Anritsu ms9710b User manual

Fourth Edition
MS9710B/C
Optical Spectrum Analyzer
Service Manual
Measurement Solutions
ANRITSU CORPORATION
Document No.: M-W1285BE-4.0
To ensure that this equipment is used safely,
important safety items are explained in the
MS9710A Optical Spectrum Analyzer Opera-
tion Manual. This manual explains important
service items related to service. Read both the
operation manual and this manual, and keep
both with the equipment.

ii
MS9710B/C
Optical Spectrum Analyzer
Service Manual
19 June 1997 (First Edition)
18 June 2002 (Fourth Edition)
Copyright © 1997-2002, ANRITSU CORPORATION.
All rights reserved. No part of this manual may be reproduced without the prior written permission of the
publisher.
The contents of this manual may be changed without prior notice.
Printed in Japan
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.
Some or all of the symbols may not be used on this equipment. In addition, when drawings are included in this
manual, labels on the equipment may not be shown on them.
Safety Symbols Used in Manual
DANGER
WARNING
CAUTION
Safety Symbols Used on Equipment and/or in Manual
The following safety symbols are used inside or on the equipment near operation locations, and/or in manual to
provide information about safety items and operation precautions. Insure that you clearly understand the
meanings of the symbols and take the necessary precautions BEFORE using the equipment.
This indicates a prohibited operation. The prohibited operation is indicated
symbolically in or near the barred circle.
This indicates an obligatory safety precaution. The obligatory operation is
indicated symbolically in or near the circle.
This indicates warning or caution. The contents are indicated symbolically
in or near the triangle.
This indicates a note. The contents are described in the box.
These indicate that the marked part should be recycled.
This indicates a very dangerous procedure that could result in death or serious
injury if not performed properly.
This indicates a hazardous procedure that could result in death or serious injury
if not performed properly.
This indicates a hazardous procedure or danger that could result in light-to-severe
injury, or loss related to equipment malfunction, if proper precautions are not taken.
Safety Symbols

iii
For safety, do not open the equipment covers.
If repair is required, contact the sales representative, branch office, or agent at the telephone
number and address given in this document or in the equipment operation manual.
Although not recommended by Anritsu Corporation, if it is really imperative to open the covers
for emergency repair, take great care not to touch any dangerous parts. 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.
For Safety

iv
WARNING
This equipment cannot be repaired by the user. DO NOT at-
tempt to open the cabinet or to disassemble internal parts.
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
high-voltage parts in this equipment presenting a risk of se-
vere injury or fatal electric shock to untrained personnel. In
addition, there is a risk of damage to precision parts.
When supplying power to this equipment, connect the acces-
sory 3-pin power cord to a 3-pin grounded power outlet. If a
grounded 3-pin outlet is not available, before supplying
power to the equipment, use a conversion adapter and
ground the green wire, or connect the frame ground on the
rear panel of the equipment to ground. If power is supplied
without grounding the equipment, there is a risk of receiving a
severe or fatal electric shock.
CAUTION
ALWAYS disconnect the power cord from the power outlet
BEFORE changing a fuse. If the cord is not disconnected,
there is a risk of receiving a fatal electric shock.
When changing fuses always use the same fuses as de-
scribed in this manual or of the same rating and characteris-
tics as described on the label attached to the equipment cabi-
net.
The fuse marking T3.15A means a timelag-type fuse. Use a
3.15 A fuse for 100-V systems and a 1.6 A fuse for 200-V sys-
tems.
Repair
WARNING
Changing fuses
CAUTION
For Safety

v
CE Marking
Anritsu affix the CE Conformity Marking on the following product(s) accordance
with the Council Directive 93/68/EEC to indicate that they conform with the EMC
directive of the European Union (EU).
CE Conformity Marking
1. Product Name/Model Name
Product Name: Optical Spectrum Analyzer
Model Name: MS9710B/C
2. Applied Directive
EMC : Council Directive 89/336/EEC
Safety: Council Directive 73/23/EEC
3. Applied Standards
Emission: EN61326: 1997/A1: 1998 (Class A)
Immunity: EN61326: 1997/A1: 1998 (Annex A)
Performance Criteria*
IEC61000-4-2 (ESD) B
IEC61000-4-3 (EMF) A
IEC61000-4-4 (Burst) B
IEC61000-4-5 (Surge) B
IEC61000-4-6 (CRF) A
IEC61000-4-8 (RPFMF) A
IEC61000-4-11 (V dip/short) B
*: Performance Criteria
A: Durring testing nomal performance within the specification
limits
B: During testing, temporay degradation, or loss of function or
perfomance which is self-recovering
Harmonic current emissions:
EN61000-3-2: 1995/A2: 1998 (Class A)
LVD: EN61010-1: 1993/A2: 1995 (Installation Category II, Pollution Degree 2)

