Adjustments; 6-5.1 +5V Power Supply Adjustment - MINOLTA-QMS 4060 Service And Parts Manual

Maintenance
SERVICE MANUAL
6-5.

Adjustments

Unscheduled adjustments may be required in the 4060 printer, LCH, and the LCS. Typically, they
become necessary during maintenance to the FRU components but adjustments can be required at
any time. The adjustments are:
Procedure 6-5.1 "+5V Power Supply Adjustment," Page 6-16
•
Procedure 6-5.2 "Laser Start Position Alignment," Page 6-18
•
Procedure 6-5.3 "Paper Feed System Alignment," Page 6-20
•
6-5.1. +5V Power Supply Adjustment
These +5V power adjustment (actually +4.82V) steps are:
1.
Remove rear cover
2.
Using your multimeter, monitor test point +5V W7 on the mechanism
controller PCB
3.
Verify voltage is +4.82 +/-0.02V
4.
Use small flat-blade screwdriver to adjust potentiometer RV113
5.
If voltage level cannot be maintained, use troubleshooting flow charts
SVC59 and SVC5A to fault isolate
6.
If LVPS output is set properly, close rear cover
6-16
This procedure is not user accessible.
NOTE
Figure 6-9 illustrates the +5V (W7) test point
location
+4.80V to +4.84V
Figure 6-9 illustrates the access of the +5V
Adjustment through the top hole of the
mechanism controller PCB supporting bracket
Go to chapter 5 for SVC59 and SVC5A
troubleshooting flow charts