11.3 Miscellaneous Symptoms
+------------------------------------------------------------------------+
¦ Symptom/Error ¦ FRU/Action ¦
+------------------------------------+-----------------------------------¦
¦ LCD too dark, unable to adjust ¦ LCD Panel ¦
¦ contrast or brightness. ¦ Regulator ¦
¦ (See "LCD Panel" in topic 7.0 ¦ Voltage Converter ¦
¦ before replacing any FRUs.) ¦ ¦
+------------------------------------+-----------------------------------¦
¦ LCD unreadable or illegible. ¦ LCD Panel ¦
¦ (See "LCD Panel" in topic 7.0 ¦ Display Control Card ¦
¦ before replacing any FRUs.) ¦ LCD Cable ¦
+------------------------------------+-----------------------------------¦
¦ Missing or discolored dots on the ¦ See "LCD Panel" in topic 7.0 ¦
¦ LCD panel. ¦ before replacing the LCD panel. ¦
+------------------------------------+-----------------------------------¦
¦ Unable to turn the LCD on and off. ¦ Regulator ¦
¦ ¦ Voltage Converter ¦
¦ ¦ LCD Cable ¦
+------------------------------------+-----------------------------------¦
¦ Blank screen, or extra horizontal ¦ LCD Panel ¦
¦ or vertical line(s) displayed on ¦ Display Control Card ¦
¦ upper or lower half of the LCD. ¦ LCD Cable ¦
¦ (See "LCD Panel" in topic 7.0 ¦ ¦
¦ before replacing any FRUs.) ¦ ¦
+------------------------------------+-----------------------------------¦
¦ Four battery indicators are ¦ Voltage Converter ¦
¦ blinking. ¦ System Board ¦
¦ Battery ID 1 ¦ ¦
¦ Battery Status 1 ¦ ¦
¦ Battery ID 2 ¦ ¦
¦ Battery Status 2 ¦ ¦
+------------------------------------+-----------------------------------¦
¦ System status indicator is ¦ Related Device ¦
¦ incorrectly blinking or stays on. ¦ System Board ¦
¦ ¦ Indicator Card ¦
+------------------------------------+-----------------------------------¦
¦ System status indicator stays off, ¦ Indicator Card ¦
¦ but the POST ends without an ¦ System Board ¦
¦ error. ¦ Related Device ¦
+------------------------------------+-----------------------------------¦
¦ Keyboard does not work. ¦ Keyboard-control card ¦
¦ ¦ Keyboard Cable ¦
¦ ¦ Numeric Keypad if used ¦
¦ ¦ System Board ¦
+------------------------------------+-----------------------------------¦
¦ One or more keys do not work. ¦ Keyboard ¦
¦ (See "Keyboard" in topic 8.0 ¦ Numeric Keypad if installed ¦
¦ before replacing any FRUs.) ¦ Keyboard Control Card ¦
+------------------------------------+-----------------------------------¦
¦ External display problems. ¦ External Display ¦
¦ (See "External Display Self-Test" ¦ Display Control Card ¦
¦ in topic 9.0 before replacing any ¦ ¦
¦ FRUs.) ¦ ¦
+------------------------------------+-----------------------------------¦
¦ Incorrect memory size during POST. ¦ System Board ¦
¦ (See "Memory" in topic 10.0 before ¦ Memory Module ¦
¦ replacing any FRUs.) ¦ IC DRAM Card ¦
+------------------------------------+-----------------------------------¦
¦ System hang-up or Intermittent ¦ System Board ¦
¦ hang-up. ¦ Hard Disk Drive Cable ¦
¦ (See "Undetermined Problem" in ¦ Hard Disk Drive ¦
¦ topic 3.0 before replacing any ¦ Replace the last device ¦
¦ FRUs.) ¦ being tested ¦
¦ ¦ Display Control Card ¦
¦ ¦ Memory Module ¦
¦ ¦ IC DRAM Card ¦
¦ ¦ Voltage Converter ¦
+------------------------------------+-----------------------------------¦
¦ The system goes into suspend mode ¦ System Board ¦
¦ after the POST. ¦ Voltage Converter ¦
¦ ¦ Lid Switch ¦
¦ ¦ Keyboard Control Card ¦
+------------------------------------+-----------------------------------¦
¦ The system does not suspend or ¦ System Board ¦
¦ resume. ¦ Voltage Converter ¦
¦ ¦ Lid Switch ¦
¦ ¦ Keyboard Control Card ¦
+------------------------------------+-----------------------------------¦
¦ The system does not power off. ¦ Voltage Converter ¦
¦ ¦ System Board ¦
¦ ¦ Indicator Card ¦
+------------------------------------+-----------------------------------¦
IBM PS/2 Model CL57 SX HMS
Miscellaneous Symptoms
¦ Copyright IBM Corp. 1992
11.3 - 1