Toshiba DP120F Service Manual page 635

1.5.6 DRAM TEST
This test conducts a read/write test on all the areas of the DRAM except the work area.
Use the [ ↑ ] or [ ↓ ] key to select the "06. DRAM TEST", and then press the [ENTER] key.
(1)
DRAM TEST
TESTING
<Remarks>
DRAM TEST
NG
ADDRESS=
<Remarks>
Address (H)
400000 to 5FFFFF
600000 to 7FFFFF
800000 to 9FFFFF
A00000 to BFFFFF
EC0000 to EFFFFF
(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.
March 2000 © TOSHIBA TEC
On completing all the
addresses normally
About 6 minutes
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.
YYYYYYH
The address assigned to each memory is as in the table below.
When an error occurs, refer to this table.
IC No.
IC34
IC41
IC1
Memory PBA (Option) con-
IC2
nected to CN7 of Main PBA
IC25
[MENU], [9], [4], [06]
DRAM TEST
OK
→
If no further errors are
found after resuming
→
DP120F
Installed PBA
Main PBA
Main PBA
11-23
DRAM TEST
NG
COMPLETED
DP125F
IC No. Installed PBA
IC46 Main PBA
IC25 Main PBA
DP120F/DP125F Troubleshooting