****** SPECIAL FUNCTIONS ENTERED AT POWER UP BY HOLDING KEYS PRESSED *****DATE 1-3-09Various test functions are entered by holding a combination of keys on thefront panel pressed dutring power up.Keys are refered to as TOP top key rhs BOT bottom key rhs LEFT left most key beneath display S1 key to right of LEFT S2 next key to right S3 right hand key beneath display.KEYS HELD FUNCTIONAt POWER UPTOP Enter setting procedure for preset programs.BOT Enter HUD test.LEFT Enter heating rate test.S3 Enable logging ouput during temperature control.LEFT + TOP Enter customer trimming function.LEFT + BOT Enter factory trimming (needs link H2 fitted).LEFT + S1 Step ramp test. 20 degree stepsLEFT + S2 Enter electrical calibration (needs link H2 fitted).LEFT + S3 Enter Serial number setting (needs link H2 fitted).TOP + BOT Enter initial pcb testing (for pcb manufacturer needs H2 fitted).TOP + S3 60C 100C 200C 3 step ramp 30 mins each step (needs H2 fitted