IBM 3745 Communication Controller
Models 130 to 17A
IBM
Maintenance Information Procedures
SY33-2070-09
IBM 3745 Communication Controller
Models 130 to 17A
IBM
Maintenance Information Procedures
SY33-2070-09
Note!
Before using this information and the product it supports, be sure to read the general information under “Notices”
on page xv.
Tenth Edition (June 1997)
The information contained in this manual is subject to change from time to time. Any such changes will be reported in subsequent
revisions.
Changes have been made throughout this edition, and this manual should be read in its entirety.
Order publications through your IBM representative or the IBM branch office serving your locality. Publications are not stocked at the
address given below.
A form for readers' comments appears at the back of this publication. If the form has been removed, address your comments to:
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When you send information to IBM, you grant IBM a non-exclusive right to use or distribute the information in any way it believes
appropriate without incurring any obligation to you.
Copyright International Business Machines Corporation 1989, 1997. All rights reserved.
Note to U.S. Government Users — Documentation related to restricted rights — Use, duplication or disclosure is subject to
restrictions set forth in GSA ADP Schedule Contract with IBM Corp.
MAP 3230: Console Link Procedure....................... 2-6
3745 Line Adapter MAPs............................... 2-7
iv3745 Models 130 to 17A: MIP
MAP 3500: Activate/Deactivate Line Problem or Line Errors on the TSS .. 2-7
MAP 3520: Activate/Deactivate Ring Problems or Ring Errors on the TRSS 2-8
MAP 3530: Activate/Deactivate Line Problems or Line Errors on the
References in this publication to IBM products, programs, or services do not imply
that IBM intends to make these available in all countries in which IBM operates.
Any reference to an IBM product, program, or service is not intended to state or
imply that only IBM's product, program, or service may be used. Any functionally
equivalent product, program, or service that does not infringe any of IBM's intellectual property rights may be used instead of the IBM product, program, or service.
Evaluation and verification of operation in conjunction with other products, except
those expressly designated by IBM, is the user's responsibility.
IBM may have patents or pending patent applications covering subject matter in
this document. The furnishing of this document does not give you any license to
these patents. You can send license inquiries, in writing, to the IBM Director of
Licensing, IBM Corporation, 500 Columbus Avenue, Thornwood, New York 10594,
U.S.A.
European Union (EU) Statement
This product is in conformity with the protection requirements of EU Council Directive 89/336/EEC on the approximation of the laws of the Member States relating to
electromagnetic compatibility. IBM can not accept responsibility for any failure to
satisfy the protection requirements resulting from a non-recommended modification
of the product, including the fitting of non-IBM option cards.
Electronic Emission Notices
Federal Communications Commission (FCC) Statement
Note: This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause
harmful interference, in which case the user will be required to correct the interference at his own expense.
Properly shielded and grounded cables and connectors must be used in order to
meet FCC emission limits. IBM is not responsible for any radio or television interference caused by using other than recommended cables and connectors or by
unauthorized changes or modifications to this equipment. Unauthorized changes or
modifications could void the user's authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
Copyright IBM Corp. 1989, 1997 xv
Industry Canada Compliance Statement
This Class A digital apparatus meets all requirements of the Canadian InterferenceCausing Equipment Regulations.
Avis de conformité aux normes d'Industrie Canada
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement
sur le matériel brouilleur du Canada.
Japanese Voluntary Control Council For Interference (VCCI) Statement
This equipment is in the 1st Class category (information equipment to be used in
commercial and/or industrial areas) and conforms to the standards set by the Voluntary Control Council for Interference by Information Technology Equipment aimed
at preventing radio interference in commercial and industrial areas.
Consequently, when used in a residential area or in an adjacent area thereto, radio
interference may be caused to radios and TV receivers, and so on.
Read the instructions for correct handling.
Korean Communications Statement
Please note that this device has been approved for business purpose with regard to
electromagnetic interference. If you find this is not suitable for your use, you may
exchange it for a non-business one.
New Zealand Radiocommunications (Radio) Regulations
Attention: This is a Class A product. In a domestic environment this product may
cause radio interference in which case the user may be required to take adequate
measures.
