Copystar Ri 2530, Service Manual

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Maintenance
Description
item No.
3DB
1-3-42
U894 Performing board test
Description
Performs tests on the SRAM, DRAM (image memory, bitmap memory) and optional memory on the fax control
PCB.
Purpose
Used 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. Press the appropriate item.
The test executes.
Performs tests on SRAM and DRAM.
Performs tests on optional memory.
Display
BOARD MEMORY
BOARD OP. MEM
Description
Performing tests on SRAM and 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 DRAM IMG 0x
∗∗∗∗∗∗
******: address
DRAM IMG: DRAM (image memory) error
DRAM B.M: DRAM (bitmap memory) error
SRAM: SRAM error
To return to the screen for selecting an item, press the stop/clear key.
Performing tests 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
• If the test result is NG:
TEST OPTION MEMORY
NG DRAM B.M 0x
∗∗∗∗∗∗
******: address
• If the test result is NG (memory is not installed):
TEST OPTION MEMORY
NG DRAM B.M
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 main switch off and on.