Toshiba e-STUDIO 2050C e-STUDIO 2550C e-STUDIO 2051C e-STUDIO 2551C Service Manual (Version 09, May 2015)

Version 09,  May 2015

Service Manual Toshiba e-STUDIO 2050C e-STUDIO 2550C e-STUDIO 2051C e-STUDIO 2551C;
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your Toshiba e-STUDIO copier.
You can print, zoom or read any diagram, picture or page from this Service Manual. Every chapter on this manual is fully detailed and contain all the  simulation codes, trouble codes, maintenance procedures, reset procedures, diagnose procedures of Toshiba e-STUDIO 2050C e-STUDIO 2550C e-STUDIO 2051C e-STUDIO 2551C photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:

1. FEATURE
1.1 Main Feature of this equipment

2. SPECIFICATIONS/ACCESSORIES/OPTIONS/SUPPLIES
2.1 Specifications
2.1.1 General
2.1.2 Copy
2.1.3 Print
2.1.4 Scan
2.1.5 Internet Fax
2.1.6 SSD/HDD Memory Map
2.1.7 Network Fax (Option)
2.2 Accessories
2.3 System List
2.3.1 20ppm/25ppm
2.3.2 LL20ppm/LL25ppm
2.4 Supplies

3. OUTLINE OF THE MACHINE
3.1 Sectional View
3.1.1 Front side
3.1.2 Rear side
3.2 Electric Parts Layout
3.3 Symbols and Functions of Various Components
3.3.1 Motors, fans
3.3.2 Sensors and switches
3.3.3 Electromagnetic spring clutches
3.3.4 Solenoids
3.3.5 PC boards
3.3.6 Lamps and heaters
3.3.7 Thermistors, thermostats
3.3.8 Others
3.4 Copy Process
3.5 Comparison with e-STUDIO2040C/2540C/3040C/3540C/4540
3.6 General Operation
3.6.1 Overview of Operation
3.6.2 Description of Operation
3.6.3 Detection of Abnormality
3.6.4 Hibernation function
3.7 Control Panel
3.7.1 General Description
3.7.2 Description of Operation
3.8 Scanner
3.8.1 General Description
3.8.2 Construction
3.8.3 Functions
3.8.4 Description of Operation
3.8.5 Process of detection of original size
3.9 Writing Section
3.9.1 General Description
3.9.2 General description of LED printer head
3.9.3 LED printer head lifting mechanism
3.9.4 Driving Section
3.10 Paper Feeding System
3.10.1 General Descriptions
3.10.2 Composition
3.10.3 Functions
3.10.4 Description of Operation
3.11 Process Unit Related Section
3.11.1 General description
3.11.2 Composition
3.11.3 Functions
3.11.4 Drum driving sleep mode
3.12 Developer Unit
3.12.1 General Description
3.12.2 Composition
3.12.3 Functions
3.12.4 Functions of the toner cartridge PC board (CTRG)
3.12.5 Waste toner box
3.13 Transfer Unit
3.13.1 General Descriptions
3.13.2 Composition
3.14 Image Quality Control
3.14.1 General Description
3.15 Fuser unit / Paper exit section
3.15.1 General Description
3.15.2 Composition
3.15.3 Electric Circuit Description
3.16 Automatic Duplexing Unit (ADU)
3.16.1 General Description
3.16.2 Composition
3.16.3 Drive of ADU
3.16.4 Description of Operations
3.17 Power Supply Unit
3.17.1 General description
3.17.2 Functions
3.17.3 Operation of DC Output Circuits
3.17.4 Output Channel
3.17.5 Fuse

