Strippit Houdaille  HECC80 Control Types,
Some Common Problems  &  Fixes,
and  Other Strippit Control Types.
Many People  (Salesmen,   Servicemen,  and  Customers)  Bandy-About the Name
"HECC80 Control",   which has become sort of a Generic Term for Older
Strippit CNC Controls.   But these People Rarely know what they are Taking About. 
Some People even call the  Ancient NC Hard-Wired  "A Controls",   HECC80's,
which they Certainly Are Not!

For You To Properly  Evaluate,  Operate,  &  Service  Your  HECC80  Control,
You Need To Know  Exactly What  TYPE  of  HECC80 Control  It Really Is!

HECC80  is a Acronym for  "Houdaille Electronics Computer Control"
and the 80 is from  Intel 8080 Microprocessor that was First Used in them.

There are  2 Main-Types of HECC80 Controls. 
For Clarity,  We will call the  First-Type   HECC80/1  Controls,
and the  Second-Type   HECC80/3  Controls.
---  Pre-Regulator Panel
Pre-Regulator takes Raw D.C. Voltage  (about 12 to 13 VDC)  from Floor-Plate Assembly,  Pre-Regulates it to a Clean Voltage  (about 8.5 to 9 VDC)  before sending it to Each Circuit Board's 5 Volt Regulator in Card-Cage Assembly.   Without Clean 5 volt Power to Chips,  anything can Happen.

The 2 Power-Transistors Mounted on Pre-Regulator Panel get  Raw DC Power through a Wire & Ring-Terminal on 1 of  2 Mounting-Screws.   Over time,   Insulation underneath Crumbles and Connections gets Loose,  Corroded,  and  Electrically Intermittent.    We put additional Nylon Insulator Washer on Screw,  Solder  (Not Crimped!)  a New Ring-Terminal on Wire with a Second Wire & Ring-Terminal to Loop-Over to other Mounting-Screw,  so Transistors Now get DC Power from Both Mounting-Screws.
Repeat for other Transistor.    Work Needs to be done by a  Good Technician.
First Type of  HECC80 Controls  are commonly called the  HECC80/1.  They are easy to distinguish by 1-Line Self-Scan Display Unit and small Keypad used for Data-Entry,  like Control pictured at left.

A Great Advantage for Strippit,  to Design & Manufacture Their Own Custom CNC Controls for Their Punch Machines. Houdaille Electronics was 5 miles up the road and was really Part of Strippit.

All of HECC80/1 Type Controls are closely related,  and many of their Circuit Boards are interchangeable,  But  Not  All!

Great effort was made by Engineering,  but this was a big project for a small Company, and development was a bit slow.  To put it in Proper-Context,  Strippit Shipped their CNC  HECC80 Control  5 years Before
IBM  shipped their  First PC Computer!


The Second Major Type of
HECC80  Controls We will call the
HECC80/3  Controls, 
though  HECC80/30x
would be more Accurate.

Easily Identified by the
12 inch  CRT Monitor Display 
and  Full Keyboard
as shown in the Picture at left.

That's the Machine Technologies Replacement Keyboard
shown in Picture,
as the Original Microswitch
Keyboard has Failed.

The Family of HECC80/3 Controls are also Closely related to each other.

There are
8 Types  of these Controls;
---  HECC80/3     First of this series of Control,  used only on Early FC1000/3 Machines.   Featured Intel 8085 Microprocessors on 2 CPU Boards in Slots 2 & 10,  CRT Display,  32K of Ram Memory with Battery Back-up,  full Keyboard,  and the  G.E. Model 3 Servo for High Axis Speed  (3000 IPM).  
Most of these Controls were later Retrofitted in the field to HECC80/302 Status,  to get the
Advantages of  Later-Control Type  Bubble-Memory Board.  
Around 30 of these Controls were build in 1981 to 1982.   Control uses  #401300-000  Schematics.

---  HECC80/302     Basically an Updated HECC80/3 Control used only on FC1000/3 Machines.  
L6 Prom Board was replaced with  #401350-000  256K Bubble Memory Board which provide 128K of Memory for Customer's Part-Programs and 128K for Machine & Control Executive Run-Programs that ran Machine.   Ram-Memory upgraded to 48K using 3 -- 16K Ram Boards in Slots L3, L4, & L5 on early Controls  and 1 -- 48K Ram in Slot L3 on later Controls.   Servo Drives upgraded from  G.E. 3 Drive to Much improved G.E. 3A Drive.    Built from 1982 to 1986,  uses #401473-000  Schematics.

---  HECC80/302 Conversion    A Ram and Bubble Board Upgrade to Convert,  in the field,
a HECC80/3 Control to a HECC80/302 Control.   Most HECC80/3 Controls were Converted to HECC80/302 Control status in 1982 to 1984 by Dandy Don Dahlin  (R.I.P.)  and his Merry-Men.   
But a few were Never Converted.   Conversion uses #401522-000  Schematics.   To further Confuse,  these is also a  HECC80/302 RETRO  Schematic  #401660-000  which adds More Updates like
Phase-Monitor,  Power-Fail Diode,  Etc.

