Service Manual
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OPERATING PRINCIPLES Describes the theory of electrical and mechanical operations of Epson-approv lubricants and adhesives required for the experienced repair technicians, and attention the preceding page. CHAPTER 5. CHAPTER 2.... PREFACE This manual describes basic functions, theory of the product. ADJUSTMENTS Provides Epson-approved methods for reference: • EEPROM Address Map • Connector Pin Assignments • C272 Main Board Component Layout • C272 Main Board Circuit Diagram PRODUCT DESCRIPTIONS Provides a general overview and specifications of electrical and ...
OPERATING PRINCIPLES Describes the theory of electrical and mechanical operations of Epson-approv lubricants and adhesives required for the experienced repair technicians, and attention the preceding page. CHAPTER 5. CHAPTER 2.... PREFACE This manual describes basic functions, theory of the product. ADJUSTMENTS Provides Epson-approved methods for reference: • EEPROM Address Map • Connector Pin Assignments • C272 Main Board Component Layout • C272 Main Board Circuit Diagram PRODUCT DESCRIPTIONS Provides a general overview and specifications of electrical and ...
Service Manual
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... (Reverse Channel 18 Operation Instruction 19 Control Panel ...19 Bi-directional Adjustment Function 19 EEPROM Initialization 20 Main Components 21 C272MAIN Board 22 Printer Mechanism 23 Operating Principles Control Circuit 25 Overview of the Control Circuit Operation 25 System Reset Circuit 26 ...Error Codes with Indicators and Buzzer 40 Unit Level Troubleshooting 41 Repairing the C165 PSB/PSE Board 41 Repairing the C272MAIN Board 41 Repairing the Printer Mechanism 43 Maintenance Appendix EEPROM Address Map 47 Connector Summary 51 Component Layout 53 Circuit Diagram 55
... (Reverse Channel 18 Operation Instruction 19 Control Panel ...19 Bi-directional Adjustment Function 19 EEPROM Initialization 20 Main Components 21 C272MAIN Board 22 Printer Mechanism 23 Operating Principles Control Circuit 25 Overview of the Control Circuit Operation 25 System Reset Circuit 26 ...Error Codes with Indicators and Buzzer 40 Unit Level Troubleshooting 41 Repairing the C165 PSB/PSE Board 41 Repairing the C272MAIN Board 41 Repairing the Printer Mechanism 43 Maintenance Appendix EEPROM Address Map 47 Connector Summary 51 Component Layout 53 Circuit Diagram 55
Service Manual
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LQ-2180 1.4 Main Components The main components for LQ-2180 Main Components 21 Main Components for the LQ-2180 are designed for easy disassembly and repair work. † C272MAIN Board † C165 PSB/PSE Board † C165 PNL Board † Printer Mechanism † Housing (upper and lower cases) Revision A Product Description Figure 1-3. They are as follows.
LQ-2180 1.4 Main Components The main components for LQ-2180 Main Components 21 Main Components for the LQ-2180 are designed for easy disassembly and repair work. † C272MAIN Board † C165 PSB/PSE Board † C165 PNL Board † Printer Mechanism † Housing (upper and lower cases) Revision A Product Description Figure 1-3. They are as follows.
Service Manual
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C272MAIN Board Product Description Main Components 22 Revision A Note the C272MAIN Board has the following 4 versions; 1) Standard version, 2) NLSP version, 3) Korean version, and 4) Thai version. C N 17 CN3 CN4... M ( 8 M b it) N o t M o u n te d IC 6 C G R O M ( 8 M b it) ( S ta n d a r d /N L S P /T h a i) IC 5 IC 1 C P U E E P R O M TM P 96C 141 IC 1 0 IC 6 (K o re a n ) Figure 1-4. LQ-2180 1.4.1 C272MAIN Board The C272MAIN Board is composed of the CPU (TMP96C141), gate array (E05B42), program ROM that integrates the CG, EEPROM, and 24 transistors used to drive the printhead...
C272MAIN Board Product Description Main Components 22 Revision A Note the C272MAIN Board has the following 4 versions; 1) Standard version, 2) NLSP version, 3) Korean version, and 4) Thai version. C N 17 CN3 CN4... M ( 8 M b it) N o t M o u n te d IC 6 C G R O M ( 8 M b it) ( S ta n d a r d /N L S P /T h a i) IC 5 IC 1 C P U E E P R O M TM P 96C 141 IC 1 0 IC 6 (K o re a n ) Figure 1-4. LQ-2180 1.4.1 C272MAIN Board The C272MAIN Board is composed of the CPU (TMP96C141), gate array (E05B42), program ROM that integrates the CG, EEPROM, and 24 transistors used to drive the printhead...