Trademarks and Service Marks
The following terms, denoted by an asterisk (*), used in this publication, are trademarks or service marks of IBM Corporation in the United States or other countries:
ESCONIBMOS/2
NetViewRETAIN
The following terms, denoted by a double asterisk (**), used in this publication, are
trademarks of other companies:
HayesHayes Microcomputer Products, Inc.
Tektronix Tektronix, Incorporated.
xvi3745 Models 130 to 17A: MIP
Safety
Product Safety Information
General Safety
This product meets IBM safety standards.
For more information, see the following manual:
IBM 3745 Communication Controller All Models
IBM 3746 Nways Multiprotocol Controller Models 900 and 950
Safety Information
Service Inspection Safety Procedures
, GA33-0400.
Service Inspection Safety Procedures for the 3745, 3746-900, and Controller Expansion English
Sicherheitsüberprüfungen für IBM 3745, 3746-900 und die Erweiterung der Steuereinheit Deutsch
xviii
xxxi
xliii
Copyright IBM Corp. 1989, 1997 xvii
Service Inspection Safety Procedures for the 3745, 3746-900, and
Controller Expansion
Important
This procedure addresses the 3745, 3746-900, and the controller expansion. If one of these machines
is not present, ignore the statement concerning this machine in the following procedure.
Introduction
A safety inspection procedure for the 3745, 3746-900, and controller expansion should be performed:
When it is inspected for an IBM agreement
When IBM service is requested and no service has recently been performed by IBM
When an alterations and attachments review is performed
When changes have been made to the equipment that might affect its safety.
If the inspection indicates unacceptable safety conditions, the conditions must be corrected before IBM
services the machine.
Note: The correction of any unsafe condition is the responsibility of the owner of the equipment.
Safety
The 3745, 3746-900, and controller expansion areas and functions checked through these procedures are:
1. External covers
2. Safety labels
3. Safety covers and shields
4. Grounding (earthing)
5. Circuit breaker and protector rating
6. Input power voltage
7. Power control switch
8. Power ON indicator.
Note: The 3746-900 is powered ON and OFF through the basic 3745 frame, from a host, locally, or from
the service processor.
Hazardous voltages are still present in some areas of the 3745 and the 3746-900 when power is
OFF.
Steps 1 through 6 must be performed after power OFF as follows:
CB1s are switched OFF on the 3745 and 3746-900.
All equipment installed in the controller expansion (if present) is powered OFF.
Power supplies for the 3745, 3746-900, and controller expansion at customer's premises are
switched OFF.
Do not remove the power cord and ground strap .A/ of the controller expansion in order to maintain
the ground protection (see Figure 0-2 on page xxi, Figure 0-3 on page xxii, Figure 0-4 on page xxiii,
or Figure 0-5 on page xxiv).
1External Covers
Check that:
They are all present on the 3745, 3746-900, and controller expansion.
They are locked with two kinds of locks: flat blade screw for the IBM access area and hex head
for the customer access area (refer to the
17A, Parts Catalog
They can be fully opened.
, S135-2012).
xviii3745 Models 130 to 17A: MIP
IBM 3745 Communication Controller Models 130 to
Safety
Appropriate service clearance and access are provided around the frames with external covers
opened.
Leave all external covers opened to allow further safety inspection steps.
2Safety Labels
Check that:
All the safety labels are at the places indicated by letters in “Safety Label Locations” on
page lvii.
Each label is of the model corresponding to the letter as shown in “3745/3746-900 Safety Label
Identifications” on page lx.
3 Safety Covers and Shields
Referring to the FRU location (Chapter 4), check that:
All the safety covers are present and secured with screws.
All the voltage terminal boards (TBs) are protected by a plastic shield screwed on top of the TB.
4Grounding (Earthing)
Note
In this book, "ground" means that the equipment must be connected to the earth.
a Grounding on the 3745
Refer to YZ110 for grounding jumper/contact locations..
Check that:
Electrical continuity is assured between the frame ground and the terminals indi-
cated on the ground distribution diagrams.
Electrical continuity is assured between the 3745, frame grounds, and to the premises
grounding system, through the 3745 power cord.
b Grounding on the 3746-900 and Controller Expansion to the Premises Grounding
System
Electrical continuity is assured between their frame ground and premises grounding
system through their power cords.
The 3746-900 is grounded to the 3745 via the power control cable (see Figure 0-1 on
page xx).
