Advertisement
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.
Page 2-2
FIGURE 2-1 Problem Isolation Flowchart
Page 2-3
FIGURE 2-1 Problem Isolation Flowchart
1.
If an error is generated on the system test, memory test, display
test and real time test, go to system PCB isolation procedures in part
2.4.
2.
If an error is generated on the keyboard test, go to keyboard
isolation procedures in part 2.8.
3.
If an error is generated on the floppy disk test, go to FDD
isolation procedures in part 2.5.
MODEL:T1200H/HB
Page 2-4
2.3 POWER SUPPLY PCB ISOLATION PROCEDURES
This section describes how to determine whether the power supply PCB is
defective or not. The procedures below are outlined in the following
pages. They should be performed in the order indicated.
PROCEDURE 1:
PROCEDURE 2:
PROCEDURE 3:
PROCEDURE 4:
PROCEDURE 5:
Page 2-5
PROCEDURE 1
Battery Check
1.
Turn the POWER switch off.
2.
Disconnect the ac adapter.
con't.
Battery Check
Power Supply Indicator Check
Connector Check
Output Voltage Check
Power Supply PCB Replacement
Advertisement