---  HECC80/302A    A Updated HECC80/302 Control to Latest-Style Circuit Boards for Improved Reliability.   Used only on the  "Reliability"  Series FC1000/3 Machines which also had many Mechanical Improvements and began with Machine Serial #200.    FC1000/3's with 302A Controls are Best of HECC80/30x Control Machines.   Made 1984 to 1986,  uses  #401722-000  Schematics.

---  HECC80/304    Basically  HECC80/302 Control mounded in a Stand-Alone Cabinet with special Software & Proms and I/O boards for use on  FC1500/45 Punch & Plasma Machine.   Oddly,  Strippit built these Controls first using  G.E. Model 3A Servo-Drives And later-on using  Model 2 Servo-Drives,  which are Very Different!    Built 1983 to 1986,  uses  #401470-000  Schematics.

---  HECC80/306    Basically a HECC80/302 Control mounted in a Stand-Alone Cabinet with Special Software & Proms and I/O boards for use on  FC1250/30/1500  and  FC1250/30/1500 Laser-Tool Machines.    Used G.E. Model 2 Servos only.    Built 1983 to 1986,  uses  #401592-000  Schematics.

---  HECC80/BC   Basically a HECC80/302 Control mounted in a stand-alone Cabinet.  
Had a Special CRT Graphics Board,  Software,  and  I/O to run the Blanking Center Machine.  
Blanking Center was a  FC1250/30/1500 Table-Assembly Mated to a  Herr-Voss Shear  to make a
CNC Right-Angle Shear Machine for Stand-Alone Operation,  and  Punch-Machine Cell-Systems.
Used G.E.  Model 2 Hi-Ack Servo.     Built 1983 to 1986,  used  #401359-000  Schematics.

---  HECC80/2   There was also a couple of HECC80/2 Controls build around 1980. 
These were Special Controls that were Custom-Made for a New  Caterpillar Co.  Plant that was
being built with all Machines being DMC  (Central-Office)  Controlled. 
These Early Specials became the Basis for this  HECC80/30x  family of Controls.  
These Custom Controls probably do not exist anymore.    Schematics #???

Note,  All  HECC80/3 Controls had a Simple  "FAB-5"  Macro Programming Language Built-In.
Old Part-Programs Written using these Macro's will ONLY Run on  HECC80/3 Controls,  and these Macro's are  NOT Supported by Any other  CNC-Control  or  CAD/CAM  Programming System.

For More Common  HECC80/30x Control  Problems, 
Please Check-Out  the  "Bubble Board Adjustment & Fixes"   Web Page.

This page was last updated: February 1, 2023
Mounted on Painted-Steel "Heatsink"

What were those Idiots
Our Rework on the Floor-Plate  with
New  Stud-Diodes,
New  Insulators,
New  Aluminum Heatsink,
New  Soldered-On Ring-Terminals,
New Wires
         Original  Pre-Regular Panel
Our Rework,  New Wires & Connections
For Identification and Historical Purposes, 
This is one of The  NC
(Numerical Control)
"A"  Controls that Predates CNC  HECC80 Controls built by the now Defunct
Houdaille Electronics Division of the Defunct
Houdaille Corporation.

Again,  People Mistakenly call All of these NC Controls,
"A"  Controls,  Which They Are Not,  because they don't know any better, 
and don't really care.
The  A's  were Very Good NC Controls  (30S3,  30S4,  and  HC  are  Older  &  Much less desirable)  from that Pre-CNC Era,  and I still have a few that I keep running at some of my Customer's Shops. 

But their Time has Passed,  and are becoming Hard To Support.   There are only about
3 Servicemen  (Including myself)  here in the U.S.  (and None Overseas)  that I consider Competent to work on them.    If you are located far from us,  you will Not be able to keep them Running from a Lack of Good Service & Parts.  
For these reasons,  I Recommend my Customer's Scrap their  "A"  Control Machines,  and Upgrade to Newer CNC Control Machines,  which Offer More Features,  Better Reliability,  and  Better Service & Parts Availably.

And I Do Not-Recommend Anyone Buy a  NC  "A"  Control Machine these days,
No Matter how Enticing  "Cheap"  Price may be,  for the above Listed Reasons!
---  HECC80    This is Original HECC80 Control.   Only about 50 were made in late 1978 to 1979.  Had NO Memory,  it ran off of Paper-Tapes like a old NC Control!   This is because Marketing Dept. said  "Ship It" even though Engineering was still designing it!    Had 1 Prom Board for storing  Machine & Control Executive-Run Program.   Monitor Boards did not Monitor Control Voltages,  as they did not work yet.   This is why early Controls would Burn-Up Components like Tapereaders and Circuit Boards,  because Monitor Boards did Not Shut-Off Control when a Power Supply Failed,  like it was suppose to.   This is where HECC80 got its Bad Reputation & some Servicemen called it the
"Belch-Fire 80".    Control was Rapidly Improved by Engineering Dept.. and became a very good Control,  but Damage to it's Reputation was done.   Original HECC80's used  #400575-000
Schematics.   Most  Early HECC80's were later Upgraded with 2 Prom and 2 Memory Boards to HECC80/1 Status,  but there is still a couple of Original HECC80's around.