For the controller expansion, an additional ground wire .A/ is also used (see Figure 0-2 on
page xxi, Figure 0-3 on page xxii, Figure 0-4 on page xxiii, or Figure 0-5 on page xxiv).
1 3745/3746-900 Power Control Cable
Check that the power ground cable is correctly connected in the 3745 .D/ and in the
3746-900 .C/.
Safety xix
Safety
Figure 0-1. 3745/3746-900 Power Control Cable Routing
Notes:
a) .D/Lock washer (PN 17G5853) and nut (PN 1622404).
b) .C/Screw (PN 61F4511), star washer (PN 17G5852), and lock washer
(PN 1622318).
2 Controller Expansion Ground Wire Cable
If you have only one controller expansion installed, check that the ground wire .A/ is
installed (see Figure 0-2 on page xxi).
If you have several controller expansions installed, check that the ground wires .A/
are installed according to your configuration (see Figure 0-3 on page xxii,
Figure 0-4 on page xxiii, or Figure 0-5 on page xxiv).
xx3745 Models 130 to 17A: MIP
Safety
Figure 0-2. Ground Wire Connection on Controller Expansion
Safety xxi
Controller
Expansion
Safety
B
B
B
Detail
Screw M5
Lock Washer
Star Washer
A
Figure 0-3. Ground Wire Connection Between Attached Controller Expansions
A
To Permanent Connection
of Building Ground
(Protective Earthing)
B
A
xxii3745 Models 130 to 17A: MIP
Safety
Figure 0-4. Ground Wire Connection Between Controller Expansions at Less than Six Meters
Safety xxiii
Safety
Figure 0-5. Ground Wire Connection Between Controller Expansions at More than Six Meters
Notes:
a) .A/Ground wire (PN 58G5691)
b) .B/Screw (PN 61F4513), star washer (PN 1622347) or (PN 17G5853), and lock
washer (PN 1622319).
3 ac/dc Power Cable Ground Wire
Check the mainline ac/dc power cable for damaged or burned pins and broken insu-
lation.
Measure the resistance of the disconnected mainline ac/dc power cable from ground
pin on one end to the ground pin on the other end.
The measurement should be 0.1 ohm or less.
xxiv3745 Models 130 to 17A: MIP
Safety
Ground Pin
Figure 0-6. Ground Pin on Mainline ac/dc Power Cable
c Internal Grounding in the 3746-900 and Controller Expansion
On the 3746-900
Check that electrical continuity is assured between the LCB housing and 3746-900 frame,
if LCBs are present. This operation must be performed before any network connection.
On the Controller Expansion
Check that electrical continuity is assured between each machine installed in the controller
expansion (service processor, network node processor, modem, optical disk drive, and so
on) and the ground pin of the ac outlet distribution box (see Figure 0-7).
Check that electrical continuity is assured between the ground pin of the ac outlet distrib-
ution box and the controller expansion mount frame.
Ground Pin
Figure 0-7. Ground Pin of the Controller Expansion ac Outlet Distribution Box
Check that electrical continuity is assured between the LCB housing and the controller
expansion frame, if LCBs are present. This operation must be performed before any
network connection (see Figure 0-8 on page xxvi).
Note: All the previous measurements should indicate 0.1 ohm or less.
d Grounding of Line Connection Boxes (LCBs) not Installed in the 3746-900 or Controller
Expansion
Check that electrical continuity is assured between the LCB housing and the premises
grounding system.
There are two ways to ensure proper grounding of the LCB depending on where it is installed:
1) Grounding is ensured by the four screws which secure the LCB on the rack if the frame of
the rack is connected to the premises ground system.
Safety xxv
Figure 0-8. LCB Grounding Via Screws
Safety
Screws for
Grounding
Front View
2) Grounding is ensured by a wire connected from the LCB to the premises ground system.
BottomView
Ground
Wire
ToPremises
Grounding
System
Figure 0-9. LCB Grounding Via Ground Wire
IBM does not provide this wire. In order to ensure correct grounding, this ground wire
must be made using a wire AWG 12 (minimum 2.5 square millimeters).
Screw: 5 mm in diameter, length from 6 to 10 mm (refer to Figure 0-10 on page xxvii).
