This is a text file on how to put the SmartWatch Clock board in 
the Model 4 with a Hi-Res graphics board.  First you have to    
purchase the SmartWatch from your local Radio Shack store.      
Stock number 25-1033. Also required is the program              
"SMTWATCH/ARC" found on this board. Unarc SMTWATCH/ARC and      
follow the instructions given therein. If you have a Hi-Res     
board for your Model 4, you must follow these                   
added instructions as well.                                     
                                                                
IF YOU ARE A NOVICE, PLEASE GET ASSISTANCE FOR THIS!!           
                                                                
      First, Remove the screws on the bottom of the Model 4     
and remove the top, unplug the large cable and the ground cable 
from the monitor and set the monitor (top part of computer)     
aside out of the way. Next, remove the shield from the back of  
the computer and set it aside, Next  remove the Hi-Res board to 
get to the "C" ROM chip. It should be U70 on the motherBoard,   
now CAREFULLY remove the mother (large) board that the Hi-Res   
board plugged into. You have to remove the cables on the sides  
of the board plus the ones along the top. To remove the cables  
on top, grab hold of the plastic cable in the center and pull   
gently toward yourself. They should come out with little        
effort. Now remove the cables on the top right of the main      
board in the same manner, except you grab them on the sides of  
the connectors (never pull on the wires!). You also have to     
remove the cable that goes to the sound board, it will come off 
like the ones on the right. The last cable you have to remove   
is the keyboard cable, remove the 2 screws that hold the shield 
around the connector and pull it off.                           
      Now, with all connecting cables removed, remove the       
Phillips-Head screws that hold the board in place. Once this    
isdone, Lift the board out VERY CAREFULLY! Set the board on a   
not static surface and remove ROM C from the board by prying on 
BOTH ends carefully (one side at a time or both sides at the    
same time). Put the ROM C chip in the black foam-rubber that    
the Smart Watch is packaged in (it is a special anti-static     
foam rubber). Now get out your soldering gun (small) and        
solder-sucking tool. Carefully remove the empty I.C. socket     
that the ROM C chip WAS in. When you have it out and all the    
holes cleared out of excess solder, CAREFULLY solder pin 26 to  
pin 28 on the SmartWatch unit. Now clip off pins 1-2 and bend   
pin 28 out to the side. Clip off pin 27 and insert the now      
modified SmartWatch into the socket where the ROM C socket WAS  
at (make sure to get pin # 3 on the SmartWatch into Pin #1's    
place on the board ).                                           
Now solder the SmartWatch in place (very carefully, that is!!). 
Double check all connections as some are also soldered in on    
top of the board (it is a DOUBLED SIDE board). If you do a good 
job of flowing the solder around the connections, it will       
solder both sides at one time. Now check your work for solder   
bridges VERY CAREFULLY, if no solder bridges can be found, Plug 
in the ROM C I.C. into the top of the SmartWatch. Now you have  
to make a slight modification to the case back (monitor         
housing). The screw plate in the center of the case MUST be     
removed (has a black metal piece with a hole in the center)     
Make sure you locate the right bracket first, it is the one     
ALMOST in the exact center of the back of the computer, behind  
the CRT. It is below the center screw close to the top of the   
back panel. The center bottom screw will fit into it.           
       Take a pair of side-cut pliers and cut the metal part    
out. It is best to trim the plastic away and remove the metal   
piece. After the metal piece is removed, cut about 1 inch of    
the plastic away to make it about 1 inch SHORTER than it was.   
When you think you have enough removed from the bracket, put    
the Mother board back in and insert all the screws back into    
there proper place. Attach all cables, insert Hi-Res board and  
see if the monitor will fit back onto the machine. If it does   
fit right, be sure to attach the monitor and ground cables back 
where they go. If it does not, trim some more off the center    
support bracket till it does.                                   
       All the above in 1 paragraph or less.........            
Open computer, remove CRT cable, remove shielding and Main      
circuit board,remove Hi-Res board, remove ROM C's I.C socket,   
Solder SmartWatch in place of socket (after removing pins 1-2   
and 27, attaching pins 26-28, bending pin 28 to side.),         
Soldering Unit in place, modifing case, putting it all back     
together again!                                                 
                                                                
SmartWatch Pinout follows.......                                
                                                                
          1-.     *     .-28                                    
          2-.   front   .-27                                    
          3-.    of     .-26                                    
          4-.   I.C.    .-25                                    
          5-.           .-24                                    
          6-.           .-23                                    
          7-.           .-22                                    
          8-.           .-21                                    
          9-.           .-20                                    
         10-.           .-19                                    
         11-.           .-18                                    
         12-.           .-17                                    
         13-.           .-16                                    
         14-.           .-15                                    
                                                                
  The front of the I.C. is a notch or other type of marking on  
one end.                                                        
 If in this document I have made a omission, I am sorry, please 
read through once or twice to get a good understanding of what  
you must do before opening the computer. This was done on the   
OLD model 4 (white screen type) and may or may NOT apply to all 
Model 4's. Take your time and do it right the first time and    
you will NOT have to set the time or date again on the Model    
4!!!                                                            
      You MUST get SMTWATCH/ARC as it has the driver programs   
and primary instruction docs for the installation.              
                                                                
                        Thank You, and good luck!               
                                                                
Dan P. Cramer                                                   
GEnie mail = D.CRAMER1                                          
Compuserve user I.D. = 70165,206                                
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