Toshiba DP120F, Service Manual

Page: 635 / 706

March 2000 © TOSHIBA TEC 11-23 DP120F/DP125F Troubleshooting
1.5.6 DRAM TEST [MENU], [9], [4], [06]
This test conducts a read/write test on all the areas of the DRAM except the work area.
(1) Use the [
↑
] or [
↓
] key to select the "06. DRAM TEST", and then press the [ENTER] key.
<Remarks> If a memory error occurs, the address where the error occurred is dis-
played and the procedure is suspended. The test will resume upon press-
ing the [START] key.
<Remarks> The address assigned to each memory is as in the table below.
When an error occurs, refer to this table.
→
DRAM TEST
NG
ADDRESS=
YYYYYYH
If no further errors are
found after resuming
DRAM TEST
NG
COMPLETED
(2) When you complete the test, press the [STOP] key to return to the standby mode screen.
(3) Depending on the result of the test, replace the Main PBA or Memory PBA referring to
"Chapter 8 Removal/Replacement/Adjustment" on page 8-46 or 8-41.
Address (H)
400000 to 5FFFFF
600000 to 7FFFFF
800000 to 9FFFFF
A00000 to BFFFFF
EC0000 to EFFFFF
IC No.
IC34
IC41
IC1
IC2
IC25
Installed PBA
Main PBA
Memory PBA (Option) con-
nected to CN7 of Main PBA
Main PBA
IC No.
IC46
IC25
Installed PBA
Main PBA
Main PBA
DP120F DP125F
→
DRAM TEST
TESTING
On completing all the
addresses normally
About 6 minutes
DRAM TEST
OK