An Aeroflex Company
COM-120C Communications
Service Monitor
Maintenance Manual Supplement
1002-0601-4P0
advancing wireless test
MAINTENANCE MANUAL SUPPLEMENT
COMMUNICATIONS SERVICE MONITOR
COM-120C
PUBLISHED BY
IFR
COPYRIGHT
All rights reserved. No part of this publication may be reproduced, stored in a retrieval
system, or transmitted in any form or by any means, electronic, mechanical, photocopying,
recording or otherwise without the prior permission of the publisher.
IFR 2003
10200 West York / Wichita, Kansas 67215 U.S.A. / (316) 522-4981 / FAX (316) 524-2623
WARNING:
HIGH VOLTAGE EQUIPMENT
THIS EQUIPMENT CONTAINS CERTAIN CIRCUITS AND/OR
COMPONENTS OF EXTREMELY HIGH VOLTAGE POTENTIALS,
CAPABLE OF CAUSING SERIOUS BODILY INJURY OR DEATH. WHEN
PERFORMING ANY OF THE PROCEDURES CONTAINED IN THIS
MANUAL, HEED ALL APPLICABLE SAFETY PRECAUTIONS.
SAFETY FIRST: TO ALL SERVICE PERSONNEL
REFER ALL SERVICING OF UNIT TO QUALIFIED TECHNICAL PERSONNEL.
CASE, COVER OR PANEL REMOVAL
Removing protective covers, casings or panels from this unit exposes the technician to electrical hazards that
can result in electrical shock or equipment damage.
SAFETY IDENTIFICATION IN TECHNICAL MANUAL
This manual uses the following terms to draw attention to possible safety hazards, that may exist when
operating or servicing this equipment.
CAUTION: THIS TERM IDENTIFIES CONDITIONS OR ACTIVITIES THAT, IF IGNORED, CAN RESULT IN
EQUIPMENT OR PROPERTY DAMAGE (e.g., FIRE).
WARNING: THIS TERM IDENTIFIES CONDITIONS OR ACTIVITIES THAT, IF IGNORED, CAN RESULT IN
PERSONAL INJURY OR DEATH.
SAFETY SYMBOLS IN MANUALS AND ON UNITS
CAUTION: Refer to accompanying documents.
AC TERMINAL: Terminal that may supply or be supplied with ac or alternating voltage.
SWITCH OFF: AC line power to the device is OFF.
SWITCH ON: AC line power to the device is ON.
DANGEROUS VOLTAGE: Indicates electrical shock hazard due to high voltage levels.
EQUIPMENT GROUNDING PRECAUTION
Improper grounding of equipment can result in electrical shock.
USE OF PROBES
Check the specifications for the maximum voltage, current and power ratings of any connector on the unit
before connecting it with a probe from a terminal device. Be sure the terminal device performs within these
specifications before using it for measurement, to prevent electrical shock or damage to the equipment.
POWER CORDS
Power cords must not be frayed or broken nor expose bare wiring when operating this equipment.
USE RECOMMENDED FUSES ONLY
Use only fuses specifically recommended for the equipment at the specified current and voltage ratings.
CAUTION: INTEGRATED CIRCUITS AND SOLID STATE DEVICES SUCH AS MOS FETS, ESPECIALLY CMOS
TYPES, ARE SUSCEPTIBLE TO DAMAGE BY ELECTROSTATIC DISCHARGES RECEIVED FROM
IMPROPER HANDLING, THE USE OF UNGROUNDED TOOLS AND IMPROPER STORAGE AND
PACKAGING. ANY MAINTENANCE TO THIS UNIT MUST BE PERFORMED WITH THE FOLLOWING
PRECAUTIONS:
● BEFORE USE IN A CIRCUIT, KEEP ALL LEADS SHORTED TOGETHER EITHER BY THE USE OF
VENDOR-SUPPLIED SHORTING SPRINGS OR BY INSERTING LEADS INTO A CONDUCTIVE
MATERIAL.
● WHEN REMOVING DEVICES FROM THEIR CONTAINERS, GROUND THE HAND BEING USED
WITH A CONDUCTIVE WRISTBAND.
● TIPS OF SOLDERING IRONS AND/OR ANY TOOLS USED MUST BE GROUNDED.
● DEVICES MUST NEVER BE INSERTED INTO NOR REMOVED FROM CIRCUITS WITH POWER
ON.
● PC BOARDS, WHEN TAKEN OUT OF THE SET, MUST BE LAID ON A GROUNDED CONDUCTIVE
MAT OR STORED IN A CONDUCTIVE STORAGE BAG. REMOVE ANY BUILT-IN POWER
SOURCE, SUCH AS A BATTERY, BEFORE LAYING PC BOARDS ON A CONDUCTIVE MAT OR
STORING IN A CONDUCTIVE BAG.
