Anritsu MT9810A Service Manual
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Anritsu MT9810A Service Manual

Anritsu MT9810A Service Manual

Optical test set
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MT9810A
Optical Test Set
Service Manual
Fourth Edition
To ensure that the MT9810A Optical Test Set is
used safety, read the safety information in the
MT9810A Optical Test Set Manual first.
Keep this manual with the Optical Test Set.
Measurement Solutions
ANRITSU CORPORATION
Document No.: M-W1482BE-4.0

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Summary of Contents for Anritsu MT9810A

  • Page 1 MT9810A Optical Test Set Service Manual Fourth Edition To ensure that the MT9810A Optical Test Set is used safety, read the safety information in the MT9810A Optical Test Set Manual first. Keep this manual with the Optical Test Set. Measurement Solutions ANRITSU CORPORATION Document No.: M-W1482BE-4.0...
  • 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: For Safety

    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 For Safety WARNING This equipment uses parts radiating Class 2 or Class 3 laser radia- tion. The warning labels shown on the next page are attached near the laser-radiation locations. The product name and the danger classification specified by IEC60825-1 and 21CFR1040.10 are explained below. Laser Radiation Markings Type IEC60825-1...
  • Page 5 For Safety WARNING Class 1 Safe laser presenting no danger when used according to design specifications. Class 2 Laser radiating in 400 to 700 nm wavelength range. In principal, this class of laser is not safe, but the danger to the eyes is eliminated by the eye avoidance reaction in- cluding the blink response.
  • Page 6 ANRITSU CORP. THIS PRODUCT CONFORMS TO 10-27 MINAMIAZABU 5-CHOME ALL APPLICABLE STANDARDS MINATO-KU, TOKYO, 106, JAPAN UNDER 21 CFR 1040.10 MANUFACTURED AT:ANRITSU CORP. ATSUGI PLANT. y y y <IEC> <IEC> INVISIBLE LASER RADIATION DO NOT STARE INTO BEAM OR VIEW...
  • Page 7 Notes On Export Management This product and its manuals may require an Export License/Approval by the Government of the product’s country of origin for re-export from your country. Before re-exporting the product or manuals, please contact us to confirm whether they are export-controlled items or not.
  • Page 8 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 9 About This Manual This manual is written for service personnel trained by Anritsu Service Training Course and explains how to service the Anritsu MT9810A Optical Test Set, and how to troubleshoot faults. It also explains repair by exchanging modules but does not describe parts-level repair of modules.

  • Page 10: Table Of Contents

    Table of Contents For Safety ............Section 1 General ......... 1.1 Introduction ..............1.2 Safety Precautions ............. 1.3 Components .............. Section 2 Mechanical Configuration ... 2.1 Introduction ..............2.2 Precautions ..............2.3 Mechanical Parts List ..........2.4 Cabinet Disassembly ..........Section 3 Troubleshooting ......

  • Page 11: Section 1 General

    Section 1 General Introduction ..............Safety Precautions ............Components ..............

  • Page 12: Introduction

    Section 1 General Introduction This service manual describes the repair of the MT9810A Optical Test Set (OTS) and plug-in units. Section 2 describes how to disassemble and reassemble OTS, and the internal configuration. Section 3 describes how to troubleshoot and repair when a problem occurs during measurements or when abnor- malities are detected during performance checks.

  • Page 13: Components

    1.3 Components Components Name Model Remarks Main frame Optical Test Set MT9810A Plug-in unit Light Source MU952501A DFB-LD MU952502A DFB-LD MU952503A DFB-LD MU952504A DFB-LD MU952505A DFB-LD MU952601A DFB-LD MU952602A DFB-LD MU952603A DFB-LD MU952604A DFB-LD MU952605A DFB-LD MU952606A DFB-LD MU951301A FP-LD...
  • Page 14 Section 1 General 1-4.

  • Page 15: Section 2 Mechanical Configuration

    Section 2 Mechanical Configuration Introduction ..............Precautions ..............Mechanical Parts List ............. Cabinet Disassembly ............

  • Page 16: Introduction

    Section 2 Mechanical Configuration Introduction This section describes the mechanical structure, the position of the internal units, and the procedure for removing these units to disassemble and reassemble the MT9810A. CAUTION Do not disassemble the plug-in unit. If the unit is broken, exchange it for new unit.

