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OPERATING PRINCIPLES
2.2 POWER SUPPLY OPERATION
The printer can be powered by either of two power supply boards: the 120 V C204 PSB board or the 220/240
V C204 PSE board. The only diierence in the operation of these two boards is in the primary circuitry. They
supply power to the printer in the same way. The power supply board outputs the DC current required to drive
the control circuits and printer driie mechanism. Table 2-1 shows the input voltages and fuse ratings of the
boards and Table 2-2 shows the PSB/PSE board output specification.
Board
C204 PSB board
C204 PSE board
Table 2-1. Power Supply Boards Input
1 input Voltage
1 Fuse Ratings
1 120 VAC
/12A/l25VAC
( 220-240 VAC
1 6.3 A I250 VAC
I
Table 2-2. Power Supply Board Output Specification
I rR7 VDC Line I &TV DC Line I
._. .-- - . .._
Item VP1
I
VP2
I
VP3
Rating Output Voltage
+37.0 VDC +5.0 VDC
Available Output
35.5.37.5 VDC
4.75 - 5.25 VDC
Voiiage Fluctuation
Rating Output Current
1.5A 2.0 A
Available Output
0.0 - 4.5 A*l)
0.0 5.0 A’l) 0.0 - 2.0 A
Current Fluctuation
Over Current Protection Yes
Yes
Over Current Protection
Turn the power switch off, then turn it again. Or
Automatically recovered.
Reset Method
controlled by C204 MAIN board with /PD signal.
Short Circuit Current
Less than 1 .O A Less than 1 .O A
Over Voltage Protection
Yes
Over Voltage Protection
Turn the power switch off, then turn it again.
Reset Method
Over Voltage Limit Value
42 VDC
‘1): +37 V DC line Maximum in total is 13.0 A.
Yes
Automatically recovered.
7 VDC
Rev. A
2-13