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File name AL840 Service Man SM.pdf

SERVICE MANUAL CODE: 00ZAL840//F1E DIGITAL COPIER MODEL AL-800/840 CONTENTS [ 1 ] SYSTEM CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 [ 2 ] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 [ 3 ] CONSUMABLE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 [ 4 ] SET UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 [ 5 ] EXTERNAL VIEW AND INTERNAL STRUCTURE . . . . . . . . . . 5-1 [ 6 ] MACHINE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 [ 7 ] ADJUSTMENTS, SETTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 [ 8 ] SIMULATION (Test Command) USER PROGRAM . . . . . . . . 8-1 [ 9 ] DISASSEMBLY, ASSEMBLY, MAINTENANCE . . . . . . . . . . . . 9-1 [10] TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 [11] SIGNAL LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1 CIRCUIT DIAGRAM Parts marked with "!" is important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set. SHARP CORPORATION This document has been published to be used for after sales service only. The contents are subject to change without notice. At the production line, the output power of the scanner unit is adjusted to 0.33 MILL I-WA TT PL U S 2 0 P C TS a nd is maintained constant by the operation of the Automatic Power Control (APC). Even if the APC circuit fails in operation for some reason, the maximum output power will only be 15 MILLI-WATT 0.1 MICROSEC. giving an acceptable emission level of 42 MICRO-WATT which is still-less than the limit of CLASS-1 laser product. Caution The fusing unit is hot. Exercise care when inspecting it. Do not switch the printer rapidly on and off. After turning the printer off, wait 10 to 15 seconds before turning it back on. Printer power must be turned off before installing any supplies. Laserstrahl RADIATION WHEN OPEN CAUTION INVISIBLE LASER EXPOSURE TO BEAM. AND INTERLOCKS DEFEATED AVOID UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEЦFFNET UND SICHVORSICHT ERHEITSVERRIEGELUNG ЬBERBRЬCKT. NICHT DEM STRAHL AUSSETZEN. VED ERE ER UDE AF FUNKTION. UDSAETTEL E FOR STRЕLNING. ADVARSEL USYNLIG LASERSTRЕLNINGUNDGЕЕBNING. NЕRSSIKKERHEDSBRYDUSYNLIG LASERSTRЕLING NЕR DEKSEL ЕPNES OG SIKKERHEDSLЕS BRYTES. ADVERSEL UNNGЕ EKSPONERING FOR STRЕLEN. NДR DENNA DEL ДR ЦPPNAD OCH VARNING OSYNLIG LASERSTRЕLNING FARLIG. BETRAKTA EJ STRЕLEN. SPДRRAR ДR URKOPPLADE. STRЕLEN ДR AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA VARO! NДKYMДTЦNTД LASERSДTEILYLLE. ДLД KATSO SДTEESEEN. VAROITUS! LAITTEEN KДYTTДMINEN MUULLA KUIN TДSSД KДYTTЦOHJEESSA MAINITULLA TAVALLA SAATTAA ALTISTAA KДYTTДJДN TURVALLISUUSLUOKAN 1 YLITTДVДLLE NДKYMДTTЦMДLLE LASERSДTEILYLLE. VARNING - OM APPARATEN ANVДNDS PЕ ANNAT SДTT ДN I DENNA BRUKSANVISNING SPECIFICER