Starting Check - NEC Versa Note Series Service And Reference Manual

Starting Check

Memory Interface Check
6-16 Troubleshooting and Repair
START
+5Vs = 5V
+3Vs = 3.3V
YES
NO
Check +VIO
YES
NO
Check HCLKCPU =
66MHz
YES
NO
Check PCLK P4 =
33MHz
YES
END
START
Check Memory Vcc =
3.3V
YES
NO
Check RAS (0~3),
CAS (0~7) signals
YES
Check MA (0~11)
YES
Check MD(0~63)
END
NO
Check U15 Pin 7 =
high level
Check Intel Mobile
Module (IMM)
Check U26 Pin 41,
Pin 42
Check U26 Pin 8, 9,
11, 12, 13, 14
NO
Check DC-DC Board
Check RP10, RP11
NO
Check IMM and
memory connector
NO
Check RP14, 7, 8,
13, 6, 9, 12, 15