2C Controller CRUM : - Size : 256Byte - Interface With Chorus 3 I2C Controller via Joint Crum B’D Ⅱ. Composition & Function

14. I/O Interface High Speed USB 2.0 (High speed 480Mbps / Full speed 12Mbps) N/W Embedded - Chorus M With MII Interface - Active LED(Yellow) / Link LED(Green) PWM - High Voltage Control With Duty - Main Motor Clock I2C Interface - NVRAM (system information + network information) - CRUM Ⅱ. Composition & Function

15. Power Flow SMPS - Type II stage 3 (standard type) - +24V : For use Mechanical Part (Motor & Actuator (Solenoid, Clutch)) - +5V : Logic, Analog, Sensor Ⅱ. Composition & Function Main B’D - Supply From SMPS +5V - Power Supply with two Switching Regulators (3.3V & 1.0V ) - Power Supply with One Linear Regulator (1.8V : Linear Regulator) - 3.3V : I/O Operating (Digital & Analog) - 1.0V : Chorus 3 Core Voltage HVPS - Supply From SMPS +24V - High Voltage Source for EP Condition is Controlled By PWM Pulse & I/O Signal

16. CRUM Interface SDA SCL NVRAM 24C64 MAIN BD Crum Joint BD TONER CRUM nCRUM TONER CRUM nCRUM TONER CRUM nCRUM TONER CRUM nCRUM TONER CART Ⅱ. Composition & Function

17. OP panel General description OP panel - 28 Key buttons - Animation LED - Buzzer - 16x2 Line LCD - CIS Home Sensing Ⅱ. Composition & Function

18. ADF I/F General description ADF I/F - Back-up Battery (CR2032) - ADF Motor Driving - Speaker Connection Ⅱ. Composition & Function

19. Fuse AC Fuse AC Fuse 24V Fuse 24V Fuse 5V Fuse 5V SMPS : INPUT : AC 110V or 220V OUTPUT : 24V, 5V Ⅱ. Composition & Function

20. HVPS T2 +1550V±3% -1300V±20% T1 +1000V±3% CHARGER -1000V±3% K C M Y BIAS AC +180V±3% BIAS DC -595V±3% Ⅱ. Composition & Function

21. Ⅲ. Troubleshooting Error Vertical Line and Band [Description ] 1. Straight thin black vertical line occurs in the printing. 2. Dark black vertical band occur in the printing. [Wrong Part] 1. LSU 2. Developer Unit [Check and Cause] 1. Damaged develop roller in the Developer. 2. Deformed Doctor-blade [Solution] 1. If causes 1 and 2 occur in the developer unit, replace the developer and try to print out. [Etc] Trouble & Solution

22. Error Dark Image or black [Description ] The printed image is dark. [Wrong Part] 1. HVPS [Check and Cause] 1. No charge voltage in the HVPS board. 2. There isn’t High Voltage Contact Spring between HVPS and OPC Unit. 3. No PWM signal for EP Condition Supplies from Main Board [Solution] 1. Replace the HVPS. 2. If High Voltage Contact Spring isn’t, Replace the Spring. 3. Replace the Main Board. Trouble & Solution Ⅲ. Troubleshooting

23. Error JAM 0, JAM 1 [Description ] 1. Paper is not exited from the cassette. 2. Jam-0 occurs if the paper feeds into the printer. [Wrong Part] 1. Sensor 2. Solenoid 3. Pick-up roller 4. Main Board [Check and Cause] 1. Check the Solenoid & feed-sensor by using EDC mode. 2. Check the surface of the roller-pickup for foreign matter. [Solution] 1. Replace the solenoid and/or feed-sensor. 2. Replace the roller-pick up. 3. Replace the Main Board. Trouble & Solution Ⅲ. Troubleshooting

24. Error Paper Empty [Description ] LCD displays “Tray Paper Empty” [Wrong Part] 1. Actuator 2. Sensor [Check and Cause] 1. Bending or deformation of the actuator of the paper sensor. 2. The function of the Main board is defective Perform. [Solution] 1. Replace the defective actuator. 2. Replace the Main board. Trouble & Solution Ⅲ. Troubleshooting

25. Error Defective motor operation [Description ] Main motor is not driving when printing, and Displaying “Main Motor Locked” [Wrong Part] 1. Main Board 2. Motor Harness [Check and Cause] 1. Motor harness or sub PCB may be defective. 2. Check the Operating Signal and Clock from Main Board. 3. Check the +24V switch. [Solution] 1. Check the motor harness, replace it, if defective. 2. Check 24V in the SMPS, replace it, if defective. 3. Check the Cover Switch, replace it, if defective. 3. Replace the Main Board, if necessary. Trouble & Solution Ⅲ. Troubleshooting

26. Error No Power [Description ] When system power is turned on, The LCD on the operator panel does not come on and motor is not driving. [Wrong Part] 1. SMPS. 2. Operating panel & Main Board. [Check and Cause] 1. Check if the power input and SMPS output are normal. 2. Check the interfaces of operating panel if the character on LCD does not appear after normal warming up. [Solution] 1. Replace the SMPS. 2. Replace the control board. 3. Replace the operating panel. Trouble & Solution Ⅲ. Troubleshooting

27. Error Vertical Line Getting Curved [Description ] When printing, vertical line gets curved. [Wrong Part] 1. LSU 2. Main Board [Check and Cause] 1. LSU P-Motor is unstable. 2. Contact of the GND of Roller-Exit is unstable. 3. If the supply of +24V is unstable in the Main Control board linking with LSU. [Solution] 1. Replace LSU. 2. Replace the Main board. 3. Replace the GND of Roller-Exit. Trouble & Solution Ⅲ. Troubleshooting

28. Error LSU Error [Description ] The printing is stop in the fad status, With LSU Error SM Message [Wrong Part] 1. LSU 2. Main Board 3. Flat Cable Harness [Check and Cause] 1. LSU P_Motor or Hsync Signal is defective. 2. Main Controller LSU Part defect. 3. Check the connection between Main Board and LSU. [Solution] 1. Check the Flat Cable Harness, Replace it if necessary. 2. Replace LSU. 3. Replace the Main Board. Trouble & Solution Ⅲ. Troubleshooting

29. Error Scanner Locked [Description ] CIS is not driving when copying or warming up, and Displaying “Scanner Locked” [Wrong Part] 1. CIS Home Sensor. 2. SMPS. 3. Main Board. 3. CIS belt. [Check and Cause] 1. Check the CIS home sensor. 2. Check the main motor Driver(A3983) IC. 3. Check the supply of +24V 4. Check the CIS Belt [Solution] 1. Replace the CIS home sensor. 2. Replace the Main Board. 3. Replace the SMPS. 4. Assemble the CIS belt correctly. Trouble & Solution Ⅲ. Troubleshooting

30. Error FAX Error [Description ] FAX TX or RX Error. [Wrong Part] 1. FAX Board. 2. Main Board. [Check and Cause] 1. Check the connection between FAX board and Main board. 2. Check the connection of TEL Line. [Solution] 1. Replace the FAX board. 2. Connect the TEL Line correctly. Trouble & Solution Ⅲ. Troubleshooting