Sharp AM-900 Service Manual

Also see for AM 900 - Digital Office Laser Copier: Online guide Instructions

Contents

SERVICE MANUALAM-900UNo. 00ZAM900U/SMEDIGITAL MULTIFUNCTIONAL SYSTEMAM-900MODELSHARP CORPORATIONCONTENTSParts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones formaintaining the safety and performance of the set.This document has been published to be usedfor after sales service only.The contents are subject to change without notice.CHAPTER 1. GENERAL DESCRIPTION[1] Specifications ................................................. 1-1[2] Operation panel.............................................. 1-2[3] Transmittable documents ............................... 1-3[4] Installation ...................................................... 1-4CHAPTER 2. ADJUSTMENTS[1] Adjustments ................................................... 2-1[2] Diagnostics and service soft switches............ 2-7[3] Troubleshooting ........................................... 2-30[4] Error code table............................................ 2-31CHAPTER 3. MECHANICAL DESCRIPTION[1] Mechanical description................................... 3-1[2] Disassembly and assembly procedures....... 3-18CHAPTER 4. DIADRAMS[1] Block diagram ................................................ 4-1[2] Wiring diagram ............................................... 4-2[3] Point-to-point diagram.................................... 4-3CHAPTER 5. CIRCUIT DESCRIPTION[1] Circuit description........................................... 5-1[2] Circuit description of control PWB.................. 5-1[3] Circuit description of LIU PWB..................... 5-19[4] Circuit description of power supplyPWB ............................................................5-21[5] Circuit description of CIS unit ......................5-22[6] Circuit description of operation panelPWB ............................................................5-23[7] Data flow chart.............................................5-24[8] Troubleshooting ...........................................5-25CHAPTER 6. CIRCUIT SCHEMATICS AND PARTSLAYOUT[1] Control PWB circuit .......................................6-1[2] LIU PWB circuit ...........................................6-14[3] Power Supply PWB circuit...........................6-17[4] High Voltage PWB circuit.............................6-19[5] Operation Panel PWB circuit .......................6-22CHAPTER 7. OPERATION FLOWCHART[1] Protocol .........................................................7-1[2] Power on sequence.......................................7-2CHAPTER 8. OTHER[1] Service tools ..................................................8-1[2] Rewriting version up the FLASH ROM ..........8-2Parts GuideMODEL SELECTION CODE DESTINATIONAM-900 U U.S.A./Canada