FORMA: Service & Maintenance manual - rev. 3.0
Page 6.31
(4) Check for the click of the relay.
(5) Place the tester probes between pins 1 and 2 of connector J1 on the driver board. Press the “↑”
or “↓” key: the absolute measured value should be approximately 20 Vdc.
(6) Place the tester probes between pin 7 (signal) and 12 (ground) of connector J6 on the driver
board. The measured value should be approximately 0 Vdc if the circuit board has detected an
alarm condition.
(7) Place the tester probes between pins 5 (signal) and 6 (ground) of connector J1 on the driver
board. There should be a square wave signal alternating between 8.8 and 11.4 Vdc. Using a
tester, the reading should be approximately 10 Vdc.
(8) Place the tester probes in series with the motor cable. Press the “↑” or “↓” keys: the steady-
state measured value should be less than 4-5 A.
(9) Place the tester probes between pins 9 (signal) and 11 (ground) of connector J6 on the driver
board. There should be a square wave signal alternating between 0 and 5 Vdc. Using a tester,
the reading should be 2.5 Vdc.
(10) Place the tester probes between pins 4 (signal) and 5 (ground) of portable connector CN28.
There should be a square wave signal varying alternating 0 and 5 Vdc. Using a tester, the
reading should be approximately 2.5 Vdc.
(11) Place the tester probes between pins 9 (signal) and 11 (ground) of connector K4 on the CPU
board. There should be a square wave signal alternating between 0 an 5 Vdc. Using a tester,
the reading should be approximately 2.5 Vdc.
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