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67 Printer checks. SIMULATION No.67- _
PRINTER BOARD SELF-DIAGNOSIS
1.MEMORY R/W 3.CENTRO TIMING
2.CENTRO PORT 11.SELECT-IN SIGNAL
FLASH MEMORY SELF-DIAGNOSIS
6.FONT WRITING 12.PROGRAM WRITING
7.FONT VERIFYING 13.PROGRAM VERIFYING
8.FONT W/V 14.PROGRAM W/V
9.AREA TESTING 15.PROGRAM CHECK SUM
10.FONT CHECK SUM
INPUT SUB NO. AND PRESS PRINT SWITCH
01 DRAM check. • Checking in progress
SIMULATION No.67- 1
PRINTER BOARD MEMORY R/W CHECK
DRAM NO. 12345678
DRAM : 0010****
SIMM : CHECKING
• Check completed (example)
SIMULATION No.67- 1
PRINTER BOARD MEMORY R/W CHECK
DRAM NO. 12345678
DRAM : 00100000
SIMM : 0 MB
[PAUSE]KEY:END DISPLAY
[Content] The read/write of the RAM on the PRT PWB is checked. This check is performed
in units of words (4 bytes) of the CPU. First, the RAM on the board is tested.
“5555AAAAH” is written in all addresses, and the contents in all the addresses are
read in sequence for verification. If there is no error, 0 is displayed; if there is an
error, 1 is displayed.
Then, the RAM on the SIMM is tested in the same manner as above. If there is no
error, the RAM capacity of the SIMM (0 MB/4 MB/8 MB/16 MB) is displayed; if
there is any error, NG is displayed.
(a) Operation/display
[PAUSE]: The execution of the simulation is stopped and the sub code input screen is
displayed.
[CA]: The execution of the simulation is stopped and the simulation is terminated.
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