----------------------------------------------------------------------
0479  037 Auto          251 Counter Memo  231 Menu Reset    036 TV/CAP/Text 
      037 Auto Trackin  244 Counter Rese  235 Reset         251 Zero Return 
      235 Blank Key     105 Eject         100 Skip Search                   
      118 Cancel        171 Input Select  245 Speed                         
      040 CH. 1/2       103 Menu          122 Timer Record                  
                                                                             
      
     VCR.
     181 0...............0                  185 1...............1                  
     183 2...............2                  187 3...............3                  
     180 4...............4                  184 5...............5                  
     182 6...............6                  186 7...............7                  
     053 8...............8                  057 9...............9                  
     167 DISPLAY.........Call               059 CHANNEL DOWN....Channel Down       
     055 CHANNEL UP......Channel Up         120 ENTER...........Enter              
     121 FAST FORWARD....Fast Forward       165 MUTE............Mute               
     054 RECORD..........OTR                123 PAUSE...........Pause              
     058 PLAY............Play               041 POWER...........Power              
     228 PROGRAM.........Program            250 PROGRAM.........Program CFM        
     248 RECALL..........Quick View         054 RECORD..........Record             
     119 REWIND..........Rewind             102 DOWN............Set Down           
     104 UP..............Set Up             169 SLEEP...........Sleep              
     123 PAUSE...........Still              117 STOP............Stop               
     170 SHIFT STOP......Tracking Dn        102 SHIFT REW.......Tracking Down      
     166 SHIFT PLAY......Tracking Up        104 SHIFT FFD.......Tracking Up        
     042 A/B.............TV Monitor         056 VOLUME DOWN.....Volume Down        
     052 VOLUME UP.......Volume Up          

Other codes I found on a Zenith TV/VCR combo:
113 Program (but goes to different screen than other program codes)
109 Clock Set menu
115 Ch Setup menu
235 service menu