IBM 2169 ,

Start

This is the entry point for all check procedures. The check

procedures use failure symptoms, Power-On Self Test (POST)

error codes, or beeps to help determine the defective field

replaceable unit (FRU). Follow the suggested check procedures

or use the diagnostics diskette to determine the problem FRU.

IMPORTANT: Replace FRUs ONLY when it is determined that

the error is not a result of software, loose contacts, or

dirty component surfaces. Any FRU change should

be verified by running a complete test (Diagnostics -

All Tests in PC-Doctor diagnostics program).

This book should be used in conjunction with the 2169

diagnostics diskette. This diskette should be used ONLY with

Machine Type 2169. Do not use this diskette on other models.

See page 71 for information on how to download this diskette.

POST error codes and error messages are displayed on the

screen after the IBM logo. A beep will precede each error code

or message. Please refer to “Index of Symptoms, Messages,

Error Codes, or Beeps” on page 74 for additional help.

All voltages in the check procedures are positive unless

otherwise indicated. Use frame ground for all voltage checks

unless otherwise specified.

IMPORTANT: There is a voltage selector on the rear panel of

the machine. Use a flat-head screwdriver to turn the

voltage selector to the voltage setting for the area in

which you will be using the system.

NOTE: If the check procedures instruct you to replace a FRU

and the error message persists, an option adapter

card might be causing the failure. Remove all option

adapter cards, one at a time, until the error changes

or the problem is no longer apparent. The problem

may be in the last card that you removed or

something associated with it.

Type 2169 has recovery and diagnostics programs on a

separate hard drive partition. The recovery CD and Enhanced

Diagnostics diskette are not shipped with the machine or the

HMM. To download diagnostics tests or to order a recovery CD,

see “Enhanced Diagnostics download” or diskette.

The IBM PC Enhanced Diagnostics programs use a full