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Anritsu MS9720A Service Manual

Anritsu MS9720A Service Manual

Wdm network tester
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MS9720A
WDM Network Tester
Service Manual
Second Edition
To ensure that this equipment is used safely,
important safety items are explained in the
MS9720A WDM Network Tester Operation
Manual. This manual explains important ser-
vice items related to service. Read both the
operation manual and this manual, and keep
both with the equipment.
ANRITSU CORPORATION
Document No.: M-W1343BE-2.0

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Summary of Contents for Anritsu MS9720A

  • Page 1 Second Edition To ensure that this equipment is used safely, important safety items are explained in the MS9720A WDM Network Tester Operation Manual. This manual explains important ser- vice items related to service. Read both the operation manual and this manual, and keep both with the equipment.
  • Page 2 Safety Symbols To prevent the risk of personal injury or loss related to equipment malfunction, Anritsu Corporation uses the following safety symbols to indicate safety-related information. Insure that you clearly understand the meanings of the symbols BEFORE using the equipment.
  • Page 3 Always request repair by a trained engineer who understands the hazards. Anritsu Corporation will not accept liability for any injuries sustained as a result of opening the equipment covers.
  • Page 4 This equipment cannot be repaired by the user. DO NOT at- tempt to open the cabinet or to disassemble internal parts. Repair Only Anritsu-trained service personnel or staff from your sales representative with a knowledge of electrical fire and shock hazards should service this equipment. There are...
  • Page 5 Power Line Fuse Protection For safety, Anritsu products have either one or two fuses in the AC power lines as requested by the customer when ordering. Single fuse: A fuse is inserted in one of the AC power lines. Double fuse: A fuse is inserted in each of the AC power lines.

  • Page 7: About This Manual

    This manual is written for service personnel trained by Anritsu Service Training Course and explains how to service the Anritsu MS9720A WDM Network Tester, how to install the light source, how to install the latest software version, and how to troubleshoot faults.

  • Page 8: Table Of Contents

    Table of Contents For Safety ............About This Manual ........Section 1 Outline .......... Upgrading software ..............Troubleshooting and repairing faults ........Section 2 Name and Function of Each Part Part Names ..............Removing Covers ............2.2.1 Removing Top Cover ........2.2.2 Removing Left Side Cover ......
  • Page 9 Table of Contents Section 4 Installing Light Sources ....Outline ................Reference Light Source & SLD ........4.2.1 Parts ............... 4.2.2 Installing ............Section 5 Troubleshooting ......General ................. Error Message at Initial Screen ........Abnormal Data I/O ............Abnormal Measurement ..........Abnormal Performance ..........

  • Page 11: Section 1 Outline

    Section 1 Outline This section outlines the maintenance procedures, Upgrading software ........Troubleshooting and repairing faults .....

  • Page 12: Upgrading Software

    Section 1 Outline The MS9720A WDM Network Tester should be maintained by an Anritsu- trained service engineer. The maintenance work includes the following: • Upgrading software • Troubleshooting and repairing faults Removal of the covers and modules is explained in Section 2.

  • Page 13: Troubleshooting And Repairing Faults

    The functions of each module are explained in Section 2. Sections 5 and 6 ex- plain how to troubleshoot faults and how to exchange modules. Faulty modules are repaired at the Anritsu Plant. For parts-level repair to mod- ules, send the module to Anritsu noting the description in item 6.2.
  • Page 14 Section 1 Outline...

  • Page 15: Section 2 Name And Function Of Each Part

    Section 2 Name and Function of Each Part This section explains how to remove the equipment covers and the location and function of each exchangeable module. Part Names ............ Removing Covers .......... 2.2.1 Removing Top Cover ......2.2.2 Removing Left Side Cover ....2.2.3 Removing Right Side Cover ....

  • Page 16: Part Names

    Section 2 Name and Function of Each Part 2.1 Part Names The location of the replacable modules and related parts are shown in figures 2-1 to 2-6. Table 2-1 Location of Replacable Modules Module Name Figure Control Module Fig. 2-4 (5) Motor Drive Module Fig.
  • Page 17 (2) Rear Panel (1) Printer s te o rk e tw 5 µ 1 .6 9 7 2 1 .4 (6) Side Handle (3) Front Panel (4) FDD Module (5) Power Switch Fig. 2-1 Front View (1) GPIB Interface Connector (2) RS-232C Interface Connector (4) Printer Cover Button Monitor Output...
  • Page 18 Section 2 Name and Function of Each Part (2) Printer Module (1) Printer Driver Module (3) Interface Module (4) Optical Module (7) Power Unit Module (6) Reference Light Module (5) Reference Light & SLD Fig. 2-3 Top Cover Open (1) Printer Chassis (3) Optical Module (2) Interface Module (5) Power Module...
  • Page 19 (1) Panel Module (2) LCD Module Protective Cover Fig. 2-5 Panel/LCD Modules (1) Mother Board Module (2) FDD Module Fig. 2-6 Motherboard...