---  HECC80/1    This is an Improved & Upgraded HECC80,  built 1979 to 1981.    Had 2 Prom boards (HECC80/1 Software)  to hold more advanced Executive Machine & Control Run program.    Had 2 Memory Boards to allow Edit & Storing of Part-Run Programs,  and was a true CNC Control.    Later HECC80/1's had Resolver Excitation Board Upgrades from 2 MHZ to 3 MHZ for better Servo Tuning & Response & Positioning-Accuracy.    Many Internal Improvements were also made to Control for greater Control Reliability,  including a 6000 BTU Air Conditioner fitted to back of Control to get rid of Heat.    HECC80/1 Controls used the #400875-000  Schematic sets.

---  HECC80/102    An Updated HECC80/1 Control to allow faster Axis Speed and a higher Punch Hit-Rate.    Mainly a Software Change  (HECC80/102 Proms)  to allow higher hit-rate,  and new Position Comparator Board Changes for same reason.   Late HECC80/102 Controls had a 3 MHZ Sine-Wave Excitation Board which made a Big Improvement in Accuracy & Servo Response necessitated by HECC80 Controls being used on Laser Machines.   I often put HECC80/1 Prom Boards in HECC80/102 Controls because I find Machines work better at the slightly Slower Punch & Axis Speed.    HECC80/102  were built from 1981 to1986,  and used  #401290-000  Schematics.
The Last  HECC80/102 Control was on Last  FC1000/2 Machine S/N 454021086,  built in 1986,
which is interesting as the New-Model  FC1000/3 Machines were first shipped 5 years Earlier!

---  HECC80/750   A Repackaged HECC80/1 Control with only 2 Servo-Drives (X & Y Axis),
used only on FC750 Machines.   Has special Lamp & Control Driver  (-300 Type)  Board and special
FC750 Software on the 2 Prom Boards that will only work on  FC750  &  FC750/2  Machines. 
Built 1979 to 1980,  uses  #400727-000 Schematics.

---  HECC80/752   Updated HECC80/750 Control with Prom Software,  Position Comparator,  and Resolver Excitation Board Upgrades to make Machine Move & Punch Faster.    I prefer HECC80/750 Prom Boards in FC752 Machines,  because Machines work Better going Slower.   Built 1981 to 1986,  uses  #401275-000  Schematics.    I believe  Last  FC750/2 Machine was s/n 195050586 built in 1986.

---  HECC80/LC    Control for Laser-Center,  which was a FC1250/30/1500 Punch & Laser-Tool Machine,  but without the Punch & Turret,  and was a Laser-Only Machine.    Basically a HECC80/1 Control without Turret Servo Drive Electronics.    Special HECC80/LC  Prom Boards.
Only about 6 of these Controls were built.    Built 1980 to 1982,  uses #401239-000  Schematics.

---  HECC80/28    Final Type of  HECC80/1 Series.   This was Special Version of  HECC80/1  & HECC80/102 Controls for  Laser Tool Machines  &  Load / Unload Machines.   Also used for first few
(about 11)  FC1250/30/1500 Punch Machines with 33-Station Turrets as  New HECC80/306 Control being built for it,  was not yet ready.    Engineering needed to make Software Additions to  Machine & Control Executive-Run Program to add Laser Improvements,  but the 24K of Storage Space in  2 Prom Boards were not sufficient for this.   So 4K of Ram Memory Space was Stolen from  Ram #1 Board (Ram was now 20K Total)  and added to  Prom #2 Board for a total of 28K of Prom Program space,  hence  HECC80/28 Name.   Some earlier  HECC80/1  &  HECC80/102 Controls on Laser Tool Machines were Retrofitted in the Field to HECC80/28 Status.    Build from 1981 to 1986.    Use  HECC80/1  &  HECC80/102  Schematics  &  "Speed Attenuation Retrofit"  Print   #401352-888 on these Controls as Strippit  Managment  was Too-Cheap to make a set of  HECC80/28  Schematics!

Note,  All  HECC80/1 Controls had Simple  "Pattern-Repeat"  Macro Programming Language Built-In.
Old Part-Programs Written using these Macro's will  Only Run on HECC80/1 Controls,   and these Macro's are  NOT Supported by Any  Other CNC-Control  or  CAD/CAM Programming System.

---  "Control Shuts Itself Off 2 Seconds  After it is Turned-On"
This is the  Most  Common  HECC80/1 Control Problem there is. 

Master-Monitor & Slave-Monitor Boards Check All DC Power Supply Voltages Continuously after
Control is Turned-On.    If one or more Voltages are  Too-High  or  Too-Low,  Monitor Boards will turn
Control-Off to prevent possible damage.     After Control Shut-Off,  a Red LED-Light should be ON
on the Master-Monitor (S2-Slot)  or  Slave-Monitor  (S1-Slot)  Board.

