Service manual

Unit 5: Adjustment Procedures
Page 5-10 SATO D508/D512 Service Manual
POWER SUPPLY CHECKS
Obtain a DC Multimeter and Number 2 Phillips screwdriver for this check. To check voltage
levels, first check the Main PCB fuse (see next page) and replace it if necessary. Then follow the
steps below:
1 Turn the printer OFF.
2 Set the multimeter to DC mode.
3 Attach the negative (-) lead from the multimeter to Pin 3 (GND) of CN3 on the configuration
panel.
4 Attach the positive (+) lead from the multimeter to Pin 4 of CN3 on the configuration panel.
5 Turn the printer ON.
6 Confirm that the voltages are correct. If not, remove the power connector from the rear of
the printer, connect the test probes to Pin 1 (+) and Pin 4 (-) and measure the voltages.
7 If the voltages are not correct, replace the power supply.
Ideal Voltage Te s t P o in ts Voltage Range
+ 5.0 V Pin 3 (GNC) of CN3
Pin 4 of CN3
+4.8 V to +5 V
CN3
Pin 1 GAP Pin 3 GND Pin 4 +5 V
Pin 2 Eye
Power Supply Connector