  • Page 20: Removing Covers

    Section 2 Name and Function of Each Part 2.2 Removing Covers Rear Foot Holder Top Cover Printer Cover Button Printer Cover Rear Panel Front Foot Holder Rear Foot Holder Front Panel Front Foot Holder 2.2.1 Removing Top Cover Remove the screws 1 to 4 securing the Rear Foot Holders. Remove the screw 5 securing the center of the top cover to the Rear Panel.

  • Page 21: Removing Left Side Cover

    2.2.2 Removing Left Side Cover Rear Foot Holder Top Cover Side Frame Side Handle Rear Foot Rubber Cover Rear Panel Front Foot Holder Rear Foot Holder Front Foot Rear Foot Front Foot Side Frame Front Foot Holder Side Handle Rubber Cover Open the rubber covers at each end of the Side Handle and remove the two screws;...

  • Page 22: Removing Rear-Panel Cover 1

    Section 2 Name and Function of Each Part 2.2.4 Removing Rear-Panel Cover 1 Remove the Top Cover. (See 2.2.1.) Disconnect the cables connected to the Control Module. (See Fig. 2-4 for the module location.) Disconnect the cables connected to the Measurement Module. (See Fig. 2-4.) Remove the eight screws securing the right and left Rear Foot Holders and Rear Feet.

  • Page 23: Opening Printer Chassis

    2.2.5 Opening Printer Chassis Remove the roll of printer paper. Disconnect the Measurement Module Cable 1 connected to the Measure- ment Module. Measurement Module Cable 1 Measurement Module Cable 2 Remove screws 1 to 6. Open the printer chassis.

  • Page 24: Removing Bottom Cover

    Section 2 Name and Function of Each Part 2.2.6 Removing Bottom Cover Bottom Cover Rear Foot Rear Foot Front Foot Front Foot Remove four screws 1 to 4 and remove the two Rear Feet. Remove the screw 5 securing the center of the Bottom Cover to the Rear Panel.

  • Page 25: Explanation Of Modules

    2.3 Explanation of Modules Each module is connected as shown in Figure below. Panel Motor Drive Module Module Optical Module Module A6 Motherboard Module Inverter Measurement Module Module E2 Fan Module Control 2 Printer Driver See Note below. Module Power Control 1 Interface Module...

  • Page 26: Motor Drive Module (A2)

    Section 2 Name and Function of Each Part 2.3.2 Motor Drive Module (A2) This module receives the wavelength data from the Measurement Module, sets the position of the refractive elements, generates voltage and outputs it to the Power Module. It drives the motors controlling the resolution, optical axis adjust- ment and optical attenuates, etc., and sends the position data for the motors to the Measurement Module.

  • Page 27: Interface Module (A5)

    2.3.5 Interface Module (A5) This module: (a) Controls the RS-232C signals, and sends data to and from the Control Module. (b) Controls the GP-IBC signals and sends data to and from the Control Mod- ule. 2.3.6 Reference Light Module (A9) This module controls the Reference Module current.

  • Page 28: Motherboard Module (A12)

    Section 2 Name and Function of Each Part 2.3.9 Motherboard Module (A12) The Motherboard Module connects the signals from the following modules and supplies power to each module. • Control Modules • Motor Drive Module • Panel Module • Measurement Module •...

  • Page 29: Section 3 Maintenance Mode

    Section 3 Maintenance Mode This section describes the maintenance mode operations for the MS9720A. Role of Maintenance Mode and Start Method . 3.1.1 Role of Maintenance Mode ....3.1.2 Starting Maintenance Mode ....Maintenance Operations ....... 3.2.1 Updating Software Version ....

  • Page 30: Role Of Maintenance Mode And Start Method

    Section 3 Maintenance Mode 3.1 Role of Maintenance Mode and Start Method 3.1.1 Role of Maintenance Mode The Maintenance Mode is a special operation mode for maintenance including settings for the MS9720 series software updates and option additions. The Main- tenance Mode is not accessible by general users and is not used in day-to-day operations.

