Lenovo ThinkPad 560Z TP 560Z Hardware Maintenance Manual for use by Authorized - Page 19

Status Indicator Checkout, System Board and CPU Mini-Cartridge Checkout, as failing

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Wire Red Black Voltage (V dc) +2.5 to +3.7 Ground If the voltage is correct, replace the system board. If the voltage is not correct, replace the backup battery. If the backup battery discharges quickly after replacement, replace the system board. Status Indicator Checkout If an LED problem occurs, do the following: 1. Power off the computer. 2. Power on the computer. 3. All the LEDs in the indicator panel, except the Hard Disk In Use LED, should turn on for a moment soon after the computer is powered on. Make sure they turn on. If the problems persists, replace the system board. System Board and CPU Mini-Cartridge Checkout The system board and the CPU mini-cartridge FRUs perform the operation on the computer. Processor problems can be caused by either FRU. Generally, the CPU mini-cartridge has a lower failure rate. If a numeric code indicates the system board or the CPU mini-cartridge as failing, do the following procedure to isolate the problem: 1. Run the system board test to verify the symptom. This test verifies both the system board and the CPU mini-cartrige. If no error is detected, return to "Undetermined Problems" on page 31. Note: Do not touch the keyboard and the pointing device when the system board is being tested. This might cause unexpected errors. 2. If FRU code 10 appears, replace the system board, but do not replace the CPU mini-cartrige. Transfer ThinkPad 560Z HMM 17

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If the voltage is correct, replace the system board.
If the voltage is not correct, replace the backup
battery.
If the backup battery discharges quickly after
replacement, replace the system board.
Wire
Voltage (V dc)
Red
+
2.5 to
+
3.7
Black
Ground
Status Indicator Checkout
If an LED problem occurs, do the following:
1.
Power off the computer.
2.
Power on the computer.
3.
All the LEDs in the indicator panel, except the Hard
Disk In Use LED, should turn on for a moment soon
after the computer is powered on.
Make sure they
turn on.
If the problems persists, replace the system board.
System Board and CPU Mini-Cartridge
Checkout
The system board and the CPU mini-cartridge FRUs
perform the operation on the computer. Processor
problems can be caused by either FRU.
Generally, the
CPU mini-cartridge has a lower failure rate.
If a numeric
code indicates the system board or the CPU mini-cartridge
as failing, do the following procedure to isolate the
problem:
1.
Run the system board test to verify the symptom.
This test verifies both the system board and the CPU
mini-cartrige.
If no error is detected, return to
“Undetermined Problems” on page
31.
Note:
Do not touch the keyboard and the pointing
device when the system board is being tested.
This might cause unexpected errors.
2.
If FRU code 10 appears, replace the system board,
but do not replace the CPU mini-cartrige.
Transfer
ThinkPad 560Z HMM
17