ZF CruiseCommand 785CE, Инструкция по установке и устранению неисправностей

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TROUBLESHOOTING TRAIN-156 Rev.B 11/01
Page 17
priate A/D (Analog/Digital) value for the current position of the
Control Head’s lever will be shown, as in the examples below:
E) If the A/D value is 900 or greater, one of Error Codes 13- 20 will be
shown.
F) If the A/D value is greater than 900, but less than 990 the following
may be the cause:
• The Control Head’s potentiometer is out of calibration.
• The potentiometer is defective.
G) In either case, it is recommended that the Control Head is replaced.
H) If the A/D value is 995 or higher, most likely the JUMPER between
the Control Head’s pins 3 & 5 (Right Hand) or 3 & 7 (Left Hand) is
disconnected. If in addition to the A/D value being 995 or higher,
the LED is not lit and no audible tone is heard, the red wire con-
nected between pin 3 of the Control Head and pin 5 of the Proces-
sor is open.
I) If the A/D value is 100 or less, one of Error Codes 21- 28 will be
shown.
J) If the A/D value is less than 100, but greater than 75, the following
may be the cause:
• The Control Head’s potentiometer is out of calibration.
• The potentiometer is defective.
• A high resistance connection exists on the green wire between the
Control Head and Processor.
Figure 14: Display Stations A/D Value