Notebook CL57SX - Miscellaneous Symptoms

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Service Hints & Tips

Document ID: GSMH-3CVDU8

Notebook CL57SX - Miscellaneous Symptoms

Applicable to: World-Wide

Miscellaneous Symptoms:

Note:
A no beep symptom can be caused by incorrect volume setting of the speaker. Set the speaker volume to its maximum position.

Symptom/Error

FRU/Action

A no beep and a blank or unreadable display during POST.
(See Power Systems Checkout before replacing any FRUs.)

1. System Board
2. Voltage Converter
3. Communications Cartridge
4. Hard Disk Drive
5. Display Control Card
6. Any options
7. Power source when failing

A no beep with a blinking cursor.

1. System Board
2. Display Control Card
3. Communications Cartridge

A no beep with a normal display during POST.

1. Speaker
2. Indicator Card
3. System Board
4. Keyboard Control Card

A no beep and the computer hangs after displaying memory count.

1. System Board
2. Communications Cartridge
3. Hard Disk Drive

LCD too dark, unable to adjust contrast or brightness. (See CL57 LCD FRU Replacement Notice before replacing any FRUs.)

1. LCD Panel
2. Regulator
3. Voltage Converter

LCD unreadable or illegible.
(See CL57 LCD FRU Replacement Notice before replacing any FRUs.)

1. LCD Panel
2. Display Control Card
3. LCD Cable

Missing or discolored dots on the LCD panel.

1. See CL57 LCD FRU Replacement Notice.

Unable to turn the LCD on and off.

1. Regulator
2. Voltage Converter
3. LCD Cable

Blank screen, or extra horizontal or vertical line(s) displayed on upper or lower half of the LCD.
(See CL57 LCD FRU Replacement Notice before replacing any FRUs.)

1. LCD Panel
2. Display Control Card
3. LCD Cable

Four battery indicators are blinking.
Battery ID 1
Battery Status 1
Battery ID 2
Battery Status 2

1. Voltage Converter
2. System Board

System status indicator is incorrectly blinking or stays on.

1. Related Device
2. System Board
3. Indicator Card

System status indicator stays off, but the POST ends without an error.

1. Indicator Card
2. System Board
3. Related Device

Reference Diskette does not work.
(Try another Reference Diskette or any bootable diskette before replacing FRUs. Ensure all correct level drivers are loaded.)

1. Diskette Drive
2. System Board
3. Diskette Drive Cable
4. Reference Diskette

Keyboard does not work.

1. Keyboard Control Card
2. Keyboard Cable
3. Numeric Keypad if used
4. System Board

One or more keys do not work.
(See - 'External Keyboard/Auxillary Input Device Checkout' - before replacing any FRUs.)

1. Keyboard
2. Numeric Keypad
3. Keyboard Control Card

External display problems. (See --'External Display Self-Test' -- before replacing any FRUs.)

1. External Display
2. Display Control Card

Incorrect memory size during POST.
(See Memory Checkout on before replacing any FRUs.)

1. System Board
2. Memory Module
3. IC DRAM Card

Computer hang or Intermittent hang.
(See Undetermined Problem before replacing any FRUs.)

1. System Board
2. Hard Disk Drive Cable
3. Hard Disk Drive
4. Replace the last device being tested
5. Display Control Card
6. Memory Module
7. IC DRAM Card
8. Voltage Converter

The computer goes into suspend mode after the POST.

1. System Board
2. Voltage Converter
3. Lid Switch
4. Keyboard Control Card

The computer does not suspend or resume.

1. System Board
2. Voltage Converter
3. Lid Switch
4. Keyboard Control Card

The computer does not power off.

1. Voltage Converter
2. System Board
3. Indicator Card

Real-time clock inaccurate.
(See Testing the Backup Battery before replacing any FRUs.)

1. Backup Battery
2. System Board

Printer problems.

1. See - 'Printer Checkout'-.

Serial or parallel port device problems.

1. Device
2. Cable
3. System Board
4. Serial Adapter (if attached)
5. I/O Panel Assembly

Internal Data/Fax modem does not communicate with a remote modem or a fax.

