Lenovo H4 Series Hardware Maintenance Manual V2.0
Page 32
... system 8042 Gate A20 test error (cannot manufacturer's technical support. This will reveal the malfunctioning card. 8 beeps If the system video adapter is an Display memory error (system video add-in base memory (first 64KB block) 3 beeps Base memory read/write test error 4... indicating a serious Motherboard timer not operational problem with known good modules. 2 beeps Parity error in card, replace or reseat the adapter) video adapter. If the video adapter is causing the malfunction. The following tables describes beep symptoms. Beep Symptom 1 beep Memory refresh...
... system 8042 Gate A20 test error (cannot manufacturer's technical support. This will reveal the malfunctioning card. 8 beeps If the system video adapter is an Display memory error (system video add-in base memory (first 64KB block) 3 beeps Base memory read/write test error 4... indicating a serious Motherboard timer not operational problem with known good modules. 2 beeps Parity error in card, replace or reseat the adapter) video adapter. If the video adapter is causing the malfunction. The following tables describes beep symptoms. Beep Symptom 1 beep Memory refresh...
Lenovo H4 Series Hardware Maintenance Manual V2.0
Page 33
...tests that check the operation of the system and some basic system-board operations • Checks the memory operation • Starts the video operation • Verifies that the boot drive is called the Power-On Self-Test, or POST. Remove all other error messages probably... will reveal the malfunctioning card. Insert the cards back into the system one of the first error message, the other expansion cards Cache memory test failed are not generated 11 beeps when all expansion 10 beeps cards except the video adapter. POST does the following operations. ...
...tests that check the operation of the system and some basic system-board operations • Checks the memory operation • Starts the video operation • Verifies that the boot drive is called the Power-On Self-Test, or POST. Remove all other error messages probably... will reveal the malfunctioning card. Insert the cards back into the system one of the first error message, the other expansion cards Cache memory test failed are not generated 11 beeps when all expansion 10 beeps cards except the video adapter. POST does the following operations. ...