vi
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.
Example 1: An example of the single fuse is shown below:
Fuse Holder
F
U
S
E
Example 2: An example of the double fuse is shown below:
Fuse Holders
F
U
S
E
F
U
S
E

I
This manual is written for service personnel trained by Anritsu Service Training
Course and explains how to service the Anritsu MS9710B/C Optical Spectrum Ana-
lyzer, how to install the optional light sources, how to install the latest software ver-
sion, and how to troubleshoot faults. It also explains repair by exchanging modules
but does not describe parts-level repair of modules.
Refer to the operation manual for a description of the operation methods, how to test
the performance and for the periodic calibration procedures.
About This Manual

II
For Safety ....................................................... iii
About This Manual ........................................ I
Section 1 Outline .......................................... 1-1
Upgrading software................................................................. 1-2
Installing optional light sources............................................... 1-2
Troubleshooting and repairing faults ...................................... 1-3
Section 2 Name and Function of Each Part 2-1
2.1 Part Names................................................................... 2-2
2.2 Removing Covers ......................................................... 2-7
2.2.1 Removing Top Cover ..................................... 2-7
2.2.2 Removing Left Side Cover ............................. 2-8
2.2.3
Removing Right Side Cover (See the above figure.) ... 2-8
2.2.4 Removing Rear-Panel Cover 1 ...................... 2-9
2.2.5 Opening Printer Chassis ................................ 2-10
2.2.6 Removing Bottom Cover................................ 2-11
2.3 Explanation of Modules ................................................ 2-12
2.3.1 Control Module (A1 and A13) ........................ 2-12
2.3.2 Motor Drive (A2)............................................. 2-13
2.3.3 Front Panel (A3)............................................. 2-13
2.3.4 Measure CPU and Optical Module (A4 and A6) .. 2-13
2.3.5 Interface (A5) ................................................. 2-14
2.3.6 Optional White Light Module (A7) .................. 2-14
2.3.7 Optional Lamp Module (A8) ........................... 2-14
2.3.8 Optional Reference Light Module (A9)........... 2-14
2.3.9 Optional Reference Module (A10) ................. 2-14
2.3.10 Power (A11) ................................................. 2-14
2.3.11 Motherboard (A12) ....................................... 2-15
2.3.12 Power Unit (E1)............................................ 2-15
2.3.13 Fan (E2) ....................................................... 2-15
2.3.14 FDD (E3) ...................................................... 2-15
2.3.15 Printer Driver (E4) ........................................ 2-15
2.3.16 Printer (E5)................................................... 2-15
2.3.17 LCD (H1) ...................................................... 2-15
Section 3 Maintenance Mode..................... 3-1
3.1 Role of Maintenance Mode and Start Method .............. 3-2
3.1.1 Role of Maintenance Mode ............................. 3-2
3.1.2 Starting Maintenance Mode ............................ 3-2
3.2 Maintenance Operations .............................................. 3-3
3.2.1 Updating Software Version ............................. 3-3
3.2.2 Initializing Backup RAM .................................. 3-4
3.2.3 Initializing Timer ............................................. 3-4
3.2.4 Adding Options ............................................... 3-5
3.2.5 Setting Equipment Version Display ................ 3-6
3.2.6 Other Special Functions ................................. 3-6
3.3 List of Function Keys .................................................... 3-7
Table of Contents

