DEIMOS CONTROLLER #0             (DMC-1540-72 Motion Controller)   Serial Number KK-1611

    AMPLIFIER (0A)       (ICM-1100 / AMP-1140 Rev. C)        Serial Number EE-1852
    March 17, 2000
        Installed anti-surge modification.
 
 
 

DEIMOS CONTROLLER #1            (DMC-1580 Motion Controller)    Serial Number KK-0386

    AMPLIFIER #1A            (ICM-1100 / AMP-1140 Rev. B)        Serial Number EE-1712
    May 16, 2000
        Installed anti-surge modification.

    AMPLIFIER #1B                (ICM-1100 / AMP-1140 Rev. C)        Serial Number EE-2979
      Date unknown
        Installed anti-surge modification.
 
 

DEIMOS CONTROLLER #2             (DMC-1580 Motion Controller)    Serial Number KK-5106

Jan. 10, 2000
    Working on motor run-away on power shutdown problem:

•  Found that RP42 640 Ohm resistor Pack is missing. Unexplained.

•  Note that "ICM-1100 Connections" sheet does not show that there is a driver IC (7407 labeled as U1) between the terminal (#3, #7, #11....) and the connectors J2 and J5. This IC acts as a voltage level shifter, and drives the enable signal.(AENX, AENY,...) at a higher voltage (18 volts) level. When AC power is lost, this open collector driver shuts down before the 18 volt supply goes to zero volts. This loss of function allows the enable (Output) to be pulled up, re-enabling the amplifiers and driving the motors without logical control until the 18 volts drops to zero.

    AMPLIFIER #2A       (ICM-1100 / AMP-1140 Rev. C)        Serial Number EE-7400
        Jan. 21, 2000
            Installed anti-surge modification.

    AMPLIFIER #2B       (ICM-1100 / AMP-1140 Rev. B)        Serial Number EE-1732
        Jan. 21, 2000
            Installed anti-surge modification.
 
 

-AMPLIFIER (Spare)       (ICM-1100 / AMP-1140 Rev. C)        Serial Number EE-3055
   This amplifier is probably in Hawaii.
    Feb.1, 2000
        Installed anti-surge modification.
        Installed newly anodized cover/panel