  • Page 17: Mechanical Parts List

    2.3 Mechanical Parts List Mechanical Parts List Mechanical Parts List for Fig. 2-1 (Outer Cabinet) Parts No. Description Qty. W22B3091 Cover W3B11398 Bottom cover W32H11577 Rear cover NO.1002 TM-174 NO.1002 TM-175 Mechanical Parts List for Fig. 2-2 (Inner Cabinet) Parts No. Description Qty.
  • Page 18 Section 2 Mechanical Configuration Mechanical Parts List for Fig. 2-3 (Front Assembly) Parts No. Description Qty. W32H11704 Front frame W3E11622 Rubber switch W4H31492 Filter W4B31493 Dust-proof cushion W4B31501 Filter-fixture 34H39511H M3-B3 support W4N10097C Side sheet Mechanical Parts List for Fig. 2-4 (Rear Assembly) Parts No.

  • Page 19: Cabinet Disassembly

    Cabinet Disassembly Fig. 2-1 Outer Cabinet...

  • Page 21: 2.4 Cabinet Disassembly

    2.4 Cabinet Disassembly...
  • Page 22 Section 2 Mechanical Configuration...

  • Page 23: Section 3 Troubleshooting

    Section 3 Troubleshooting Introduction ..............Recommended Test Equipment ........Block Diagram ..............Overall Troubleshooting ..........3.4.1 Flowchart symbols ..........3.4.2 Troubleshooting ........... Troubleshooting for Main frame ........3-17 3.5.1 Introduction ............3-17 3.5.2 Exchangeable module ......... 3-17 3.5.3 Circuit diagram ............ 3-17 3.5.4 Troubleshooting and repair .........

  • Page 24: Introduction

    Wavelength: 600 to 1600 nm Optical Wavelength/ Frequency: 187 to 500 THz MF9630A Frequency Counter ≤0.1pm Resolution: Optical Spectrum Wavelength: 650 to 1750 nm MS9710B ≤±0.3 nm Analyzer Accuracy: Block Diagram Fig. 3-1 shows the block diagram of the MT9810A and it's plug-in unit.
  • Page 25 Fig. 3-1 Block Diagram...

  • Page 27: Overall Troubleshooting

    Work Check Repair Repair point and its contents NOTE: Explanations described below the figures inside the symbols are setting conditions for the MT9810A. 3.4.2 Troubleshooting (1) Display doesn’t light. (2) Initial Display doesn’t end. (3) Keys on MT9810A are disable.
  • Page 28 Section 3 Troubleshooting (1) Display doesn’t light. Repair MT9810A faulty (2) Initial Display doesn’t end. Repair MT9810A faulty (3) Keys on MT9810A are disable. Repair MT9810A faulty (4) RS-232C control is disable. Repair MT9810A faulty (5) GPIB control is disable.
  • Page 29 Replace Light Source another channel, Repair Repair MT9810A faulty Light Source unit faulty When replace Light Source, power off MT9810A. (9) Key on Optical Unit is disable. Start MT9810A control Optical Unit? Repair Replace Light Optical Unit faulty Source another...
  • Page 30 Section 3 Troubleshooting (10) MT9810A can not control Optical Unit. Start Key on Optical Unit enable? Repair Replace Light Optical Unit faulty Source another Repair MT9810A faulty When replace Light Source, power off MT9810A. (11) Optical Unit performance is out-of-specification.
  • Page 31 3.4 Overall Troubleshooting (12) No signal from Analog Output Repair Optical Sensor faulty (13) Parameter memory backup is abnormal. Repair Optical Unit faulty (14) Trouble with Optical Sensors Zero Setting will Repair measured not complete, or Please contact the value is strange. result in error.
  • Page 32 Section 3 Troubleshooting Is it long setting Repair for measurement Set the mode to suitable interval time? for your measurements. Is it narrow setting for measurement bandwidth? Repair Sensor Unit faulty Is the modulated Repair light measured in Set the mode to suitable the CW mode? for your measurements.
  • Page 33 3.4 Overall Troubleshooting Is the setting of Repair calibrated wavelength Set the mode to suitable different from the for your measurements. measuring beam? Is the end face of Repair the fiber cable or Clean the end of the fiber connector cable and connector.
  • Page 34 Section 3 Troubleshooting (15) Trouble with Light Sources (i) Optical output power is lower. Repair Is the ATT set at Please set the ATT at 0.00 dB? 0.00 dB. Is not the edge of Repair the fiber cable or Please clean the fiber connector edge or the connector.
  • Page 35 (iv) Optical power does not out. Is the remote Repair interlock con- Please refer the  nector opened? MT9810A Operation  Manual (3.5 Connection of Remote Interlock Connector). Is the optical Repair output modifier Please refer the  switch MT9810A Operation  Manual turned off? (3.6...
  • Page 36 Section 3 Troubleshooting (v) Optical attenuation function does not operate. Repair The plug-in unit faulty. (vi) Optical frequency variable function does not operate. Repair The plug-in unit faulty. (vii) Wavelength switching function does not operate. Repair The plug-in unit faulty. (ix) Internal modulation function does not operate.
  • Page 37 3.4 Overall Troubleshooting (16) MT9810A displays “NO UNIT” Turn OFF the MT9810A power switch. Replace the other plug-in unit, and turn ON the power switch. Repair Does The MT9810A faulty. MT9810A display “NO UNIT” again? Repair Do you use the The plug-in unit faulty.
  • Page 38 Section 3 Troubleshooting (17) MT9810A displays “NO SENSOR” Turn OFF the MT9810A power switch. Replace the other Optical Sensor Head, and turn ON the power switch. Does Repair MT9810A display The Optical Sensor Head SENSOR faulty. again? Repair Sensor Adapter faulty.

