IBM SY27-0345-06 2 3, 4

System Board

Refer to “Handling Static-Sensitive Devices” on page 4-2 before removing or

installing a system board.

Removing the System Board for 12x Models

Figure 4-5. Cables Attached to the System Board (12x Models)

1Remove the power supply cable connector by pulling out the retaining clips

with your fingers or a screwdriver and then rocking the connector from front

to back as you pull up.

2Remove the fan cable by rocking it from front to back as you pull up.

3To remove the LED panel cable, use a screwdriver on either side of the con-

nector to lift the blue retaining latch. Pull the cable from the latch. Note as

you remove this cable that the blue coloring on the end of the cable faces the

blue latch.

4Remove the system board retainer screws using a nut driver. Figure 4-6 on

page 4-6 and Figure 4-7 on page 4-6 show the locations of the retainer

screws for system boards that do and do not support ISDN.

Chapter 4. Removal and Replacement Procedures 4-5

Contents

Main Page Page Seventh Edition (November 1998) Contents Page Figures vi About This Manual Who Should Read This Manual Page Library Description Page Library Ordering Information Obtaining Softcopy Information xii IBM Networking Systems Softcopy Collection Kit IBM Networking Systems Softcopy Collection Kit. System Library Subscription Service Chapter 1. Models, Indicators, and FRUs Models of the IBM 2210 Figure 1-4. Model127 1-2 Figure 1-5. Model128 Figure 1-6. Model14T Figure 1-8. Model24E Figure 1-9. Model24M Figure 1-10. Model 24M with an Optional Adapter Installed Indicators on the IBM 2210 1-4 Page FRUs in the IBM 2210 x4x Models 1-6 Figure 1-16. View without Cover (24x Models) Cables in the IBM 2210 12x Models Figure 1-17. View of Cable Connections (12x Models) Cables in the IBM 2210 x4x Models Page Chapter 2. Problem Determination MAP 0100: Start 2-2 Table 2-1. Initial Symptoms MAP 0110: Communication Problem MAP 0120: LEDs Indicate a Fault 2-4 system LEDs MAP 0120 (continued) 2-6 Page MAP 0130: No LEDs Are On 2-8 MAP 0140: One LED is Not Working 2-10 MAP 0150: Intermittent Problem Isolation MAP 0150 (continued) 2-12 MAP 0160: Service Port on 12x Model Is Not Working MAP 0170: Primary Service Port on 14T or 24x Model Is Not Working 2-14 MAP 0180: Second Service Port Is Not Working MAP 0180 (continued) 2-16 MAP 0190: Service Terminal Display Unreadable MAP 0190 (continued) 2-18 MAP 0190 (continued) 2-20 MAP 0200: Optional Adapter or Dial Access Adapter Is Not Working MAP 0200 (continued) 2-22 MAP 0210: Verify Operation Page Chapter 3. Diagnostics Diagnosing Hardware Problems 1 2 3 Extended POST 1 2 3 4 3-2 Immediately After Attaching an ASCII Terminal.: 5 6 7 3 4 5 Diagnostic Utilities WAN/LAN Wrap Menu System Extended Diagnostics System Diagnostics 3-4 Service Aids Display Diagnostic Log Display Vital Product Data (VPD) Chapter 4. Removal and Replacement Procedures Electrical Safety for IBM Service Representatives Handling Static-Sensitive Devices 4-2 1 Page Page System Board Removing the System Board for 12x Models 2 3 4 Page Page Page 8 9 10 Removing the System Board for 14T and 24x Models Page Page Page Page 7 4-14 8 9 10 11 12 Single In-line Memory Module (SIMM) Removing the Dynamic Random Access Memory (DRAM) SIMM for 12x Models Page Page Page Page Page Replacing the Power Supply for 12x Models 1 Page 2 Page Replacing the Power Supply for 14T and 24x Models 1 2 3 4 5 6 7 8 Page LED Panel Removing the LED Panel for 12x Models 1 2 3 Page Page Replacing the LED Panel for 14T and 24X Models 4-32 1 2 3 Installing An Optional Adapter in Models 14T and 24x Page Page Page Page Page Page Page Page Page Upgrading the 4-Port Dial Access Adapter Using the 4-Port Dial Access Modem Card Feature 4-42 Removing the 4-Port Dial Access Modem Card Page Appendix A. Access Methods and Attaching an ASCII Terminal Access Methods A-2 not A-4 ASCII Terminals and Setup Attributes Setup Attributes IBM 3101 Setup Attributes IBM 3151 Setup Attributes IBM 3161 Setup Attributes A-6 Configuration Methods Software Users Guide for A-8 Guide for Multiprotocol Routing Services Multiprotocol Routing Services Appendix B. Service Kit Page n Appendix C. Parts Listing n Assembly Assembly 1: Final Assembly 12x Models Assembly 1: (continued) C-4 Page Assembly 2: Final Assembly, 14T Model C-6 Assembly 3: Final Assembly 24x Models C-8 Assembly 4: Final Assembly Adapter Enablement Feature C-10 Assembly 5: Cable Assemblies C-12 Page Assembly 6: Final Assembly, IBM 2210, Models 1Sx and 1Ux Page Page Appendix D. Notices Industry Canada Class A Emission Compliance Statement D-2 Notices for Models 1Sx and 1Ux Federal Communications Commission (FCC) Statement Industry Canada Class B Emission Compliance Statement Avis de conformit aux normes d'Industrie Canada Notices for All Models Japanese Voluntary Control Council for Interference (VCCI) Statement European Community (CE) Mark of Conformity Statement D-4 Notice about Lithium Battery U.K. Safety Approval Telecommunication Notices FCC Part 68 Compliance Information Industry Canada Information D-6 Caution: Safety InformationRead This First, Safety Notices PAS OP! VeiligheidsinstructiesLees dit eerst, Gevaar: Achtung: SicherheitsinformationenBitte zuerst lesen, ATTENTION: Consignes de scuritA lire au pralable, Danger: Attenzione: Informazioni di sicurezza Prime informazioni da leggere Vorsicht: D-8 Advarsel: Sikkerhetsinformasjon Les dette frst Atencin: Informacin de Seguridad Lea Esto Primero, Cuidado: Informaes de Segurana Leia Primeiro Vaara: NB: SikkerhedsforskrifterLs dette frst Fare! Varning: Skerhetsfreskrifter Ls detta frst, Varning livsfara: Perigo: D-10 Page Page UL Notices Trademarks Page zone digital Information Technology Vocabulary IBM Dictionary of Computing B X-2 workstation analog baud E TCP/IP F G H K X-4 wide area network (WAN) metropolitan area network (MAN) token ring N direct access storage device socket BIOS O S T local area network (LAN) U IPX optical wrap telephone twisted pair V Page Index Numerics A C D O X-10 P R S Tell Us What You Think! BUSINESS REPLY MAIL