IBM CL57 Bedienungsanleitung

Model CL57 (8554)

General Checkout . . . . . . . . . . . . . . . . 112

Memory Checkout . . . . . . . . . . . . . . 115

Power Systems Checkout .......... 117

Symptom-to-FRU Index . . . . . . . . . . . . . 122

Numeric Error Codes ............. 123

Beep Symptoms . . . . . . . . . . . . . . . 127

Miscellaneous Symptoms . . . . . . . . . . 127

Undetermined Problem . . . . . . . . . . . . 130

Related Service Procedures ........... 131

Checking Installed Devices .......... 131

Power-on Password . . . . . . . . . . . . . 132

How to Run the Advanced Diagnostics .... 132

Hard Disk Partition .............. 132

Restoring the Partition ............ 133

CL57 LCD FRU Replacement Notice ..... 133

Product Overview . . . . . . . . . . . . . . . . 134

FRU Removals and Replacements ........ 135

Locations . . . . . . . . . . . . . . . . . . . . 140

Parts Listing . . . . . . . . . . . . . . . . . . 141

 Copyright IBM Corp. 1995 111

General Checkout

001

DOES THE PROBLEM APPEAR TO BE A POWER

SUPPLY FAILURE?

Yes No

002

Go to Step 006.

003

DO ALL SYSTEM-STATUS INDICATORS REMAIN OFF?

Yes No

004

Go to Step 006.

005

– Make sure the power control switch at the rear of the

computer is set to ON.

– Go to “Power Systems Checkout” on page 117.

006

– Power-off the computer and all external devices.

– Check all cables and power cords.

– Make sure no diskette is in the drive.

– Power-on all external devices.

– Power-on the computer and check for the following

responses:

1. All system-status indicators appear once for about

1 second.

Note: Some indicators remain on and others go

off after 1 second.

2. Memory test (the number increases.)

3. Audible responses:

One short beep

- or -

Two short beeps.

DID YOU RECEIVE THE RESPONSES LISTED ABOVE?

Yes No

007

Go to Step 013 on page 114.

008

– Press Ctrl+Alt+Del. When the cursor moves to the

upper right, press Ctrl+Alt+Ins to start the system

program.

112 IBM Mobile Systems HMM - Volume 1

If the IBM logo screen does not appear, insert the

backup Reference Diskette into the diskette drive and

repeat this step.

1. If you are not at the Main Menu, follow the

instructions on the screen to advance to the Main

Menu.

If you cannot advance to the Main Menu, go to

“Symptom-to-FRU Index” on page 122.

- or -

If that does not correct the problem, go to

“Undetermined Problem” on page 130.

Notes:

a. If the computer has an incorrect keyboard or

numeric keypad response, go to “External

Keyboard/Auxiliary Input Device Checkout” on

page 465.

b. If the printer has incorrect responses, go to

“Printer Checkout” on page 468.

c. If the external CRT display has problems such

as jittering, rolling, shifting, or being

out-of-focus, go to “External Display Self-Test”

on page 464.

2. Press Ctrl+A and run the system checkout.

IS THE LIST OF INSTALLED DEVICES CORRECT?

Yes No

009

Go to “Checking Installed Devices” on page 131.

010

– Run the diagnostic tests.

DID THE TEST IDENTIFY A FAILURE?

Note: If the test stops and you cannot continue, replace

the last device tested.

- or -

If any POST error code appears, go to

“Symptom-to-FRU Index” on page 122.

Yes No

011

You might have an intermittent problem:

Check for damaged cables and connectors.

Reseat all adapters, drives, and modules.

Start an error log and run the tests multiple

times.

(Step 011 continues)

Model CL57 (8554) 113

(CONTINUED)

011 (continued)

Check the power supply in use when the error

is reported (see “Power Systems Checkout” on

page 117).

Check “Symptom-to-FRU Index” on page 122.

If this did not fix the problem, go to

“Undetermined Problem” on page 130.

012

Go to “Symptom-to-FRU Index” on page 122.

013

DID NOTHING APPEAR ON THE SCREEN?

Yes No

014

If all system-status indicators do not appear for

about 1 second, go to Step 016 under “Power

Systems Checkout” on page 117.

If the memory count is incorrect, go to “Memory

Checkout” on page 115.

Go to “Symptom-to-FRU Index” on page 122.

If that does not correct the problem, go to

“Undetermined Problem” on page 130.

015

Go to “Symptom-to-FRU Index” on page 122.

- or -

If that does not correct the problem, go to “Undetermined

Problem” on page 130.

114 IBM Mobile Systems HMM - Volume 1

Memory Checkout

Customer diagnostics can eliminate defective memory so

no memory error code appears at power-on reset. After

you replace a defective memory module on the system

board or IC DRAM card, run Automatic Configuration.

Otherwise, the new memory will not be recognized. (If you

have to run configuration with your own diskette, be sure

the customer has all the correct option diskettes available.)

Power-off the computer before removing or replacing parts.

001

– Remove all IC DRAM cards from the slots if installed.

– Run the memory tests.

Use the RUN TESTS ONE TIME option.

DID THE MEMORY TESTS END WITHOUT AN ERROR?

Yes No

002

Replace the memory module on the system board.

003

DID YOU REMOVE THE IC DRAM CARD FROM

SLOT 1?

Yes No

004

Go to Step 007.

005

– Reinstall the IC DRAM card into slot 1 and run

Automatic Configuration.

