ENGINE DIAGNOSTIC TOOLS Section 4 CREATIVE TOOL MODEL CT4000 DIESEL TIMING AND TACHOMETER INSTRUMENT (SE-2783 OR (3005A) CURRENT MODEL (Continued) KEYBOARD DESCRIPTION CG.7358 Figure 6.  Control Keyboard The  following  is  a  description  of  SE-2783’s  or  3005A’s Control Keyboard.  From this keyboard, each function of SE-2783 or 3005A can be selected. ONCE A KEY HAS BEEN DEPRESSED, IT MAY BE RELEASED.  With the possible   exception   of   the   ""   and   ""   keys,   it   is   not necessary to hold the key depressed.  SE-2783 or 3005A reacts as soon as the key is depressed, and remains in that mode until another key has been depressed. "RST" The  Reset  Key  will  place  the  SE-2783  or  3005A  in  the "power-up"   mode.      Often   times   when   an   engine   is cranked,  the  battery  voltage  will  drop  below  the  9  volt minimum required to operate the SE-2783 or 3005A.  To place the instrument into proper operation after  this  has happened, release and de- press the "RST" Key. NOTE:   The   "RST"   key   is   a   latching   key   and   will remain  down  until  depressed  again  -  to  release  it. The  key  must  be  depressed  when  the  instrument  is in operation. "2 CYC" This  key  is  a  latching  key  used  on  2  cycle  engines.  It should  be  depressed  for  2  cycle  engines  and  released for 4 cycle engines. "TST" This test key has two functions.  Each time the SE-2783 or 3005A is connected to a power source, this key MUST be depressed before any other function  can  be  selected.    This  places  the  SE-2783  or 3005A in an operational mode. Additionally, each time "TST" is depressed, the SE-2783 or 3005A checks to see if a signal is being received from the   transducer.      If   a   signal   is   being   received   "8888" appears in the lighted display.  If the display shows "- - - - ," a problem exists. "RPM" This key when depressed, places the SE-2783 or 3005A in the rpm mode.  Engine speed will be displayed on the digital readout. "ADV" This key, when depressed, places the SE-2783 or 3005A in the ADVANCE mode so injection timing can be easily measured as described in the "OPERATING PROCEDURES" section. "STB ON" This  key  operates  the  remote  strobe  light  unit.    To  turn on the strobe light, depress "STB ON" key.  To turn the light  off,  depress  and  release  the  key.    The  timing  light can  be  turned  on  whether  in  "RPM"  or  "ADV"  mode  of operation. “ “ This   key   functions   during   the   "ADV"   mode.      In   the ADVANCE   mode,   it   will   increase   or   increment   the advance  angle  by  one  if  it  is  depressed  and  re-  leased quickly.  If it is depressed and held for greater than one- half  second,  the  advance  angle  will  be  incremented  by one; then at the end of one- half second, it will begin to slew or increase at a rate of four degrees per second for as  long  as  the  key  is  depressed.    When  the  key  is released,  the  display  shows  the  accumulated  advance angle. “” This key is identical to the "" key in operation, but when depressed, it decreases or decrements the display in the same manner as the "" increased it. NOTE:It will not go below O in the "ADV" mode. CGES-2404 Printed in United States of America Page 8