If  LED-Light is ON  on the  Master-Monitor  Board,  Most Common Causes are;

1 ---   An Electrical-Short on Machine.    Check for Smashed No-Punch Zone Sensor on X-axis,  Other
Smashed Sensors & Switches,  Cut  or  Nicked Wires,  Etc.     Ohm-Out your  VDC  (Machine 24 VDC)
to LVR  (Low Voltage Return-Ground)  and  1DC  (Machine 12 VDC)  to  LVR  (Low Voltage Return
Ground)  on Machine for Short-Circuits.   These 2 Machine Power Supply Circuits should Ohm-Out
to at Least a Few Hundred Ohms.  If Close to Zero,  you have a Short-Circuit Somewhere on Machine
or  are reading a Short-Circuit back from a Bad Control Power Supply Board.

2 ---  Second Common Cause is a Bad  Power Supply #1 Board,  Power Supply #2 Board, 
Master-Monitor Board,  or  Slave-Monitor Board.     Our Advise --- Send  All  4 of these Boards, 
Located in Slots  S1,  S2,  S3,  &  S4  of Lower Cardcage,  in to  Machine Technologies, 
and we will Test,  Repair,  and  Update them  to Current Specifications.    

Note,   Make SURE You  Mark  &  Understand  How to Get All Front & Rear Cables Connecting
4  Boards Back to Correct Positions,  or  you will  Damage Boards at  Power Turn-On!
Recheck All Cables  Before  You Power-On!
See  2  Photos Below  For Cable Connection Help!

---  "SERVO DOWN"  Message
Make Sure Servo Fan is Blowing Air Up
through Servo Boards  or  Servo will Trip-Out  with a  "Servo Down"  Condition.

Look in Servo Drive Half of  Control Cabinet. There are 3 Servo Drives  (2 on FC750's),  see if there is a  Red-LED Light  "ON"  on one of the Servo Drives.    A  Red-LED Light is Located on
each  PWMC Servo-Control Circuit Boards.
If so,  you have a Over-Current Condition.

Turn-Off  AC Power to Machine,  then Disconnect the 2 Armature Wires going to that Axis's Servo Motor,  and  restart Control.
If LED does Not come on,  Motor is probably Bad.   We Stock Replacement Motors.

If LED still comes On,  1 or More of the  3  (or 2)  Servo Boards are Bad.   Send-In  ALL  3
(2 for FC1000 T-Axis)  Servo Boards  for that
Axis,  and we can Test  &  Repair Them.

All HECC80 Controls came with a Decitek Model 262 Paper Tapereader for Part-Program Loading and to Run Control Trouble-Shooting Test Tapes.
Most,  but not all,  of these Controls have been Upgraded In-the-Field to allow Part-Program Data to be Downloaded from a P.C. Computer,  which is much more convenient and reliable than Paper Tapes.   There are 2 ways to do this Upgrading;

1 --  Upgrade  CPU  &  2 Prom Boards  (HECC80/1 Controls),  or  Software-Upgrade  (HECC80/30x Controls)  to allow RS-232 Downloading directly from a  P.C. Computer's Serial-Port to the CPU's
J1 Connector using a Special Cable. 
  Please see Our Web Page
"P.C. Computer to HECC80 Communications"

2 --  Use a Tapereader Emulator.   Tapereader's Cable to Control is Unplugged,  then is Plugged into Special Connector Cable that goes directly into Emulator.    Emulator Imitates old Tapereader and CNC Control Never knows the difference.

Both Methods have Advantages & Disadvantages. Machine Tech can help you decide and Install.
If you no longer use your Tapereader,  then  (with the Control Turned-Off)  Un-Plug Cable from the Tapereader.   Then Wrap a couple of turns of Electrical Tape around it   (so No one will try to plug it back in)  and tuck it out of the way into wiring-harness.   Tapereader uses a Lot of D.C. Power and makes a Lot of Heat,  even if not being used.    By Unplugging it,  you reduce Strain on
Power Supplies,  put less Heat into Control,  and  help Preserve Tapereader for when you may
want it for Trouble-Shooting with Test Tapes.

Tapereaders get so Hot that you can Burn yourself just by touching Black Heatsink around Motor.
This is Normal!    But this Heat eventually will Burn-Up Motor.   Tapereaders are Expensive to Repair
or Replace.   If you still use your Tapereader,  then Mount a  "Muffin"  or  "Boxer"  Fan underneath it
with a L-Bracket,  with Fan Blowing Upward over the Motor Heatsink. 
This will Remove Excess Heat,  and help Prevent Tapereader Failure from Motor Burning Out.
The  "A"  NC Control Series
HECC80/1 Control   Common Problems  &  Fixes 
---  "CHECKSUM ERROR"  on Self-Scan Display as soon as you Turn-On Control.
     Almost Always Caused by Failing Prom Boards.   These Store the Executive-Run Program which
      Runs your CNC Control.   The ONLY Solution is to Send-In  Prom #1  and  Prom #2 
      (in Slots #3 & #4)  Circuit Boards for Repairs and Updating to the Latest Software Revision.
      Also,  Send-In  Front Panel Controller Board  (Slot #7)  for a Up-Date that aids Prom Boards.

