Toshiba T1200 - Problem Isolation Procedures; 2.1 General; 2.2 Problem Isolation Flowchart

2.1 GBRBRAL
These problem isolation procedures are used to isolate defective
FRUs (field replaceable units) to be replaced. FRUs consist of
the following:
1. Power supply PCB
2. System PCB
3. FDD
4 • HDD and HOC
5. Keyboard
6. LCD
See PART 4 for detailed replacement procedures instructions.
Test program operations.are described in PART 3.
The following items are necessary for carrying out the problem
isolation procedures.
1. T1200 Diagnostics disk
2. Flatbladed screwdriver
3. Work disk (for FDD testing)
4. Cleaning disk kit (for FDD testing)
5. Multimeter
6. Printer port LED
The problem isolation flowchart described in part 2.2 can be
used to determine the necessary isolation procedures to be
followed when there is a problem with the T1200.
2.2 PROBLEM ISOLA"l'IOR ~BAR-r
This flowchart is used as a guide for determining which FRU is
defective. Please confirm the following before performing the
flowchart procedures.
1. No disk is in the FDD.
2. The HDD switch is off.
3. The ac adapter is disconnected.
4. All optional equipment is disconnected.
See next· page.
2-1