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FUSER UNIT / PAPER EXIT SECTION
16 - 8
16.5.3 IH control circuit interface
The IH control circuit uses a photocoupler as an insulation against the secondary circuit.
The interface signals are as follows.
CN No. Name of single Direction Definition
CN455-2 +5VSW LGC to IH -
CN455-3 H1PWR1
Switching signal of power setting
CN455-4 H1PWR2
CN455-5 H1PWR3
CN455-6 H2PWR1
CN455-7 H2PWR2
CN455-8 H2PWR3
CN455-1 IH2 ON
LGC to IH IH coil energization permitting signal
CN456-1 IH1 ON
CN456-4 H1ERR1
IH to LGC
IH status signal
( P.16-10 "16.5.5 Abnormality in the IH con-
trol circuit")
CN456-5 H1ERR2
CN456-2 SG LGC to IH -
CN456-3 IHDUTY Duty ratio changing signal
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