Zenith ZDX-313, Service Manual

Page: 103 / 136

4-24
MECHANISM TROUBLESHOOTING GUIDE
AUTO STOP.
(PLAY/CUE/REV)
Are there T/up and supply reel
pulses.
In Play/Cue/Rev is the pinch
roller in contact with the capstan
shaft.
Replace Reel Sensor.
Is the output of DFG, DPG OK?
Check aligment positions (page 4-
14) Check Pinch spring.
Replace Drum Motor.
Check Servo, Syscon.
Check the Syscon, µ-COM.
No cassette loading.
Insert the cassette.
Check CST Holder Assembly.
Is there variation for CST IN S/W
Output?
(In Tape with REC Tab
“L”
→
“H”
→
“L”)
(In Tape without REC Tab
“L”
→
“H”
→
“L”
→
“H”)
Does the CST IN S/W work
normally?
Does the lever Assembly S/W
work normally.
Check Syscon Circuit. Check Syscon Circuit.
Replace CST IN S/W.
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO NO
NO
YES
C.
D.