Maintenance
Description
item No.
3JF
1-3-36
U894
Performing board test
Description
Performs tests on the DRAM (image memory, bitmap memory) and optional memory on the fax control PCB.
Purpose
To check if reading and writing are performed correctly in respective installed memories.
Start
1. Press the start key. The screen for selecting an item is displayed.
2. Select the item to be set using the up/down cursor keys.
3. Press the start key.
The test executes.
Performs tests on SRAM and DRAM.
Performs tests on optional memory.
Display
BOARD MEMORY
BOARD OP. MEM
Description
Performing test on DRAM
1. Press the start key. The screen displays the test results as follows.
• When the test result is OK:
TEST MEMORY
OK
• If the test result is NG:
TEST MEMORY
NG IMG 0x
∗∗∗∗∗∗∗∗
********: address
IMG: DRAM (image memory) error
B.M: DRAM (bitmap memory) error
To return to the screen for selecting an item, press the stop/clear key.
Performing test on optional memory
1. Press the start key. The screen displays the test results as follows.
• When the test result is OK:
TEST OPTION MEMORY
OK XXMB
XXMB: Capacity of the option memory which is installed
• If the test result is NG:
TEST OPTION MEMORY
NG XXMB 0x
∗∗∗∗∗∗∗∗
********: address
• If the test result is NG (memory is not installed):
TEST OPTION MEMORY
NG
• If the test result is NG (memory which does not have compatibility is installed):
TEST OPTION MEMORY
INVALID MEMORY-TYPE
To return to the screen for selecting an item, press the stop/clear key.
Completion
If the test result is OK, press the stop/clear key at the screen for selecting an item. The screen for selecting a
maintenance item No. is displayed.
If the test result is NG, reset by turning the power switch off and on.
