Checking The Power Supply - SATO CG412DT Service Manual

Section 6: Checks and Adjustment Procedures

6.1 CHECKING THE POWER SUPPLY

This checking procedure enables checking various direct current voltages of the MAIN Printed Circuit Board
( PCB ). These checking activities require the use of a multimeter.
1.
Switch off the printer.
2.
Remove the Bottom Housing Cover as explained in Section 7.3 Removal of the Bottom Housing
cover .
3.
Set the multimeter to Direct Current Voltage mode.
4.
Turn the printer On.
5.
Keep placing the [-] probe of the multimeter at the 1A(GND) test point on the MAIN PCB for the following
measurement.
6.
Place [+] probe at Test Point 5A , and then measure at +19.0 V.
7.
Place [+] probe at Test Point 3A , and then measure at +5.0 V.
8.
Place [+] probe at Test Point 4A , and then measure at +3.3 V.
9.
Place [+] probe at Test Point 6A , and then measure at +1.8 V.
10.
Turn the printer off.
Table of normal performance values:
+1.8 V +1.7 V to +1.9 V (Test Point 6A)
+3.3 V +3.1 V to +3.5 V (Test Point 4A)
+5.0 V +4.8 V to +5.2 V (Test Point 3A)
+19.0 V +18.0 V to +20.0 V (Test Point 5A)
1A(GND) 4A(3.3V)
3A(5.0V)
5A(19.0V)
+
-
F(19.0V)
Page 6-2
6A(1.8V)
G(GND)
CG4 Series Service Manual