
4-24
MECHANISM TROUBLESHOOTING GUIDE
Auto Stop operates.
(PLAY/CUE/REV)
Does the T/UP or the supply
reel pulse occur?
Does the pinch roller attached to
the Capstan shaft turn in opera-
tion of the Play/Cue/Rev.
Replace the reel sensor.
Is output of the DFG, DPG
normal?
Check the assembly mode.
Check the spring pinch.
Replace the drum motor.
Check the Servo, Syscon.
Check the Syscon, µ-com.
No cassette loading is done.
Insert the cassette.
Check the holder assembly CST.
Does output of the CST IN S/W
change?
(In insertion of the REC tape:
“L”_“H”_ “L”)
(In insertion of the REC preven-
tion tape:
“L”_ “H”_ “L”_ “H”)
Is the CST IN S/W normal?
Is operation of the lever
assembly S/W normal?
Check the Syscon circuit.
Check the Syscon circuit.
Replace the CST IN S/W.
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
C.
D.
Содержание DVP 721VR
Страница 36: ...3 32 3 33 2 POWER SMPS CIRCUIT DIAGRAM 2 ...
Страница 37: ...3 34 3 35 3 TU IF NICAM A2 CIRCUIT DIAGRAM EE MODE VIDEO TU MODE AUDIO ...
Страница 40: ...3 40 3 41 6 SCART JACK CIRCUIT DIAGRAM ...
Страница 45: ...3 50 3 51 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD VCR DVD _SOLDER SIDE LOCATION GUIDE ...
Страница 46: ...3 52 3 53 2 MAIN P C BOARD VCR DVD _COMPONENT SIDE LOCATION GUIDE ...
Страница 60: ...3 68 F FE RFL FIG 7 2 DVD F FE RFL FIG 7 3 CD ...
Страница 61: ...3 69 F FE RFL FIG 7 4 CD 8 FOCUS ON WAVEFORM FE FOSO F F FIG 8 1 DVD ...
Страница 63: ...3 71 10 TRACKING CONTROL RELATED SIGNAL System checking TE TRSO T T FIG 10 1 DVD TE TRSO T T FIG 10 2 CD ...
Страница 64: ...3 72 11 MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT SPDIF FIG 11 1 12 MT1389 VIDEO OUTPUT WAVEFORM 1 100 FIG 12 1 ...
Страница 65: ...3 73 13 MT1389 AUDIO OUTPUT TO AUDIO DAC 2 COMPOSITE VIDEO SIGNAL FIG 12 2 FIG 13 1 ...
Страница 66: ...3 74 FIG 14 1 14 AUDIO OUTPUT FROM AUDIO DAC ...
Страница 71: ......
Страница 72: ...3 79 3 80 CIRCUIT DIAGRAMS 1 SYSTEM CIRCUIT DIAGRAM ...
Страница 73: ...3 81 3 82 2 RF DSP SERVO CIRCUIT DIAGRAM ...
Страница 74: ...3 83 3 84 3 AV JACK CIRCUIT DIAGRAM ...
Страница 107: ......
Страница 113: ......
Страница 115: ......