SYSMEX CA-500 - Operation Errors; Interrupt by Mechanical Stop

6.11 OPERATION ERRORS
6.11.1 Interrupt by Mechanical Stop
Monitor Timing: During operation
Monitor Method: Monitors Mechanical Stop Switch ON or OFF
CA-500’s Action: Emergency stop
(1) Probable Cause
1. The mechanical stop switch has been pressed.
2. Failure of the mechanical stop switch.
3. Failure of PCB No. 9265
4. Failure of wiring cord (for printer relaying)
5. Failure of PCB No. 6362
(2) Confirmation by the operator
1. Confirm whether the mechanical stop switch is pressed or not.
(3) Confirmation by Service Engineer
Suspect Part Test Points Expected Value
Mechanical Stop Switch CN3 (PCB No. 9265) pin 1 and pin 2 5 V ± 0.25 V, when the mechanical
stop switch is not ON
PCB No. 9265 CN1 (PCB No. 9265) pin 3 and pin 4 5 V ± 0.25 V, when the mechanical
stop switch is ON
0 V, when the mechanical stop
switch is not ON
Wiring Cord
(for printer relaying)
CN107 (PCB No. 6362) pin 9 and pin 10 5 V ± 0.25 V, when the mechanical
stop switch is ON
0 V, when the mechanical stop
switch is not ON
+ 5
GND
Figure 6-3: Mechanical Switch ON
CA-500 Series S/M 6-36 Revised December 2001 8