4. DISASSEMBLY AND REPLACEMENT
4.1 Covers
4.1.1 Front cover
4.1.2 Left cover
4.1.3 Receiving tray
4.1.4 Tray rear cover
4.1.5 Left top cover
4.1.6 Left rear cover
4.1.7 Right top cover
4.1.8 Right front cover
4.1.9 Right rear cover
4.1.10 Front top cover
4.1.11 Front right cover
4.1.12 Rear top cover
4.1.13 Rear cover
4.1.14 Front cover switch (SW1)
4.1.15 Front cover interlock switch (SW2)
4.2 Control Panel
4.2.1 Control panel unit
4.2.2 KEY board
4.2.3 DSP board
4.2.4 Touch panel
4.3 Scanner Unit
4.3.1 Original glass
4.3.2 Lens cover
4.3.3 Automatic original detection sensor-1, -2 (S24, S25)
4.3.4 Lens unit/CCD driving PC board
4.3.5 Carriage home position sensor (S23)
4.3.6 Exposure lamp (EXP)
4.3.7 Scan motor (M1)
4.3.8 Platen sensor (S21, S22)
4.3.9 Carriage-1
4.3.10 Carriage wire, carriage-2
4.3.11 Scanner damp heater
4.4 LED Unit
4.4.1 LED Tray
4.4.2 Discharge LED
4.4.3 LED printer head
4.4.4 LED spacer
4.5 Paper Feeding System
4.5.1 Bypass unit
4.5.2 Bypass feed roller
4.5.3 Bypass separation pad
4.5.4 Paper width detection PC board (S17)
4.5.5 Bypass feed sensor (S16)
4.5.6 Bypass paper feed clutch (CLT4)
4.5.7 Drawer feed roller
4.5.8 Drawer separation pad
4.5.9 1st drawer empty sensor (S5)
4.5.10 1st drawer size detection switch-1, -2 (SW6, SW7)
4.5.11 1st drawer detection switch (SW8)
4.5.12 Side cover switch (SW5)
4.5.13 Registration sensor (S19), feed sensor (S20)
4.5.14 Registration clutch (CLT1)
4.5.15 Registration roller
4.5.16 Paper feed drive gear
4.6 Developer Unit, Cleaner
4.6.1 Waste toner box
4.6.2 Developer unit
4.6.3 Developer material
4.6.4 Doctor blade
4.6.5 Auto-toner sensor (S1, S2, S3, S4)
4.6.6 Development sleeve
4.6.7 Mixer
4.6.8 Cleaner unit
4.6.9 Main charger
4.6.10 Drum
4.6.11 Drum cleaning blade
4.6.12 Waste toner unit gear
4.6.13 Main charger grid
4.6.14 Main charger cleaner
4.6.15 Needle electrode
4.6.16 New/old drum detection switches (SW9, SW10, SW11, SW12) and new/old
developer unit detection switches (SW13, SW14, SW15, SW16)
4.6.17 Drum thermistor (THM4)
4.6.18 Temperature/humidity sensor (S10)
4.6.19 Waste toner paddle rotation detection sensor (S9)
4.6.20 Waste toner paddle motor (M7)
4.6.21 Drum switching detection sensor (S11)
4.6.22 Drum switching motor (M3)
4.6.23 Paper feeding/developer unit drive motor (M2)
4.6.24 Paper feeding/developer drive unit
4.6.25 Developer unit (K) drive gear
4.6.26 Toner motor assembly
4.6.27 Toner motor (M8, M9, M10, M11)
4.6.28 Toner cartridge interface PC board
4.6.29 Ozone filter
4.6.30 Ozone exhaust fan (F2)
4.6.31 SYS board cooling fan (F1)
4.6.32 Switching regular cooling fan (F3)
4.6.33 Drum drive gear
4.6.34 Developer drive gear
4.6.35 Main power switch (SW4)
4.6.36 Drum damp heater (Right)
4.6.37 Drum damp heater (Left)
4.7 Transfer Units (TBU, TRU)
4.7.1 Transfer belt cleaning unit
4.7.2 Transfer belt cleaning blade/blade seal
4.7.3 Transfer belt unit (TBU)
4.7.4 Transfer belt
4.7.5 Drive roller
4.7.6 1st transfer roller
4.7.7 2nd transfer roller
4.7.8 2nd transfer roller unit (TRU)
4.7.9 Paper clinging detection sensor (S18)
4.7.10 1st transfer contact/release clutch (CLT3)
4.7.11 1st transfer roller status detection sensor (S12)
4.7.12 Drum/TBU motor (M6)
4.7.13 Drum TBU drive unit
4.8 Image Quality Control
4.8.1 Image quality control unit
4.8.2 Image position aligning sensor (Front) (S7)
4.8.3 Image position aligning sensor (Rear)/Image quality sensor (S8)
4.8.4 Registration sensor (S6)
4.9 Fuser Unit
4.9.1 Fuser unit
4.9.2 Front side cover
4.9.3 Rear side cover
4.9.4 Fuser roller cover
4.9.5 Fuser roller separation finger
4.9.6 Pressure roller separation finger
4.9.7 Fuser roller center thermostat (THMO1)/fuser roller rear thermostat (THMO2)
4.9.8 Fuser roller center thermistor (THM1)/fuser roller side thermistor (THM2)/fuser
roller edge thermistor (THM3)
4.9.9 Center heater lamp (LAMP1), Side heater lamp (LAMP2)
4.9.10 Paper entrance guide
4.9.11 Pressure roller
4.9.12 Fuser roller
4.9.13 Paper exit sensor (S13)
4.9.14 Paper exit unit
4.9.15 Exit roller
4.9.16 Exit motor (M5)
4.9.17 Fuser motor (M4)
4.9.18 Fuser drive unit
4.10 Automatic Duplexing Unit (ADU) (OPTION: MD-0105)
4.10.1 Automatic duplexing unit (ADU)
4.10.2 Feed clutch (CLT2)
4.10.3 Transport roller
4.10.4 Transport unit
4.10.5 ADU middle cover
4.10.6 ADU guide assembly
4.10.7 ADU control board (ADU)
4.10.8 ADU drive unit/ADU entrance sensor (S14)/ADU exit sensor (S15)/ADU motor
(M12)
4.10.9 Side cover interlock switch (SW3)
4.11 Removal and Installation of Options
4.11.1 MR-3024 (Reversing Automatic Document Feeder)
4.11.2 KD-1032 (Paper Feed Pedestal)
4.11.3 KD-1031 (Large Capacity Feeder)
4.11.4 MY-1040 (Paper Feed Unit)
4.11.5 KN-2550 (Bridge Kit)
4.11.6 MJ-1036 (Inner Finisher)
4.11.7 MJ-1037 (Saddle Stitch Finisher)
4.11.8 MJ-5004 (Job Separator)