– Run the memory test.

Use the RUN TESTS ONE TIME option.

DID THE MEMORY TESTS END WITHOUT AN ERROR?

Yes No

006

Replace the IC DRAM card in slot 1.

If that does not correct the problem, replace the

system board.

007

DID YOU REMOVE THE IC DRAM CARD

FROM SLOT 1?

Yes No

008

(Step 008 continues)

Model CL57 (8554) 115

(CONTINUED)

008 (continued)

Go to Step 011.

009

– Reinstall the IC DRAM card into slot 2 and run

Automatic Configuration.

– Run the memory test.

Use the RUN TESTS ONE TIME option.

DID THE MEMORY TESTS END WITHOUT AN ERROR?

Yes No

010

Replace the IC DRAM card in slot 2.

If that does not correct the problem, replace the

system board.

011

If the problem occurs intermittently, run the memory tests

multiple times to have an error log.

116 IBM Mobile Systems HMM - Volume 1

Power Systems Checkout

Note

One or all of the batteries can discharge if there is a

short circuit in the computer.

1. Replace the failing FRU if the power supply problem

is caused by a short circuit.

2. Determine if one (or all) of the batteries have become

discharged. Replace a discharged battery with a

known-good spare.

3. Observe the Battery ID indicators or swap the two

battery packs to determine which one has become

discharged.

The test procedures for each power supply are found on

the following pages.

“Testing the AC Adapter” on page 120.

“Testing the Battery Pack” on page 121.

“Testing the Backup Battery” on page 121.

None of the above? Follow the steps below.

001

DID THE PROBLEM OCCUR ONLY WHEN USING THE

AC ADAPTER?

Yes No

002

Go to Step 004.

003

Go to “Testing the AC Adapter” on page 120. If that does

not correct the problem, replace the voltage converter.

004

DID THE PROBLEM OCCUR ONLY ON BATTERY

POWERED OPERATION?

Yes No

005

Go to Step 007 on page 118.

006

– Make sure the battery packs are fully charged.

– Go to “Testing the Battery Pack” on page 121 and

check the battery packs. If that does not correct the

problem, replace the voltage converter.

007

(Step 007 continues)

Model CL57 (8554) 117

(CONTINUED)

007 (continued)

DO ALL SYSTEM STATUS INDICATORS REMAIN OFF

AFTER POWER ON?

Yes No

008

Go to Step 016 on page 119.

009

– Remove the following if installed:

Battery packs

Backup battery

IC DRAM card

Internal Data/Fax modem

Serial adapter

Numeric keypad

Math coprocessor

Mouse

External display

– Go to Step 010.

010

– Plug in the AC adapter and power-on the computer.

DOES ANY INDICATOR REMAIN ON?

Yes No

011

– Power-off the computer and remove the following.

Hard disk drive

Diskette drive

LCD cables

Keyboard flexible cables

– Power-on the computer again.

– Go to Step 013.

012

Suspect one of the options or devices.

– Reinstall each of the options or devices to the computer

one at a time, and power-on the computer to see if the

original problem occurs.

– Replace the last installed option or device when the

problem occurs.

013

(Step 013 continues)

118 IBM Mobile Systems HMM - Volume 1

013 (continued)

DOES ANY INDICATOR REMAIN ON?

Yes No

014

– Replace the following FRUs one at a time until the

problem is corrected.

Indicator card

System board

Voltage converter

015

Suspect one of the devices.

– Reinstall each of the devices to the computer one at a

time, and power-on the computer to see if the original

problem occurs.

– Replace the last installed device when the problem

occurs.

016

– Observe the system-status indicators for about 1 second

after power on.

If the status lights match either condition A or B, replace

the voltage converter. If the status lights are different

from condition A or B, or replacing the voltage converter

does not correct the problem, go to “Undetermined

Problem” on page 130.

System-Status

Indicator Condition A Condition B

Power-On

Suspend Mode

Scroll Lock

Caps Lock

Numeric Lock

Diskette Drive

Hard Disk Drive

Battery ID 2

Battery Status 2

Battery ID 1

Battery Status 1

Carrier Detect

Off

–

Off

–

Model CL57 (8554) 119

Testing the AC Adapter: If the Power-On

indicator is not on, check the power cord of the AC adapter

for proper installation and continuity.

1. If any noise can be heard from the AC adapter when

it is plugged into line voltage, replace the AC adapter

with a new one.

If no noise can be heard from the adapter, go to Step

2. If the noise still comes from the new AC adapter,

suspect the computer. Replace the AC adapter with

the original one, then go to the next step. If no noise

comes from the new adapter, the original adapter has

the problem.

3. Unplug the AC adapter cable from the computer and

measure the output voltages at the plug of the AC

adapter cable. Connect the minus lead of the

volt-ohm meter to pin 3 during the measurement.

If the voltages are not correct:

1. Unplug the AC adapter from the ac power outlet

and leave it for a few minutes.

2. Plug the AC adapter into the ac outlet.

3. Measure the output voltages of the AC adapter.

4. If the voltages are still not correct, replace the

AC adapter.

If the voltages are OK, plug the cable into the

computer and try the failing operation again.

If the problem still remains, replace the voltage converter.

If the problem disappeared, suspect the installation and

continuity of the AC adapter cable.

Pin Voltage (V dc)

1+18 to +22

2+17 to +21

3 GND

4 Communication GND

120 IBM Mobile Systems HMM - Volume 1

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