III
Section 4 Installing Optional Light Sources 4-1
4.1 Outline .......................................................................... 4-2
4.2 White Light Source ....................................................... 4-2
4.2.1 Parts............................................................... 4-2
4.2.2 Installing ......................................................... 4-5
4.2.3 Setting ............................................................ 4-7
4.3 Wavelength Reference Light Source ............................ 4-8
4.3.1 Parts............................................................... 4-8
4.3.2 Installing ......................................................... 4-11
4.3.3 Settings .......................................................... 4-14
Section 5 Troubleshooting .......................... 5-1
5.1 General......................................................................... 5-3
5.2 Error Message at Initial Screen .................................... 5-3
5.3 Abnormal Data I/O ........................................................ 5-4
5.4 Abnormal Measurement ............................................... 5-4
5.5 Abnormal Performance................................................. 5-5
5.6 Abnormal Light Source Option ..................................... 5-5
Section 6 Repair.......................................... 6-1
6.1 Removing and Testing Each Module............................ 6-2
6.1.1 Control Module ............................................... 6-2
6.1.2 Motor Drive Module......................................... 6-3
6.1.3 Panel Module .................................................. 6-4
6.1.4 Measure CPU/Optical Module ........................ 6-6
6.1.5 Interface Module ............................................. 6-8
6.1.6 White Light Module (Option) ........................... 6-9
6.1.7 Lamp Module (Option) .................................... 6-10
6.1.8 Reference Light Module (Option).................... 6-12
6.1.9 Reference Module (Option) ............................ 6-13
6.1.10 Power Module ............................................... 6-15
6.1.11 Motherboard Module..................................... 6-16
6.1.12 Power Unit Module ....................................... 6-17
6.1 13 Fan Module ................................................... 6-19
6.1.14 FDD Module.................................................. 6-19
6.1.15 Printer Driver Module .................................... 6-20
6.1.16 Printer Module............................................... 6-21
6.1.17 LCD Module ................................................. 6-22
6.1.18 Exchange of Optical Connector Procedure .. 6-24
6.2 Factory Repair .............................................................. 6-28
Appendix A Software Update..................... A-1
Appendix B List of Options........................ B-1
Table of Contents

IV.

1-1
Section 1 Outline
This section outlines the maintenance procedures,
Upgrading software ....................................... 1-2
Installing optional light sources...................... 1-2
Troubleshooting and repairing faults ............. 1-3

Section 1 Outline
1-2
The MS9710B/C Optical Spectrum Analyzer should be maintained by an
Anritsu-trained service engineer. The maintenance work includes the following:
• Upgrading software
• Installing optional light sources
• Troubleshooting and repairing faults
Removal of the covers and modules is explained in Section 2.
Upgrading software
The software for operating this analyzer is stored on floppy disk and can be up-
dated. To update the software, first, check the current software version by setting
the equipment to the Maintenance Mode. Detailed description of the Mainte-
nance Mode is provided in Section 3.
Installing optional light sources
Optional light sources listed in Table 1-1 can be installed in this analyzer. Table
1-1 is in common at the MS9710B and the MS9710C. The installation method is
described in Section 4.
Table 1-1 Optional Light Sources
Name OptionNo. Diagram
White Light Source 02 W4Y29463
Wavelength Reference and
SLD Light Source 03 W4Y29464
SLD Light Source 04 W4Y30983
Wavelength Reference Light
Source 05 W4Y30983B

1-3
Troubleshooting and repairing faults
This analyzer is composed of the 17 exchangeable modules listed in Table 1-2. If
the analyzer develops a fault, it can be repaired simply by changing modules. The
codes on the right side of Table 1-2 and Table 1-3 corresponds to the codes in the
circuit diagram and table of constants.
Table 1-2 MS9710B Exchangeable Modules
No. ModuleName Code
1 Control A1
2 Motor Drive A2
3 Front Panel A3
4 Optical Module with Measure CPU A6
5 Interface A5
6 White Light Source option 02
7Wavelength Reference and SLD
Light Source option 03
8 SLD Light Source option 04
9 Wavelength Reference Light Source option 05
10 Power A11
11 Motherboard A12
12 Control 2 A13
13 Power Unit E1
14 FDD E3
15 Printer Driver E4
16 Printer E5
17 LCD H1

Section 1 Outline
1-4.
Table 1-3 MS9710C Exchangeable Modules
No. ModuleName Code
1 Control A1
2 Motor Drive A2
3 Front Panel A3
4 Optical Module with Measure CPU A6
5 Interface A5
6 White Light Source option 02
7Wavelength Reference and SLD
Light Source option 03
8 SLD Light Source option 04
9 Wavelength Reference Light Source option 05
10 Power A11
11 Motherboard A12
12 Power Unit E1
13 FDD E3
14 Printer Driver E4
15 Printer E5
16 LCD H1
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.