  • Page 31: Maintenance Operations

    3.2 Maintenance Operations This section explains the procedures required to maintain the MS9720 series. To execute the following procedures, first, start the MS9720 series in the Mainte- nance Mode (3.1.2). 3.2.1 Updating Software Version The software version can be updated via the floppy disk drive (FDD) using the Maintenance Mode download function.

  • Page 32: Initializing Backup Ram

    Section 3 Maintenance Mode 3.2.2 Initializing Backup RAM To initialize the backup RAM, select the Backup RAM card and then select Yes. Initializing the backup RAM deletes all the previously-saved measurement con- ditions, so only use this function when necessary such as after downloading up- date software.

  • Page 33: Adding Options

    3.2.4 Adding Options To add an option, select Option Setup and select the number of the option to be updated from the right side of the screen. Options 1 to 5 are displayed; to display more options, press the More key. When the option number to be updated is selected, an On/Off selection choice is displayed;...

  • Page 34: Setting Equipment Version Display

    Section 3 Maintenance Mode 3.2.5 Setting Equipment Version Display To set the equipment version, select Version No. Select the digit to update with the arrows, input the numeric value using the ten keys and complete the setting by pressing the Exec key. 3.2.6 Other Special Functions The Log Data Save card is a special function used for development.

  • Page 35: List Of Function Keys

    Option xx f5 Option xx f6 More x/5 f7 Exit f1 Exec f3 ← F5 Log Data Save f4 → f7 Exit f1 Exec f3 ← F6 Version No. Set f4 → f7 Exit f1 MS9720A F7 Type f2 MS9715M...
  • Page 36 Section 3 Maintenance Mode...

  • Page 37: Section 4 Installing Light Sources

    Section 4 Installing Light Sources This section describes the installation and setting of light sources in the tester. Outline ............Reference Light Source & SLD ..... 4.2.1 Parts ........... 4.2.2 Installing ..........

  • Page 38: Outline

    Section 4 Installing Light Sources 4.1 Outline This section describes the installation and setting of light sources in the tester. The following tools are required for the installation. Table 4-1 Installation Tools Name Remarks Driver Driver M2.6 Driver CAUTION The optical fibers are easily damaged during installa- tion.

  • Page 39: Parts

    4.2 Reference Light Source & SLD The Wavelength Reference Light Source outputs reference light with a waveform of 1.53 µm to 1.57 µm from a Super Luminescence Diode (SLD); the output is split into two, both of which can be used for calibration. 4.2.1 Parts The Wavelength Reference Light Source is composed of the following parts.
  • Page 40 Section 4 Installing Light Sources Reference Light output SLD output 8 pin Fig. 4-1 Reference Light Source & SLD 8 pin 5 pin Fig. 4-2 REFERENCE LIGHT PC-Board Fig. 4-3 DF1B Cable...
  • Page 41 Fig. 4-4 Insulator 1 Fig. 4-5 Insulator 2 Fig. 4-6 Insulation Rubber...

  • Page 42: Installing

    Section 4 Installing Light Sources Fig. 4-7 Insulation Sheet Fig. 4-8 Plastic Screw 4.2.2 Installing CAUTION After fitting this option, always check the electrical in- sulation between the Reference Module and Chassis. If the Reference Module is not isolated from the chassis, it will be damaged when the optical output is switched (1) Remove the Top Cover.
  • Page 43 (5) Fit the Option Module on the Insulation rubber using the plastic screws. (6) Put the Insulation Sheet on the top of the Reference Module with double sided adhesive tape for insulation between the Module and the Top Cover. (7) Remove the Back Panel. (8) Disconnect W5 from the Printer Driver Module, and the Printer Driver from the Printer Chassis.
  • Page 44 Section 4 Installing Light Sources Reference SLD Connector Light Source Connector Optical Module Front (12) Connect X1 (5 pin) of the Refernce Light Module to X 10 of the Measure- ment Module using the DFIB Cable.
  • Page 45 (13) Close the Printer Chassis and tighten the screws. (14) Secure the Printer Driver Module to the Printer Chassis and connect the W5 Cable to the Printer Driver Module. (15) Fit the Reference Light PC-board to the Printer Chassis. Pass the optical fiber of the Reference Module under the PC board.
  • Page 46 Section 4 Installing Light Sources 4-10...