1. See - 'Fax/Modem Checkout' -.

Search Keywords

Hint Category

Hardware Maintenance Information

Date Created

31-12-96

Last Updated

21-04-98

Revision Date

11-04-99

Brand

IBM ThinkPad

Product Family

Notebook CL57SX

Machine Type

8554

Model

TypeModel

Retain Tip (if applicable)

N/A

Reverse Doclinks
and Admin Purposes

Symptom/Error	FRU/Action
A no beep and a blank or unreadable display during POST. (See Power Systems Checkout before replacing any FRUs.)	1. System Board 2. Voltage Converter 3. Communications Cartridge 4. Hard Disk Drive 5. Display Control Card 6. Any options 7. Power source when failing
A no beep with a blinking cursor.	1. System Board 2. Display Control Card 3. Communications Cartridge
A no beep with a normal display during POST.	1. Speaker 2. Indicator Card 3. System Board 4. Keyboard Control Card
A no beep and the computer hangs after displaying memory count.	1. System Board 2. Communications Cartridge 3. Hard Disk Drive
LCD too dark, unable to adjust contrast or brightness. (See CL57 LCD FRU Replacement Notice before replacing any FRUs.)	1. LCD Panel 2. Regulator 3. Voltage Converter
LCD unreadable or illegible. (See CL57 LCD FRU Replacement Notice before replacing any FRUs.)	1. LCD Panel 2. Display Control Card 3. LCD Cable
Missing or discolored dots on the LCD panel.	1. See CL57 LCD FRU Replacement Notice.
Unable to turn the LCD on and off.	1. Regulator 2. Voltage Converter 3. LCD Cable
Blank screen, or extra horizontal or vertical line(s) displayed on upper or lower half of the LCD. (See CL57 LCD FRU Replacement Notice before replacing any FRUs.)	1. LCD Panel 2. Display Control Card 3. LCD Cable
Four battery indicators are blinking. Battery ID 1 Battery Status 1 Battery ID 2 Battery Status 2	1. Voltage Converter 2. System Board
System status indicator is incorrectly blinking or stays on.	1. Related Device 2. System Board 3. Indicator Card
System status indicator stays off, but the POST ends without an error.	1. Indicator Card 2. System Board 3. Related Device
Reference Diskette does not work. (Try another Reference Diskette or any bootable diskette before replacing FRUs. Ensure all correct level drivers are loaded.)	1. Diskette Drive 2. System Board 3. Diskette Drive Cable 4. Reference Diskette
Keyboard does not work.	1. Keyboard Control Card 2. Keyboard Cable 3. Numeric Keypad if used 4. System Board
One or more keys do not work. (See - 'External Keyboard/Auxillary Input Device Checkout' - before replacing any FRUs.)	1. Keyboard 2. Numeric Keypad 3. Keyboard Control Card
External display problems. (See --'External Display Self-Test' -- before replacing any FRUs.)	1. External Display 2. Display Control Card
Incorrect memory size during POST. (See Memory Checkout on before replacing any FRUs.)	1. System Board 2. Memory Module 3. IC DRAM Card
Computer hang or Intermittent hang. (See Undetermined Problem before replacing any FRUs.)	1. System Board 2. Hard Disk Drive Cable 3. Hard Disk Drive 4. Replace the last device being tested 5. Display Control Card 6. Memory Module 7. IC DRAM Card 8. Voltage Converter
The computer goes into suspend mode after the POST.	1. System Board 2. Voltage Converter 3. Lid Switch 4. Keyboard Control Card
The computer does not suspend or resume.	1. System Board 2. Voltage Converter 3. Lid Switch 4. Keyboard Control Card
The computer does not power off.	1. Voltage Converter 2. System Board 3. Indicator Card
Real-time clock inaccurate. (See Testing the Backup Battery before replacing any FRUs.)	1. Backup Battery 2. System Board
Printer problems.	1. See - 'Printer Checkout'-.
Serial or parallel port device problems.	1. Device 2. Cable 3. System Board 4. Serial Adapter (if attached) 5. I/O Panel Assembly
Internal Data/Fax modem does not communicate with a remote modem or a fax.	1. See - 'Fax/Modem Checkout' -.

	Search Keywords
	Hint Category	Hardware Maintenance Information
	Date Created	31-12-96
	Last Updated	21-04-98
	Revision Date	11-04-99
	Brand	IBM ThinkPad
	Product Family	Notebook CL57SX
	Machine Type	8554
	Model
	TypeModel
	Retain Tip (if applicable)	N/A
	Reverse Doclinks and Admin Purposes