      On rare occasions,  could be caused by a Bad  Power Supply #1 Boards,  or  anything else
      causing Intermittent  or  Bad Power from the Power Supplies.
Clean the Circuit Board Finger-Contacts with
Rubbing-Alcohol  and  Cotton Q-Tip  Type Swabs Only!!!
  Rub Circuit Board-Contacts with Anything Remotely  
  Abrasive!   Or  You Will  Rub-Off  the  Very
  Thin  Gold-Coating  and  Permanently  Ruin Circuit Board!!!
I have Updated this 
"A"  Control
at my Customer
H & W Metal in
Charlotte  NC, 
by removing the Original Remex Tapereader,  and Retrofitting a TapeTwin Emulator Computer so that it can Read & Store Programs from Disks.
About 400 of these  NC  "A"  Controls  (and their Predecessors,  the  "30S3",  "30S4", and "HC")  were built from 1975 to 1979.  There were other,  older NC's built in the 1965 to 1975 Ere,  but I will not cover them,  as they All Should Be Scrapped by now.

The First FC1000/1 Machines,  build in 1975 & 1976,  had the First Version in this Control Series,  the "30S3".   About 30 of these Controls were build.   They all had the Westamp Servo PWM Drives,  which had a tendency to Burst into Flames,  so Strippit was forced to come out with a "Conversion" Kit.   To do Conversion,  we Unbolted Servo Cabinet from the Control Cabinet,  and bolted-on a New Servo Cabinet that used the General Electric Hi-Ack Servo Drives,  which worked quite well.
Most of these early 30  FC1000 Machines had their Controls Converted,  but not all.
30S3 Schematics are  #400003-000.   Addition Conversion Schematics are  #400459-000.

The  "30S4"  Control was similar to 30S3,  but it always came with Large  G.E. Hi-Ack Servo Drives,  and was used on larger  FC1250/30  and  FC1250/40  Machines only.
Built 1975 & 1976.   Schematics  #400060-000.

This  "30S3 Conversion"  and  "30S4" Controls were Improved & Updated,  then
became the  "HC" Control (Houdaille Control).   Also known as the  "Compatibility"  Control,  as they were used on Both the  FC1000  and  FC1250  Machines. 
These Controls were made in 1976 and 1977.    Schematics  #400200-000.

The "HC" Control was again Improved & Updated,  and this became the  "A"  Control,
the Final Version in this NC Hardwired Control Series.    Build 1977 to 1979.
Used  #400269-000 Schematics.

Above NC Series of Controls were all  "Hard-Wired",  and were built with
Hundreds of  I.C. Chips connected with Thousands of Blue  "Wire-Wrap"  Wires. 
Controls had No CPU or Computer or Memory of Any Kind.  These Controls Operated by reading the X, Y,  and T  information 1 Block at a Time from a Paper Tape,  acting on this Information,  then reading next block to Repeat this Cycle over & over again.
Fanuc Controls
At Right is the  "General Numeric  GN6 Control".
It Says  General Numeric,  but  Every  Part  is  Fanuc!
Control used Reliable Fanuc  D.C. PWM Servo Drives which were built into Control Cabinet.

This was a very Popular CNC Control that was made through the Early 1980's.   It was a Good Control  and Reliable,  but was a Bit Intimidating to Operate,  as it has  Zillions of Knobs,  Switches,  Buttons,  and Lights,  so that it  Looked like  Tokyo at Night!

Strippit started Phasing-Out their HECC80 Controls in 1986,  and Switched over to GN6 Controls on all FC1000/3 Machines,  and later on,  FC1250/30/1500 Machines and their other Big Machines.

Most of the Little Strippit Machines of this Era,  like
FC630R & FC1000R,  had Apple Mac & Windows P.C. Computer Controls that  Strippit  Hacked-Together. These have become Nightmares,  as Many Parts are No Longer Available,  and Strippit Won't Support them anymore.   They have become So Bad,  that Strippit had to offer a Fanuc Retrofit,  for about  $80,000.

Beware   &   Avoid   ALL   Strippit's
Apple Mac  &  DOS  &  Windows  P.C. Controls!

"R" Machines were Also Offered with Fanuc Controls
as Extra-Cost Option instead of  "Mac" Control.
But Most Companies Went Cheap and did Not get the  Fanuc Control Option,  much to their Regret Now.   FC630R & FC1000R with GN6 or OP Controls are fairly
Good Machines,  but not many were built.

Di-Acro & Strippit also used GN6 on their Junk CAP1000  &  CAP1250  &  HPM1000  Machines they made,  until late 1980's when Fanuc Discontinued GN6.   Then Strippit made a few more  CRAP1000  & CRAP1250  Machines with Fanuc OP-Controls,  until  Finally Discontinued these Machines around 1990.
I will briefly talk about  Fanuc  CNC Controls as they are Now the World Leader in CNC Controls & Servo Drives.    This is because  G.E.'s   "Neutron" Jack Welsh   Capitulated,  and  "Nuked & Closed"  All  General Electrics's  Control & Servo Drive Manufacturing Factories,  Giving-Up  Another Technology that was Invented in the USA, 
and  Allowing the Fanuc Co. to Win The CNC Control Wars. 

