Toshiba e-studio2809a - Page 21

© 2013-2017 TOSHIBA TEC CORPORATION All rights reserved e-STUDIO2006/2306/2506/2007/2307/2507/2303A/2303AM/2803AM/2309A/2809A
CONTENTS
7
8.3.9 Paper feeding system related service call ....................................................... 8-45
8.3.10 Scanning system related service call............................................................... 8-47
8.3.11 Process related service call ............................................................................. 8-49
8.3.12 Laser optical unit related service call ............................................................... 8-50
8.3.13 Fuser unit related service call .......................................................................... 8-51
8.3.14 Circuit related service call................................................................................ 8-59
8.3.15 Communication related service call ................................................................. 8-61
8.3.16 Other service call ............................................................................................. 8-61
8.3.17 Error in E-mail / Scanning Function ................................................................. 8-63
8.4 Troubleshooting for the Image ........................................................................................ 8-67
8.4.1 Abnormality of image density / Gray balance .................................................. 8-67
8.4.2 Background fogging......................................................................................... 8-68
8.4.3 Moire/lack of sharpness................................................................................... 8-69
8.4.4 Toner offset...................................................................................................... 8-70
8.4.5 Blurred image .................................................................................................. 8-71
8.4.6 Poor fusing....................................................................................................... 8-72
8.4.7 Blank copy ....................................................................................................... 8-73
8.4.8 Solid copy ........................................................................................................ 8-74
8.4.9 White banding or white void (in the feeding direction) ..................................... 8-75
8.4.10 White banding (at right angle with the feeding direction)................................. 8-77
8.4.11 Skew (inclined image)...................................................................................... 8-78
8.4.12 Black banding (in the feeding direction)........................................................... 8-79
8.4.13 Black banding (at right angle with the feeding direction) ................................. 8-80
8.4.14 White spots ...................................................................................................... 8-81
8.4.15 Poor image transfer ......................................................................................... 8-82
8.4.16 Uneven image density ..................................................................................... 8-83
8.4.17 Faded image (low density, abnormal gray balance) ........................................ 8-84
8.4.18 Image dislocation in feeding direction.............................................................. 8-85
8.4.19 Jittering image ................................................................................................. 8-86
8.4.20 Poor cleaning................................................................................................... 8-87
8.4.21 Uneven light distribution .................................................................................. 8-88
8.4.22 Blotched image ................................................................................................ 8-89
8.4.23 Black streaks on image leading edge during scanning.................................... 8-90
8.5 Other Errors .................................................................................................................... 8-91
8.5.1 When “SET FUSER UNIT” is displayed........................................................... 8-91
8.5.2 Countermeasure to "BIOS MODE" displayed on Control Panel ...................... 8-91
8.5.3 Precautions for image missing width on the paper trailing edge
at enlargement copying ................................................................................... 8-92
8.5.4 Precautions for incorrect Operation of Automatic Original Size Detection
<20H/23H/25H, 23HA/28HA>.......................................................................... 8-92
8.5.5 When the error code "F014" is displayed <23HA only>................................... 8-94
8.5.6 When "FAX Error" is displayed ........................................................................ 8-94
9. REPLACEMENT OF PC BOARDS............................................................................... 9-1
9.1 Disassembly and Replacement of PC Boards <20L/23L/25L/20H/23H/25H> .................. 9-1
9.1.1 Main board (MAIN) ............................................................................................ 9-1
9.1.2 LVPS.................................................................................................................. 9-2
9.1.3 HVPS ................................................................................................................. 9-3
9.2 Disassembly and Replacement of PC Boards <23LA/23LM/28LM/23HA/28HA>............. 9-4
9.2.1 Main board (MAIN) ............................................................................................ 9-4
9.2.2 LVPS.................................................................................................................. 9-5
9.2.3 HVPS ................................................................................................................. 9-6
9.3 Precautions, Procedures and Settings for Replacing MAIN Board ................................... 9-7
9.4 Precautions, Procedures and Settings for Replacing the Flash Memory........................ 9-10
10. REMOTE SERVICE <20H/23H/25H, 23HA/28HA> .................................................... 10-1
10.1 Service Notification ......................................................................................................... 10-1
10.1.1 Outline ............................................................................................................. 10-1
10.1.2 Setting.............................................................................................................. 10-2