Mec 3072ES, Service And Parts Manual

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"3072ES / 3772ES / 3772ES HD" Service & Parts Manual October 2008
Page 4-29
POWER WIRING Messages
The following are “power wiring” HELP messages – problems have been detected which are likely
due to power wiring errors:
FAULT: CAPBANK VOLTAGE TOO LOW - CHECK STUD WIRING! -------------- Flash Code: 7/7
• The voltage o n the B+ s t u d of the co n t r olle r (co nn ected to a n i n te rn al voltage s tabilizatio n capacito r ba n k) i s
too low whe n the li n e co n tacto r i s off (a p r e-cha r ge ci r c u it i n the mod u le n o r mally applie s app r oximately
32 volt s to the capacito r ba n k).
• Check the 300 amp f us e, li n e co n tacto r o r powe r wi r i n g fo r e rr o rs . Al s o check DC moto r fo r i n te rn al
g r o un di n g.
OTHER Messages
The following are other HELP messages:
SOME BIG BAD PROBLEM! -------------------------------------------------------------- Flash Code: 9/9
• Thi s me ss age s ho u ld n ot occ ur !
FACTORY OVERRIDE -------------------------------------------------------- Flash Code: (fast flashing)
• Whe n the co n t r olle r i s fi rs t s hipped, p r io r to i n itial calib r atio n , it i s co n fig ur ed i n a s pecial “facto r y ove rr ide”
s tate. I n thi s s tate, n o n e of the n o r mal s h u tdow ns o r i n te r lock s will occ ur – the vehicle ca n be f r eely lifted/
lowe r ed a n d d r ive n i rr e s pective of a n y calib r atio n n eed s , vehicle tilt, etc.
• A s s oo n a s a n EZ-Cal i s co nn ected to the co n t r olle r , the facto r y ove rr ide s tate i s e n ded.
• If calib r atio n doe s n ot occ ur , the n the facto r y ove rr ide s tate will r ec ur if the EZ-Cal i s di s co nn ected a n d powe r
i s s witched off/o n .
IMPORTANT: Never use a vehicle in factory override; this state is ONLY
intended for use during manufacture! While factory override
is active, the LED is rapidly flashed on/off.