AR-BD14 (serv.man5). ARBD14-Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 21

Main

Sub

Item

Content

Adjustment

code

code

range

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
 9.AREA TESTING
12.PROGRAM WRITING
13.PROGRAM VERIFYING
14.PROGRAM W/V
15.PROGRAM 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/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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