IBM CL57 User manual

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.
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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.
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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.
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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)
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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
On
On
On
On
On
Off
Off
Off
Off
–
On
On
Off
Off
Off
Off
Off
On
On
On
On
–
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
3.
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.
4
2
1
3
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
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