5. SELF-DIAGNOSTIC MODE
5.1 Overview
5.2 Service UI
5.2.1 Overview
5.2.2 Login procedure
5.2.3 [SERVICE MODE] Screen
5.2.4 Setting/Changing password
5.3 Input check (Test mode 03)
5.4 Output check (test mode 03)
5.5 Test print mode (test mode 04)
5.6 Operation Procedure in Adjustment Mode (05)
5.7 Test print pattern in Adjustment Mode (05)
5.8 Operation Procedure in Setting Mode (08)
5.9 Assist Mode (3C)
5.9.1 General description
5.9.2 Operating Procedure
5.9.3 Functions
5.10 HDD Assist Mode (4C)
5.10.1 General description
5.10.2 Operation procedure
5.10.3 Functions
5.11 File System Recovery Mode (5C)
5.11.1 Overview
5.11.2 Operation procedure
5.11.3 Functions
5.12 SRAM Clear Mode (6C)
5.12.1 General description
5.12.2 Operation procedure
5.12.3 Functions
5.13 List print mode (9S)
5.13.1 Operation procedure
5.13.2 List Printing
5.14 Pixel counter
5.14.1 Outline
5.15 Batch setting for installing/disconnection HDD
5.16 Batch Setting for Self-Diagnostic Codes (When HDD is mounted)
5.16.1 General description
5.16.2 Applicable codes
5.16.3 Setting files
5.16.4 Result files
5.16.5 Operation procedure

