Zenith XBV613 Service Manual - Page 102

Auto Stop., Play/cue/rev

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Page 102 highlights

MECHANISM TROUBLESHOOTING GUIDE C. AUTO STOP. (PLAY/CUE/REV) Check aligment positions (page 4-14) Check Pinch spring. In Play/Cue/Rev is the pinch roller in contact with the capstan shaft. YES Are there T/up and supply reel pulses. NO NO NO Is the output of DFG, DPG OK? YES Check Servo, Syscon. YES Check the Syscon, µ-COM. Replace Reel Sensor. Replace Drum Motor. D. No cassette loading. Insert the cassette. YES Does the lever Assembly S/W work normally. YES NO Check CST Holder Assembly. 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. NO Does the CST IN S/W work normally? YES NO Check Syscon Circuit. NO Replace CST IN S/W. 4-24

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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 cap-
stan 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
”
c"
“
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.