HL-2030/2040/2070N SERVICE MANUAL
Confidential
3-17
1.4 Power
Supply
1.4.1 Low-voltage power supply
The power supply uses a switching regulation system to generate the regulated DC power
(+5V and +24V), which are converted from the AC line.
The regulated output and the production code of each power supply are listed below;
Regulated Output
Production Code
+5V / 0.7A
+24V / 1.5A
100V: MPW5215
200V: MPW5115
For the circuit diagram of the low-voltage power supply PCB, see
APPENDIX 8.or 9. ‘LOW-
VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM’
in this manual.
Heater
Circuit
Thermostat
Thermal
Feedback
Line
Filter
Fuse
Fuse
Rectifier
Oscillator
5V
Regulation
Circuit
24V
Lamp
(Heater)
(Main Circuit)
Lightning
Surge
Absorber
Fuse
5V
Fig. 3-24