6. SETTING / ADJUSTMENT
6.1 Image Related Adjustment
6.1.1 Adjustment Order
6.1.2 Adjustment of the Auto-Toner Sensor
6.1.3 Performing Image Quality Control
6.1.4 Adjustment of Color Registration Control
6.1.5 Image Dimensional Adjustment
6.1.6 Paper alignment at the registration roller
6.1.7 Image dimensional adjustment at the printing section
6.1.8 Image dimensional adjustment at the scanning section
6.1.9 Image dimensional adjustment in the copy/printer/fax function
6.2 Image Quality Adjustment (Copying Function)
6.2.1 Automatic gamma adjustment
6.2.2 Density adjustment
6.2.3 Color balance adjustment
6.2.4 Gamma balance adjustment
6.2.5 Background adjustment
6.2.6 Judgment threshold for ACS (common for copy and scan)
6.2.7 Sharpness adjustment
6.2.8 Setting range correction
6.2.9 Adjustment of smudged/faint text
6.2.10 Color Adjustment of Marker
6.2.11 LED emission level adjustment
6.2.12 Maximum toner density adjustment to paper type
6.2.13 Maximum text density adjustment
6.2.14 Text/Photo reproduction level adjustment
6.2.15 Black header density level adjustment
6.2.16 Black area adjustment in twin color copy mode
6.2.17 Judgment threshold adjustment for blank originals (common for copy and scan).
6.2.18 Background offsetting adjustment for RADF (common for copy, scan and fax)6-41
6.2.19 Twin color copy / mono color copy adjustment
6.2.20 Maximum density adjustment for each paper type
6.2.21 Color reproduction selection
6.2.22 Hue adjustment
6.2.23 Saturation adjustment
6.2.24 ADF noise reduction (Copying Function)
6.3 Image Quality Adjustment (Printing Function)
6.3.1 Automatic gamma adjustment
6.3.2 Gamma balance adjustment (Black Mode)
6.3.3 Color balance adjustment
6.3.4 Adjustment of faint text
6.3.5 Upper limit value in the Toner Saving Mode
6.3.6 Maximum toner density adjustment (OHP)
6.3.7 Fine line enhancement switchover
6.3.8 “PureBlack/PureGray” threshold adjustment (PCL)
6.3.9 “PureBlack/PureGray” threshold adjustment (Twin color mode)
6.3.10 “PureBlack/PureGray” threshold adjustment (PS)
6.3.11 “PureBlack/PureGray” threshold adjustment (XPS)
6.3.12 Toner limit threshold adjustment
6.3.13 Sharpness adjustment
6.3.14 Thin line width lower limit adjustment
6.3.15 Offsetting adjustment for background processing
6.3.16 Color/black judgment setting for twin color printing images
6.3.17 LED emission level adjustment
6.3.18 Density adjustment of graphic lines (1200 dpi)
6.4 Image Quality Adjustment (Scanning Function)
6.4.1 Gamma balance adjustment
6.4.2 Density adjustment
6.4.3 Background adjustment (Color Mode)
6.4.4 Background adjustment (Black/Grayscale)
6.4.5 Judgment threshold for ACS (common for copy and network scan)
6.4.6 Sharpness adjustment
6.4.7 Fine adjustment of black density
6.4.8 RGB conversion method selection
6.4.9 Adjustment of saturation
6.4.10 Background offsetting adjustment for RADF (common for copy, scan and fax)6-72
6.4.11 Adjustment of the capacity and image quality of SlimPDF
6.4.12 Surrounding void amount adjustment
6.4.13 Judgment threshold adjustment for blank originals (common for copy and scan).
6.4.14 JPEG compression level adjustment
6.4.15 ADF noise reduction (Scanning Function)
6.5 Image Quality Adjustment (FAX Function)
6.5.1 Density adjustment
6.5.2 LED emission level adjustment
6.5.3 Background offsetting adjustment for RADF (common for copy, scan and fax)6-77
6.6 Scanner
6.6.1 Adjustment carriages-1 positions
6.6.2 Position adjustment of CCD lens unit
6.6.3 Belt tension adjustment of the Scan motor
6.7 Writing Section
6.7.1 Image Adjustment in the Writing Section
6.8 Paper Feeding System
6.8.1 Adjusting the clearance of the paper and side guides
6.8.2 Separation roller pressure force adjustment (PFU/PFP)
6.9 Process Unit Related Section
6.9.1 High-Voltage Transformer Setting
6.10 Developer Unit
6.10.1 Adjustment of the Auto-Toner Sensor
6.10.2 Adjustment of the doctor-to-sleeve gap
6.11 Image Quality Control
6.11.1 Performing Image Quality Control
6.12 Fuser Unit / Paper Exit Section
6.12.1 Adjustment of the non-contact thermistor Gap
6.12.2 Correction of Performing non-contact thermistor
6.12.3 Adjustment of the thermostat Gap

7. PREVENTIVE MAINTENANCE (PM)
7.1 General Description
7.2 PM Display
7.2.1 General Description
7.2.2 PM Display Conditions
7.2.3 PM Display Contents
7.2.4 Counter Clearing
7.3 General Descriptions for PM Procedure
7.4 PM Support Mode
7.4.1 General Description
7.4.2 Operational flow
7.4.3 Operational screen
7.4.4 Access tree
7.5 Work flow of parts replacement
7.6 Preventive Maintenance Checklist
7.6.1 Feed unit
7.6.2 Bypass feed unit
7.6.3 Main charger
7.6.4 Drum unit, Cleaner related section
7.6.5 Developer unit (K, Y, M, and C)
7.6.6 2nd transfer roller unit
7.6.7 RADF (MR-3024)
7.6.8 PFP (KD-1032)
7.6.9 LCF (KD-1031)
7.6.10 PFU (MY-1040)
7.6.11 JSP (MJ-5004)
7.7 Storage of Supplies and Replacement Parts
7.8 PM KIT
7.9 Maintenance Part List
7.10 Grease List
7.11 Machine Refreshing Checklist
7.12 Machine Refreshing Kit

