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TEST PROCEDURE
1.Disconnect main AC input power to the machine.
2.Disconnect Molex Plugs J3 and J6 from the G2803 Control Board. See Figure F.5.
|
| J3 |
255 CONTROL G2803 |
|
|
WM- |
| J9 |
|
| |
|
| J6 |
|
| J4 |
|
| J5 |
J1 | J7 | J10 |
|
| |
|
| J2 |
FIGURE F.5 - Control Board Molex Plug Locations for G2803 PC Control Board.
3.Verify that the capacitors have com- pletely discharged with an Analog
4.Disconnect leads X2 and X3 from the negative capacitor bank using a 1/2" open end wrench.
See Figure F. 6.
LEADS |
X2 AND X3 |
NEGATIVE |
CAPACITOR |
BANK |
BUSS BAR |
FIGURE F.6 - Location of Leads X2
and X3.
5.Separate leads X2 and X3 from the negative capacitor bank buss bar. Be sure there is no electrical con- tact. See Figure F.6.
NOTE: DO NOT DISASSEMBLE THE
SCR RECTIFIER HEAT SINK ASSEM-
BLY.
6.Construct the circuit shown in Figure F.7. One
a.Test the voltage level of the bat- tery. Short leads (A) and (C). Close switch