Miscellaneous error conditions. Lenovo E73z, 10Bl

Error code

1820

1962

POST error message

More than one external fingerprint reader are attached. Power off and remove all but the reader that you set up within your main operating system.

No operating system found. Press any key to repeat boot sequence.

Description/Action

If more than one external fingerprint reader are connected to a computer, this error message will be displayed to inform you to remove all of the fingerprint keyboards except the one compatible with the fingerprint application on your computer.

This error occurs only after the POST is completed.

Press any key to repeat boot sequence.

Miscellaneous error conditions

Message/Symptom

Changing display colors

Computer will not

power-off. See “Hard disk drive boot error” on page 59.

FRU/Action

Display/Monitor

1. Power Switch

2. System Board

3. Riser card, if installed.

Computer will not RPL from server

Computer will not perform a Wake On LAN ® (if applicable) 1. Check power supply and signal cable connections to network adapter.

2. Ensure that the operating system settings are set to enable Wake on LAN.

3. Ensure Wake On LAN feature is enabled in

Setup/Configuration (see “Starting the Setup Utility program” on page 55)

4. Ensure network administrator is using correct MAC address.

5. Ensure no interrupt or I/O address conflicts.

6. Network adapter (advise network administrator of new MAC address)

Dead computer. See “Hard disk drive boot error” on page

59.

1. Ensure that network is in startup sequence as first device or first device after diskette.

2. Ensure that network adapter is enabled for RPL.

3. Network adapter (Advise network administrator of new MAC address)

Diskette drive in-use light remains on or does not light when drive is active.

1. Power Supply

2. System Board

1. Diskette Drive

2. System Board

3. Diskette Drive Cable

Blank screen except for flashing cursor.

1. System Board

2. Primary Hard Disk Drive

3. Hard Disk Drive Cable

Chapter 7 .

Symptom-to-FRU Index

61

Message/Symptom

Incorrect memory size during POST

"Insert a Diskette" icon appears with a known-good diagnostics diskette in the first 3.5-inch diskette drive.

Intensity or color varies from left to right of characters and color bars

No power or fan not running

Non-system disk or disk error-type message with a known-good diagnostic diskette.

Other display symptoms not listed above (including blank or illegible display)

Power-on indicator or hard disk drive in-use light not on, but computer works correctly

Printer problems

Program loads from the hard disk with a known-good diagnostics diskette in the first 3.5-inch diskette drive

RPL computer cannot access programs from its own hard disk.

RPL computer does not RPL from server

Serial or parallel port device failure (system board port)

FRU/Action

1. Run the Memory tests.

2. Memory Module

3. System Board

1. System Board

2. Diskette Drive Cable

3. Network Adapter

1. Display

2. Video adapter (if present)

3. System Board

1. See “Hard disk drive boot error” on page 59.

1. Diskette Drive

2. System Board

3. Diskette Drive Cable

1. Display

2. System Board

1. Power switch/LED assembly

2. System Board

1. Printer

2. System Board

1. Run the Setup Utility program and check Startup sequence.

2. Diskette Drive

3. Diskette Drive Cable

4. System Board

5. Power Supply

1. If network administrator is using LCCM Hybrid RPL, check startup sequence: a.

First device - network b.

Second device - hard disk

2. Hard disk drive

1. Check startup sequence.

2. Check the network adapter LED status.

1. External Device Self-Test OK?

2. External Device

3. Cable

4. System Board

62 ThinkCentre E73z Hardware Maintenance Manual