Service manual

FO-4700U
FO-47UC
8 – 9
IC1,IC4: VHiTEA3718SDP(TEA3718SDP)
PRINTER PWB UNIT
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OUTPUT B
PULSE TIME
Vs(B)
GND
GND
Vss
INPUT1
PHASE
SENSE RESISTOR
OUTPUT A
Vs(A)
GND
GND
REFERENCE
COMPARATOR INPUT
INPUT0
–
+
–
+
–
+
T2˚C
IN1
IN0
GND
COMPARATOR INPUT
MONO
STABLE
PULSE TIME SENSE
REFERENCE VSS PHASE VS(A) OUTA OUTB VS(B)
DELAY
TRIGGER
VCH
VCM
VCL
CURRENT
SENSOR