  • Page 39: Troubleshooting For Main Frame

    Write strobe for low byte data. Write strobe for high byte data. GND, GNDA, GNDB, GNDC Voltage of the ground. Each ground is separated by noise filter. 3.5.3 Circuit diagram Fig. 3-2 shows overall circuit diagram of MT9810A Optical Test Set. 3-17...
  • Page 40 Section 3 Troubleshooting 3-18...
  • Page 41 3-19 Fig. 3-2 Circuit Diagram...
  • Page 42 3-20...

  • Page 43: Troubleshooting And Repair

    3.5 Troubleshooting for Main frame 3.5.4 Troubleshooting and repair (1) Display doesn’t light. (2) Initial Display doesn’t end. (3) Keys are disabled. (4) RS-232C control is disabled. (5) GPIB control is disabled. (6) Memory backup is abnormal. (7) Remote Interlock Connector/Optical Output Enable key is disable. (8) External Control is disabled.
  • Page 44 Section 3 Troubleshooting (2) Initial Display doesn’t end. Repair MM900001A faulty (3) Keys are disabled. Start Keys Repair disable? MM900001A PCB or MDA86AA or Rubber faulty Remote Control Repair enable? MM900001A faulty Repair MDA86AA or Rubber faulty 3-22...
  • Page 45 3.5 Troubleshooting for Main frame (4) RS-232C control is disabled. Start Remote Control is remote control selected RS-232C? RS-232C. Baud rate Set Baud rate or parity parity bit or stop bit or stop bit. sets correct? RS-232C cable Replace RS-232C is straight type? Cable cross type.
  • Page 46 Section 3 Troubleshooting (5) GPIB control is disabled. Start Remote Control is Set remote control GPIB selected GPIB? Address of MT9810A Set Baud rate or parity is correct? bit or stop bit. Other equipment Release other equipment which is power off from GPIB.
  • Page 47 3.5 Troubleshooting for Main frame (7) Remote Interlock Connector/Optical Output Enable key is disabled. Start Check Voltage of LAND LD Remote Interlock Connector open or Optical Output Enable key off : 0 V Remote Interlock Connector short and Optical Output Enable key on : 5 V Repair MM900002A PCB faulty...
  • Page 48 Section 3 Troubleshooting (8) External Control is disabled. Start Observe TX terminal Repair on MM900001A with MM900001A PCB faulty oscilloscope. Signal generates? Observe pin of External control MM900002A with oscilloscope. Signal generates? Pins of External Repair Connector MM900002A PCB damaged or dirty? faulty 3-26...
  • Page 49 MT9810A Optical Test Set Service Manual Read this manual before using the equipment. Keep this manual with the equipment.
  • Page 50 5-10-27, Minamiazabu, Minato-ku, Tokyo 106-8570 Japan / Phone: 81-3-3446-1111 ANRITSU CORPORATION Document No.: M–W1482BE Printed in Japan...

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