– 128 –
TROUBLESHOOTING
Print sample
Symptom
Step
Check
Measure (if abnormal)
Initial check
P-12. Smudging
Smudging of the print
(This refers to printing in which there are smudges or grime in the white sections
of the printed area.)
Check parts with different specifications for problems with usage, defective
installation, breakage, deformation, and adhesion of grime or foreign matter.
•
Main parts to be checked:
(1) EPX toner cartridge, (2) HVPS, (3) Earth plate assy, (4) MCU PCB
(5) Harness assy HVPS, (6) LVPS assy, (7) ROS assy
1
(Faulty HVPS CR (DC))
Is the output of the HVPS CR (DC) normal?
2
(Faulty HVPS DB)
Is the output of the HVPS DB normal?
3
(Faulty EPX toner cartridge)
Does the problem stop occurring when the EPX toner cartridge
is replaced with a new one?
To section 3-18
To section 3-1
Replace EPX toner cartridge.
Содержание LS-5 SERIES
Страница 1: ...LASER PRINTER LS 5 SERIES TECHNICAL MANUAL SECOND EDITION ...
Страница 4: ... 2 GENERAL SPECIFICATIONS ...
Страница 6: ... 2 GENERAL SPECIFICATIONS ...
Страница 14: ... 10 THEORY OF OPERATION ...
Страница 20: ... 16 THEORY OF OPERATION Figure 2 5 Cassette Feed ...
Страница 22: ... 18 THEORY OF OPERATION Figure 2 6 Paper Transportation ...
Страница 25: ... 21 THEORY OF OPERATION Figure 2 8 Drive Figure 2 9 ROS Assy Figure 2 10 EPX Toner Cartridge ...
Страница 28: ...REPLACEMENT AND ADJUSTMENTS OF PARTS 24 ...
Страница 56: ... 52 MAINTENANCE GUIDE ...
Страница 84: ... 80 TROUBLESHOOTING ...
Страница 136: ... 2 GENERAL SPECIFICATIONS ...
Страница 140: ... 136 2 Cassette Feed 2 1 Disassembly Drawing ...
Страница 142: ... 138 3 Paper Transportation 3 1 Disassembly Drawing ...
Страница 144: ... 140 4 Fusing Paper Exit 4 1 Disassembly Drawing ...
Страница 146: ... 142 5 Drive Photographics 5 1 Disassembly Drawing ...
Страница 148: ... 144 6 Electrical 6 1 Disassembly Drawing ...
Страница 151: ... 147 7 Optional Feeder Unit 250 7 1 Disassembly Drawing ...
Страница 153: ... 149 8 Optional Feeder Unit 500 8 1 Disassembly Drawing ...
Страница 158: ... 154 10 Main Logic Board LS 5EX TT 10 1 Circuit Diagram Title BLOCK DIAGRAM ...
Страница 159: ... 155 Main Logic Board LS 5EX TT 1 10 Title CPU BLOCK 1 ...
Страница 160: ... 156 Main Logic Board LS 5EX TT 2 10 Title G A BLOCK 2 ...
Страница 161: ... 157 Main Logic Board LS 5EX TT 3 10 Title RAM BLOCK 3 ...
Страница 162: ... 158 Main Logic Board LS 5EX TT 4 10 4Title ROM BLOCK ...
Страница 163: ... 159 Main Logic Board LS 5EX TT 5 10 Title ENGINE I F BLOCK 5 ...
Страница 164: ... 160 Main Logic Board LS 5EX TT 6 10 6Title FONT CART CN BLOCK ...
Страница 165: ... 161 Main Logic Board LS 5EX TT 7 10 Title CENT I F BLOCK 7 ...
Страница 166: ... 162 Main Logic Board LS 5EX TT 8 10 Title SERIAL I F BLOCK 8 ...
Страница 167: ... 163 Main Logic Board LS 5EX TT 9 10 9Title EXROM BLOCK ...
Страница 168: ... 164 Main Logic Board LS 5EX TT 10 10 10 Title POWER BLOCK ...
Страница 169: ... 165 10 2 Component Layout Parts Side ...
Страница 170: ... 166 10 2 Component Layout Solder Side ...
Страница 174: ... 170 11 Main Logic Board LS 5 11 1 Circuit Diagram Title BLOCK DIAGRAM ...
Страница 175: ... 171 Main Logic Board LS 5 1 7 Title CPU BLOCK 1 ...
Страница 176: ... 172 Main Logic Board LS 5 2 7 Title G A BLOCK 2 ...
Страница 177: ... 173 Main Logic Board LS 5 3 7 Title RAM BLOCK 3 ...
Страница 178: ... 174 Main Logic Board LS 5 4 7 4Title ROM BLOCK ...
Страница 179: ... 175 Main Logic Board LS 5 5 7 Title CARTRIDGE BLOCK 5 ...
Страница 180: ... 176 Main Logic Board LS 5 6 7 6Title PARALLEL SERIAL IF BLOCK ...
Страница 181: ... 177 Main Logic Board LS 5 7 7 Title PANEL EET ENGINE IF BLOCK 7 ...
Страница 182: ... 178 11 2 Component Layout Parts Side ...
Страница 183: ... 179 11 2 Component Layout Solder Side ...
Страница 186: ... 182 12 ROM Board MS 12 1 Circuit Diagram Title BLOCK DIAGRAM ...
Страница 187: ... 183 ROM Board MS 1 2 Title CONNECTOR DECODE BLOCK 1 ...
Страница 188: ... 184 ROM Board MS 2 2 Title ROM BLOCK 2 ...
Страница 189: ... 185 12 2 Component Layout Parts side Solder side ...
Страница 191: ... 187 13 RAM Board 13 1 Circuit Diagram Title RAM BOARD ...
Страница 192: ... 188 13 2 Component Layout Parts side ...
Страница 194: ... 190 14 RAM Module 1MB 14 1 Circuit Diagram ...
Страница 196: ... 192 15 RAM Module 2MB 15 1 Circuit Diagram ...
Страница 198: ... 194 16 Font Cartridge 16 1 Circuit Diagram ...
Страница 199: ... 195 16 2 Component Layout Parts side ...
Страница 203: ... 2 GENERAL SPECIFICATIONS ...