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Diagnostic Aids
190
POWER ON DIAGNOSTIC
The power on diagnostic checks the basic internal
functions of the printer. The following flowchart shows
the sequence of events that occur when the Power
switch is pressed.
POR is not part of the diagnostic but results from
turning on power to the printer.
Press the Power switch
8
Page 1-71
Turns on all lights
..
Degates the driver and
receiver
Initializes all logic hard-
ware and sets the IAR to
0000
__ 1 __
T_es_t_a_"_L_E_D_S _ _ _ _ _
__ -1 . . .
_E_x_ce_
p
_t_p_o_we_r_o_n _ _ _ _
1-70
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