8. ERROR CODE AND TROUBLESHOOTING
8.1 General Descriptions
8.1.1 If a problem continues even after performing all troubleshooting
8.1.2 Collection of debug logs with a USB device
8.1.3 Traceability label
8.2 Error Code List
8.2.1 Jam
8.2.2 Service call
8.2.3 Error in Internet FAX / Scanning Function
8.2.4 Printer function error
8.2.5 TopAccess related error/Communication error with external application
8.2.6 MFP access error
8.2.7 Maintenance error
8.2.8 Network error
8.2.9 Error history
8.3 Diagnosis and Prescription for Each Error Code
8.3.1 Check item
8.3.2 Paper transport jam (paper exit section)
8.3.3 Paper misfeeding
8.3.4 Paper transport jam
8.3.5 Other paper jam
8.3.6 Cover open jam
8.3.7 RADF jam
8.3.8 Paper jam in bridge unit
8.3.9 Paper jam in job separator
8.3.10 Paper jam in finisher section
8.3.11 Paper jam in saddle stitcher section
8.3.12 Paper jam in puncher unit
8.3.13 Other paper jam
8.3.14 Drive system related service call
8.3.15 Paper feeding system related service call
8.3.16 Scanning system related service call
8.3.17 Fuser unit related service call
8.3.18 Communication related service call
8.3.19 RADF related service call
8.3.20 Circuit related service call
8.3.21 LED printer head related service call
8.3.22 Finisher related service call
8.3.23 Image control related service call
8.3.24 Copy process related service call
8.3.25 Other service call
8.3.26 Error in Internet FAX / Scanning Function
8.3.27 Printer function error
8.3.28 TopAccess related error/Communication error with external application
8.3.29 MFP access error
8.3.30 Maintenance error
8.3.31 Network error
8.4 Other errors
8.4.1 Equipment operation disabled after the installation of option(s)
8.4.2 Wireless LAN connection disabled
8.4.3 “Invalid Department Code” is displayed
8.4.4 Paper folded on the leading edge
8.4.5 Toner cartridge unrecognized
8.4.6 Ethernet disabled in half-duplex communication
8.4.7 The equipment does not start after the power has been turned ON
8.4.8 “Authentication Failed” is displayed
8.4.9 Hard disk full error “H04” is displayed
8.4.10 Error code “M00” is displayed while updating firmware
8.5 Troubleshooting for the Image
8.5.1 Color deviation
8.5.2 Uneven pitch and jitter image
8.5.3 Poor image density, color reproduction and gray balance
8.5.4 Background fogging 1
8.5.5 Background fogging 2 (1200 dpi printing)
8.5.6 Moire /lack of sharpness
8.5.7 Toner offset
8.5.8 Blurred image
8.5.9 Poor fusing
8.5.10 Blank print
8.5.11 Solid print
8.5.12 White banding (in feeding direction)
8.5.13 White banding (at right angles to feeding direction)
8.5.14 Skew (slantwise copying)
8.5.15 Color banding (in feeding direction)
8.5.16 Color banding (at right angles to feeding direction)
8.5.17 White spots
8.5.18 Poor transfer
8.5.19 Uneven image density 1 (in feeding direction)
8.5.20 Uneven image density 1 (at right angles to feeding direction)
8.5.21 Uneven image density 2
8.5.22 Faded image (low density)
8.5.23 Image dislocation in feeding direction
8.5.24 Image jittering
8.5.25 Poor cleaning
8.5.26 Uneven light distribution
8.5.27 Blotched image
8.5.28 Stain on the paper back side
8.5.29 White void in the halftone
8.5.30 Paper wrinkle
8.5.31 Staining at the leading/trailing edge
8.5.32 Faint image
8.5.33 Toner scattering
8.5.34 Feathered image
8.5.35 Image Skewing on Paper Trailing Edge

