Toshiba e-studio550 Service Manual page 212

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
J552-1 IH2ON
J552-2 5V
J552-3 H1PWR1
J552-4 H1PWR2
J552-5 H1PWR3
J552-6 H2PWR1
J552-7 H2PWR2
J552-8 H2PWR3
J553-1 IH1ON
J553-2 SG
J553-3 IHDUTY
J553-4 IHERR1
J553-5 IHERR2
e-STUDIO550/650/810 FUSER UNIT
Direction
HOST to IH OFF signal when the roller ends are heated abnormally
HOST to IH Electric power setting
HOST to IH ON/OFF signal
HOST to IH ON duty signal
HOST to IH Error signal
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Definition
JUNE 2002 © TOSHIBA TEC