Read Sharp AR-651 (serv.man17) Service Manual online
AR-651/810 FUSER UNIT 14 - 6
14. 4. 3. IH control circuit interface
The IH control circuit uses a photocoupler as an insulator against the secondary circuit.
The interface signals are as followed.
Number
Signal
Direction
Definition
J552-1
IH2ON
HOST to IH OFF signal when the roller ends are heated abnormally
J552-2
5V
J552-3
H1PWR1
HOST to IH Electric power setting
J552-4
H1PWR2
J552-5
H1PWR3
J552-6
H2PWR1
J552-7
H2PWR2
J552-8
H2PWR3
J553-1
IH1ON
HOST to IH ON/OFF signal
J553-2
SG
J553-3
IHDUTY
HOST to IH ON duty signal
J553-4
IHERR1
HOST to IH Error signal
J553-5
IHERR2
Click on the first or last page to see other AR-651 (serv.man17) service manuals if exist.