Fanuc is now the Worlds Biggest Control Maker,  and  No One Else is Even Close
in Size and Scope.    So,  Like them or Not,  They are Here.    Thanks  "Neutron Jack".

When Fanuc Originally Set-Up their American Division,  they called it  "General Numeric",  a  Nice American Sounding Name.    This was to Avoid Japanese Sounding  "Fanuc"  Name and any Prejudices that may have gone with it.    There was Much Government Scrutiny in the  Early 1980's as Japanese were Busily Taking Over  U.S.  Machine Tool Industry.    They have pretty well Completed this Mission now.
G.E.  Partnered-Up with Japan's Fanuc Co.
(Mighty G.E.  Becoming More like Fanuc's Lackey-American Marketing Arm, Than a Real Manufacturing Co.)  and the General Numeric Name Facade was Dropped. 
They then became the  "GE Fanuc"  Co.

Next Generation of Fanuc Control was called the  "O" (Zero),  and  Punch-Version was called the  "OP".    It was basically just
a New & Improved GN6.

It had  7  "SoftKeys"  under  CRT Display
like  Strippit  HECC80/30x  Controls
had  Years  Earlier
a Technology that made Control
Much Simpler to  Operate  &  Use.

Control used  A.C. Servo Drives,  which are  Improved Technology over older D.C. Drives.

These Controls were built through out the 1990's in several Versions and all are Good Reliable Controls.    Recommended.
The OP's have now been Replaced with Next Generation of Fanuc Controls,  which are called the  "Oi".    An Evolution of the older OP's,  "i"s  have some Nice features like Built-in Disk Drives,  and  LCD-Displays instead of older CRT-Tube Displays.   
They should be even better than the OP's,  and are Recommended.

However,  How Good the Control Works Depends on How Good of a Job Machine Manufacture Does Integrating Control Interface to Their Machine.  

There are Many Complaints that LVD Strippit is Not Spending Enough Engineering Time on This Critical Interfacing,  Which is Causing
Many User  Operation  &  Maintenance  &  Troubleshooting  Issues.
I Don't like the Fanuc Co.

They are Become Arrogant from their Large Market-Share.   Control & Servo Repair Part Pricing is Outrageous.   Some Fanuc's A.C. Servo Motors are Priced at  $10,000 to $25,000  with sometimes Months Delivery!   What are You supposed to do with Your Production while Waiting Months?   Older Fanuc Control & Servo Drive Parts are becoming  "Unavailable".   I think they are trying to Force You into Buying a New Machine with a New Fanuc Control on it!    This is Certainly Not Very World Class.

Fanuc is Very Secretive and can be Difficult to Work-With.
I have Never met Anyone who has Even Seen Fanuc Control Electronic Schematics.

Having said all that,  they have Won much of Worldwide CNC Control Business.
Fanuc makes Good Reliable Controls,  are one of  Biggest CNC Control Manufacturers
in the World,  and  have a World-Wide Support Network.

And So,  Sadly,  as there are now Damn Few Alternatives,
(Consider using  Bosch  &  Siemens Controls,  but are also  Expensive  &  Secretive!)
I would be Hesitant to Buy Any New CNC Machine unless it Had a Fanuc Control.
---  Incorrect Heatsink
Some Chowder-Head at Strippit Designed the Floor-Plate,  at Bottom of Control,  with
2 Stud-Diodes Mounted on a Painted-Steel Heat-Sink that Does Not Dissipate Heat!    Diodes get Hot enough to Burn-You if touched!   This Heat Causes Diodes to Fail,  and also Burns & Corrodes the
2 Wire Ring-Terminal Connections to Diodes.    We Replace with a Larger Aluminum Heatsink,  and Replace Old Wiring with with  New Wires  &  Soldered-On Ring-Terminals. 
This Work Requires New Parts  and a  Technician that Knows what he's doing!
  Mount 2 Fans,
Blowing Upward,
under the Cardcage.

If you have them,
Check them Regularly
to make sure that they
are Working OK.
as they do
and Stop!
  Mount another Fan,
under the

Center the Fan,
Blowing Upward,
so that the Air-Flow
Blows Over the
2 Black Heatsinks
on the
Power Supply
#1   &   #2
Circuit Boards.
McLean  6000 BTU Air Conditioner Mounted on Back of HECC80/1.
Also Note our Concept of a P.C. as a Local File-Server At The Control, with  All  P.C.'s Power-Plugs to
Power-Strip Inside Control.
Kooltronic 6000 BTU Air Conditioner Mounted on Side of  "A" Control.
Also Note P.C.-Based
Tape-Reader Emulator,
Plug-In all P.C.'s Power-Plugs to
Power-Strip Inside Control.
Note!   Air Conditioner's Draw a Lot of  A.C. Power!
Older Strippit Machines had Only a  3KVA  Step-Down Transformer,
to Provide 120 VAC,  that Can Not Handle the  Extra 15 Amp. Current Draw.
Wire These  A.C. Units to an  External Power Source.

