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The following table shows functions of the jumper straps.
Jumper Strap Functions
MODEL:T1200H/HB
Page 2-1
2.1 GENERAL
These problem isolation procedures are used to isolate defective
(field replaceable units) to be replaced.
following:
1.
Power supply PCB
2.
System PCB
3.
FDD
4.
HDD and HDC
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.
MODEL:T1200H/HB
Page 2-1
2.2 PROBLEM ISOLATION FLOWCHART
This flowchart is used as a guide for determining which FRU is
defective. Please confirm the following before performing the flowchart
procedures.
TABLE 1-8 Jumper Straps Functions
FRUs consist of the
FRUs
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