  • Page 47: Section 5 Troubleshooting

    Section 5 Troubleshooting This section explains the types of faults that may occur and how to troubleshoot and replace the faulty module. General ............Error Message at Initial Screen ..... Abnormal Data I/O ......... Abnormal Measurement ........ Abnormal Performance ........
  • Page 48 Table 5-1 shows the faults and related modules. For more details, refer to the relevant section in this manual. Refer to Appendix A in the MS9720A Operation Manual for a description of troubleshooting faults. Refer to Section 6 for a description of how to change a faulty module. When changing a module ALWAYS switch OFF the power and DISCONNECT the power cord from the power outlet.

  • Page 49: General

    5.1 General Fault Exchange Module No power • LCD not lit Power Unit Module • Fan not turning • PC board LEDs not lit LCD Module Fan turning but LCD not lit Control Module LCD lit but Fan not turning Fan Module 5.2 Error Message at Initial Screen Fault...

  • Page 50: Abnormal Data I/O

    Section 5 Troubleshooting 5.3 Abnormal Data I/O Fault Exchange Module Panel Block Module No input at any key Control Module No input at specific keys Panel Block Module Key input OK but no input at Panel Block Module rotary encoder Interface Module No GPIB control Control Module...

  • Page 51: Abnormal Performance

    5.5 Abnormal Performance Fault Exchange Module Fault Exchange Module Following out-of-spec • Level accuracy Optical Module • Wavelength accuracy Measurement Module • Resolution accuracy • Wavelength flatness Following out-of-spec • Dynamic range • Polarization characteristics • Measurement level Optical Module range •...
  • Page 52 Section 5 Troubleshooting...

  • Page 53: Section 6 Repair

    Section 6 Repair This section explains how to exchange faulty modules and how to test the equip- ment after making the exchange. Refer to Section 2 for a description of how to remove the covers and how to open the printer chassis. Removing and Testing Each Module .....

  • Page 54: Removing And Testing Each Module

    Section 6 Repair 6.1 Removing and Testing Each Module This section explains how to exchange and test each module listed in Table 1-2. WARNING BEFORE exchanging a module, ALWAYS disconnect the power cord form the power outlet. If this precau- tion is ignored, there is a high risk of receiving a fatal or very serious electric shock.

  • Page 55: Motor Drive Module

    6.1.2 Motor Drive Module • Exchange Printer Chassis Motor Drive Module Remove the Top Cover. 2.2.1 Lift open the printer chassis. 2.2.5 Pull out the Power Module to remove the PC board clamps. Pull out the Motor Drive Module. Insert the exchange Motor Drive Module and re-assemble in the reverse procedure.

  • Page 56: Panel Module

    Remove the Bottom Cover. 2.2.6 Remove the Front Panel Frame. Remove the four screws on the left and right securing the Panel Block to the Chassis. MS9720A WDM Network Tester 1.45~1.65 µm I n i t Optical Input SLD Output Menu Remove the four screws securing the PCB Cage from the top.
  • Page 57 12. Remove the two screws 1 and 2 securing the LCD Module from the Left Side Panel. 13. Remove the two screws 3 and 4 securing the LCD Module from the inside of the Panel Block. (1) Panel Module (2) LCD Module Protective Cover 14.

  • Page 58: Measurement/Optical Module

    Section 6 Repair 6.1.4 Measurement/Optical Module Measurement Module • Exchange Printer Chassis Measurement Module Remove the top cover. Open the Printer Chassis. Pull out the Power Module to remove the PC board clamps. Pull out the Measurement Module. Insert the exchange Measurement Module and re-assemble in the reverse procedure.
  • Page 59 Optical Module • Exchange Remove the Back Panel. Remove screws 1~4 and remove the Bracket. Remove cables 1~6. Pull out the Optical Module. Slide in the exchange Optical module and re-assemble in the reverse proce- dure. • Post-exchange Test If the initial screen is displayed at power-on and then the screen is changed to a screen displaying the scales, there is no problem.

  • Page 60: Interface Module

    Section 6 Repair 6.1.5 Interface Module • Exchange Rear-Panel Cover 1 Cable GPIB Connector GPIB Cable Interface Module Remove the Rear-Panel Cover 1. (See 2.2.4.) Remove Pillars 1 and 2 of the GPIB connector from the Rear Panel side. Disconnect the GPIB cable. Disconnect the VGA cable from Control Module.

  • Page 61: Reference Light Module

    6.1.6 Reference Light Module • Exchange Reference Light Module Remove the Top Cover. (See 2.2.1.) Disconnect the two cables. Remove screws 1 through 4 and remove the Reference Light Module. Install the exchange Reference Light Module using screws 1through 4. Re-assemble in the reverse procedure.

