User Manual
Page 32
... Panel group. The LQ-2070 printer driver is now installed on your computer. Setting Up the Printer 1-15 then click OK. 5. The EPSON printer driver disk that helps you need to install the printer driver for instructions. Install the driver for Windows 3.1 users Follow these steps to change the default printer or port assignment, use the LQ-2070 as the Printer Model and click Continue...
... Panel group. The LQ-2070 printer driver is now installed on your computer. Setting Up the Printer 1-15 then click OK. 5. The EPSON printer driver disk that helps you need to install the printer driver for instructions. Install the driver for Windows 3.1 users Follow these steps to change the default printer or port assignment, use the LQ-2070 as the Printer Model and click Continue...
User Manual
Page 38
...+ LQ-2550 LQ-2500 LQ-800/1000 LQ-1500 See your DOS program's documentation for EPSON ESC/P2 printers. If the LQ-2070 is not included in the list, contact your software manufacturer to properly align your computer instead of printers to select from the list below. to make setting changes from your printout. Also, you to install the printer driver...
...+ LQ-2550 LQ-2500 LQ-800/1000 LQ-1500 See your DOS program's documentation for EPSON ESC/P2 printers. If the LQ-2070 is not included in the list, contact your software manufacturer to properly align your computer instead of printers to select from the list below. to make setting changes from your printout. Also, you to install the printer driver...
Service Manual
Page 45
... I I 1. /- Head Driva TRANSISTOR IC 5 PS RAM ICI 1,14 PF Motor Driver TEA3718SDP 1 1 ~n D .H / \ IC12 CR Motor Driver SLA7024M IC 8 'CN2 for the main board and printer mechanism. IC52 OP-amp n 1 1 \ r\ rA / DBI Diode Bridge Ti Trensformaer... 1/51 Switching Regulator TL494CN Figure 1-14 C166 PSB/PSE Board Assembly 1-36 Rev.A C!!!!!o0 ; Both boards consist of a TMP96C041AF CPU, an E05B13 gate array, a program/CG ROM, a PS-IWM, an EEPROM, etc. Product Description LQ-2070...
... I I 1. /- Head Driva TRANSISTOR IC 5 PS RAM ICI 1,14 PF Motor Driver TEA3718SDP 1 1 ~n D .H / \ IC12 CR Motor Driver SLA7024M IC 8 'CN2 for the main board and printer mechanism. IC52 OP-amp n 1 1 \ r\ rA / DBI Diode Bridge Ti Trensformaer... 1/51 Switching Regulator TL494CN Figure 1-14 C166 PSB/PSE Board Assembly 1-36 Rev.A C!!!!!o0 ; Both boards consist of a TMP96C041AF CPU, an E05B13 gate array, a program/CG ROM, a PS-IWM, an EEPROM, etc. Product Description LQ-2070...
Service Manual
Page 49
...a corresponding coil. When the driving voltage stops energizing the coil, the magnetic force from the control circuit to the printhead driver circuit, is converted to the proper printhead driving voltage, which is converted to an electric signal and fed back to its.... The printhead is an 24-pin (12 pins × 2) head for impact dot printing. LQ-2070 Service Manual Operating Principles 2.1 PRINTER MECHANISM OPERATION This section describes the printer mechanism and explains how it prints a dot. 4. The actuating plate returns to the control circuit. Head driving coils move in ...
...a corresponding coil. When the driving voltage stops energizing the coil, the magnetic force from the control circuit to the printhead driver circuit, is converted to the proper printhead driving voltage, which is converted to an electric signal and fed back to its.... The printhead is an 24-pin (12 pins × 2) head for impact dot printing. LQ-2070 Service Manual Operating Principles 2.1 PRINTER MECHANISM OPERATION This section describes the printer mechanism and explains how it prints a dot. 4. The actuating plate returns to the control circuit. Head driving coils move in ...
Service Manual
Page 65
Control Panel LEDs Printhead Driver Primary Circuit Secondary Circuit +5V Switching Regurator +5V Constant ... and PSE boards function the same, except for a difference in the figure above, when AC power enters the printer from the 35 VDC line. The secondary smoothing circuit produces a stepped down to produce direct voltage. The +5 ... to 132 VAC 198 to drive the printer control circuits and drive mechanism. The voltage is stepped down +35 VDC voltage. LQ-2070 Service Manual Operating Principles 2.2 POWER SUPPLY OPERATION The printer can be powered by the various control ...
