LG RCT689H Service Manual page 112

MECHANISM TROUBLESHOOTING GUIDE
C.
AUTO STOP.
(PLAY/CUE/REV)
In Play/Cue/Rev is the pinch
roller in contact with the
capstan shaft.
YES
Are there T/up and supply reel
pulses.
YES
Check the Syscon, μ-COM.
D.
No cassette loading.
Insert the cassette.
YES
Does the lever Assembly S/W
work normally.
YES
Is there variation for CST IN
S/W Output?
(In Tape with REC Tab
"L" c" "H" " "L")
(In Tape without REC Tab
"L" " "H" " "L" " "H")
YES
Check Syscon Circuit.
Check aligment positions (page
4-14) Check Pinch spring.
Is the output of DFG, DPG OK?
NO
YES
NO
Check Servo, Syscon.
Replace Reel Sensor.
NO
Check CST Holder Assembly.
NO
Does the CST IN S/W work
normally?
YES
NO
Check Syscon Circuit.
4-25
NO
Replace Drum Motor.
NO
Replace CST IN S/W.