If your Machine has the  5 KVA Transformer,  it will handle the Extra Power,
But Run a Power-Cord all the Way back Directly to the Transformer itself!
!!! Note !!!
Many CNC Controls,  like the G.E. 1050's,  and Some of the Fanuc's,
Have Machine Parameters, MDI Data, and other Control & Machine Set-Up Data,
Stored in  Battery  Backed-Up  Memory.

If you Buy a Machine that has Been Stored for a Long Time,
Like in a Dealer's Warehouse,  Without  A.C. Power Being Connected to the Control,  The Batteries will Run-Down,  And   All This Data Will Be Lost!!!

Your  Control  &  Machine  Will  NOT  Run Until All
Parameters  &  Set-Up  Data  Have Been Correctly Restored!

This Data is Sometime Very Hard,  or  Even Impossible to get from the Original Machine Manufacturer.   Make Sure you get  ALL  Original Set-Up Sheets, PaperTapes,  or  Data Disks,  To be able to Reload This Data!!!
Get In Writing a Iron-Clad Guarantee that Machine will Run when you Buy it!

To Strippit's Credit,  No HECC80 CNC Control has This Problem
as their  Executive Run-Data  is Stored  in 
Non-volatile  ROM-Chips  or  Bubble-Chips.

  Note,  The Failure Modes Here Are;
1 --  Stud-Diodes CR1 & CR2 Overheat & Fail,  usually Causing a Short-Circuit and Blowing Fuse FU1.
2 --  About 50% of the Time,  the Blown CR1 & CR2 will Also Cause The Diodes  CR3  &  CR4  to Fail.
3 --  The Blown  CR3  &  CR4  Diodes will then Cause the  Power Supply #1 Board  in  Slot S4 to Fail.

We have  a Repair-Kit Available that Replaces the  Old Diodes &  Heatsink &  Wires with  New Parts.
And if the Power Supply #1 is Bad,  We Can Quickly Repair it in Only 1 to 2  Days Turn-Around Time.
Our Diode Repair Kit with
New  CR1  &  CR2  Stud-Diodes
Mounted with  New Insulators on
New Aluminum Heatsink
with  New Wires
&  Ring-Terminals.

Also Includes
New  Heavy-Duty
CR3  &  CR4  Diodes.
The  Strippit  "Crappy"   Apple-Mac 
and   IBM-P.C.  CNC Controls
After Strippit Quit Designing & Building their HECC80 Controls,  they bought and used Fanuc Controls for their Big 30-Ton Machines.    But,  I guess to try to lower costs,  Strippit could Not Resist getting back into making Their Own CNC Controls again.  

So in the late 1980's to 2000,  Strippit made their Own CNC Controls again using P.C.'s,  which were used on their Cheaper Machines.    First with the  Apple Mac Computers,  and later on,  a Second Type using  IBM  PC  Computers,  some running under 
DOS  (Disk Operating System)   and   some running   Old  Windows 95.

The Mac Controls were used on Many Versions of  "R"  (Rear Address)  and  20-Ton Bridge-Frame FC1250 Machines,  such as the  FC1000R,  FC1000XP,  FC1250/20,  Etc.    While I tell people to Avoid these Machines,  Don't Misunderstand me.   They Were actually quite good Light-Duty Machines and Mac Controls worked quite well also.

The Problem is,  these  Mac Controls are now  30+ Years Old,  and are  NO  longer Supportable!    If your Mac goes Bad,  you Can NOT go to Store and buy a New Mac
as it will NOT Work.   You need to go to Flea-Markets & Ebay to try and find Exact Same 30+  Year Old Mac-Type  (Like a Mac-Si)  that  YOUR Control was build with.
And of course,  you are buying someone else's 30+ year old Worn-Out Junk Computer.

It gets Worse.    Inside Control & Mac Computer,  Strippit used several Circuit Boards like  Motion Control  and  P.A.C. Boards,  that are  NO  Longer Available  ANYWHERE!
Strippit will,  for a Few Thousand Dollars,  MAY Exchange These Boards.
So You Get Someone Else's Problem Trade-In Boards that Strippit took a stab at repairing  and  will probably give You a New Set of Problems!   I hear this quite Often.

I get Calls every week from Desperate people looking for these Boards or Repairs.   Sorry,  I have None of these PC Control Boards  and  I do Not Repair these Boards.

As Strippit used  Many Different versions of  MAC's,  and Servo Drives,  and  I/O Circuit Boards,  and  Software's,  Etc.,   The Knowledge to Correctly even work on these Controls is also being  Lost as Time Marches On.

There was a Customer who called In Strippit several Times to Fix his  FC1000R MAC Control,  but they could Not Repair it,  and  Customer Said Strippit just wanted him to Buy a New Machine.  So he took Strippit's Advise and Bought a New  Amada  Machine.

After Mac Controls,  which worked well when new,  Strippit came out with  IBM PC CNC Controls in  Mid-1990's.   These Controls were made in much smaller numbers,  were Not Documented Well,  there is little Repair Expertise available,  and
are  Even Worse  than  MAC Controls!!!    AVOID  THEM  ALL!!!