Service Manual
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... status to the CPU and the gate array: † The printer is turned on or off the operation of the C272 MAIN board. Functions of the Main Board IC Name Location Function CPU IC4 Detects conditions of the printer. Table 2-1. Reset Circuit Operating Principles Control Circuit 26 ROM IC10 ...table lists the each function of the main components of each IC to receive data IC8 • Data Extension • CPU working area CG-ROM IC7 Contains font data. LQ-2180 The following functions: • Buffer used to prevent the printer from falling into abnormal status caused by...
... status to the CPU and the gate array: † The printer is turned on or off the operation of the C272 MAIN board. Functions of the Main Board IC Name Location Function CPU IC4 Detects conditions of the printer. Table 2-1. Reset Circuit Operating Principles Control Circuit 26 ROM IC10 ...table lists the each function of the main components of each IC to receive data IC8 • Data Extension • CPU working area CG-ROM IC7 Contains font data. LQ-2180 The following functions: • Buffer used to prevent the printer from falling into abnormal status caused by...
Service Manual
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... one stored in the middle row for the Draft Copy Mode and the LQ Mode, the rest of the Bi-D Adjustment 3. Select "1. C A U T IO N „ The value "0" shown in the screen shown in Figure 4-5 is reset. However, if the main board has been replaced, the value in Figure 4-6) are aligned. (If no adjustment is...
... one stored in the middle row for the Draft Copy Mode and the LQ Mode, the rest of the Bi-D Adjustment 3. Select "1. C A U T IO N „ The value "0" shown in the screen shown in Figure 4-5 is reset. However, if the main board has been replaced, the value in Figure 4-6) are aligned. (If no adjustment is...
Service Manual
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... :P r e v io u s U P /D o w n :S e le c t E N T E R :D e te r m in a photo sensor lowers with age. When this adjustment when the main board or Top PE Sensor has been replaced. Generally, light level emitted from the photo diode in e Figure 4-7. If this reason, the printer renews the current paper remaining level by . L Q -2 1 8 0 S E R V IC E P R O G R A M V e r s io n 1 .0 < R e s e t...TPE Reset" in EEPROM when the printer power is turned off the printer. 4.1.3 TPE Level Reset Make this... printer is turned on or paper is set. 1. The screen below appears. FF is written in the main ...
... :P r e v io u s U P /D o w n :S e le c t E N T E R :D e te r m in a photo sensor lowers with age. When this adjustment when the main board or Top PE Sensor has been replaced. Generally, light level emitted from the photo diode in e Figure 4-7. If this reason, the printer renews the current paper remaining level by . L Q -2 1 8 0 S E R V IC E P R O G R A M V e r s io n 1 .0 < R e s e t...TPE Reset" in EEPROM when the printer power is turned off the printer. 4.1.3 TPE Level Reset Make this... printer is turned on or paper is set. 1. The screen below appears. FF is written in the main ...
Service Manual
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...information is necessary only for each component of IC10. main board). LQ-2180 5.3 Unit Level Troubleshooting The information for this section is the same as for the LQ-2170 except for a change in this section C165 MAIN Board → 272MAIN Board Point: Flowchart 2-1 CN12 → CN12 ... PROM (IC10) is turned on. Troubleshooting Unit Level Troubleshooting 41 Repairing the C272MAIN Board (1/3) Problem Cause Checkpoint Solution The printer does Reset IC2 is not operate at pin replace the main 1 of the VCC signal (CH1: IC2 pin 3) and VOUT signal (CH2:...
...information is necessary only for each component of IC10. main board). LQ-2180 5.3 Unit Level Troubleshooting The information for this section is the same as for the LQ-2170 except for a change in this section C165 MAIN Board → 272MAIN Board Point: Flowchart 2-1 CN12 → CN12 ... PROM (IC10) is turned on. Troubleshooting Unit Level Troubleshooting 41 Repairing the C272MAIN Board (1/3) Problem Cause Checkpoint Solution The printer does Reset IC2 is not operate at pin replace the main 1 of the VCC signal (CH1: IC2 pin 3) and VOUT signal (CH2:...
