Service manual

3. DIAGNOSTIC CHECK
Service Manual BSM-4100 3.43
COM Check Menu Items The COM check menu items check the communication with peripheral units such
as recorder and external equipment.
WS RECORDER Check
This item checks the dual port RAM in the ASIC (RACOON) and the other recorder
control block with the communication between the host CPU and local CPU on the
MAIN board. The built-in recorder is one of the peripheral units for the host CPU.
Physically, both the recorder control block and host CPU are on the MAIN board.
Procedure to Start the WS RECORDER Check Program
1. To select the WS RECORDER Check, touch the “WS RECORDER CHECK”
key in the COM CHECK column.
The program checks the function of the dual port memory which communicates
with the host CPU and local CPU of the recorder control block and checks the
other functions of the recorder control block.
2. Touch the PRINT TEST PATTERN “START” key. The host CPU
communicates with the local CPU so that the above test pattern is recorded on
the paper.
The “START” key is highlighted to indicate the process of checking.
Until you touch the “STOP” key, paper runs continuously.
3. If the magazine is open or there is no paper, these status are displayed on the
screen.
If the status is not displayed in such condition, the MAIN board or recorder
unit will be faulty.