● PC BOARDS, IF BEING SHIPPED TO THE FACTORY FOR REPAIR, MUST BE PACKAGED IN A
CONDUCTIVE BAG AND PLACED IN A WELL-CUSHIONED SHIPPING CONTAINER.
CAUTION
THIS EQUIPMENT CONTAINS PARTS
SENSITIVE TO DAMAGE
BY ELECTROSTATIC DISCHARGE (ESD)
CAUTION: SIGNAL GENERATORS CAN BE A SOURCE OF ELECTROMAGNETIC INTERFERENCE (EMI) TO
COMMUNICATION RECEIVERS. SOME TRANSMITTED SIGNALS CAN CAUSE DISRUPTION AND
INTERFERENCE TO COMMUNICATION SERVICES OUT TO A DISTANCE OF SEVERAL MILES.
USERS OF THIS EQUIPMENT SHOULD SCRUTINIZE ANY OPERATION THAT RESULTS IN
RADIATION OF A SIGNAL (DIRECTLY OR INDIRECTLY) AND SHOULD TAKE NECESSARY
PRECAUTIONS TO AVOID POTENTIAL COMMUNICATION INTERFERENCE PROBLEMS.
CAUTION: KEEP ALL VENT OPENINGS CLEAR AND UNOBSTRUCTED FOR PROPER EQUIPMENT COOLING
AND CONTINUED RELIABILITY. DO NOT OPERATE EQUIPMENT IN THE VERTICAL POSITION ON
PLUSH CARPET OR UPHOLSTERY TO AVOID IMPAIRING THE AIR EXHAUST. WHEN OPERATING
THE TEST SET IN THE NORMAL HORIZONTAL OR TILT BAIL POSITION, MAINTAIN AT LEAST
1.6 INCHES (FOUR CENTIMETERS) OF CLEARANCE BETWEEN THE EQUIPMENT REAR EXHAUST
FAN SCREEN AND OBJECTS OR WALLS.
PREFACE
SCOPE
This Maintenance Manual Supplement, containing maintenance information for the COM-120C,
is intended to be used in conjunction with the COM-120B Maintenance Manual.
ORGANIZATION
The COM-120C Maintenance Manual Supplement is composed of the following:
Paragraph Title Page
SECTION 1 - DRAWINGS
System Block Diagram....................................................................................... 1-3
Composite Assembly ......................................................................................... 1-6
System Interconnect Diagram............................................................................. 1-13
Front Panel Assembly ....................................................................................... 1-16
Front Panel Assembly Interconnect Diagram........................................................ 1-19
SECTION 2 - PARTS LIST
Composite Assembly ......................................................................................... 2-1
i
THIS PAGE INTENTIONALLY LEFT BLANK.
ii
SECTION 1 – DRAWINGS
FIGURE TITLE PAGE
1-1 COM-120C System Block Diagram 1-3
1-2 Composite Assembly (7003-0647-200) 1-6
1-3 System Interconnect Diagram (0000-0647-200) 1-13
1-4 Front Panel Assembly (7005-0647-100) 1-16
1-5 Front Panel Assembly System Interconnect Diagram (0000-0647-100) 1-18
1-1
THIS PAGE INTENTIONALLY LEFT BLANK.
1-2
Figure 1-1 COM-120C System Block Diagram
(Sheet 1 of 3)
1-3
Figure 1-1 COM-120C System Block Diagram
1-4
(Sheet 2 of 3)
Figure 1-1 COM-120C System Block Diagram
(Sheet 3 of 3)
1-5
Figure 1-2 Composite Assembly
1-6
(Sheet 1 of 7)
(7003-0647-200)
Figure 1-2 Composite Assembly
(Sheet 2 of 7)
(7003-0647-200)
1-7
Figure 1-2 Composite Assembly
1-8
(Sheet 3 of 7)
(7003-0647-200)
Figure 1-2 Composite Assembly
(Sheet 4 of 7)
(7003-0647-200)
1-9
Figure 1-2 Composite Assembly
1-10
(Sheet 5 of 7)
(7003-0647-200)
Figure 1-2 Composite Assembly
(Sheet 6 of 7)
(7003-0647-200)
1-11
Figure 1-2 Composite Assembly
1-12
(Sheet 7 of 7)
(7003-0647-200)
Figure 1-3 System Interconnect Diagram
(Sheet 1 of 3)
(0000-0647-200)
1-13
Figure 1-3 System Interconnect Diagram
1-14
(Sheet 2 of 3)
(0000-0647-200)
Figure 1-3 System Interconnect Diagram
(Sheet 3 of 3)
(0000-0647-200)
1-15
Figure 1-4 Front Panel Assembly
1-16
(Sheet 1 of 2)
(7005-0647-100)
Figure 1-4 Front Panel Assembly
(Sheet 2 of 2)
(7005-0647-100)
1-17
Figure 1-5 Front Panel Assembly
System Interconnect Diagram
1-18
(Sheet 1 of 2)
(0000-0647-100)
Figure 1-5 Front Panel Assembly
System Interconnect Diagram
(Sheet 2 of 2)
(0000-0647-100)
1-19
THIS PAGE INTENTIONALLY LEFT BLANK.
