Epson LX-86TM Especificações descarregar pdf (Página 37)

REV.-A

Table 2-2. Power Transformer Output Voltages

Rated Voltage

Type

Pin No.

No-load AC Voltage [V]

AC [V] DC [V]

220V

0-0

29.3

27.1

32.3

240V

@-@

9.0

8.33

+9.0/– 9.9

a-o

29.3

27.7

33.3

120V

n-m

8.96

8.41

+9.27/– 10.0

NOTE: Column “DC

@/]”

for the rated voltages indicates the output of the transformer when the

ROCX

board is connected. The plus and minus values between pins 10 and 9 are different due to the

voltage drop across thermal fuse TF2.

2.3.2 Regulator Circuit

AC-tind

AC2 output from the ROC filter unit are input to connector CN8 of the

ROCX

board. The

regulator circuit can be divided mainly into two portions, the +24 V/+5 V and + 12 V lines. AC 1 is

full-wave rectified by diode bridge DB 1 and converted to +24 V and +5 V via the chopper type

switching regulator.

AC2 is half-wave rectified by D4-C 10, converted to + 12 V, and input to the optional

interface board.

20v:

2M-3.ISA-MI

Otal-3.1=1

az, &_

3.15A

0747

.24V

cl-

●

● WI

C;t

13A)

*UK

‘~’i

“=*V

pPc494c

‘

**I

In,

2M01n3

R6S

O.in

Sc2

2!3

Clo

1000,

Fig. 2-5. +24/+5 VDC Regulator and +12 V Half-Wave Rectifier Circuits

2-5

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 141 142

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