Monitor GF3800 Servise Manual page 59

I SYMPTOM | | CHECK1 | | RESULT | | CHECK2 | | RESULT | | CHECKS | | RESULT | | CHECK4 | | RESULT | | CHECKS \ \ RESULT | | REASON | | CORRECTIVE MEASURJT]
Failure o! microprocessor. (IC1)
Failure of transistor airey.(1C13)
Failure of diode
(D5-O8, D30. 031)
Failure of relay- (RL3. RL4)
I Failure of transistcr.(Q3)
Incorrect wiring of gas solenoid
vah/e.
Gas sctenid valve open.
Correct wiring-
Replace gas solenoid valve.
Failure of transformer.
Failure of microprocessor.(!C1)
Failure of operational amplifier.
(IC9)
Failure of diode. (D25, D26)
Failure of transistor. (Q2, CM)
Failure of resistor. (FO5—R38)
Failure of capacitor.
(C25-C27)
Incorrect wiring of gas control
valve.
Correct wiring.
Gas control valve open.
M
Replace gas control valve.
Contact gas supplier.