Miscellaneous Symptoms (8554)

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 1. System Board
   display during POST. 2. Voltage Converter
   (See 'Power Systems Checkout' 3. Communications Cartridge
   before replacing any FRUs.) 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 1. Speaker
   display during POST. 2. Indicator Card
  3. System Board
  4. Keyboard Control Card
   A no beep  and the computer 1. System Board
   hangs after displaying memory count. 2. Communications Cartridge
  3. Hard Disk Drive
   LCD too dark, unable to adjust 1. LCD Panel
   contrast or brightness. 2. Regulator
   (See 3. Voltage Converter
   'CL57LCD FRU Replacement Notice'  
   before replacing any FRUs.)  
   LCD unreadable or illegible. 1. LCD Panel
   (See 2. Display Control Card
   'CL57 LCD FRU Replacement Notice' 3. LCD Cable
   before replacing any FRUs.)  
   Missing or discolored dots 1. See 'CL57 LCD FRU Replacement Notice'
   on the LCD panel.  
   Unable to turn the LCD on and off. 1. Regulator
  2. Voltage Converter
  3. LCD Cable
   Blank screen, or extra horizontal 1. LCD Panel
   or vertical line(s) displayed on 2. Display Control Card
   upper or lower half of the LCD. 3. LCD Cable
   (See 'CL57 LCD FRU Replacement Notice'  
   before replacing any FRUs.)  
   Four battery indicators are blinking. 1. Voltage Converter
   Battery ID 1 2. System Board
   Battery Status 1  
   Battery ID 2  
   Battery Status 2  
   System status indicator is 1. Related Device
   incorrectly blinking or stays on. 2. System Board
  3. Indicator Card
   System status indicator stays off, 1. Indicator Card
   but the POST ends without an error 2. System Board
  3. Related Device
   Reference Diskette does not work. 1. Diskette Drive
   (Try another Reference Diskette 2. System Board
   or any bootable diskette before 3. Diskette Drive Cable
   replacing FRUs. Ensure all 4. Reference Diskette
   correct level drivers are loaded.)  
   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. 1. Keyboard
   (See 2. Numeric Keypad
   'Ext. Keyboard/Aux. Input Device Checkout' 3. Keyboard Control Card
   before replacing any FRUs.)  
   External display problems. 1. External Display
   (See 2. Display Control Card
   'External Display Self-Test'    
   before replacing any FRUs.)  
   Incorrect memory size during POST. 1. System Board
   (See 'Memory Checkout' 2. Memory Module
   before replacing any FRUs.) 3. IC DRAM Card
   Computer hang or Intermittent hang. 1. System Board
   (See 'Undetermined Problem' 2. Hard Disk Drive Cable
   before replacing any FRUs.) 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 1. System Board
   mode after the POST. 2. Voltage Converter
  3. Lid Switch
  4. Keyboard Control Card
   The computer does not suspend 1. System Board
   or resume. 2. Voltage Converter
  3. Lid Switch
  4. Keyboard Control Card
   The computer does not power off. 1. Voltage Converter
  2. System Board
  1. Indicator Card
   Real-time clock inaccurate. 1. Backup Battery
   (See 'Testing the Backup Battery' 2. System Board
   before replacing any FRUs.)  
   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 1. See 'Fax/Modem Checkout'
   not communicate with a remote  
   modem or a fax  

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