2-1
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.
2.1 Part Names ........................................ 2-2
2.2 Removing Covers............................... 2-7
2.2.1 Removing Top Cover ......................... 2-7
2.2.2 Removing Left Side Cover ................. 2-8
2.2.3 Removing Right Side Cover............... 2-8
2.2.4 Removing Rear-Panel Cover 1 .......... 2-9
2.2.5 Opening Printer Chassis .................... 2-10
2.2.6 Removing Bottom Cover .................... 2-11
2.3 Explanation of Modules...................... 2-12
2.3.1 Control Module (A1 and A13)............. 2-12
2.3.2 Motor Drive (A2)................................. 2-13
2.3.3 Front Panel (A3)................................. 2-13
2.3.4
Measure CPU and Optical Module (A4 and A6) ... 2-13
2.3.5 Interface (A5)...................................... 2-14
2.3.6 Optional White Light Module (A7) ...... 2-14
2.3.7 Optional Lamp Module (A8) ............... 2-14
2.3.8 Optional Reference Light Module (A9) 2-14
2.3.9 Optional Reference Module (A10)...... 2-14
2.3.10 Power (A11) ....................................... 2-14
2.3.11 Motherboard (A12)............................. 2-15
2.3.12 Power Unit (E1) ................................. 2-15
2.3.13 Fan (E2) ............................................. 2-15
2.3.14 FDD (E3)............................................ 2-15
2.3.15 Printer Driver (E4) .............................. 2-15
2.3.16 Printer (E5) ........................................ 2-15
2.3.17 LCD (H1)............................................ 2-15

Section 2 Name and Function of Each Part
2-2
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
No. ModuleName Figure
1 Control Fig. 2-4 (6)
2 Motor Drive Fig. 2-4 (4)
3 Front Panel Fig. 2-5 (1)
4Measure CPU Fig. 2-4 (7)
Optical Module Fig. 2-3 (4)
5 Interface Fig. 2-3 (3)
6 White Light Module (Option) Fig. 2-3 (6)
7 Lamp Module (Option) Fig. 2-3 (5)
8 Reference Light Module (Option) Fig. 2-3 (6)
9 Reference Module (Option) Fig. 2-3 (5)
10 Power Fig. 2-4 (5)
11 Motherboard Fig. 2-6 (1)
12 Power Unit Fig. 2-3 (7)
13 Fan Fig. 2-2 (8)
14 FDD Fig. 2-1 (4)
15 Printer Driver Fig. 2-3 (1)
16 Printer Fig. 2-3 (2)
17 LCD Fig. 2-5 (2)

2-3
Data Entry
Marker
Optical Input
Max +10dBm(ATT Off)
Max +20dBm(ATT On)
Sweep
Memory
AB
OutputWavelength Peak
Level
MS9710A
OpticalSpectrumAnalyzer
0.6-1.75um
Printer
(1) Printer
(2) Rear Panel
(3) Front Panel
(4) FDD(5) Power Switch
(6) Side Handle
Fig. 2-1 Front View
(1) GPIB Interface Connector
(4) SLD Light Source Output Port 1 (Option)
or
White Light Source Output Port (Option)
(5) Printer Cover Button
(7) AC Power Supply Input Connector
(6) Frame Ground
(8) Fan
(9) Reference Light Source Output Port 2 (Option)
(2) RS-232C Interface Connector
(3) External Trigger input Connector
(10) Monitor Output Connector MS9710B (Option)
MS9710C (Standard)
Monitor output
CLASS 1 LASER PRODUCT
Fig. 2-2 Rear View

Section 2 Name and Function of Each Part
2-4
(4) Optical Module(3) Interface Module(1) Printer Driver Module
(2) Printer Module
(6) White Light Module or
Reference Light Module
(7) Power Unitt Module
(5) Lamp Module or
Reference Module
Fig. 2-3 Top Cover Open
(3) Optical Module
(2) Interface Module
(1) Printer Chassis
(4) Motor Drive Module
(7) Measurement Module
(5) Power Module
(6) Control Module
Fig. 2-4 Printer Chassis Open

2-5
(1) Panel Module
Protective Cover
(2) LCD Module
1
2
3
4
Fig. 2-5 MS9710B Panel/LCD Modules
(1) Panel Module
(2) LCD Module
1
2
3
4
Fig. 2-6 MS9710C Panel/LCD Modules

Section 2 Name and Function of Each Part
2-6
(2) FDD Module
(1) Mother Board Module
Fig. 2-7 Motherboard