1-20
SECTION 2 – PARTS LIST
COMPOSITE ASSEMBLY
(7003-0647-200-A1)
REFERENCE PART
DESIGNATOR NUMBER DESCRIPTION
1 6500-0658-500 MINOR ASSY,CHASSIS
2 6004-6005-400 TY-RAP,4.0 LG
3 4503-8752-600 RETAINER, SPEAKER
4 2803-0375-006 SCREW, 4-40 X 3/8 PPHM
5 2803-0250-006 SCREW,4-40 X 1/4 PPHM
6 2803-0188-003 SCREW,4-40 X 3/16 PFHM
7 2803-0125-006 SCREW,4-40 X 1/8 PPHM
8 2803-0250-003 SCREW,4-40 X 1/4 PFHM
9 1405-0658-400 PANEL,REAR
10 1414-8758-700 COVER, BATTERY
11 2506-0658-700 PLATE,FT PNL FINGERSTOCK
12 1050-0000-354 LOCTITE,HEAVY DUTY ANIT-SEIZE
13 2845-0000-017 FINGERSTOCK, BRIGHT TIN PLATED
14 2850-8757-200 NUT, N CONN SPACER T/R PORT
15 2850-1692-600 SCREW,.340L35-6.25HH,4-40X.410
16 2805-0375-006 SCREW 8-32X3/8 PHIL BIND HD
18 2400-0655-900 LABEL, BATTERY FUSE
19 2400-9931-500 LABEL,S/N,V/W,COM-120C
20 1400-8758-100 BRACKET, FAN DUCT
21 6500-8781-700 MINOR ASSY, BATTERY BOX
22 2803-1188-006 SCREW,4-40 X 1 3/16 PPHMS
23 1400-0657-900 BRACKET, REF FREQ
24 2400-0000-005 INTERNAL OPTIONS TAG
26 2403-0656-000 OVERLAY,REAR PANEL
27 2800-8764-500 SPACER, N CONNECTOR
A1 7010-0631-400 PCB ASSY, MOTHERBOARD
A2 7005-0647-100 MECH ASSY,FRONT PANEL,COM-120C
A3 7010-0631-800 PCB ASSY, PCMCIA INTERFACE
A4 7005-0647-900 MECH ASSY,DIGITAL TRAY
A6 7010-0632-200 PCB ASSY, CONTROLLER COM-120B
A7 7010-8731-300 PCB ASSY, ANALYZER
A8 7010-8731-100 PCB ASSY, BASE BAND
A16 7005-8740-700 MECH ASSY, SYNTHESIZER TRAY
A17 7005-0640-600 MECH ASSY, GENERATOR TRAY
A18 7005-8742-100 MECH ASSY, POWER TERMN
A19 7005-8740-300 MECH ASSY, GEN CONVERTER
A20 7005-8742-300 MECH ASSY, GENERATOR OUTPUT
A21 7010-8733-500 PCB ASSY, ATTENUATOR CONTROL
A22 7005-0645-400 MECH ASSY, POWER SUPPLY
A23 7005-8742-900 MECH ASSY, FAN
A24 7005-8742-900 MECH ASSY, FAN
A27 7005-0641-200 MECH ASSY, AUXILIARY AMP
AT1 2901-8700-110 ATTEN, PRG 110dB 10dB STEP RLY
2-1
COMPOSITE ASSEMBLY
(7003-0647-200-A1) (cont)
REFERENCE PART
DESIGNATOR NUMBER DESCRIPTION
AT1W1 7007-8784-000 WIRE HARN.COMPOSITE ATTENUATOR
J1 2200-0410-100 CONN,ADAPT,F BNC/F SMASTR BHD
LS1 5950-0000-004 SPEAKER, MYLAR 2.25 DIA
LS2 5950-0000-004 SPEAKER, MYLAR 2.25 DIA
TAG#3 6044-1441-860 COAX C HS SL F SMB RA-M SMA ST
TAG#4 6044-1402-950 COAX CONF SL F SMB RA-M SMA RA
TAG#5 6044-1430-680 COAX C HS SL F SMB RA-F SMB RA
TAG#6 6044-1430-950 COAX C HS SL F SMA RA-F SMA RA
TAG#7 6044-1431-900 COAX C HS SL F SMB RA-F SMB RA
TAG#8 6044-1430-570 COAX C HS SL F SMB RA-F SMB RA
TAG#9 6044-1430-450 COAX C HS SL F SMB RA-F SMB RA
TAG#10 6044-1430-850 COAX C HS SL F SMB RA-F SMB RA
TAG#11 6044-1431-160 COAX C HS SL F SMB RA-F SMB RA
TAG#12 6044-1451-400 COAX C HS SL F SMB RA-F SMB RA
