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GENERAL SPECIFICATIONS
3.
Safety Information
In order to prevent accidents from occurring while maintenance is being carried out, all warnings and precautions should
be strictly observed while working. Never attempt any kind of dangerous work when servicing this machine.
The precautions noted below are only a few of the situations which could foreseeably occur during maintenance
operations. Please make sure every safety precaution is observed while working.
3-1. Power Supply
In order to prevent electrical shock, burns, damage to the equipment, and other problems, always make sure the power
supply is turned off and the power supply cable has been unplugged before maintenance work is carried out.
If the power must be left on in order to measure voltage or for other reasons, make sure sufficient precautions are taken
to prevent electrical shock, and follow the procedures noted in this manual.
3-2. Drive Parts
Inspection of drive section parts such as sprockets and gears should be carried out using a hand crank.
DANGER: Never inspect these parts while the equipment is in operation!
3-3. Safety Devices
Thorough consideration should be given to safety devices designed to prevent accidents (fuses, interlock switches, etc.)
as well as those handled by the user in the course of operating the equipment (covers, panels, etc.), in order to make sure
they fulfill their function as safety equipment.
DANGER: In order to prevent exposure to the laser beam contained in the printer, the following precautions must always
be strictly observed.
Exposure to the laser beam can result in blindness.
•
Never open cover (ROS assembly) that has the label of figure 1-2.
•
When disassembling and adjusting the equipment, always make sure the power supply has been turned
off first.
•
This equipment is provided with a two-stage safety switch function, so that it can be operated even with
the covers removed, by pressing the interlock switch. When using this method of operation, never short
the other switch at the same time (the second switch is pressed when the actuator at the back of the EPX
toner cartridge attachment section is pressed).
•
When servicing the optical system of the printer, be careful not to place screwdrivers or other reflective
objects in the path of the laser beam.
Be sure to take off accessories, such as watches and rings, before working on the printer. A reflected beam,
though invisible, can permanently damage your eyes.
Because the laser beam is invisible, be especially careful when servicing the optical system.
Summary of Contents for LS-5 SERIES
Page 1: ...LASER PRINTER LS 5 SERIES TECHNICAL MANUAL SECOND EDITION ...
Page 4: ... 2 GENERAL SPECIFICATIONS ...
Page 6: ... 2 GENERAL SPECIFICATIONS ...
Page 14: ... 10 THEORY OF OPERATION ...
Page 20: ... 16 THEORY OF OPERATION Figure 2 5 Cassette Feed ...
Page 22: ... 18 THEORY OF OPERATION Figure 2 6 Paper Transportation ...
Page 25: ... 21 THEORY OF OPERATION Figure 2 8 Drive Figure 2 9 ROS Assy Figure 2 10 EPX Toner Cartridge ...
Page 28: ...REPLACEMENT AND ADJUSTMENTS OF PARTS 24 ...
Page 56: ... 52 MAINTENANCE GUIDE ...
Page 84: ... 80 TROUBLESHOOTING ...
Page 136: ... 2 GENERAL SPECIFICATIONS ...
Page 140: ... 136 2 Cassette Feed 2 1 Disassembly Drawing ...
Page 142: ... 138 3 Paper Transportation 3 1 Disassembly Drawing ...
Page 144: ... 140 4 Fusing Paper Exit 4 1 Disassembly Drawing ...
Page 146: ... 142 5 Drive Photographics 5 1 Disassembly Drawing ...
Page 148: ... 144 6 Electrical 6 1 Disassembly Drawing ...
Page 151: ... 147 7 Optional Feeder Unit 250 7 1 Disassembly Drawing ...
Page 153: ... 149 8 Optional Feeder Unit 500 8 1 Disassembly Drawing ...
Page 158: ... 154 10 Main Logic Board LS 5EX TT 10 1 Circuit Diagram Title BLOCK DIAGRAM ...
Page 159: ... 155 Main Logic Board LS 5EX TT 1 10 Title CPU BLOCK 1 ...
Page 160: ... 156 Main Logic Board LS 5EX TT 2 10 Title G A BLOCK 2 ...
Page 161: ... 157 Main Logic Board LS 5EX TT 3 10 Title RAM BLOCK 3 ...
Page 162: ... 158 Main Logic Board LS 5EX TT 4 10 4Title ROM BLOCK ...
Page 163: ... 159 Main Logic Board LS 5EX TT 5 10 Title ENGINE I F BLOCK 5 ...
Page 164: ... 160 Main Logic Board LS 5EX TT 6 10 6Title FONT CART CN BLOCK ...
Page 165: ... 161 Main Logic Board LS 5EX TT 7 10 Title CENT I F BLOCK 7 ...
Page 166: ... 162 Main Logic Board LS 5EX TT 8 10 Title SERIAL I F BLOCK 8 ...
Page 167: ... 163 Main Logic Board LS 5EX TT 9 10 9Title EXROM BLOCK ...
Page 168: ... 164 Main Logic Board LS 5EX TT 10 10 10 Title POWER BLOCK ...
Page 169: ... 165 10 2 Component Layout Parts Side ...
Page 170: ... 166 10 2 Component Layout Solder Side ...
Page 174: ... 170 11 Main Logic Board LS 5 11 1 Circuit Diagram Title BLOCK DIAGRAM ...
Page 175: ... 171 Main Logic Board LS 5 1 7 Title CPU BLOCK 1 ...
Page 176: ... 172 Main Logic Board LS 5 2 7 Title G A BLOCK 2 ...
Page 177: ... 173 Main Logic Board LS 5 3 7 Title RAM BLOCK 3 ...
Page 178: ... 174 Main Logic Board LS 5 4 7 4Title ROM BLOCK ...
Page 179: ... 175 Main Logic Board LS 5 5 7 Title CARTRIDGE BLOCK 5 ...
Page 180: ... 176 Main Logic Board LS 5 6 7 6Title PARALLEL SERIAL IF BLOCK ...
Page 181: ... 177 Main Logic Board LS 5 7 7 Title PANEL EET ENGINE IF BLOCK 7 ...
Page 182: ... 178 11 2 Component Layout Parts Side ...
Page 183: ... 179 11 2 Component Layout Solder Side ...
Page 186: ... 182 12 ROM Board MS 12 1 Circuit Diagram Title BLOCK DIAGRAM ...
Page 187: ... 183 ROM Board MS 1 2 Title CONNECTOR DECODE BLOCK 1 ...
Page 188: ... 184 ROM Board MS 2 2 Title ROM BLOCK 2 ...
Page 189: ... 185 12 2 Component Layout Parts side Solder side ...
Page 191: ... 187 13 RAM Board 13 1 Circuit Diagram Title RAM BOARD ...
Page 192: ... 188 13 2 Component Layout Parts side ...
Page 194: ... 190 14 RAM Module 1MB 14 1 Circuit Diagram ...
Page 196: ... 192 15 RAM Module 2MB 15 1 Circuit Diagram ...
Page 198: ... 194 16 Font Cartridge 16 1 Circuit Diagram ...
Page 199: ... 195 16 2 Component Layout Parts side ...
Page 203: ... 2 GENERAL SPECIFICATIONS ...