Toshiba Infinia 7130 Series Maintenance Manual page 67

Procedure 17
The purpose of this procedure is to determine if the problem is related to a defective system
board. To perform this procedure, begin with Check 1 and continue as instructed.
NOTE: The microprocessor, the heat sink, the memory SIMMs, and the I/O
spring are individual FRUs and are not considered part of the system board.
Remove these FRUs from the current system board and install them on the new
system board before performing Check 1.
Check 1 (A) Replace the system board (refer to section 4.9.). (B) Test to determine if the
problem still exists.
If the problem still exists, contact Toshiba technical support. If the problem no
longer exists, perform Check 2.
Check 2 (A) Reinstall all expansion cards and devices (refer to Chapter 4). (B) Test the
system to determine if the original problem still exists.
If the original problem still exists, contact Toshiba technical support. If the
original problem no longer exists, perform the Repair Completion Process.
Power Supply Troubleshooting Process
This section describes how to determine if the power supply is defective or is not operating
properly. Begin with Procedure 1 and perform the remaining procedures as instructed. The
procedures described in this section include:
Procedure 1
Procedure 2
Procedure 3
Procedure 4
Procedure 5
Procedure 6
NOTE: While performing the procedures in this section, refer to Appendix I for
proper power supply voltages as necessary.
Procedure 1
The purpose of this procedure is to determine if the power supply unit is supplying the
appropriate voltages. To perform this procedure, complete the following instructions, then
begin with Check 1 and continue as directed.
Verify that the computer is powered off.
Verify that the AC power cord is disconnected.
Remove all expansion cards and devices from the system(refer to chapter 4).
Disconnect power supply connectors P1 through P6 from the system board and
other devices (HDD, FDD, CD-ROM Drive).
Infinia™ 7130, 7160, and 7200 Maintenance Manual ---------------------------------------- 3-60
System Board Replacement Check
Voltage Check
Short Circuit Check
FDD Check
HDD Check
CD-ROM Drive Check
Optional Component Check
Voltage Check