Service Manual
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...(Q4 Q27). • Check the voltage waveform at pins 68, 69, 70, and 71 of IC12. A particular dot fails to print., IC3 is defective or one of the head drive transistors is not correct, replace the IC12. •...replace the main board). Check the output signal at pin HD1 - No data is printed., IC3 is defective., If this signal is defective. Troubleshooting Repairing the C272MAIN Board 42 IC3 is not output, replace IC3. HD24 of IC4. The printer does CRU1 ...pins 1, 2, 3, and 4 of IC3. • Check the voltage waveform (CH2) for each transistor. LQ-2180 Table 5-3.
...(Q4 Q27). • Check the voltage waveform at pins 68, 69, 70, and 71 of IC12. A particular dot fails to print., IC3 is defective or one of the head drive transistors is not correct, replace the IC12. •...replace the main board). Check the output signal at pin HD1 - No data is printed., IC3 is defective., If this signal is defective. Troubleshooting Repairing the C272MAIN Board 42 IC3 is not output, replace IC3. HD24 of IC4. The printer does CRU1 ...pins 1, 2, 3, and 4 of IC3. • Check the voltage waveform (CH2) for each transistor. LQ-2180 Table 5-3.
Service Manual
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... Map This chapter provides EEPROM Address Map for LQ-2180 and component layouts and circuit diagram for front tractor 1CH Font selection 1 to 22x360 (by 1/360 inch), 0000H 0000H 0000H: 11inch (the default) (11 inch) (... to 8.5 0000H 0000H mm + 1 inch, by 1/360 inch), 0000H 0000H 0000H: 11inch (the default) (11 inch) (11 inch) 1AH, 1BH Bottom margin for the C272 Main Board.
... Map This chapter provides EEPROM Address Map for LQ-2180 and component layouts and circuit diagram for front tractor 1CH Font selection 1 to 22x360 (by 1/360 inch), 0000H 0000H 0000H: 11inch (the default) (11 inch) (... to 8.5 0000H 0000H mm + 1 inch, by 1/360 inch), 0000H 0000H 0000H: 11inch (the default) (11 inch) (11 inch) 1AH, 1BH Bottom margin for the C272 Main Board.
Service Manual
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LQ-2180 7.2 Connector Summary The following figure shows how primary components are connected. F ro n t S e n s o r H P S ensor P W S ensor P r in te r M e c h a n is m P F M o to r C R M o to r P G S ensor R e le a s e L e v e r P o s itio n S e n s o r P E - C272 Main Board Connection Board Connector Function Pins CN1 Parallel interface 36 CN2 Type B interface 36 CN3 C165 PSB/PSE board assembly 12 CN4 HP sensor 3 CN5 Rear PE sensor 3 CN6 Front PE...
LQ-2180 7.2 Connector Summary The following figure shows how primary components are connected. F ro n t S e n s o r H P S ensor P W S ensor P r in te r M e c h a n is m P F M o to r C R M o to r P G S ensor R e le a s e L e v e r P o s itio n S e n s o r P E - C272 Main Board Connection Board Connector Function Pins CN1 Parallel interface 36 CN2 Type B interface 36 CN3 C165 PSB/PSE board assembly 12 CN4 HP sensor 3 CN5 Rear PE sensor 3 CN6 Front PE...
Service Manual
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... A NOTE: The table below provides information of the connector that vary from C165 Main Board used in LQ-2170. Connector CN14 CN12 CN16 CN17 LQ-2180 (C272MAIN) Function CSF Release lever position Release lever position Fan Pin alignment 1: +35V 2: +5V 3: HOLD 4: +35V 5: -A 6: B 7: GND 8: GND 9: A 10:-B 1: RELEASE 1 2: GND 1: RELEASE 2 2: GND 1: PE 2: GND ...
... A NOTE: The table below provides information of the connector that vary from C165 Main Board used in LQ-2170. Connector CN14 CN12 CN16 CN17 LQ-2180 (C272MAIN) Function CSF Release lever position Release lever position Fan Pin alignment 1: +35V 2: +5V 3: HOLD 4: +35V 5: -A 6: B 7: GND 8: GND 9: A 10:-B 1: RELEASE 1 2: GND 1: RELEASE 2 2: GND 1: PE 2: GND ...