3.4.5 DRAM test
In the test mode menu, press numeric button ‘1’ and select the DRAM test mode. DRAM test 1
writes and reads data into and from all areas of the DRAM and checks that the operation is normal.
DRAM test 2 performs data read only, at high speed.
In the event of an error, replace the SCNT board.
DRAM TEST 0C30000
DRAM COMPLTE
0C30000: sector being checked
Testing
Normal completion
W= 33CC
R= 3333
Error
Error display
Press the START/ COPY
button to restart
Error display
W: Write data
R: Read data
ADR: Address
:
ADR
ADR= 2800
DRAM
(error)
Figure 1-12 DRAM test
1-39
Summary of Contents for FAX-B820
Page 5: ...Part 1 Maintenance ...
Page 43: ...3 4 4 Test mode menu Figure 1 11 Test mode 1 38 ...
Page 52: ...Part 2 Technical Reference ...
Page 54: ...Part 3 Appendix ...
Page 55: ...1 Schematic 3 1 ...
