JHL90 Service Manual
3.5
uter
ures. Check the connection
After checking the connection,
Use a millimeter to make sure that the fuses on the system board are not blown.
nected firmly, go to Check 3.
The system board may be damaged. Replace it with a new one following the
Procedure 5 Replacement check
The system board may be disconnected or damaged. Disassemble the comp
following the steps described Replacement Proced
between the AC adaptor and the system board.
perform Check 1:
Check 1
• If a fuse is not blown, go to Check 2.
• If a fuse is blown, go to Check 3.
Check 2
Make sure that the battery cable is firmly connected to the system board.
• If it is con
Check 3
instructions in Chapter 4.
6-9