  • Page 62: Reference Light Source & Sld

    Section 6 Repair 6.1.7 Reference Light Source & SLD • Exchange Reference Light Source & SLD Remove the Top Cover. (See 2.2.1.) Disconnect the cable attached to the Printer Driver Module from the con- nector at the Printer Driver Module side. Remove screws 1 through 4 securing the Reference Light Source &...

  • Page 63: Power Module

    6.1.8 Power Module • Exchange Printer Chassis Power Module Remove the Top Cover. (See 2.2.1.) Lift open the Printer Chassis. (See 2.2.5.) Pull out the Power Module. Slide in the exchange Power Module and re-assemble in the reverse proce- dure. •...

  • Page 64: Motherboard Module

    Section 6 Repair 6.1.9 Motherboard Module • Exchange Mother Board Module Remove the Top Cover. (See 2.2.1.) Lift open the Printer Chassis. (See 2.2.5.) Remove the one screw and PC board clamp. Remove the four PC boards. Remove the Bottom Cover. (See 2.2.6.) Disconnect the seven cables.

  • Page 65: Power Unit Module

    6.1.10 Power Unit Module • Exchange Remove the Bottom Cover. (See 2.2.6.) Remove the Left Side Cover. (See 2.2.2.) Remove the Top Cover. (See 2.2.1) Remove the Printer Paper. Remove screws 1 through 6 and remove the printer chassis. Printer Cable Printer Chassis 6-13...
  • Page 66 Section 6 Repair Protective Cover Power Unit Module Disconnect the cable connected to the Measurement Module. Remove the one screw securing the PC board clamps. Remove all the PC board modules. Remove screws 7 and 8, and remove the protective cover. 10.

  • Page 67: Fan Module

    6.1.11 Fan Module • Exchange Remove the four screws securing the Fan Cover. Disconnect the cable to the Motherboard. Remove the Fan Module. Fit the exchange Fan Module using screws 1~4 mounting the Fan Cover at the same time. Re-assemble in the reverse procedure. •...

  • Page 68: Printer Driver Module

    Section 6 Repair 6.1.13 Printer Driver Module • Exchange Printer Driver Module Remove the Top Cover. (See 2.2.1.) Disconnect three cables. Remove four screws and remove the Printer Driver Module. Install the exchange Printer Driver Module and re-assemble in the reverse procedure.

  • Page 69: Printer Module

    6.1.14 Printer Module • Exchange Printer Module Remove the Top Cover. (See 2.2.1.) Disconnect the two cables. Remove four screws and remove the Printer Cover. Remove four screws and remove the Printer Module. Install the exchange Printer Module and re-assemble in the reverse proce- dure.

  • Page 70: Lcd Module

    Remove the Top Cover. 2.2.1 Remove the Bottom Cover. 2.2.6 Remove the Front Panel Frame. Remove the four screws on the left and right securing the Panel Block to the Chassis. MS9720A WDM Network Tester 1.45~1.65 µm Init Optical Input SLD Output Menu Remove the four screws securing the PCB Cage from the top.
  • Page 71 (1) Panel Module (2) LCD Module Protective Cover 14. Remove the LCD Module by sliding it. 15. Fit the new LCD Module in the reverse procedure. • Post-exchange Test If the initial screen is displayed at power-on and then the screen is changed to a screen displaying the scales, there is no problem.

  • Page 72: Factory Repair

    6.2 Factory Repair Sometimes it may be necessary to return faulty equipment or modules to the Anritsu Plant for repair. Before sending the equipment, etc., contact the Anritsu Service Section and provide the following information. • Equipment Name or Module Name, and serial number on the Back Panel •...

  • Page 73: Appendix A List Of Options

    Appendix A List of Options Option No. MS9710B MS9710A (Ver. 2.0 and later) MS9715A MS9720A Option 01 Option 02 White light source Yes = On, No = Off Option 03 Wavelength reference + SLD light source Yes = On, No = Off...
  • Page 74 Appendix A Options...
  • Page 75 MS9720A WDM Network Tester Service Manual Read this manual before using the equipment. Keep this manual with the equipment.
  • Page 76 5-10-27, Minamiazabu, Minato-ku, Tokyo 106-8570 Japan / Phone: 03-3446-1111 ANRITSU CORPORATION Document No.: M-W1343BE Printed in Japan...

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