4-2
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Only for training and service purposes
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1-1. OPEN CLOSE NG
Connector locking check
(PN803, PN804, PN814)
YES
YES
YES
YES
Check power
supply circuit (PN805, CN806)
CN806 PIN1 : 12V, PIN2 : 6.3V
PN805 PIN8 : +5V_AD
Defective main power supply
NO
Check voltage change LO+, LO- OF IC803
(PN805 PIN23 : OPEN, PIN22 : CLOSE)
Defective IC803
Defective mechanism
NO
Check voltage
change of OPEN CLOSE
IC803 INPUT voltage PIN6 : 12V,
PIN7:6.3V (PN805 PIN2 :
BTL_MUTE, 23 : OPEN,
22 : CLOSE)
Defective micom
NO
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