Power-On Sequence Timing Chart - MINOLTA-QMS 4060 Service And Parts Manual

2-4.3.

Power-on Sequence Timing Chart

Figure 2-19 illustrates the printer power-on timing sequence.
" " means the active-low signal.
*
Main Switch
*Standby Switch
+5V, +12V
*POWST2
*PWRRDY
(Power Ready)
Relay RL1.2 ON
*POWST1
+24V
PICK MOTOR 1
PICK MOTOR 2
PICK MOTOR 3
LIFT MOTOR
FEED MOTOR
SWITCH BACK
MOTOR
DUPLEX MOTOR
MAIN MOTOR
SPINDLE MOTOR
LDENB
(Laser diode enable)
BDCE
(Begin detection enable)
DISCHARGE LED
[HV POWER SULLY]
–HVON
(Precharger)
VBON
(Developing biqs)
ON
MAIN CONTROLLER STARTS
(Power start 2; always low unless any interlock activated)
MECHANISM CONTROLLER AND
OPTICAL UNIT START
(Power start 1; always low unless any interlock activated)
Figure 2-19. Power-on Sequence Timing Chart
Theory of Operation
SERVICE MANUAL
Power on initilize sequence ends.
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