TAG#13 6044-1431-280 COAX C HS SL F SMB RA-F SMB RA
TAG#14 6044-1430-950 COAX C HS SL F SMA RA-F SMA RA
TAG#15 6044-1431-160 COAX C HS SL F SMB RA-F SMB RA
TAG#16 6044-1432-330 COAX C HS SL F SMB RA-F SMB RA
TAG#17 6044-1430-450 COAX C HS SL F SMB RA-F SMB RA
TAG#18 6044-1432-200 COAX C HS SL F SMB RA-F SMB RA
TAG#19 6044-1432-330 COAX C HS SL F SMB RA-F SMB RA
TAG#20 6044-1431-350 COAX C HS SL F SMB RA-F SMB RA
TAG#21 6044-1431-350 COAX C HS SL F SMB RA-F SMB RA
TAG#23 6044-1431-350 COAX C HS SL F SMB RA-F SMB RA
TAG#24 6044-1430-350 COAX C HS SL F SMB RA-F SMB RA
TAG#25 6044-1430-290 COAX C HS SL F SMB RA-F SMB RA
TAG#26 6044-1431-350 COAX C HS SL F SMB RA-F SMB RA
TAG#27 6044-1472-780 COAX C HS SL F SMB RA-F SMB RA
TAG#28 6044-1430-850 COAX C HS SL F SMB RA-F SMB RA
TAG#29 6044-1441-110 COAX C HS SL F SMB RA-M SMA ST
W1 6042-8780-800 COAX SR .141 F N ST-M SMA ST
W30 6042-8781-100 COAX SR .086 M SMA ST-M SMA RA
W31 6042-8781-000 COAX SR .086 M SMA ST-M SMA ST
W32 6042-8780-900 COAX SR .086 M SMA RA-M SMA RA
W35 6042-8781-400 COAX SR .086 M SMA ST-M SMA ST
W36 6042-8781-500 COAX SR .086 M SMA ST-M SMA ST
W37 6045-8780-300 RBN CA ASSY, MOTHERBD-ATTEN
W38 6045-8780-400 RBN CA ASSY, MOTHERBD-FT PNL
W39 6045-8780-500 RBN CA ASSY, MOTHERBD-RS232
W40 6045-8780-600 RBN CA ASSY, GPIB
W41 7007-0683-000 W HARN ASSY, MOTHBD-PWR SUPPLY
W43 7007-8783-900 WIRE HARNESS,COMPOSITE SPEAKER
W46 6008-1000-011 WIRE,UL1213,26GA,7X34,WHT/'BLK
2-2
CHINA
Tel:
Fax:
[+86] (10) 6467 2716
[+86] (10) 6467 2821
LATIN AMERICA
Tel:
Fax:
[+1] (972) 899 5150
[+1] (972) 899 5154
EUROPE NORTH
Tel:
Fax:
[+44] (1438) 742200
[+44] (1438) 727601
EUROPE SOUTH
Tel:
Fax:
[+44] (1438) 742200
[+44] (1438) 727601
FRANCE
Tel:
Fax:
[+33] 1 60 79 96 00
[+33] 1 60 77 69 22
GERMANY
Tel:
Fax:
[+49] (8131) 29260
[+49] (8131) 2926130
HONG KONG
Tel:
Fax:
[+852] 2832 7988
[+852] 2834 5364
SCANDINAVIA
Tel:
Fax:
[+45] 9614 0045
[+45] 9614 0047
SPAIN
Tel:
Fax:
[+34] (91) 640 11 34
[+34] (91) 640 06 40
UNITED KINGDOM
Tel:
[+44] (0) 1438 742200 (Stevenage)
[+44] (0) 1703 273722 (Chandlers Ford)
Freephone:
Fax:
[+44] (UK Only) 0800 282 388
[+44] (0) 1438 727601 (Stevenage)
[+44] (0) 1703 254015 (Chandlers Ford)
USA
Tel:
Toll Free:
Fax:
[+1] (316) 522 4981
[+1] (US Only) (800) 835 2352
[+1] (316) 522 1360
As we are always seeking to improve our products, the information in this document
gives only a general indication of the product capacity, performance and suitability,
none of which shall form part of any contract. We reserve the right to make design
changes without notice.
Web www.ifrsys.com
Email info@ifrsys.com
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