CHECKOUT GUIDE
5. Click on Exit.
6. Click on FDD-1 or FDD-2 to start the test.
7. Insert the blank diskette when instructed and follow
the instructions on the screen.
8. If the controller test detects an error, FRU code 10
appears. Replace the system board.
9. If the controller test runs without errors, the drive
read/write tests start automatically. If a drive test
detects an error, FRU code 50 for FDD-1 or 51 for
FDD-2 appears. If the diskette itself is known to be
good, replace the drive.
Fan Checkout
To check the fan, do the following:
1. Start Easy-Setup.
2. Click on Test. The fan will start so you can check the
air turbulence at the louver near the power switch.
3. Press Ctrl
+
A to enter the advanced diagnostic mode.
The ThinkPad FRU Connections window appears. If
the fan connector is not connected, Fan not
connected message appears.
4. Click on Exit. The keyboard layout window appears.
5. Click on Exit.
6. Click on System Board and press Enter to run the
test. Follow the description on the window. If the test
detects the fan problem, replace it.
Indicator LED Checkout
If an indicator LED problem occurs, do the following:
1. Power off the computer.
2. Power on the computer. All the LEDs should turn on
for a moment after the computer is powered on.
3. Verify that all LEDs turned on. If some of the LEDs
do not turn on, replace the card that the LEDs are on.
If the problem persists, replace the system board.
Indicator Panel Checkout
If an indicator panel problem occurs, do the following:
1. Power off the computer.
2. Power on the computer. All the icons should turn on
for a moment after the computer is powered on.
3. Verify that all icons appear correctly. If some of the
icons do not appear, replace the card that the
indicator panel is connected to. If the problem
persists, replace the DC-DC card.
Keyboard or Auxiliary Input Device
Checkout
Remove the external keyboard if the internal keyboard is to
be tested.
32
Summary of Contents for ThinkPad 770E
Page 80: ...FRU REMOVALS AND REPLACEMENTS 74...
Page 102: ...FRU REMOVALS AND REPLACEMENTS Locate the microphone spacer and cable 96...
Page 111: ...FRU REMOVALS AND REPLACEMENTS ThinkPad 770 770E 770X and 770Z 105...
Page 123: ...PARTS LIST Parts List ThinkPad 770 770E 770X and 770Z 117...
Page 136: ...IBM Part Number 37L5152 Printed in U S A S1 L 9621 2...
