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3-5
NO 5VT.
Check or Replace
the D118
Is the Vcc(5.3V) sup-
plied to Q163 Emittor?
Check or Replace
the Q163
Is the Q164 Base
“H”?
NO
NO
Check the TIMER “H”
signal from µ-com
YES
YES
YES
No 3.3V.
(TO DVD)
Check or Replace
the D111
Check the PWR CTL
H” signal from µ-com
Is there about 3.7V
at the IC152 pin1?
Is there about 3.3V~5V
at the IC154 pin4?
Check the IC152
Replace
NO
NO
YES
YES
YES
No 12VA
(To Cap, Drum Motor )
Check or Replace
D110.
Is the Vcc(13V) sup-
plied to C123?
Is the D117/D115
Normal?
NO
Check the
D117/D115.
NO
YES
YES
Check or Replace
the Cap / Drum
YES
No REG 12VT
Check or Replace
the D110.
Is the Vcc(13V) supplied
to Q156 Collector?
Is the Vcc(13V) sup-
plied to Q156 Base?
NO
NO
Check the TIMER “H”
signal from µ-com
Check the 33V
Line
YES
YES
YES
Check or Replace
the Q156.
YES
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: ......