9. REPLACEMENT OF PC BOARDS/HDD
9.1 Removal and Installation of PC Boards/HDD
9.1.1 SYS Board cover
9.1.2 SYS board
9.1.3 Solid State Drive (SSD)
9.1.4 Hard disk (HDD)
9.1.5 PFC cover
9.1.6 LGC board
9.1.7 Switching regulator
9.1.8 High-voltage transformer (HVT)
9.1.9 CFD board
9.1.10 SRAM board <for SYS board>
9.1.11 EEPROM <for LGC board>
9.1.12 CTIF board
9.2 Precautions, Procedures and Settings for Replacing PC Boards and HDD/SSD
9.2.1 Precautions when replacing PC boards
9.2.2 HDD/SSD fault diagnosis
9.2.3 Precautions and procedures when replacing the HDD/SSD
9.2.4 Precautions and Procedures when replacing the SYS board
9.2.5 Precautions and procedure when replacing the SRAM board (for the SYS board)
9.2.6 Procedures and settings when replacing EEPROM (for LGC board)
9.2.7 Procedures and settings when replacing the Lens unit
9.2.8 Firmware confirmation after the PC board/HDD replacement
9.2.9 License re-registration using the one-time dongle
9.3 Precautions for Installation of GP-1070 and Disposal of HDD/SSD/Board
9.3.1 Precautions for Installation of GP-1070
9.3.2 Precautions when disposing of HDD/SSD
9.3.3 Precautions when disposing of the SYS board
9.3.4 Precautions when disposing of the SRAM board (for SYS board)

10. REMOTE SERVICE
10.1 Auto Supply Order
10.1.1 Outline
10.1.2 Setting Item
10.1.3 Setting procedure
10.1.4 Order Sheet Format
10.2 Service Notification
10.2.1 Outline
10.2.2 Setting
10.2.3 Items to be notified

11. FIRMWARE UPDATING
11.1 Overview
11.2 Firmware Updating with a USB Device
11.2.1 Updating methods
11.2.2 Firmware type and data file name for updating
11.2.3 Folder configuration of a USB device
11.2.4 Update procedure
11.3 Firmware Updating with PWA-DWNLD-JIG2F
11.3.1 Writing the data to the download jig (PWA-DWNLD-JIG2F)
11.3.2 System firmware
11.4 Firmware Updating with K-PWA-DLM-320F
11.4.1 FAX unit firmware (GD-1320)
11.5 Confirmation of the updated data
11.6 When Firmware Updating Fails
11.6.1 Procedure
11.6.2 Flow chart for correcting USB update failure

12. BACKUP FUNCTION
12.1 Data Cloning
12.1.1 General description
12.1.2 Precautions
12.1.3 Backup files
12.1.4 Cloning procedure
12.2 AES Data Encryption Function Setting
12.2.1 General description
12.2.2 Precautions
12.2.3 Setting procedure
12.2.4 Procedure for disabling data encryption function
12.2.5 Procedure for discarding HDD when data encryption function is enabled
12.3 High Security Mode
12.3.1 General description
12.3.2 Prior confirmation
12.3.3 Procedure for entering the High Security Mode
12.3.4 Precautions

13. EXTERNAL COUNTERS
13.1 Outline
13.2 Signal
13.2.1 Pin Layout
13.2.2 Details of the signals
13.3 Notices
13.3.1 Setting code
13.3.2 Setting value change and restrictions when using the Card Controller
13.3.3 Setting value change and restrictions when using the coin controller
13.3.4 Installation of External Counter
13.3.5 Setting value
13.3.6 Restrictions when using the external counter

14. WIRE HARNESS CONNECTION
14.1 AC Wire Harness
14.2 DC Wire Harness / Electric Parts Layout
14.2.1 DC Wire Harness
14.2.2 Electric Parts Layout
15. SELF-DIAGNOSIS CODE (03/04/05/08 CODE)
e-STUDIO2050C/2550C
1Input check (Test mode 03)
1Output check (test mode 03)
1Test print mode (test mode 04)
1Adjustment Mode (05) Codes
1Setting Mode (08) Codes
e-STUDIO2051C/2551C
1Input check (Test mode 03)
1Output check (test mode 03)
1Test print mode (test mode 04)
1Adjustment Mode (05) Codes
1Setting Mode (08) Codes

APPENDIX
Maintenance check list

Number of pages: 1534.