Again,  Problem Here is  Strippit's  Poor Repair Parts Availability  and  Poor Support 
and  Poor Service  on  Any Machine  or  Control  that is a few years old.
Strippit's  Apple-MAC CNC Control
Strippit's  IBM-P.C. CNC Control
Strippit's  Apple MAC-Control on a  Strippit  FC1000R Machine
---  HECC80 Controls Hate Heat!
First generation Control Cabinets had just Door Exhaust Fans.   Then Strippit tried Heat-Exchangers which were just Air-To-Air Radiators.   Then they Finally quit being Cheap,  and installed  6000 BTU Commercial Grade CNC Cabinet Air Conditioners.   These Greatly Improved Reliability.    If your Control has a Air Conditioner,  make sure it Works!    If your Control does not have one,  take off Door Exhaust Fans,  Seal-Up the Cabinet,  Insulate Doors with  4' x 8' Foam-Sheets from a Building Supply Co.,   and  install a  Commercial  CNC Cabinet  Air Conditioner!

Do Not get Cheap,  and install a Cheap Window  A.C. Unit!   They are Impossible to Mount Properly,
they Spray-Water into Control,   and  Do Not Circulate Air Properly Inside Control. 
We can Drop-Ship Proper Air Conditioner Units for you to install.    See  A.C. Unit  Photos Below.

Early HECC80's did Not have Fans Under Cardcage.    If you do Not Have These Fans,  Make a Bracket,  and  Mount  2 or 3  --   4 Inch  "Muffin"  or  "Boxer"  Fans Under Cardcage Blowing Upward!

Also,  Make another Bracket  (We use 2 Pieces of Angle Aluminum)  and Mount Another 4 Inch Fan Under the  Power Supply #1   &   Power Supply #2  Boards,   Blowing Upward!
3 ---  Other Possible Causes are;
       ---  Problems with Raw-DC Supplies on the Floor-Plate.
       ---  Problems with the Pre-Regulator Panel.
These Problems Probably Will Require a  Experienced Serviceman  to Troubleshoot  &  Repair.
General Electric  CNC Controls
In the Late 1970's and Early 1980's,  General Electric was growing rapidly, 
and needed Turret Punch Machines for it's Manufacturing Plants.   

G.E.  Insisted that all CNC Machines that they Bought have  G.E. Controls on them.
So over the Years,  Strippit made a couple of Dozen  "Special"  FC1000/2  and FC1250 Machines with  G.E.  1050  CNC Controls.  

These  G.E. Machines did not run as well
as HECC80 Control Strippit Machines, 
as the 1050 was a Generic Control, 
while the HECC80  was Custom Designed just for Strippit Machines.   

Documentation and Support was also
Very Weak from Strippit for G.E. Machines.

These G.E. 1050 Controls,  of Course,  used the  G.E.  Model 2  Servo Drive System.  

Here at Machine Technologies,  we Stock All of the G.E.  Model 2  &  3  Hi-Ack Servo Boards & Components. 
See More At Our Servo Drive WebPage:
  "G.E.  Servo Drives"

Most of these old  G.E.  Strippit Machines have now been Scrapped.   
If you see one  For-Sale,   Don't Buy It!
In the early 1980's,  Strippit also used another Version of the G.E. Model 1050 Control on their Model  FC75/30 Turret Punch Machines.   These also used
G.E. Model 2 Hi-Ack Servo Drive System for the  X & Y  Axis Motor Drives.

G.E.  got in Bed with Fanuc,  Closed all their U.S. Control Manufacturing Plants,  so Support is Weak on these Old  G.E. Controls.   I would Not buy a Used CNC Machine that used an old G.E. Control.
Earlix Controls
In Mid 1980's to Early 1990's Strippit used a  Japanese  Earlix Control  for their  AG (Auto-Gageing) Single Station Punch Machines.   They used
Earlix  Model 2KH-700  Controls.
Earlix has  Gone  Out  Of  Business
and there is  No Parts  &  No Support available,  so  I would
Avoid  These  AG  Machines!!!

One Failure Modes of Earlix Control was Switch Overlay on Top of Control.    Elizabeth at Cobra Ind.
has Made New Switch Overlays Available for this Control, 
Contact Her at Their Web Site;
           "Cobra Industries"
  If  LED-Light is ON,   on the  Slave-Monitor  Board,    Most Common Causes are;

---  A Short-Circuit on 1 of  Control Circuit Boards in the Upper Control Cardcage.
A Technician can Probe the 16 Test Points which will Point to the Board or Power Supply at Fault.
There is More Information in Control Schematics and Control Maintenance Manual on how to do this.
If you do  Not Understand how to do this,  you are  Not Qualified,  get a  Experienced Serviceman!
A Bad Circuit Board can be Sent to Us at Machine Technologies Co.  for Fast 48 Hour Repair Service!

---  Short-Circuit on  Capacitors,  Tapereader,  Display,  or  Other Component on Control Front Door.

Oi-PC  Control
on a
Parma 1212

180i  Control
on a
Global 20