Sharp SF-1020, SF-1120 service manual EnergyStar circuit description, Hound AC Circuit

(13) EnergyStar circuit description

The EnergyStar circuit composition saves power consumption when the user leaves the machine with the power ON.

Normally in a copy mode or in the standby mode, the main PWB connector HL signal is HIGH (5V) and the AC PWB relay (TY201) is turned on to supply power to all the power transformers and the optional power source.

When the machine is left un-operated with the power ON, the main PWB connector HL signal level becomes a high impedance to turn off the AC PWV relay (RY201), stopping power supply to the power transformers and the optional power source except for the sub DC PWB PT2 (Ref. t1). As a result, only 5V is supplied to the main PWB and the operation PWB to reduce the power consumption.

To reset from this energy save mode, press an button on the opera- tion PWB.

HOUND AC CIRCUIT

AC PWB RY201

OPTION

DC PWB

PR

SORTER

5V2

GND

AC PWB

“d ¹

OEG

DC PWB

+5V1

ILSW

OMH-SS-

X B b `

AC PWB

Vcl

TM

105LM

LI

LO

L1

+5V1

AC IN

NI

VH

NO

+24V

M A I N

N1

N/F

PT1

MirM

VFM CFM

LM SFM

P W B

JQ1-24V

HV

(AJQ1342)

VH

JAPAN ONLY

AC

PWB

+24V

ADF

ADF

DHSW

+5V

MM

DCPS

GND

CONTROL

DSW

MOTOR

24V

OPTION

HOUND-B ONLY

CONTROL

SUB

CS2M

PWB

DC PWB

ADF OPTION PWB

~

MOTOR

-

+

+28V

CONTROL

CS3M

PT2

+

PWB

DH3

~

MOTOR

OPTION

CONTROL

CS4M

DH4

PWB

OPTION

DESK DC

POWER

PWB

DESK MOTOR DRIVE PWB

DH5

DC PWB

~

+5V1

DH1

-

+

D301

OP PWB

D304

PT3

~

+5V2

DH2

+

+

GND

ADUD

GATE T1

GATE T1

VH

SF-2120/1120

~

only

200V ONLY

T2

T2

HL TRG

_

+24V

+

VH

CLR

+

+

+5V

AC PWB

+24V

~

GND

L2

120V

DC

200V

THSW

AC PWB

ADU PWB

N1

CIRCUIT

SUB DC PWB (MAIN,OP)

HL AREA

200V

PT1

CL AREA

CLTF

THSW	HL	CL
ADF DCPS
	CLTF	CL:100V 275W
HL:1kW		200V 310W
N2

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