Connection of Ground Wire to LCB
xxvi3745 Models 130 to 17A: MIP
Safety
Figure 0-10. Ground Wire Connection
This operation must be performed before any network connection.
Note: All the previous measurements should indicate 0.1 ohm or less.
eBuilding Grounding
Check that there is less than 1 V ac between the metal housings of plugs, connec-
tors, receptacles, and so on., and any grounded point in the building. This can be
any grounded metal structure, such as the stanchions of a raised floor (if they are
electrically connected to building ground), a metal water pipe, building steel, and so
on.
Notes:
1) When probing a painted metal part, ensure that the meter probe tip penetrates the
paint.
2) Also check plugs of incoming cables.
5 Circuit Breaker and Protector Rating
Refer to Table 0-4 on page xxx for CB and CP locations.
Check that:
All CBs and CPs in the 3745 and 3746-900 are rated at the indicated value in Table 0-4 on
page xxx. If the rating is not indicated, check the part number against one of the following:
–
IBM 3745 Communication Controller Models 130 to 17A, Parts Catalog
–
IBM 3746 Expansion Unit Model 900, Parts Catalog
–
IBM 3746 Nways Multiprotocol Controller Models 900 and 950, Parts Catalog
The fuses in the controller expansion ac outlet distribution box must be 7 A, 250 V slow
(PN 58G5782).
, S135-2013
, S135-2012
, S135-2015.
6 Input Power Voltage
The power rating plate indicates the voltage range available (200/220/240) and the frequency
(50/60 Hz).
3745 Input Power voltage
The voltage label (label J) indicates the input voltage for which the 3745 is wired. This information
must be in accordance with Switch 1 on PS2.
Performing a power conversion Inspection.
A power conversion inspection must be performed on any 3745 Communication Controller that
has been converted from 50 Hz to 60 Hz, or from 60 Hz to 50 Hz.
The following is used only for the primary power box. Refer to Figure 4-1 on page 4-3 for
location.
Check Table 0-1 on page xxviii for the correct part numbers for the specified 50 Hz or 60 Hz
use. In case of discrepancy, contact your support structure.
Safety xxvii
Table 0-1. Part Numbers
FrequenciesPart Numbers
50 HzPN 03F4745
60 HzPN 03F4569
Refer to Figure 0-21 on page lvii for voltage label and power rating plate location, and to page
YZ060, sheet 1 for the PS2 box voltage adjustment by SW1.
Check that:
The power rating plate and the voltage label of the 3745 are consistent with the frequency and
the voltage measured at the customer's power supply. If they are inconsistent, inform your
branch office.
3746-900 Input Power voltage
The power rating plate indicates the voltage range available (200/220/240) and the frequency
(50/60&rlb.Hz).
The 3746-900 voltage range is 200/220/240.
Check that:
The power rating plate of the 3746-900 is consistent with the frequency and the voltage meas-
ured at the customer's power supply. If they are inconsistent inform your branch office. Refer to
“3745/3746-900 Safety Label Identifications” on page lx for the power rating plate location.
dc Input Voltage
For dc input, the customer's voltage must be within -40.0 V to -60.0 V. There is no adjustment
for the optional dc input.
ac Input Voltage
For ac input, the customer's voltage must be within 180 V to 260 V.
Adjustment of the input voltage can be done according to the customer voltage on TB1 of the
transformers located at the rear of the 3746-900.
Safety
Table 0-2. ac Input Adjustment
Voltage
Measured
From 180
to 210 Volts
From 210
to 230 Volts
From 230
to 260 Volts
Important Note
:
Wire
Position
TB1-2200/208 Volts
TB1-3220 Volts
TB1-4240 Volts
Nominal
Voltage
Since the 3745 can be remotely powered ON, all the following procedures must be performed with the
power control function on the 3745 and the 3746-900 control panel set to local mode.
Controller Expansion Input Power Voltage
The power rating plate indicates the voltage range available (200/240) and the frequency (50/60 Hz).
Check that the power rating plate of the controller expansion is consistent with the frequency and the
voltage measured at the customer's power supply. If they are inconsistent inform your branch office.
Refer to “Controller Expansion Label Location” on page lxii for power rating plate location.
7 Test of the Emergency Power OFF
xxviii3745 Models 130 to 17A: MIP
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