Control Panel LEDs Printhead Driver Primary Circuit Secondary Circuit +5V Switching Regurator +5V Constant ... and PSE boards function the same, except for a difference in the figure above, when AC power enters the printer from the 35 VDC line. The secondary smoothing circuit produces a stepped down to produce direct voltage. The +5 ... to 132 VAC 198 to drive the printer control circuits and drive mechanism. The voltage is stepped down +35 VDC voltage. LQ-2070 Service Manual Operating Principles 2.2 POWER SUPPLY OPERATION The printer can be powered by the various control ...
Service Manual
Page 74
...by CPU ports 9 (P70), 10 (P71), 11 (P72), and 12 (P73). Operation Principles LQ-2070 Servcie Manual 2.3.5 PF Motor Driver Circuit The figure below shows the EEPROM control circuit. The figure below shows the PF motor driver circuit. 63 PFI1A P FI 0A 62 PFFASEA 32 Gate Array IC2 66 PFHOLD IC11 9 7 ... drive currents are output via ports 32 (PHASEA) and ports 129 (PHASEB) to TEA3718SDP form, and then sends that stores information even if the printer power is non-volatile memory that phase data via port 62 (PFI0A), port 63 (PFI1A), port 64 (PFI0B), port 65 (PFI1B). Port 11...
...by CPU ports 9 (P70), 10 (P71), 11 (P72), and 12 (P73). Operation Principles LQ-2070 Servcie Manual 2.3.5 PF Motor Driver Circuit The figure below shows the EEPROM control circuit. The figure below shows the PF motor driver circuit. 63 PFI1A P FI 0A 62 PFFASEA 32 Gate Array IC2 66 PFHOLD IC11 9 7 ... drive currents are output via ports 32 (PHASEA) and ports 129 (PHASEB) to TEA3718SDP form, and then sends that stores information even if the printer power is non-volatile memory that phase data via port 62 (PFI0A), port 63 (PFI1A), port 64 (PFI0B), port 65 (PFI1B). Port 11...
Service Manual
Page 75
...standard voltage that paper has been loaded when the photo diode rays are cut off by the sensor plate, which is included in this printer. LQ-2070 Service Manual Operating Principles 2.3.7 Sensor Circuits The CPU detects conditions of the following sensors: home position (HP) sensor, release sensors 1... Gate Array R1 6 7 Figure 2-38 Sensor Circuit +5V HP Sensor PG Sensor Release Sensor 2 Release Sensor 1 Two types of the head driver signal. Additionally, as mentioned on sequence. Release sensors 1 and 2, the PG sensors, and the front PE sensor are monitored to set the pulse...
...standard voltage that paper has been loaded when the photo diode rays are cut off by the sensor plate, which is included in this printer. LQ-2070 Service Manual Operating Principles 2.3.7 Sensor Circuits The CPU detects conditions of the following sensors: home position (HP) sensor, release sensors 1... Gate Array R1 6 7 Figure 2-38 Sensor Circuit +5V HP Sensor PG Sensor Release Sensor 2 Release Sensor 1 Two types of the head driver signal. Additionally, as mentioned on sequence. Release sensors 1 and 2, the PG sensors, and the front PE sensor are monitored to set the pulse...
Service Manual
Page 131
...supply YES with computer. YES NO Is the YES probelm corrected? Is it OK ? FFC. LQ-2070 Service Manual 4. YES Replace the printhead.. END NO Install the correct printer driver. Connect the cable correctly. YES NO Replace the FFC. YES Is the YES probelm corrected?... C186 MAIN baord. NO Dose the resistence NO of NO Reinstall the END characters Ribbon mask. YES Are printer NO settings correct? Are the correct printer drivers installed ? Is the problem corrected ? Is it OK? YES NO Is the YES problem corrected ? Replace...
...supply YES with computer. YES NO Is the YES probelm corrected? Is it OK ? FFC. LQ-2070 Service Manual 4. YES Replace the printhead.. END NO Install the correct printer driver. Connect the cable correctly. YES NO Replace the FFC. YES Is the YES probelm corrected?... C186 MAIN baord. NO Dose the resistence NO of NO Reinstall the END characters Ribbon mask. YES Are printer NO settings correct? Are the correct printer drivers installed ? Is the problem corrected ? Is it OK? YES NO Is the YES problem corrected ? Replace...