3MZ
1-3-36
U894
Performing board test
Description
Performs tests on the DRAM (image memory, bitmap memory) and optional memory on the fax control PWB.
Purpose
To check if reading and writing are performed correctly in respective installed memories.
Start
1. Press the start key.
2. Select the item to be set using the cursor up/down keys.
3. Press the start key.
The test executes.
Performing test on DRAM
1. Press the start key. The screen displays the test results as follows.
When the test result is OK:
If the test result is NG:
********: address
IMG: DRAM (image memory) error
B.M: DRAM (bitmap memory) error
If the test result is NG, reset by turning the main power switch off and on.
Performing test on optional memory
1. Press the start key. The screen displays the test results as follows.
When the test result is OK:
XXMB: Capacity of the option memory which is installed
If the test result is NG:
********: address
If the test result is NG (memory is not installed):
If the test result is NG (memory which does not have compatibility is installed):
If the test result is NG, reset by turning the main power switch off and on.
Completion
Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.
Maintenance
item No.
Description
Display
Description
BOARD MEMORY
Performs tests on SRAM and DRAM.
BOARD OP. MEM
Performs tests on optional memory.
TEST MEMORY
OK
TEST MEMORY
NG IMG 0x********
TEST OPTION MEMORY
OK XXMB
TEST OPTION MEMORY
NG XXMB 0x********
TEST OPTION MEMORY
NG
TEST OPTION MEMORY
INVALID MEMORY-TYPE
Содержание DF-420
Страница 1: ...SERVICE MANUAL Published in May 2009 3MZSM060 First Edition DP 420 PF 420 DF 420 JS 420 FAX System R ...
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